/* */ 
"format cjs";
(function(process) {
  var ts;
  (function(ts) {
    var OperationCanceledException = (function() {
      function OperationCanceledException() {}
      return OperationCanceledException;
    }());
    ts.OperationCanceledException = OperationCanceledException;
    (function(ExitStatus) {
      ExitStatus[ExitStatus["Success"] = 0] = "Success";
      ExitStatus[ExitStatus["DiagnosticsPresent_OutputsSkipped"] = 1] = "DiagnosticsPresent_OutputsSkipped";
      ExitStatus[ExitStatus["DiagnosticsPresent_OutputsGenerated"] = 2] = "DiagnosticsPresent_OutputsGenerated";
    })(ts.ExitStatus || (ts.ExitStatus = {}));
    var ExitStatus = ts.ExitStatus;
    (function(TypeReferenceSerializationKind) {
      TypeReferenceSerializationKind[TypeReferenceSerializationKind["Unknown"] = 0] = "Unknown";
      TypeReferenceSerializationKind[TypeReferenceSerializationKind["TypeWithConstructSignatureAndValue"] = 1] = "TypeWithConstructSignatureAndValue";
      TypeReferenceSerializationKind[TypeReferenceSerializationKind["VoidType"] = 2] = "VoidType";
      TypeReferenceSerializationKind[TypeReferenceSerializationKind["NumberLikeType"] = 3] = "NumberLikeType";
      TypeReferenceSerializationKind[TypeReferenceSerializationKind["StringLikeType"] = 4] = "StringLikeType";
      TypeReferenceSerializationKind[TypeReferenceSerializationKind["BooleanType"] = 5] = "BooleanType";
      TypeReferenceSerializationKind[TypeReferenceSerializationKind["ArrayLikeType"] = 6] = "ArrayLikeType";
      TypeReferenceSerializationKind[TypeReferenceSerializationKind["ESSymbolType"] = 7] = "ESSymbolType";
      TypeReferenceSerializationKind[TypeReferenceSerializationKind["TypeWithCallSignature"] = 8] = "TypeWithCallSignature";
      TypeReferenceSerializationKind[TypeReferenceSerializationKind["ObjectType"] = 9] = "ObjectType";
    })(ts.TypeReferenceSerializationKind || (ts.TypeReferenceSerializationKind = {}));
    var TypeReferenceSerializationKind = ts.TypeReferenceSerializationKind;
    (function(DiagnosticCategory) {
      DiagnosticCategory[DiagnosticCategory["Warning"] = 0] = "Warning";
      DiagnosticCategory[DiagnosticCategory["Error"] = 1] = "Error";
      DiagnosticCategory[DiagnosticCategory["Message"] = 2] = "Message";
    })(ts.DiagnosticCategory || (ts.DiagnosticCategory = {}));
    var DiagnosticCategory = ts.DiagnosticCategory;
  })(ts || (ts = {}));
  var ts;
  (function(ts) {
    function createFileMap(keyMapper) {
      var files = {};
      return {
        get: get,
        set: set,
        contains: contains,
        remove: remove,
        forEachValue: forEachValueInMap,
        clear: clear
      };
      function forEachValueInMap(f) {
        for (var key in files) {
          f(key, files[key]);
        }
      }
      function get(path) {
        return files[toKey(path)];
      }
      function set(path, value) {
        files[toKey(path)] = value;
      }
      function contains(path) {
        return hasProperty(files, toKey(path));
      }
      function remove(path) {
        var key = toKey(path);
        delete files[key];
      }
      function clear() {
        files = {};
      }
      function toKey(path) {
        return keyMapper ? keyMapper(path) : path;
      }
    }
    ts.createFileMap = createFileMap;
    function toPath(fileName, basePath, getCanonicalFileName) {
      var nonCanonicalizedPath = isRootedDiskPath(fileName) ? normalizePath(fileName) : getNormalizedAbsolutePath(fileName, basePath);
      return getCanonicalFileName(nonCanonicalizedPath);
    }
    ts.toPath = toPath;
    function forEach(array, callback) {
      if (array) {
        for (var i = 0,
            len = array.length; i < len; i++) {
          var result = callback(array[i], i);
          if (result) {
            return result;
          }
        }
      }
      return undefined;
    }
    ts.forEach = forEach;
    function contains(array, value) {
      if (array) {
        for (var _i = 0,
            array_1 = array; _i < array_1.length; _i++) {
          var v = array_1[_i];
          if (v === value) {
            return true;
          }
        }
      }
      return false;
    }
    ts.contains = contains;
    function indexOf(array, value) {
      if (array) {
        for (var i = 0,
            len = array.length; i < len; i++) {
          if (array[i] === value) {
            return i;
          }
        }
      }
      return -1;
    }
    ts.indexOf = indexOf;
    function countWhere(array, predicate) {
      var count = 0;
      if (array) {
        for (var _i = 0,
            array_2 = array; _i < array_2.length; _i++) {
          var v = array_2[_i];
          if (predicate(v)) {
            count++;
          }
        }
      }
      return count;
    }
    ts.countWhere = countWhere;
    function filter(array, f) {
      var result;
      if (array) {
        result = [];
        for (var _i = 0,
            array_3 = array; _i < array_3.length; _i++) {
          var item = array_3[_i];
          if (f(item)) {
            result.push(item);
          }
        }
      }
      return result;
    }
    ts.filter = filter;
    function map(array, f) {
      var result;
      if (array) {
        result = [];
        for (var _i = 0,
            array_4 = array; _i < array_4.length; _i++) {
          var v = array_4[_i];
          result.push(f(v));
        }
      }
      return result;
    }
    ts.map = map;
    function concatenate(array1, array2) {
      if (!array2 || !array2.length)
        return array1;
      if (!array1 || !array1.length)
        return array2;
      return array1.concat(array2);
    }
    ts.concatenate = concatenate;
    function deduplicate(array) {
      var result;
      if (array) {
        result = [];
        for (var _i = 0,
            array_5 = array; _i < array_5.length; _i++) {
          var item = array_5[_i];
          if (!contains(result, item)) {
            result.push(item);
          }
        }
      }
      return result;
    }
    ts.deduplicate = deduplicate;
    function sum(array, prop) {
      var result = 0;
      for (var _i = 0,
          array_6 = array; _i < array_6.length; _i++) {
        var v = array_6[_i];
        result += v[prop];
      }
      return result;
    }
    ts.sum = sum;
    function addRange(to, from) {
      if (to && from) {
        for (var _i = 0,
            from_1 = from; _i < from_1.length; _i++) {
          var v = from_1[_i];
          to.push(v);
        }
      }
    }
    ts.addRange = addRange;
    function rangeEquals(array1, array2, pos, end) {
      while (pos < end) {
        if (array1[pos] !== array2[pos]) {
          return false;
        }
        pos++;
      }
      return true;
    }
    ts.rangeEquals = rangeEquals;
    function lastOrUndefined(array) {
      if (array.length === 0) {
        return undefined;
      }
      return array[array.length - 1];
    }
    ts.lastOrUndefined = lastOrUndefined;
    function binarySearch(array, value) {
      var low = 0;
      var high = array.length - 1;
      while (low <= high) {
        var middle = low + ((high - low) >> 1);
        var midValue = array[middle];
        if (midValue === value) {
          return middle;
        } else if (midValue > value) {
          high = middle - 1;
        } else {
          low = middle + 1;
        }
      }
      return ~low;
    }
    ts.binarySearch = binarySearch;
    function reduceLeft(array, f, initial) {
      if (array) {
        var count = array.length;
        if (count > 0) {
          var pos = 0;
          var result = arguments.length <= 2 ? array[pos] : initial;
          pos++;
          while (pos < count) {
            result = f(result, array[pos]);
            pos++;
          }
          return result;
        }
      }
      return initial;
    }
    ts.reduceLeft = reduceLeft;
    function reduceRight(array, f, initial) {
      if (array) {
        var pos = array.length - 1;
        if (pos >= 0) {
          var result = arguments.length <= 2 ? array[pos] : initial;
          pos--;
          while (pos >= 0) {
            result = f(result, array[pos]);
            pos--;
          }
          return result;
        }
      }
      return initial;
    }
    ts.reduceRight = reduceRight;
    var hasOwnProperty = Object.prototype.hasOwnProperty;
    function hasProperty(map, key) {
      return hasOwnProperty.call(map, key);
    }
    ts.hasProperty = hasProperty;
    function getKeys(map) {
      var keys = [];
      for (var key in map) {
        keys.push(key);
      }
      return keys;
    }
    ts.getKeys = getKeys;
    function getProperty(map, key) {
      return hasOwnProperty.call(map, key) ? map[key] : undefined;
    }
    ts.getProperty = getProperty;
    function isEmpty(map) {
      for (var id in map) {
        if (hasProperty(map, id)) {
          return false;
        }
      }
      return true;
    }
    ts.isEmpty = isEmpty;
    function clone(object) {
      var result = {};
      for (var id in object) {
        result[id] = object[id];
      }
      return result;
    }
    ts.clone = clone;
    function extend(first, second) {
      var result = {};
      for (var id in first) {
        result[id] = first[id];
      }
      for (var id in second) {
        if (!hasProperty(result, id)) {
          result[id] = second[id];
        }
      }
      return result;
    }
    ts.extend = extend;
    function forEachValue(map, callback) {
      var result;
      for (var id in map) {
        if (result = callback(map[id]))
          break;
      }
      return result;
    }
    ts.forEachValue = forEachValue;
    function forEachKey(map, callback) {
      var result;
      for (var id in map) {
        if (result = callback(id))
          break;
      }
      return result;
    }
    ts.forEachKey = forEachKey;
    function lookUp(map, key) {
      return hasProperty(map, key) ? map[key] : undefined;
    }
    ts.lookUp = lookUp;
    function copyMap(source, target) {
      for (var p in source) {
        target[p] = source[p];
      }
    }
    ts.copyMap = copyMap;
    function arrayToMap(array, makeKey) {
      var result = {};
      forEach(array, function(value) {
        result[makeKey(value)] = value;
      });
      return result;
    }
    ts.arrayToMap = arrayToMap;
    function reduceProperties(map, callback, initial) {
      var result = initial;
      if (map) {
        for (var key in map) {
          if (hasProperty(map, key)) {
            result = callback(result, map[key], String(key));
          }
        }
      }
      return result;
    }
    ts.reduceProperties = reduceProperties;
    function isArray(value) {
      return Array.isArray ? Array.isArray(value) : value instanceof Array;
    }
    ts.isArray = isArray;
    function memoize(callback) {
      var value;
      return function() {
        if (callback) {
          value = callback();
          callback = undefined;
        }
        return value;
      };
    }
    ts.memoize = memoize;
    function formatStringFromArgs(text, args, baseIndex) {
      baseIndex = baseIndex || 0;
      return text.replace(/{(\d+)}/g, function(match, index) {
        return args[+index + baseIndex];
      });
    }
    ts.localizedDiagnosticMessages = undefined;
    function getLocaleSpecificMessage(message) {
      return ts.localizedDiagnosticMessages && ts.localizedDiagnosticMessages[message.key] ? ts.localizedDiagnosticMessages[message.key] : message.message;
    }
    ts.getLocaleSpecificMessage = getLocaleSpecificMessage;
    function createFileDiagnostic(file, start, length, message) {
      var end = start + length;
      Debug.assert(start >= 0, "start must be non-negative, is " + start);
      Debug.assert(length >= 0, "length must be non-negative, is " + length);
      if (file) {
        Debug.assert(start <= file.text.length, "start must be within the bounds of the file. " + start + " > " + file.text.length);
        Debug.assert(end <= file.text.length, "end must be the bounds of the file. " + end + " > " + file.text.length);
      }
      var text = getLocaleSpecificMessage(message);
      if (arguments.length > 4) {
        text = formatStringFromArgs(text, arguments, 4);
      }
      return {
        file: file,
        start: start,
        length: length,
        messageText: text,
        category: message.category,
        code: message.code
      };
    }
    ts.createFileDiagnostic = createFileDiagnostic;
    function createCompilerDiagnostic(message) {
      var text = getLocaleSpecificMessage(message);
      if (arguments.length > 1) {
        text = formatStringFromArgs(text, arguments, 1);
      }
      return {
        file: undefined,
        start: undefined,
        length: undefined,
        messageText: text,
        category: message.category,
        code: message.code
      };
    }
    ts.createCompilerDiagnostic = createCompilerDiagnostic;
    function chainDiagnosticMessages(details, message) {
      var text = getLocaleSpecificMessage(message);
      if (arguments.length > 2) {
        text = formatStringFromArgs(text, arguments, 2);
      }
      return {
        messageText: text,
        category: message.category,
        code: message.code,
        next: details
      };
    }
    ts.chainDiagnosticMessages = chainDiagnosticMessages;
    function concatenateDiagnosticMessageChains(headChain, tailChain) {
      var lastChain = headChain;
      while (lastChain.next) {
        lastChain = lastChain.next;
      }
      lastChain.next = tailChain;
      return headChain;
    }
    ts.concatenateDiagnosticMessageChains = concatenateDiagnosticMessageChains;
    function compareValues(a, b) {
      if (a === b)
        return 0;
      if (a === undefined)
        return -1;
      if (b === undefined)
        return 1;
      return a < b ? -1 : 1;
    }
    ts.compareValues = compareValues;
    function getDiagnosticFileName(diagnostic) {
      return diagnostic.file ? diagnostic.file.fileName : undefined;
    }
    function compareDiagnostics(d1, d2) {
      return compareValues(getDiagnosticFileName(d1), getDiagnosticFileName(d2)) || compareValues(d1.start, d2.start) || compareValues(d1.length, d2.length) || compareValues(d1.code, d2.code) || compareMessageText(d1.messageText, d2.messageText) || 0;
    }
    ts.compareDiagnostics = compareDiagnostics;
    function compareMessageText(text1, text2) {
      while (text1 && text2) {
        var string1 = typeof text1 === "string" ? text1 : text1.messageText;
        var string2 = typeof text2 === "string" ? text2 : text2.messageText;
        var res = compareValues(string1, string2);
        if (res) {
          return res;
        }
        text1 = typeof text1 === "string" ? undefined : text1.next;
        text2 = typeof text2 === "string" ? undefined : text2.next;
      }
      if (!text1 && !text2) {
        return 0;
      }
      return text1 ? 1 : -1;
    }
    function sortAndDeduplicateDiagnostics(diagnostics) {
      return deduplicateSortedDiagnostics(diagnostics.sort(compareDiagnostics));
    }
    ts.sortAndDeduplicateDiagnostics = sortAndDeduplicateDiagnostics;
    function deduplicateSortedDiagnostics(diagnostics) {
      if (diagnostics.length < 2) {
        return diagnostics;
      }
      var newDiagnostics = [diagnostics[0]];
      var previousDiagnostic = diagnostics[0];
      for (var i = 1; i < diagnostics.length; i++) {
        var currentDiagnostic = diagnostics[i];
        var isDupe = compareDiagnostics(currentDiagnostic, previousDiagnostic) === 0;
        if (!isDupe) {
          newDiagnostics.push(currentDiagnostic);
          previousDiagnostic = currentDiagnostic;
        }
      }
      return newDiagnostics;
    }
    ts.deduplicateSortedDiagnostics = deduplicateSortedDiagnostics;
    function normalizeSlashes(path) {
      return path.replace(/\\/g, "/");
    }
    ts.normalizeSlashes = normalizeSlashes;
    function getRootLength(path) {
      if (path.charCodeAt(0) === 47) {
        if (path.charCodeAt(1) !== 47)
          return 1;
        var p1 = path.indexOf("/", 2);
        if (p1 < 0)
          return 2;
        var p2 = path.indexOf("/", p1 + 1);
        if (p2 < 0)
          return p1 + 1;
        return p2 + 1;
      }
      if (path.charCodeAt(1) === 58) {
        if (path.charCodeAt(2) === 47)
          return 3;
        return 2;
      }
      if (path.lastIndexOf("file:///", 0) === 0) {
        return "file:///".length;
      }
      var idx = path.indexOf("://");
      if (idx !== -1) {
        return idx + "://".length;
      }
      return 0;
    }
    ts.getRootLength = getRootLength;
    ts.directorySeparator = "/";
    function getNormalizedParts(normalizedSlashedPath, rootLength) {
      var parts = normalizedSlashedPath.substr(rootLength).split(ts.directorySeparator);
      var normalized = [];
      for (var _i = 0,
          parts_1 = parts; _i < parts_1.length; _i++) {
        var part = parts_1[_i];
        if (part !== ".") {
          if (part === ".." && normalized.length > 0 && lastOrUndefined(normalized) !== "..") {
            normalized.pop();
          } else {
            if (part) {
              normalized.push(part);
            }
          }
        }
      }
      return normalized;
    }
    function normalizePath(path) {
      path = normalizeSlashes(path);
      var rootLength = getRootLength(path);
      var normalized = getNormalizedParts(path, rootLength);
      return path.substr(0, rootLength) + normalized.join(ts.directorySeparator);
    }
    ts.normalizePath = normalizePath;
    function getDirectoryPath(path) {
      return path.substr(0, Math.max(getRootLength(path), path.lastIndexOf(ts.directorySeparator)));
    }
    ts.getDirectoryPath = getDirectoryPath;
    function isUrl(path) {
      return path && !isRootedDiskPath(path) && path.indexOf("://") !== -1;
    }
    ts.isUrl = isUrl;
    function isRootedDiskPath(path) {
      return getRootLength(path) !== 0;
    }
    ts.isRootedDiskPath = isRootedDiskPath;
    function normalizedPathComponents(path, rootLength) {
      var normalizedParts = getNormalizedParts(path, rootLength);
      return [path.substr(0, rootLength)].concat(normalizedParts);
    }
    function getNormalizedPathComponents(path, currentDirectory) {
      path = normalizeSlashes(path);
      var rootLength = getRootLength(path);
      if (rootLength === 0) {
        path = combinePaths(normalizeSlashes(currentDirectory), path);
        rootLength = getRootLength(path);
      }
      return normalizedPathComponents(path, rootLength);
    }
    ts.getNormalizedPathComponents = getNormalizedPathComponents;
    function getNormalizedAbsolutePath(fileName, currentDirectory) {
      return getNormalizedPathFromPathComponents(getNormalizedPathComponents(fileName, currentDirectory));
    }
    ts.getNormalizedAbsolutePath = getNormalizedAbsolutePath;
    function getNormalizedPathFromPathComponents(pathComponents) {
      if (pathComponents && pathComponents.length) {
        return pathComponents[0] + pathComponents.slice(1).join(ts.directorySeparator);
      }
    }
    ts.getNormalizedPathFromPathComponents = getNormalizedPathFromPathComponents;
    function getNormalizedPathComponentsOfUrl(url) {
      var urlLength = url.length;
      var rootLength = url.indexOf("://") + "://".length;
      while (rootLength < urlLength) {
        if (url.charCodeAt(rootLength) === 47) {
          rootLength++;
        } else {
          break;
        }
      }
      if (rootLength === urlLength) {
        return [url];
      }
      var indexOfNextSlash = url.indexOf(ts.directorySeparator, rootLength);
      if (indexOfNextSlash !== -1) {
        rootLength = indexOfNextSlash + 1;
        return normalizedPathComponents(url, rootLength);
      } else {
        return [url + ts.directorySeparator];
      }
    }
    function getNormalizedPathOrUrlComponents(pathOrUrl, currentDirectory) {
      if (isUrl(pathOrUrl)) {
        return getNormalizedPathComponentsOfUrl(pathOrUrl);
      } else {
        return getNormalizedPathComponents(pathOrUrl, currentDirectory);
      }
    }
    function getRelativePathToDirectoryOrUrl(directoryPathOrUrl, relativeOrAbsolutePath, currentDirectory, getCanonicalFileName, isAbsolutePathAnUrl) {
      var pathComponents = getNormalizedPathOrUrlComponents(relativeOrAbsolutePath, currentDirectory);
      var directoryComponents = getNormalizedPathOrUrlComponents(directoryPathOrUrl, currentDirectory);
      if (directoryComponents.length > 1 && lastOrUndefined(directoryComponents) === "") {
        directoryComponents.length--;
      }
      var joinStartIndex;
      for (joinStartIndex = 0; joinStartIndex < pathComponents.length && joinStartIndex < directoryComponents.length; joinStartIndex++) {
        if (getCanonicalFileName(directoryComponents[joinStartIndex]) !== getCanonicalFileName(pathComponents[joinStartIndex])) {
          break;
        }
      }
      if (joinStartIndex) {
        var relativePath = "";
        var relativePathComponents = pathComponents.slice(joinStartIndex, pathComponents.length);
        for (; joinStartIndex < directoryComponents.length; joinStartIndex++) {
          if (directoryComponents[joinStartIndex] !== "") {
            relativePath = relativePath + ".." + ts.directorySeparator;
          }
        }
        return relativePath + relativePathComponents.join(ts.directorySeparator);
      }
      var absolutePath = getNormalizedPathFromPathComponents(pathComponents);
      if (isAbsolutePathAnUrl && isRootedDiskPath(absolutePath)) {
        absolutePath = "file:///" + absolutePath;
      }
      return absolutePath;
    }
    ts.getRelativePathToDirectoryOrUrl = getRelativePathToDirectoryOrUrl;
    function getBaseFileName(path) {
      if (path === undefined) {
        return undefined;
      }
      var i = path.lastIndexOf(ts.directorySeparator);
      return i < 0 ? path : path.substring(i + 1);
    }
    ts.getBaseFileName = getBaseFileName;
    function combinePaths(path1, path2) {
      if (!(path1 && path1.length))
        return path2;
      if (!(path2 && path2.length))
        return path1;
      if (getRootLength(path2) !== 0)
        return path2;
      if (path1.charAt(path1.length - 1) === ts.directorySeparator)
        return path1 + path2;
      return path1 + ts.directorySeparator + path2;
    }
    ts.combinePaths = combinePaths;
    function fileExtensionIs(path, extension) {
      var pathLen = path.length;
      var extLen = extension.length;
      return pathLen > extLen && path.substr(pathLen - extLen, extLen) === extension;
    }
    ts.fileExtensionIs = fileExtensionIs;
    function ensureScriptKind(fileName, scriptKind) {
      return (scriptKind || getScriptKindFromFileName(fileName)) || 3;
    }
    ts.ensureScriptKind = ensureScriptKind;
    function getScriptKindFromFileName(fileName) {
      var ext = fileName.substr(fileName.lastIndexOf("."));
      switch (ext.toLowerCase()) {
        case ".js":
          return 1;
        case ".jsx":
          return 2;
        case ".ts":
          return 3;
        case ".tsx":
          return 4;
        default:
          return 0;
      }
    }
    ts.getScriptKindFromFileName = getScriptKindFromFileName;
    ts.supportedTypeScriptExtensions = [".ts", ".tsx", ".d.ts"];
    ts.supportedJavascriptExtensions = [".js", ".jsx"];
    var allSupportedExtensions = ts.supportedTypeScriptExtensions.concat(ts.supportedJavascriptExtensions);
    function getSupportedExtensions(options) {
      return options && options.allowJs ? allSupportedExtensions : ts.supportedTypeScriptExtensions;
    }
    ts.getSupportedExtensions = getSupportedExtensions;
    function isSupportedSourceFileName(fileName, compilerOptions) {
      if (!fileName) {
        return false;
      }
      for (var _i = 0,
          _a = getSupportedExtensions(compilerOptions); _i < _a.length; _i++) {
        var extension = _a[_i];
        if (fileExtensionIs(fileName, extension)) {
          return true;
        }
      }
      return false;
    }
    ts.isSupportedSourceFileName = isSupportedSourceFileName;
    var extensionsToRemove = [".d.ts", ".ts", ".js", ".tsx", ".jsx"];
    function removeFileExtension(path) {
      for (var _i = 0,
          extensionsToRemove_1 = extensionsToRemove; _i < extensionsToRemove_1.length; _i++) {
        var ext = extensionsToRemove_1[_i];
        if (fileExtensionIs(path, ext)) {
          return path.substr(0, path.length - ext.length);
        }
      }
      return path;
    }
    ts.removeFileExtension = removeFileExtension;
    function Symbol(flags, name) {
      this.flags = flags;
      this.name = name;
      this.declarations = undefined;
    }
    function Type(checker, flags) {
      this.flags = flags;
    }
    function Signature(checker) {}
    function Node(kind, pos, end) {
      this.kind = kind;
      this.pos = pos;
      this.end = end;
      this.flags = 0;
      this.parent = undefined;
    }
    ts.objectAllocator = {
      getNodeConstructor: function() {
        return Node;
      },
      getSourceFileConstructor: function() {
        return Node;
      },
      getSymbolConstructor: function() {
        return Symbol;
      },
      getTypeConstructor: function() {
        return Type;
      },
      getSignatureConstructor: function() {
        return Signature;
      }
    };
    var Debug;
    (function(Debug) {
      var currentAssertionLevel = 0;
      function shouldAssert(level) {
        return currentAssertionLevel >= level;
      }
      Debug.shouldAssert = shouldAssert;
      function assert(expression, message, verboseDebugInfo) {
        if (!expression) {
          var verboseDebugString = "";
          if (verboseDebugInfo) {
            verboseDebugString = "\r\nVerbose Debug Information: " + verboseDebugInfo();
          }
          debugger;
          throw new Error("Debug Failure. False expression: " + (message || "") + verboseDebugString);
        }
      }
      Debug.assert = assert;
      function fail(message) {
        Debug.assert(false, message);
      }
      Debug.fail = fail;
    })(Debug = ts.Debug || (ts.Debug = {}));
    function copyListRemovingItem(item, list) {
      var copiedList = [];
      for (var _i = 0,
          list_1 = list; _i < list_1.length; _i++) {
        var e = list_1[_i];
        if (e !== item) {
          copiedList.push(e);
        }
      }
      return copiedList;
    }
    ts.copyListRemovingItem = copyListRemovingItem;
    function createGetCanonicalFileName(useCaseSensitivefileNames) {
      return useCaseSensitivefileNames ? (function(fileName) {
        return fileName;
      }) : (function(fileName) {
        return fileName.toLowerCase();
      });
    }
    ts.createGetCanonicalFileName = createGetCanonicalFileName;
  })(ts || (ts = {}));
  var ts;
  (function(ts) {
    ts.sys = (function() {
      function getWScriptSystem() {
        var fso = new ActiveXObject("Scripting.FileSystemObject");
        var fileStream = new ActiveXObject("ADODB.Stream");
        fileStream.Type = 2;
        var binaryStream = new ActiveXObject("ADODB.Stream");
        binaryStream.Type = 1;
        var args = [];
        for (var i = 0; i < WScript.Arguments.length; i++) {
          args[i] = WScript.Arguments.Item(i);
        }
        function readFile(fileName, encoding) {
          if (!fso.FileExists(fileName)) {
            return undefined;
          }
          fileStream.Open();
          try {
            if (encoding) {
              fileStream.Charset = encoding;
              fileStream.LoadFromFile(fileName);
            } else {
              fileStream.Charset = "x-ansi";
              fileStream.LoadFromFile(fileName);
              var bom = fileStream.ReadText(2) || "";
              fileStream.Position = 0;
              fileStream.Charset = bom.length >= 2 && (bom.charCodeAt(0) === 0xFF && bom.charCodeAt(1) === 0xFE || bom.charCodeAt(0) === 0xFE && bom.charCodeAt(1) === 0xFF) ? "unicode" : "utf-8";
            }
            return fileStream.ReadText();
          } catch (e) {
            throw e;
          } finally {
            fileStream.Close();
          }
        }
        function writeFile(fileName, data, writeByteOrderMark) {
          fileStream.Open();
          binaryStream.Open();
          try {
            fileStream.Charset = "utf-8";
            fileStream.WriteText(data);
            if (writeByteOrderMark) {
              fileStream.Position = 0;
            } else {
              fileStream.Position = 3;
            }
            fileStream.CopyTo(binaryStream);
            binaryStream.SaveToFile(fileName, 2);
          } finally {
            binaryStream.Close();
            fileStream.Close();
          }
        }
        function getCanonicalPath(path) {
          return path.toLowerCase();
        }
        function getNames(collection) {
          var result = [];
          for (var e = new Enumerator(collection); !e.atEnd(); e.moveNext()) {
            result.push(e.item().Name);
          }
          return result.sort();
        }
        function readDirectory(path, extension, exclude) {
          var result = [];
          exclude = ts.map(exclude, function(s) {
            return getCanonicalPath(ts.combinePaths(path, s));
          });
          visitDirectory(path);
          return result;
          function visitDirectory(path) {
            var folder = fso.GetFolder(path || ".");
            var files = getNames(folder.files);
            for (var _i = 0,
                files_1 = files; _i < files_1.length; _i++) {
              var current = files_1[_i];
              var name_1 = ts.combinePaths(path, current);
              if ((!extension || ts.fileExtensionIs(name_1, extension)) && !ts.contains(exclude, getCanonicalPath(name_1))) {
                result.push(name_1);
              }
            }
            var subfolders = getNames(folder.subfolders);
            for (var _a = 0,
                subfolders_1 = subfolders; _a < subfolders_1.length; _a++) {
              var current = subfolders_1[_a];
              var name_2 = ts.combinePaths(path, current);
              if (!ts.contains(exclude, getCanonicalPath(name_2))) {
                visitDirectory(name_2);
              }
            }
          }
        }
        return {
          args: args,
          newLine: "\r\n",
          useCaseSensitiveFileNames: false,
          write: function(s) {
            WScript.StdOut.Write(s);
          },
          readFile: readFile,
          writeFile: writeFile,
          resolvePath: function(path) {
            return fso.GetAbsolutePathName(path);
          },
          fileExists: function(path) {
            return fso.FileExists(path);
          },
          directoryExists: function(path) {
            return fso.FolderExists(path);
          },
          createDirectory: function(directoryName) {
            if (!this.directoryExists(directoryName)) {
              fso.CreateFolder(directoryName);
            }
          },
          getExecutingFilePath: function() {
            return WScript.ScriptFullName;
          },
          getCurrentDirectory: function() {
            return new ActiveXObject("WScript.Shell").CurrentDirectory;
          },
          readDirectory: readDirectory,
          exit: function(exitCode) {
            try {
              WScript.Quit(exitCode);
            } catch (e) {}
          }
        };
      }
      function getNodeSystem() {
        var _fs = require('@empty');
        var _path = require('@empty');
        var _os = require('os');
        function createPollingWatchedFileSet(interval, chunkSize) {
          if (interval === void 0) {
            interval = 2500;
          }
          if (chunkSize === void 0) {
            chunkSize = 30;
          }
          var watchedFiles = [];
          var nextFileToCheck = 0;
          var watchTimer;
          function getModifiedTime(fileName) {
            return _fs.statSync(fileName).mtime;
          }
          function poll(checkedIndex) {
            var watchedFile = watchedFiles[checkedIndex];
            if (!watchedFile) {
              return;
            }
            _fs.stat(watchedFile.filePath, function(err, stats) {
              if (err) {
                watchedFile.callback(watchedFile.filePath);
              } else if (watchedFile.mtime.getTime() !== stats.mtime.getTime()) {
                watchedFile.mtime = getModifiedTime(watchedFile.filePath);
                watchedFile.callback(watchedFile.filePath, watchedFile.mtime.getTime() === 0);
              }
            });
          }
          function startWatchTimer() {
            watchTimer = setInterval(function() {
              var count = 0;
              var nextToCheck = nextFileToCheck;
              var firstCheck = -1;
              while ((count < chunkSize) && (nextToCheck !== firstCheck)) {
                poll(nextToCheck);
                if (firstCheck < 0) {
                  firstCheck = nextToCheck;
                }
                nextToCheck++;
                if (nextToCheck === watchedFiles.length) {
                  nextToCheck = 0;
                }
                count++;
              }
              nextFileToCheck = nextToCheck;
            }, interval);
          }
          function addFile(filePath, callback) {
            var file = {
              filePath: filePath,
              callback: callback,
              mtime: getModifiedTime(filePath)
            };
            watchedFiles.push(file);
            if (watchedFiles.length === 1) {
              startWatchTimer();
            }
            return file;
          }
          function removeFile(file) {
            watchedFiles = ts.copyListRemovingItem(file, watchedFiles);
          }
          return {
            getModifiedTime: getModifiedTime,
            poll: poll,
            startWatchTimer: startWatchTimer,
            addFile: addFile,
            removeFile: removeFile
          };
        }
        function createWatchedFileSet() {
          var dirWatchers = ts.createFileMap();
          var fileWatcherCallbacks = ts.createFileMap();
          return {
            addFile: addFile,
            removeFile: removeFile
          };
          function reduceDirWatcherRefCountForFile(filePath) {
            var dirPath = ts.getDirectoryPath(filePath);
            if (dirWatchers.contains(dirPath)) {
              var watcher = dirWatchers.get(dirPath);
              watcher.referenceCount -= 1;
              if (watcher.referenceCount <= 0) {
                watcher.close();
                dirWatchers.remove(dirPath);
              }
            }
          }
          function addDirWatcher(dirPath) {
            if (dirWatchers.contains(dirPath)) {
              var watcher_1 = dirWatchers.get(dirPath);
              watcher_1.referenceCount += 1;
              return;
            }
            var watcher = _fs.watch(dirPath, {persistent: true}, function(eventName, relativeFileName) {
              return fileEventHandler(eventName, relativeFileName, dirPath);
            });
            watcher.referenceCount = 1;
            dirWatchers.set(dirPath, watcher);
            return;
          }
          function addFileWatcherCallback(filePath, callback) {
            if (fileWatcherCallbacks.contains(filePath)) {
              fileWatcherCallbacks.get(filePath).push(callback);
            } else {
              fileWatcherCallbacks.set(filePath, [callback]);
            }
          }
          function addFile(filePath, callback) {
            addFileWatcherCallback(filePath, callback);
            addDirWatcher(ts.getDirectoryPath(filePath));
            return {
              filePath: filePath,
              callback: callback
            };
          }
          function removeFile(watchedFile) {
            removeFileWatcherCallback(watchedFile.filePath, watchedFile.callback);
            reduceDirWatcherRefCountForFile(watchedFile.filePath);
          }
          function removeFileWatcherCallback(filePath, callback) {
            if (fileWatcherCallbacks.contains(filePath)) {
              var newCallbacks = ts.copyListRemovingItem(callback, fileWatcherCallbacks.get(filePath));
              if (newCallbacks.length === 0) {
                fileWatcherCallbacks.remove(filePath);
              } else {
                fileWatcherCallbacks.set(filePath, newCallbacks);
              }
            }
          }
          function fileEventHandler(eventName, relativeFileName, baseDirPath) {
            var filePath = typeof relativeFileName !== "string" ? undefined : ts.toPath(relativeFileName, baseDirPath, ts.createGetCanonicalFileName(ts.sys.useCaseSensitiveFileNames));
            if ((eventName === "change" || eventName === "rename") && fileWatcherCallbacks.contains(filePath)) {
              for (var _i = 0,
                  _a = fileWatcherCallbacks.get(filePath); _i < _a.length; _i++) {
                var fileCallback = _a[_i];
                fileCallback(filePath);
              }
            }
          }
        }
        var pollingWatchedFileSet = createPollingWatchedFileSet();
        var watchedFileSet = createWatchedFileSet();
        function isNode4OrLater() {
          return parseInt(process.version.charAt(1)) >= 4;
        }
        var platform = _os.platform();
        var useCaseSensitiveFileNames = platform !== "win32" && platform !== "win64" && platform !== "darwin";
        function readFile(fileName, encoding) {
          if (!_fs.existsSync(fileName)) {
            return undefined;
          }
          var buffer = _fs.readFileSync(fileName);
          var len = buffer.length;
          if (len >= 2 && buffer[0] === 0xFE && buffer[1] === 0xFF) {
            len &= ~1;
            for (var i = 0; i < len; i += 2) {
              var temp = buffer[i];
              buffer[i] = buffer[i + 1];
              buffer[i + 1] = temp;
            }
            return buffer.toString("utf16le", 2);
          }
          if (len >= 2 && buffer[0] === 0xFF && buffer[1] === 0xFE) {
            return buffer.toString("utf16le", 2);
          }
          if (len >= 3 && buffer[0] === 0xEF && buffer[1] === 0xBB && buffer[2] === 0xBF) {
            return buffer.toString("utf8", 3);
          }
          return buffer.toString("utf8");
        }
        function writeFile(fileName, data, writeByteOrderMark) {
          if (writeByteOrderMark) {
            data = "\uFEFF" + data;
          }
          var fd;
          try {
            fd = _fs.openSync(fileName, "w");
            _fs.writeSync(fd, data, undefined, "utf8");
          } finally {
            if (fd !== undefined) {
              _fs.closeSync(fd);
            }
          }
        }
        function getCanonicalPath(path) {
          return useCaseSensitiveFileNames ? path : path.toLowerCase();
        }
        function readDirectory(path, extension, exclude) {
          var result = [];
          exclude = ts.map(exclude, function(s) {
            return getCanonicalPath(ts.combinePaths(path, s));
          });
          visitDirectory(path);
          return result;
          function visitDirectory(path) {
            var files = _fs.readdirSync(path || ".").sort();
            var directories = [];
            for (var _i = 0,
                files_2 = files; _i < files_2.length; _i++) {
              var current = files_2[_i];
              var name_3 = ts.combinePaths(path, current);
              if (!ts.contains(exclude, getCanonicalPath(name_3))) {
                try {
                  var stat = _fs.statSync(name_3);
                  if (stat.isFile()) {
                    if (!extension || ts.fileExtensionIs(name_3, extension)) {
                      result.push(name_3);
                    }
                  } else if (stat.isDirectory()) {
                    directories.push(name_3);
                  }
                } catch (e) {}
              }
            }
            for (var _a = 0,
                directories_1 = directories; _a < directories_1.length; _a++) {
              var current = directories_1[_a];
              visitDirectory(current);
            }
          }
        }
        return {
          args: process.argv.slice(2),
          newLine: _os.EOL,
          useCaseSensitiveFileNames: useCaseSensitiveFileNames,
          write: function(s) {
            process.stdout.write(s);
          },
          readFile: readFile,
          writeFile: writeFile,
          watchFile: function(filePath, callback) {
            var watchSet = isNode4OrLater() ? watchedFileSet : pollingWatchedFileSet;
            var watchedFile = watchSet.addFile(filePath, callback);
            return {close: function() {
                return watchSet.removeFile(watchedFile);
              }};
          },
          watchDirectory: function(path, callback, recursive) {
            var options;
            if (isNode4OrLater() && (process.platform === "win32" || process.platform === "darwin")) {
              options = {
                persistent: true,
                recursive: !!recursive
              };
            } else {
              options = {persistent: true};
            }
            return _fs.watch(path, options, function(eventName, relativeFileName) {
              if (eventName === "rename") {
                callback(!relativeFileName ? relativeFileName : ts.normalizePath(ts.combinePaths(path, relativeFileName)));
              }
              ;
            });
          },
          resolvePath: function(path) {
            return _path.resolve(path);
          },
          fileExists: function(path) {
            return _fs.existsSync(path);
          },
          directoryExists: function(path) {
            return _fs.existsSync(path) && _fs.statSync(path).isDirectory();
          },
          createDirectory: function(directoryName) {
            if (!this.directoryExists(directoryName)) {
              _fs.mkdirSync(directoryName);
            }
          },
          getExecutingFilePath: function() {
            return __filename;
          },
          getCurrentDirectory: function() {
            return process.cwd();
          },
          readDirectory: readDirectory,
          getMemoryUsage: function() {
            if (global.gc) {
              global.gc();
            }
            return process.memoryUsage().heapUsed;
          },
          exit: function(exitCode) {
            process.exit(exitCode);
          }
        };
      }
      function getChakraSystem() {
        return {
          newLine: ChakraHost.newLine || "\r\n",
          args: ChakraHost.args,
          useCaseSensitiveFileNames: !!ChakraHost.useCaseSensitiveFileNames,
          write: ChakraHost.echo,
          readFile: function(path, encoding) {
            return ChakraHost.readFile(path);
          },
          writeFile: function(path, data, writeByteOrderMark) {
            if (writeByteOrderMark) {
              data = "\uFEFF" + data;
            }
            ChakraHost.writeFile(path, data);
          },
          resolvePath: ChakraHost.resolvePath,
          fileExists: ChakraHost.fileExists,
          directoryExists: ChakraHost.directoryExists,
          createDirectory: ChakraHost.createDirectory,
          getExecutingFilePath: function() {
            return ChakraHost.executingFile;
          },
          getCurrentDirectory: function() {
            return ChakraHost.currentDirectory;
          },
          readDirectory: ChakraHost.readDirectory,
          exit: ChakraHost.quit
        };
      }
      if (typeof WScript !== "undefined" && typeof ActiveXObject === "function") {
        return getWScriptSystem();
      } else if (typeof process !== "undefined" && process.nextTick && !process.browser && typeof require !== "undefined") {
        return getNodeSystem();
      } else if (typeof ChakraHost !== "undefined") {
        return getChakraSystem();
      } else {
        return undefined;
      }
    })();
  })(ts || (ts = {}));
  var ts;
  (function(ts) {
    ts.Diagnostics = {
      Unterminated_string_literal: {
        code: 1002,
        category: ts.DiagnosticCategory.Error,
        key: "Unterminated_string_literal_1002",
        message: "Unterminated string literal."
      },
      Identifier_expected: {
        code: 1003,
        category: ts.DiagnosticCategory.Error,
        key: "Identifier_expected_1003",
        message: "Identifier expected."
      },
      _0_expected: {
        code: 1005,
        category: ts.DiagnosticCategory.Error,
        key: "_0_expected_1005",
        message: "'{0}' expected."
      },
      A_file_cannot_have_a_reference_to_itself: {
        code: 1006,
        category: ts.DiagnosticCategory.Error,
        key: "A_file_cannot_have_a_reference_to_itself_1006",
        message: "A file cannot have a reference to itself."
      },
      Trailing_comma_not_allowed: {
        code: 1009,
        category: ts.DiagnosticCategory.Error,
        key: "Trailing_comma_not_allowed_1009",
        message: "Trailing comma not allowed."
      },
      Asterisk_Slash_expected: {
        code: 1010,
        category: ts.DiagnosticCategory.Error,
        key: "Asterisk_Slash_expected_1010",
        message: "'*/' expected."
      },
      Unexpected_token: {
        code: 1012,
        category: ts.DiagnosticCategory.Error,
        key: "Unexpected_token_1012",
        message: "Unexpected token."
      },
      A_rest_parameter_must_be_last_in_a_parameter_list: {
        code: 1014,
        category: ts.DiagnosticCategory.Error,
        key: "A_rest_parameter_must_be_last_in_a_parameter_list_1014",
        message: "A rest parameter must be last in a parameter list."
      },
      Parameter_cannot_have_question_mark_and_initializer: {
        code: 1015,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_cannot_have_question_mark_and_initializer_1015",
        message: "Parameter cannot have question mark and initializer."
      },
      A_required_parameter_cannot_follow_an_optional_parameter: {
        code: 1016,
        category: ts.DiagnosticCategory.Error,
        key: "A_required_parameter_cannot_follow_an_optional_parameter_1016",
        message: "A required parameter cannot follow an optional parameter."
      },
      An_index_signature_cannot_have_a_rest_parameter: {
        code: 1017,
        category: ts.DiagnosticCategory.Error,
        key: "An_index_signature_cannot_have_a_rest_parameter_1017",
        message: "An index signature cannot have a rest parameter."
      },
      An_index_signature_parameter_cannot_have_an_accessibility_modifier: {
        code: 1018,
        category: ts.DiagnosticCategory.Error,
        key: "An_index_signature_parameter_cannot_have_an_accessibility_modifier_1018",
        message: "An index signature parameter cannot have an accessibility modifier."
      },
      An_index_signature_parameter_cannot_have_a_question_mark: {
        code: 1019,
        category: ts.DiagnosticCategory.Error,
        key: "An_index_signature_parameter_cannot_have_a_question_mark_1019",
        message: "An index signature parameter cannot have a question mark."
      },
      An_index_signature_parameter_cannot_have_an_initializer: {
        code: 1020,
        category: ts.DiagnosticCategory.Error,
        key: "An_index_signature_parameter_cannot_have_an_initializer_1020",
        message: "An index signature parameter cannot have an initializer."
      },
      An_index_signature_must_have_a_type_annotation: {
        code: 1021,
        category: ts.DiagnosticCategory.Error,
        key: "An_index_signature_must_have_a_type_annotation_1021",
        message: "An index signature must have a type annotation."
      },
      An_index_signature_parameter_must_have_a_type_annotation: {
        code: 1022,
        category: ts.DiagnosticCategory.Error,
        key: "An_index_signature_parameter_must_have_a_type_annotation_1022",
        message: "An index signature parameter must have a type annotation."
      },
      An_index_signature_parameter_type_must_be_string_or_number: {
        code: 1023,
        category: ts.DiagnosticCategory.Error,
        key: "An_index_signature_parameter_type_must_be_string_or_number_1023",
        message: "An index signature parameter type must be 'string' or 'number'."
      },
      Accessibility_modifier_already_seen: {
        code: 1028,
        category: ts.DiagnosticCategory.Error,
        key: "Accessibility_modifier_already_seen_1028",
        message: "Accessibility modifier already seen."
      },
      _0_modifier_must_precede_1_modifier: {
        code: 1029,
        category: ts.DiagnosticCategory.Error,
        key: "_0_modifier_must_precede_1_modifier_1029",
        message: "'{0}' modifier must precede '{1}' modifier."
      },
      _0_modifier_already_seen: {
        code: 1030,
        category: ts.DiagnosticCategory.Error,
        key: "_0_modifier_already_seen_1030",
        message: "'{0}' modifier already seen."
      },
      _0_modifier_cannot_appear_on_a_class_element: {
        code: 1031,
        category: ts.DiagnosticCategory.Error,
        key: "_0_modifier_cannot_appear_on_a_class_element_1031",
        message: "'{0}' modifier cannot appear on a class element."
      },
      super_must_be_followed_by_an_argument_list_or_member_access: {
        code: 1034,
        category: ts.DiagnosticCategory.Error,
        key: "super_must_be_followed_by_an_argument_list_or_member_access_1034",
        message: "'super' must be followed by an argument list or member access."
      },
      Only_ambient_modules_can_use_quoted_names: {
        code: 1035,
        category: ts.DiagnosticCategory.Error,
        key: "Only_ambient_modules_can_use_quoted_names_1035",
        message: "Only ambient modules can use quoted names."
      },
      Statements_are_not_allowed_in_ambient_contexts: {
        code: 1036,
        category: ts.DiagnosticCategory.Error,
        key: "Statements_are_not_allowed_in_ambient_contexts_1036",
        message: "Statements are not allowed in ambient contexts."
      },
      A_declare_modifier_cannot_be_used_in_an_already_ambient_context: {
        code: 1038,
        category: ts.DiagnosticCategory.Error,
        key: "A_declare_modifier_cannot_be_used_in_an_already_ambient_context_1038",
        message: "A 'declare' modifier cannot be used in an already ambient context."
      },
      Initializers_are_not_allowed_in_ambient_contexts: {
        code: 1039,
        category: ts.DiagnosticCategory.Error,
        key: "Initializers_are_not_allowed_in_ambient_contexts_1039",
        message: "Initializers are not allowed in ambient contexts."
      },
      _0_modifier_cannot_be_used_in_an_ambient_context: {
        code: 1040,
        category: ts.DiagnosticCategory.Error,
        key: "_0_modifier_cannot_be_used_in_an_ambient_context_1040",
        message: "'{0}' modifier cannot be used in an ambient context."
      },
      _0_modifier_cannot_be_used_with_a_class_declaration: {
        code: 1041,
        category: ts.DiagnosticCategory.Error,
        key: "_0_modifier_cannot_be_used_with_a_class_declaration_1041",
        message: "'{0}' modifier cannot be used with a class declaration."
      },
      _0_modifier_cannot_be_used_here: {
        code: 1042,
        category: ts.DiagnosticCategory.Error,
        key: "_0_modifier_cannot_be_used_here_1042",
        message: "'{0}' modifier cannot be used here."
      },
      _0_modifier_cannot_appear_on_a_data_property: {
        code: 1043,
        category: ts.DiagnosticCategory.Error,
        key: "_0_modifier_cannot_appear_on_a_data_property_1043",
        message: "'{0}' modifier cannot appear on a data property."
      },
      _0_modifier_cannot_appear_on_a_module_element: {
        code: 1044,
        category: ts.DiagnosticCategory.Error,
        key: "_0_modifier_cannot_appear_on_a_module_element_1044",
        message: "'{0}' modifier cannot appear on a module element."
      },
      A_0_modifier_cannot_be_used_with_an_interface_declaration: {
        code: 1045,
        category: ts.DiagnosticCategory.Error,
        key: "A_0_modifier_cannot_be_used_with_an_interface_declaration_1045",
        message: "A '{0}' modifier cannot be used with an interface declaration."
      },
      A_declare_modifier_is_required_for_a_top_level_declaration_in_a_d_ts_file: {
        code: 1046,
        category: ts.DiagnosticCategory.Error,
        key: "A_declare_modifier_is_required_for_a_top_level_declaration_in_a_d_ts_file_1046",
        message: "A 'declare' modifier is required for a top level declaration in a .d.ts file."
      },
      A_rest_parameter_cannot_be_optional: {
        code: 1047,
        category: ts.DiagnosticCategory.Error,
        key: "A_rest_parameter_cannot_be_optional_1047",
        message: "A rest parameter cannot be optional."
      },
      A_rest_parameter_cannot_have_an_initializer: {
        code: 1048,
        category: ts.DiagnosticCategory.Error,
        key: "A_rest_parameter_cannot_have_an_initializer_1048",
        message: "A rest parameter cannot have an initializer."
      },
      A_set_accessor_must_have_exactly_one_parameter: {
        code: 1049,
        category: ts.DiagnosticCategory.Error,
        key: "A_set_accessor_must_have_exactly_one_parameter_1049",
        message: "A 'set' accessor must have exactly one parameter."
      },
      A_set_accessor_cannot_have_an_optional_parameter: {
        code: 1051,
        category: ts.DiagnosticCategory.Error,
        key: "A_set_accessor_cannot_have_an_optional_parameter_1051",
        message: "A 'set' accessor cannot have an optional parameter."
      },
      A_set_accessor_parameter_cannot_have_an_initializer: {
        code: 1052,
        category: ts.DiagnosticCategory.Error,
        key: "A_set_accessor_parameter_cannot_have_an_initializer_1052",
        message: "A 'set' accessor parameter cannot have an initializer."
      },
      A_set_accessor_cannot_have_rest_parameter: {
        code: 1053,
        category: ts.DiagnosticCategory.Error,
        key: "A_set_accessor_cannot_have_rest_parameter_1053",
        message: "A 'set' accessor cannot have rest parameter."
      },
      A_get_accessor_cannot_have_parameters: {
        code: 1054,
        category: ts.DiagnosticCategory.Error,
        key: "A_get_accessor_cannot_have_parameters_1054",
        message: "A 'get' accessor cannot have parameters."
      },
      Type_0_is_not_a_valid_async_function_return_type: {
        code: 1055,
        category: ts.DiagnosticCategory.Error,
        key: "Type_0_is_not_a_valid_async_function_return_type_1055",
        message: "Type '{0}' is not a valid async function return type."
      },
      Accessors_are_only_available_when_targeting_ECMAScript_5_and_higher: {
        code: 1056,
        category: ts.DiagnosticCategory.Error,
        key: "Accessors_are_only_available_when_targeting_ECMAScript_5_and_higher_1056",
        message: "Accessors are only available when targeting ECMAScript 5 and higher."
      },
      An_async_function_or_method_must_have_a_valid_awaitable_return_type: {
        code: 1057,
        category: ts.DiagnosticCategory.Error,
        key: "An_async_function_or_method_must_have_a_valid_awaitable_return_type_1057",
        message: "An async function or method must have a valid awaitable return type."
      },
      Operand_for_await_does_not_have_a_valid_callable_then_member: {
        code: 1058,
        category: ts.DiagnosticCategory.Error,
        key: "Operand_for_await_does_not_have_a_valid_callable_then_member_1058",
        message: "Operand for 'await' does not have a valid callable 'then' member."
      },
      Return_expression_in_async_function_does_not_have_a_valid_callable_then_member: {
        code: 1059,
        category: ts.DiagnosticCategory.Error,
        key: "Return_expression_in_async_function_does_not_have_a_valid_callable_then_member_1059",
        message: "Return expression in async function does not have a valid callable 'then' member."
      },
      Expression_body_for_async_arrow_function_does_not_have_a_valid_callable_then_member: {
        code: 1060,
        category: ts.DiagnosticCategory.Error,
        key: "Expression_body_for_async_arrow_function_does_not_have_a_valid_callable_then_member_1060",
        message: "Expression body for async arrow function does not have a valid callable 'then' member."
      },
      Enum_member_must_have_initializer: {
        code: 1061,
        category: ts.DiagnosticCategory.Error,
        key: "Enum_member_must_have_initializer_1061",
        message: "Enum member must have initializer."
      },
      _0_is_referenced_directly_or_indirectly_in_the_fulfillment_callback_of_its_own_then_method: {
        code: 1062,
        category: ts.DiagnosticCategory.Error,
        key: "_0_is_referenced_directly_or_indirectly_in_the_fulfillment_callback_of_its_own_then_method_1062",
        message: "{0} is referenced directly or indirectly in the fulfillment callback of its own 'then' method."
      },
      An_export_assignment_cannot_be_used_in_a_namespace: {
        code: 1063,
        category: ts.DiagnosticCategory.Error,
        key: "An_export_assignment_cannot_be_used_in_a_namespace_1063",
        message: "An export assignment cannot be used in a namespace."
      },
      The_return_type_of_an_async_function_or_method_must_be_the_global_Promise_T_type: {
        code: 1064,
        category: ts.DiagnosticCategory.Error,
        key: "The_return_type_of_an_async_function_or_method_must_be_the_global_Promise_T_type_1064",
        message: "The return type of an async function or method must be the global Promise<T> type."
      },
      In_ambient_enum_declarations_member_initializer_must_be_constant_expression: {
        code: 1066,
        category: ts.DiagnosticCategory.Error,
        key: "In_ambient_enum_declarations_member_initializer_must_be_constant_expression_1066",
        message: "In ambient enum declarations member initializer must be constant expression."
      },
      Unexpected_token_A_constructor_method_accessor_or_property_was_expected: {
        code: 1068,
        category: ts.DiagnosticCategory.Error,
        key: "Unexpected_token_A_constructor_method_accessor_or_property_was_expected_1068",
        message: "Unexpected token. A constructor, method, accessor, or property was expected."
      },
      A_0_modifier_cannot_be_used_with_an_import_declaration: {
        code: 1079,
        category: ts.DiagnosticCategory.Error,
        key: "A_0_modifier_cannot_be_used_with_an_import_declaration_1079",
        message: "A '{0}' modifier cannot be used with an import declaration."
      },
      Invalid_reference_directive_syntax: {
        code: 1084,
        category: ts.DiagnosticCategory.Error,
        key: "Invalid_reference_directive_syntax_1084",
        message: "Invalid 'reference' directive syntax."
      },
      Octal_literals_are_not_available_when_targeting_ECMAScript_5_and_higher: {
        code: 1085,
        category: ts.DiagnosticCategory.Error,
        key: "Octal_literals_are_not_available_when_targeting_ECMAScript_5_and_higher_1085",
        message: "Octal literals are not available when targeting ECMAScript 5 and higher."
      },
      An_accessor_cannot_be_declared_in_an_ambient_context: {
        code: 1086,
        category: ts.DiagnosticCategory.Error,
        key: "An_accessor_cannot_be_declared_in_an_ambient_context_1086",
        message: "An accessor cannot be declared in an ambient context."
      },
      _0_modifier_cannot_appear_on_a_constructor_declaration: {
        code: 1089,
        category: ts.DiagnosticCategory.Error,
        key: "_0_modifier_cannot_appear_on_a_constructor_declaration_1089",
        message: "'{0}' modifier cannot appear on a constructor declaration."
      },
      _0_modifier_cannot_appear_on_a_parameter: {
        code: 1090,
        category: ts.DiagnosticCategory.Error,
        key: "_0_modifier_cannot_appear_on_a_parameter_1090",
        message: "'{0}' modifier cannot appear on a parameter."
      },
      Only_a_single_variable_declaration_is_allowed_in_a_for_in_statement: {
        code: 1091,
        category: ts.DiagnosticCategory.Error,
        key: "Only_a_single_variable_declaration_is_allowed_in_a_for_in_statement_1091",
        message: "Only a single variable declaration is allowed in a 'for...in' statement."
      },
      Type_parameters_cannot_appear_on_a_constructor_declaration: {
        code: 1092,
        category: ts.DiagnosticCategory.Error,
        key: "Type_parameters_cannot_appear_on_a_constructor_declaration_1092",
        message: "Type parameters cannot appear on a constructor declaration."
      },
      Type_annotation_cannot_appear_on_a_constructor_declaration: {
        code: 1093,
        category: ts.DiagnosticCategory.Error,
        key: "Type_annotation_cannot_appear_on_a_constructor_declaration_1093",
        message: "Type annotation cannot appear on a constructor declaration."
      },
      An_accessor_cannot_have_type_parameters: {
        code: 1094,
        category: ts.DiagnosticCategory.Error,
        key: "An_accessor_cannot_have_type_parameters_1094",
        message: "An accessor cannot have type parameters."
      },
      A_set_accessor_cannot_have_a_return_type_annotation: {
        code: 1095,
        category: ts.DiagnosticCategory.Error,
        key: "A_set_accessor_cannot_have_a_return_type_annotation_1095",
        message: "A 'set' accessor cannot have a return type annotation."
      },
      An_index_signature_must_have_exactly_one_parameter: {
        code: 1096,
        category: ts.DiagnosticCategory.Error,
        key: "An_index_signature_must_have_exactly_one_parameter_1096",
        message: "An index signature must have exactly one parameter."
      },
      _0_list_cannot_be_empty: {
        code: 1097,
        category: ts.DiagnosticCategory.Error,
        key: "_0_list_cannot_be_empty_1097",
        message: "'{0}' list cannot be empty."
      },
      Type_parameter_list_cannot_be_empty: {
        code: 1098,
        category: ts.DiagnosticCategory.Error,
        key: "Type_parameter_list_cannot_be_empty_1098",
        message: "Type parameter list cannot be empty."
      },
      Type_argument_list_cannot_be_empty: {
        code: 1099,
        category: ts.DiagnosticCategory.Error,
        key: "Type_argument_list_cannot_be_empty_1099",
        message: "Type argument list cannot be empty."
      },
      Invalid_use_of_0_in_strict_mode: {
        code: 1100,
        category: ts.DiagnosticCategory.Error,
        key: "Invalid_use_of_0_in_strict_mode_1100",
        message: "Invalid use of '{0}' in strict mode."
      },
      with_statements_are_not_allowed_in_strict_mode: {
        code: 1101,
        category: ts.DiagnosticCategory.Error,
        key: "with_statements_are_not_allowed_in_strict_mode_1101",
        message: "'with' statements are not allowed in strict mode."
      },
      delete_cannot_be_called_on_an_identifier_in_strict_mode: {
        code: 1102,
        category: ts.DiagnosticCategory.Error,
        key: "delete_cannot_be_called_on_an_identifier_in_strict_mode_1102",
        message: "'delete' cannot be called on an identifier in strict mode."
      },
      A_continue_statement_can_only_be_used_within_an_enclosing_iteration_statement: {
        code: 1104,
        category: ts.DiagnosticCategory.Error,
        key: "A_continue_statement_can_only_be_used_within_an_enclosing_iteration_statement_1104",
        message: "A 'continue' statement can only be used within an enclosing iteration statement."
      },
      A_break_statement_can_only_be_used_within_an_enclosing_iteration_or_switch_statement: {
        code: 1105,
        category: ts.DiagnosticCategory.Error,
        key: "A_break_statement_can_only_be_used_within_an_enclosing_iteration_or_switch_statement_1105",
        message: "A 'break' statement can only be used within an enclosing iteration or switch statement."
      },
      Jump_target_cannot_cross_function_boundary: {
        code: 1107,
        category: ts.DiagnosticCategory.Error,
        key: "Jump_target_cannot_cross_function_boundary_1107",
        message: "Jump target cannot cross function boundary."
      },
      A_return_statement_can_only_be_used_within_a_function_body: {
        code: 1108,
        category: ts.DiagnosticCategory.Error,
        key: "A_return_statement_can_only_be_used_within_a_function_body_1108",
        message: "A 'return' statement can only be used within a function body."
      },
      Expression_expected: {
        code: 1109,
        category: ts.DiagnosticCategory.Error,
        key: "Expression_expected_1109",
        message: "Expression expected."
      },
      Type_expected: {
        code: 1110,
        category: ts.DiagnosticCategory.Error,
        key: "Type_expected_1110",
        message: "Type expected."
      },
      A_class_member_cannot_be_declared_optional: {
        code: 1112,
        category: ts.DiagnosticCategory.Error,
        key: "A_class_member_cannot_be_declared_optional_1112",
        message: "A class member cannot be declared optional."
      },
      A_default_clause_cannot_appear_more_than_once_in_a_switch_statement: {
        code: 1113,
        category: ts.DiagnosticCategory.Error,
        key: "A_default_clause_cannot_appear_more_than_once_in_a_switch_statement_1113",
        message: "A 'default' clause cannot appear more than once in a 'switch' statement."
      },
      Duplicate_label_0: {
        code: 1114,
        category: ts.DiagnosticCategory.Error,
        key: "Duplicate_label_0_1114",
        message: "Duplicate label '{0}'"
      },
      A_continue_statement_can_only_jump_to_a_label_of_an_enclosing_iteration_statement: {
        code: 1115,
        category: ts.DiagnosticCategory.Error,
        key: "A_continue_statement_can_only_jump_to_a_label_of_an_enclosing_iteration_statement_1115",
        message: "A 'continue' statement can only jump to a label of an enclosing iteration statement."
      },
      A_break_statement_can_only_jump_to_a_label_of_an_enclosing_statement: {
        code: 1116,
        category: ts.DiagnosticCategory.Error,
        key: "A_break_statement_can_only_jump_to_a_label_of_an_enclosing_statement_1116",
        message: "A 'break' statement can only jump to a label of an enclosing statement."
      },
      An_object_literal_cannot_have_multiple_properties_with_the_same_name_in_strict_mode: {
        code: 1117,
        category: ts.DiagnosticCategory.Error,
        key: "An_object_literal_cannot_have_multiple_properties_with_the_same_name_in_strict_mode_1117",
        message: "An object literal cannot have multiple properties with the same name in strict mode."
      },
      An_object_literal_cannot_have_multiple_get_Slashset_accessors_with_the_same_name: {
        code: 1118,
        category: ts.DiagnosticCategory.Error,
        key: "An_object_literal_cannot_have_multiple_get_Slashset_accessors_with_the_same_name_1118",
        message: "An object literal cannot have multiple get/set accessors with the same name."
      },
      An_object_literal_cannot_have_property_and_accessor_with_the_same_name: {
        code: 1119,
        category: ts.DiagnosticCategory.Error,
        key: "An_object_literal_cannot_have_property_and_accessor_with_the_same_name_1119",
        message: "An object literal cannot have property and accessor with the same name."
      },
      An_export_assignment_cannot_have_modifiers: {
        code: 1120,
        category: ts.DiagnosticCategory.Error,
        key: "An_export_assignment_cannot_have_modifiers_1120",
        message: "An export assignment cannot have modifiers."
      },
      Octal_literals_are_not_allowed_in_strict_mode: {
        code: 1121,
        category: ts.DiagnosticCategory.Error,
        key: "Octal_literals_are_not_allowed_in_strict_mode_1121",
        message: "Octal literals are not allowed in strict mode."
      },
      A_tuple_type_element_list_cannot_be_empty: {
        code: 1122,
        category: ts.DiagnosticCategory.Error,
        key: "A_tuple_type_element_list_cannot_be_empty_1122",
        message: "A tuple type element list cannot be empty."
      },
      Variable_declaration_list_cannot_be_empty: {
        code: 1123,
        category: ts.DiagnosticCategory.Error,
        key: "Variable_declaration_list_cannot_be_empty_1123",
        message: "Variable declaration list cannot be empty."
      },
      Digit_expected: {
        code: 1124,
        category: ts.DiagnosticCategory.Error,
        key: "Digit_expected_1124",
        message: "Digit expected."
      },
      Hexadecimal_digit_expected: {
        code: 1125,
        category: ts.DiagnosticCategory.Error,
        key: "Hexadecimal_digit_expected_1125",
        message: "Hexadecimal digit expected."
      },
      Unexpected_end_of_text: {
        code: 1126,
        category: ts.DiagnosticCategory.Error,
        key: "Unexpected_end_of_text_1126",
        message: "Unexpected end of text."
      },
      Invalid_character: {
        code: 1127,
        category: ts.DiagnosticCategory.Error,
        key: "Invalid_character_1127",
        message: "Invalid character."
      },
      Declaration_or_statement_expected: {
        code: 1128,
        category: ts.DiagnosticCategory.Error,
        key: "Declaration_or_statement_expected_1128",
        message: "Declaration or statement expected."
      },
      Statement_expected: {
        code: 1129,
        category: ts.DiagnosticCategory.Error,
        key: "Statement_expected_1129",
        message: "Statement expected."
      },
      case_or_default_expected: {
        code: 1130,
        category: ts.DiagnosticCategory.Error,
        key: "case_or_default_expected_1130",
        message: "'case' or 'default' expected."
      },
      Property_or_signature_expected: {
        code: 1131,
        category: ts.DiagnosticCategory.Error,
        key: "Property_or_signature_expected_1131",
        message: "Property or signature expected."
      },
      Enum_member_expected: {
        code: 1132,
        category: ts.DiagnosticCategory.Error,
        key: "Enum_member_expected_1132",
        message: "Enum member expected."
      },
      Variable_declaration_expected: {
        code: 1134,
        category: ts.DiagnosticCategory.Error,
        key: "Variable_declaration_expected_1134",
        message: "Variable declaration expected."
      },
      Argument_expression_expected: {
        code: 1135,
        category: ts.DiagnosticCategory.Error,
        key: "Argument_expression_expected_1135",
        message: "Argument expression expected."
      },
      Property_assignment_expected: {
        code: 1136,
        category: ts.DiagnosticCategory.Error,
        key: "Property_assignment_expected_1136",
        message: "Property assignment expected."
      },
      Expression_or_comma_expected: {
        code: 1137,
        category: ts.DiagnosticCategory.Error,
        key: "Expression_or_comma_expected_1137",
        message: "Expression or comma expected."
      },
      Parameter_declaration_expected: {
        code: 1138,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_declaration_expected_1138",
        message: "Parameter declaration expected."
      },
      Type_parameter_declaration_expected: {
        code: 1139,
        category: ts.DiagnosticCategory.Error,
        key: "Type_parameter_declaration_expected_1139",
        message: "Type parameter declaration expected."
      },
      Type_argument_expected: {
        code: 1140,
        category: ts.DiagnosticCategory.Error,
        key: "Type_argument_expected_1140",
        message: "Type argument expected."
      },
      String_literal_expected: {
        code: 1141,
        category: ts.DiagnosticCategory.Error,
        key: "String_literal_expected_1141",
        message: "String literal expected."
      },
      Line_break_not_permitted_here: {
        code: 1142,
        category: ts.DiagnosticCategory.Error,
        key: "Line_break_not_permitted_here_1142",
        message: "Line break not permitted here."
      },
      or_expected: {
        code: 1144,
        category: ts.DiagnosticCategory.Error,
        key: "or_expected_1144",
        message: "'{' or ';' expected."
      },
      Modifiers_not_permitted_on_index_signature_members: {
        code: 1145,
        category: ts.DiagnosticCategory.Error,
        key: "Modifiers_not_permitted_on_index_signature_members_1145",
        message: "Modifiers not permitted on index signature members."
      },
      Declaration_expected: {
        code: 1146,
        category: ts.DiagnosticCategory.Error,
        key: "Declaration_expected_1146",
        message: "Declaration expected."
      },
      Import_declarations_in_a_namespace_cannot_reference_a_module: {
        code: 1147,
        category: ts.DiagnosticCategory.Error,
        key: "Import_declarations_in_a_namespace_cannot_reference_a_module_1147",
        message: "Import declarations in a namespace cannot reference a module."
      },
      Cannot_compile_modules_unless_the_module_flag_is_provided_with_a_valid_module_type_Consider_setting_the_module_compiler_option_in_a_tsconfig_json_file: {
        code: 1148,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_compile_modules_unless_the_module_flag_is_provided_with_a_valid_module_type_Consider_setting__1148",
        message: "Cannot compile modules unless the '--module' flag is provided with a valid module type. Consider setting the 'module' compiler option in a 'tsconfig.json' file."
      },
      File_name_0_differs_from_already_included_file_name_1_only_in_casing: {
        code: 1149,
        category: ts.DiagnosticCategory.Error,
        key: "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149",
        message: "File name '{0}' differs from already included file name '{1}' only in casing"
      },
      new_T_cannot_be_used_to_create_an_array_Use_new_Array_T_instead: {
        code: 1150,
        category: ts.DiagnosticCategory.Error,
        key: "new_T_cannot_be_used_to_create_an_array_Use_new_Array_T_instead_1150",
        message: "'new T[]' cannot be used to create an array. Use 'new Array<T>()' instead."
      },
      const_declarations_must_be_initialized: {
        code: 1155,
        category: ts.DiagnosticCategory.Error,
        key: "const_declarations_must_be_initialized_1155",
        message: "'const' declarations must be initialized"
      },
      const_declarations_can_only_be_declared_inside_a_block: {
        code: 1156,
        category: ts.DiagnosticCategory.Error,
        key: "const_declarations_can_only_be_declared_inside_a_block_1156",
        message: "'const' declarations can only be declared inside a block."
      },
      let_declarations_can_only_be_declared_inside_a_block: {
        code: 1157,
        category: ts.DiagnosticCategory.Error,
        key: "let_declarations_can_only_be_declared_inside_a_block_1157",
        message: "'let' declarations can only be declared inside a block."
      },
      Unterminated_template_literal: {
        code: 1160,
        category: ts.DiagnosticCategory.Error,
        key: "Unterminated_template_literal_1160",
        message: "Unterminated template literal."
      },
      Unterminated_regular_expression_literal: {
        code: 1161,
        category: ts.DiagnosticCategory.Error,
        key: "Unterminated_regular_expression_literal_1161",
        message: "Unterminated regular expression literal."
      },
      An_object_member_cannot_be_declared_optional: {
        code: 1162,
        category: ts.DiagnosticCategory.Error,
        key: "An_object_member_cannot_be_declared_optional_1162",
        message: "An object member cannot be declared optional."
      },
      A_yield_expression_is_only_allowed_in_a_generator_body: {
        code: 1163,
        category: ts.DiagnosticCategory.Error,
        key: "A_yield_expression_is_only_allowed_in_a_generator_body_1163",
        message: "A 'yield' expression is only allowed in a generator body."
      },
      Computed_property_names_are_not_allowed_in_enums: {
        code: 1164,
        category: ts.DiagnosticCategory.Error,
        key: "Computed_property_names_are_not_allowed_in_enums_1164",
        message: "Computed property names are not allowed in enums."
      },
      A_computed_property_name_in_an_ambient_context_must_directly_refer_to_a_built_in_symbol: {
        code: 1165,
        category: ts.DiagnosticCategory.Error,
        key: "A_computed_property_name_in_an_ambient_context_must_directly_refer_to_a_built_in_symbol_1165",
        message: "A computed property name in an ambient context must directly refer to a built-in symbol."
      },
      A_computed_property_name_in_a_class_property_declaration_must_directly_refer_to_a_built_in_symbol: {
        code: 1166,
        category: ts.DiagnosticCategory.Error,
        key: "A_computed_property_name_in_a_class_property_declaration_must_directly_refer_to_a_built_in_symbol_1166",
        message: "A computed property name in a class property declaration must directly refer to a built-in symbol."
      },
      A_computed_property_name_in_a_method_overload_must_directly_refer_to_a_built_in_symbol: {
        code: 1168,
        category: ts.DiagnosticCategory.Error,
        key: "A_computed_property_name_in_a_method_overload_must_directly_refer_to_a_built_in_symbol_1168",
        message: "A computed property name in a method overload must directly refer to a built-in symbol."
      },
      A_computed_property_name_in_an_interface_must_directly_refer_to_a_built_in_symbol: {
        code: 1169,
        category: ts.DiagnosticCategory.Error,
        key: "A_computed_property_name_in_an_interface_must_directly_refer_to_a_built_in_symbol_1169",
        message: "A computed property name in an interface must directly refer to a built-in symbol."
      },
      A_computed_property_name_in_a_type_literal_must_directly_refer_to_a_built_in_symbol: {
        code: 1170,
        category: ts.DiagnosticCategory.Error,
        key: "A_computed_property_name_in_a_type_literal_must_directly_refer_to_a_built_in_symbol_1170",
        message: "A computed property name in a type literal must directly refer to a built-in symbol."
      },
      A_comma_expression_is_not_allowed_in_a_computed_property_name: {
        code: 1171,
        category: ts.DiagnosticCategory.Error,
        key: "A_comma_expression_is_not_allowed_in_a_computed_property_name_1171",
        message: "A comma expression is not allowed in a computed property name."
      },
      extends_clause_already_seen: {
        code: 1172,
        category: ts.DiagnosticCategory.Error,
        key: "extends_clause_already_seen_1172",
        message: "'extends' clause already seen."
      },
      extends_clause_must_precede_implements_clause: {
        code: 1173,
        category: ts.DiagnosticCategory.Error,
        key: "extends_clause_must_precede_implements_clause_1173",
        message: "'extends' clause must precede 'implements' clause."
      },
      Classes_can_only_extend_a_single_class: {
        code: 1174,
        category: ts.DiagnosticCategory.Error,
        key: "Classes_can_only_extend_a_single_class_1174",
        message: "Classes can only extend a single class."
      },
      implements_clause_already_seen: {
        code: 1175,
        category: ts.DiagnosticCategory.Error,
        key: "implements_clause_already_seen_1175",
        message: "'implements' clause already seen."
      },
      Interface_declaration_cannot_have_implements_clause: {
        code: 1176,
        category: ts.DiagnosticCategory.Error,
        key: "Interface_declaration_cannot_have_implements_clause_1176",
        message: "Interface declaration cannot have 'implements' clause."
      },
      Binary_digit_expected: {
        code: 1177,
        category: ts.DiagnosticCategory.Error,
        key: "Binary_digit_expected_1177",
        message: "Binary digit expected."
      },
      Octal_digit_expected: {
        code: 1178,
        category: ts.DiagnosticCategory.Error,
        key: "Octal_digit_expected_1178",
        message: "Octal digit expected."
      },
      Unexpected_token_expected: {
        code: 1179,
        category: ts.DiagnosticCategory.Error,
        key: "Unexpected_token_expected_1179",
        message: "Unexpected token. '{' expected."
      },
      Property_destructuring_pattern_expected: {
        code: 1180,
        category: ts.DiagnosticCategory.Error,
        key: "Property_destructuring_pattern_expected_1180",
        message: "Property destructuring pattern expected."
      },
      Array_element_destructuring_pattern_expected: {
        code: 1181,
        category: ts.DiagnosticCategory.Error,
        key: "Array_element_destructuring_pattern_expected_1181",
        message: "Array element destructuring pattern expected."
      },
      A_destructuring_declaration_must_have_an_initializer: {
        code: 1182,
        category: ts.DiagnosticCategory.Error,
        key: "A_destructuring_declaration_must_have_an_initializer_1182",
        message: "A destructuring declaration must have an initializer."
      },
      An_implementation_cannot_be_declared_in_ambient_contexts: {
        code: 1183,
        category: ts.DiagnosticCategory.Error,
        key: "An_implementation_cannot_be_declared_in_ambient_contexts_1183",
        message: "An implementation cannot be declared in ambient contexts."
      },
      Modifiers_cannot_appear_here: {
        code: 1184,
        category: ts.DiagnosticCategory.Error,
        key: "Modifiers_cannot_appear_here_1184",
        message: "Modifiers cannot appear here."
      },
      Merge_conflict_marker_encountered: {
        code: 1185,
        category: ts.DiagnosticCategory.Error,
        key: "Merge_conflict_marker_encountered_1185",
        message: "Merge conflict marker encountered."
      },
      A_rest_element_cannot_have_an_initializer: {
        code: 1186,
        category: ts.DiagnosticCategory.Error,
        key: "A_rest_element_cannot_have_an_initializer_1186",
        message: "A rest element cannot have an initializer."
      },
      A_parameter_property_may_not_be_a_binding_pattern: {
        code: 1187,
        category: ts.DiagnosticCategory.Error,
        key: "A_parameter_property_may_not_be_a_binding_pattern_1187",
        message: "A parameter property may not be a binding pattern."
      },
      Only_a_single_variable_declaration_is_allowed_in_a_for_of_statement: {
        code: 1188,
        category: ts.DiagnosticCategory.Error,
        key: "Only_a_single_variable_declaration_is_allowed_in_a_for_of_statement_1188",
        message: "Only a single variable declaration is allowed in a 'for...of' statement."
      },
      The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer: {
        code: 1189,
        category: ts.DiagnosticCategory.Error,
        key: "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189",
        message: "The variable declaration of a 'for...in' statement cannot have an initializer."
      },
      The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer: {
        code: 1190,
        category: ts.DiagnosticCategory.Error,
        key: "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190",
        message: "The variable declaration of a 'for...of' statement cannot have an initializer."
      },
      An_import_declaration_cannot_have_modifiers: {
        code: 1191,
        category: ts.DiagnosticCategory.Error,
        key: "An_import_declaration_cannot_have_modifiers_1191",
        message: "An import declaration cannot have modifiers."
      },
      Module_0_has_no_default_export: {
        code: 1192,
        category: ts.DiagnosticCategory.Error,
        key: "Module_0_has_no_default_export_1192",
        message: "Module '{0}' has no default export."
      },
      An_export_declaration_cannot_have_modifiers: {
        code: 1193,
        category: ts.DiagnosticCategory.Error,
        key: "An_export_declaration_cannot_have_modifiers_1193",
        message: "An export declaration cannot have modifiers."
      },
      Export_declarations_are_not_permitted_in_a_namespace: {
        code: 1194,
        category: ts.DiagnosticCategory.Error,
        key: "Export_declarations_are_not_permitted_in_a_namespace_1194",
        message: "Export declarations are not permitted in a namespace."
      },
      Catch_clause_variable_name_must_be_an_identifier: {
        code: 1195,
        category: ts.DiagnosticCategory.Error,
        key: "Catch_clause_variable_name_must_be_an_identifier_1195",
        message: "Catch clause variable name must be an identifier."
      },
      Catch_clause_variable_cannot_have_a_type_annotation: {
        code: 1196,
        category: ts.DiagnosticCategory.Error,
        key: "Catch_clause_variable_cannot_have_a_type_annotation_1196",
        message: "Catch clause variable cannot have a type annotation."
      },
      Catch_clause_variable_cannot_have_an_initializer: {
        code: 1197,
        category: ts.DiagnosticCategory.Error,
        key: "Catch_clause_variable_cannot_have_an_initializer_1197",
        message: "Catch clause variable cannot have an initializer."
      },
      An_extended_Unicode_escape_value_must_be_between_0x0_and_0x10FFFF_inclusive: {
        code: 1198,
        category: ts.DiagnosticCategory.Error,
        key: "An_extended_Unicode_escape_value_must_be_between_0x0_and_0x10FFFF_inclusive_1198",
        message: "An extended Unicode escape value must be between 0x0 and 0x10FFFF inclusive."
      },
      Unterminated_Unicode_escape_sequence: {
        code: 1199,
        category: ts.DiagnosticCategory.Error,
        key: "Unterminated_Unicode_escape_sequence_1199",
        message: "Unterminated Unicode escape sequence."
      },
      Line_terminator_not_permitted_before_arrow: {
        code: 1200,
        category: ts.DiagnosticCategory.Error,
        key: "Line_terminator_not_permitted_before_arrow_1200",
        message: "Line terminator not permitted before arrow."
      },
      Import_assignment_cannot_be_used_when_targeting_ECMAScript_6_modules_Consider_using_import_Asterisk_as_ns_from_mod_import_a_from_mod_import_d_from_mod_or_another_module_format_instead: {
        code: 1202,
        category: ts.DiagnosticCategory.Error,
        key: "Import_assignment_cannot_be_used_when_targeting_ECMAScript_6_modules_Consider_using_import_Asterisk__1202",
        message: "Import assignment cannot be used when targeting ECMAScript 6 modules. Consider using 'import * as ns from \"mod\"', 'import {a} from \"mod\"', 'import d from \"mod\"', or another module format instead."
      },
      Export_assignment_cannot_be_used_when_targeting_ECMAScript_6_modules_Consider_using_export_default_or_another_module_format_instead: {
        code: 1203,
        category: ts.DiagnosticCategory.Error,
        key: "Export_assignment_cannot_be_used_when_targeting_ECMAScript_6_modules_Consider_using_export_default_o_1203",
        message: "Export assignment cannot be used when targeting ECMAScript 6 modules. Consider using 'export default' or another module format instead."
      },
      Cannot_compile_modules_into_es2015_when_targeting_ES5_or_lower: {
        code: 1204,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_compile_modules_into_es2015_when_targeting_ES5_or_lower_1204",
        message: "Cannot compile modules into 'es2015' when targeting 'ES5' or lower."
      },
      Decorators_are_not_valid_here: {
        code: 1206,
        category: ts.DiagnosticCategory.Error,
        key: "Decorators_are_not_valid_here_1206",
        message: "Decorators are not valid here."
      },
      Decorators_cannot_be_applied_to_multiple_get_Slashset_accessors_of_the_same_name: {
        code: 1207,
        category: ts.DiagnosticCategory.Error,
        key: "Decorators_cannot_be_applied_to_multiple_get_Slashset_accessors_of_the_same_name_1207",
        message: "Decorators cannot be applied to multiple get/set accessors of the same name."
      },
      Cannot_compile_namespaces_when_the_isolatedModules_flag_is_provided: {
        code: 1208,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_compile_namespaces_when_the_isolatedModules_flag_is_provided_1208",
        message: "Cannot compile namespaces when the '--isolatedModules' flag is provided."
      },
      Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided: {
        code: 1209,
        category: ts.DiagnosticCategory.Error,
        key: "Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided_1209",
        message: "Ambient const enums are not allowed when the '--isolatedModules' flag is provided."
      },
      Invalid_use_of_0_Class_definitions_are_automatically_in_strict_mode: {
        code: 1210,
        category: ts.DiagnosticCategory.Error,
        key: "Invalid_use_of_0_Class_definitions_are_automatically_in_strict_mode_1210",
        message: "Invalid use of '{0}'. Class definitions are automatically in strict mode."
      },
      A_class_declaration_without_the_default_modifier_must_have_a_name: {
        code: 1211,
        category: ts.DiagnosticCategory.Error,
        key: "A_class_declaration_without_the_default_modifier_must_have_a_name_1211",
        message: "A class declaration without the 'default' modifier must have a name"
      },
      Identifier_expected_0_is_a_reserved_word_in_strict_mode: {
        code: 1212,
        category: ts.DiagnosticCategory.Error,
        key: "Identifier_expected_0_is_a_reserved_word_in_strict_mode_1212",
        message: "Identifier expected. '{0}' is a reserved word in strict mode"
      },
      Identifier_expected_0_is_a_reserved_word_in_strict_mode_Class_definitions_are_automatically_in_strict_mode: {
        code: 1213,
        category: ts.DiagnosticCategory.Error,
        key: "Identifier_expected_0_is_a_reserved_word_in_strict_mode_Class_definitions_are_automatically_in_stric_1213",
        message: "Identifier expected. '{0}' is a reserved word in strict mode. Class definitions are automatically in strict mode."
      },
      Identifier_expected_0_is_a_reserved_word_in_strict_mode_Modules_are_automatically_in_strict_mode: {
        code: 1214,
        category: ts.DiagnosticCategory.Error,
        key: "Identifier_expected_0_is_a_reserved_word_in_strict_mode_Modules_are_automatically_in_strict_mode_1214",
        message: "Identifier expected. '{0}' is a reserved word in strict mode. Modules are automatically in strict mode."
      },
      Invalid_use_of_0_Modules_are_automatically_in_strict_mode: {
        code: 1215,
        category: ts.DiagnosticCategory.Error,
        key: "Invalid_use_of_0_Modules_are_automatically_in_strict_mode_1215",
        message: "Invalid use of '{0}'. Modules are automatically in strict mode."
      },
      Export_assignment_is_not_supported_when_module_flag_is_system: {
        code: 1218,
        category: ts.DiagnosticCategory.Error,
        key: "Export_assignment_is_not_supported_when_module_flag_is_system_1218",
        message: "Export assignment is not supported when '--module' flag is 'system'."
      },
      Experimental_support_for_decorators_is_a_feature_that_is_subject_to_change_in_a_future_release_Set_the_experimentalDecorators_option_to_remove_this_warning: {
        code: 1219,
        category: ts.DiagnosticCategory.Error,
        key: "Experimental_support_for_decorators_is_a_feature_that_is_subject_to_change_in_a_future_release_Set_t_1219",
        message: "Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option to remove this warning."
      },
      Generators_are_only_available_when_targeting_ECMAScript_6_or_higher: {
        code: 1220,
        category: ts.DiagnosticCategory.Error,
        key: "Generators_are_only_available_when_targeting_ECMAScript_6_or_higher_1220",
        message: "Generators are only available when targeting ECMAScript 6 or higher."
      },
      Generators_are_not_allowed_in_an_ambient_context: {
        code: 1221,
        category: ts.DiagnosticCategory.Error,
        key: "Generators_are_not_allowed_in_an_ambient_context_1221",
        message: "Generators are not allowed in an ambient context."
      },
      An_overload_signature_cannot_be_declared_as_a_generator: {
        code: 1222,
        category: ts.DiagnosticCategory.Error,
        key: "An_overload_signature_cannot_be_declared_as_a_generator_1222",
        message: "An overload signature cannot be declared as a generator."
      },
      _0_tag_already_specified: {
        code: 1223,
        category: ts.DiagnosticCategory.Error,
        key: "_0_tag_already_specified_1223",
        message: "'{0}' tag already specified."
      },
      Signature_0_must_have_a_type_predicate: {
        code: 1224,
        category: ts.DiagnosticCategory.Error,
        key: "Signature_0_must_have_a_type_predicate_1224",
        message: "Signature '{0}' must have a type predicate."
      },
      Cannot_find_parameter_0: {
        code: 1225,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_find_parameter_0_1225",
        message: "Cannot find parameter '{0}'."
      },
      Type_predicate_0_is_not_assignable_to_1: {
        code: 1226,
        category: ts.DiagnosticCategory.Error,
        key: "Type_predicate_0_is_not_assignable_to_1_1226",
        message: "Type predicate '{0}' is not assignable to '{1}'."
      },
      Parameter_0_is_not_in_the_same_position_as_parameter_1: {
        code: 1227,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_is_not_in_the_same_position_as_parameter_1_1227",
        message: "Parameter '{0}' is not in the same position as parameter '{1}'."
      },
      A_type_predicate_is_only_allowed_in_return_type_position_for_functions_and_methods: {
        code: 1228,
        category: ts.DiagnosticCategory.Error,
        key: "A_type_predicate_is_only_allowed_in_return_type_position_for_functions_and_methods_1228",
        message: "A type predicate is only allowed in return type position for functions and methods."
      },
      A_type_predicate_cannot_reference_a_rest_parameter: {
        code: 1229,
        category: ts.DiagnosticCategory.Error,
        key: "A_type_predicate_cannot_reference_a_rest_parameter_1229",
        message: "A type predicate cannot reference a rest parameter."
      },
      A_type_predicate_cannot_reference_element_0_in_a_binding_pattern: {
        code: 1230,
        category: ts.DiagnosticCategory.Error,
        key: "A_type_predicate_cannot_reference_element_0_in_a_binding_pattern_1230",
        message: "A type predicate cannot reference element '{0}' in a binding pattern."
      },
      An_export_assignment_can_only_be_used_in_a_module: {
        code: 1231,
        category: ts.DiagnosticCategory.Error,
        key: "An_export_assignment_can_only_be_used_in_a_module_1231",
        message: "An export assignment can only be used in a module."
      },
      An_import_declaration_can_only_be_used_in_a_namespace_or_module: {
        code: 1232,
        category: ts.DiagnosticCategory.Error,
        key: "An_import_declaration_can_only_be_used_in_a_namespace_or_module_1232",
        message: "An import declaration can only be used in a namespace or module."
      },
      An_export_declaration_can_only_be_used_in_a_module: {
        code: 1233,
        category: ts.DiagnosticCategory.Error,
        key: "An_export_declaration_can_only_be_used_in_a_module_1233",
        message: "An export declaration can only be used in a module."
      },
      An_ambient_module_declaration_is_only_allowed_at_the_top_level_in_a_file: {
        code: 1234,
        category: ts.DiagnosticCategory.Error,
        key: "An_ambient_module_declaration_is_only_allowed_at_the_top_level_in_a_file_1234",
        message: "An ambient module declaration is only allowed at the top level in a file."
      },
      A_namespace_declaration_is_only_allowed_in_a_namespace_or_module: {
        code: 1235,
        category: ts.DiagnosticCategory.Error,
        key: "A_namespace_declaration_is_only_allowed_in_a_namespace_or_module_1235",
        message: "A namespace declaration is only allowed in a namespace or module."
      },
      The_return_type_of_a_property_decorator_function_must_be_either_void_or_any: {
        code: 1236,
        category: ts.DiagnosticCategory.Error,
        key: "The_return_type_of_a_property_decorator_function_must_be_either_void_or_any_1236",
        message: "The return type of a property decorator function must be either 'void' or 'any'."
      },
      The_return_type_of_a_parameter_decorator_function_must_be_either_void_or_any: {
        code: 1237,
        category: ts.DiagnosticCategory.Error,
        key: "The_return_type_of_a_parameter_decorator_function_must_be_either_void_or_any_1237",
        message: "The return type of a parameter decorator function must be either 'void' or 'any'."
      },
      Unable_to_resolve_signature_of_class_decorator_when_called_as_an_expression: {
        code: 1238,
        category: ts.DiagnosticCategory.Error,
        key: "Unable_to_resolve_signature_of_class_decorator_when_called_as_an_expression_1238",
        message: "Unable to resolve signature of class decorator when called as an expression."
      },
      Unable_to_resolve_signature_of_parameter_decorator_when_called_as_an_expression: {
        code: 1239,
        category: ts.DiagnosticCategory.Error,
        key: "Unable_to_resolve_signature_of_parameter_decorator_when_called_as_an_expression_1239",
        message: "Unable to resolve signature of parameter decorator when called as an expression."
      },
      Unable_to_resolve_signature_of_property_decorator_when_called_as_an_expression: {
        code: 1240,
        category: ts.DiagnosticCategory.Error,
        key: "Unable_to_resolve_signature_of_property_decorator_when_called_as_an_expression_1240",
        message: "Unable to resolve signature of property decorator when called as an expression."
      },
      Unable_to_resolve_signature_of_method_decorator_when_called_as_an_expression: {
        code: 1241,
        category: ts.DiagnosticCategory.Error,
        key: "Unable_to_resolve_signature_of_method_decorator_when_called_as_an_expression_1241",
        message: "Unable to resolve signature of method decorator when called as an expression."
      },
      abstract_modifier_can_only_appear_on_a_class_or_method_declaration: {
        code: 1242,
        category: ts.DiagnosticCategory.Error,
        key: "abstract_modifier_can_only_appear_on_a_class_or_method_declaration_1242",
        message: "'abstract' modifier can only appear on a class or method declaration."
      },
      _0_modifier_cannot_be_used_with_1_modifier: {
        code: 1243,
        category: ts.DiagnosticCategory.Error,
        key: "_0_modifier_cannot_be_used_with_1_modifier_1243",
        message: "'{0}' modifier cannot be used with '{1}' modifier."
      },
      Abstract_methods_can_only_appear_within_an_abstract_class: {
        code: 1244,
        category: ts.DiagnosticCategory.Error,
        key: "Abstract_methods_can_only_appear_within_an_abstract_class_1244",
        message: "Abstract methods can only appear within an abstract class."
      },
      Method_0_cannot_have_an_implementation_because_it_is_marked_abstract: {
        code: 1245,
        category: ts.DiagnosticCategory.Error,
        key: "Method_0_cannot_have_an_implementation_because_it_is_marked_abstract_1245",
        message: "Method '{0}' cannot have an implementation because it is marked abstract."
      },
      An_interface_property_cannot_have_an_initializer: {
        code: 1246,
        category: ts.DiagnosticCategory.Error,
        key: "An_interface_property_cannot_have_an_initializer_1246",
        message: "An interface property cannot have an initializer."
      },
      A_type_literal_property_cannot_have_an_initializer: {
        code: 1247,
        category: ts.DiagnosticCategory.Error,
        key: "A_type_literal_property_cannot_have_an_initializer_1247",
        message: "A type literal property cannot have an initializer."
      },
      A_class_member_cannot_have_the_0_keyword: {
        code: 1248,
        category: ts.DiagnosticCategory.Error,
        key: "A_class_member_cannot_have_the_0_keyword_1248",
        message: "A class member cannot have the '{0}' keyword."
      },
      A_decorator_can_only_decorate_a_method_implementation_not_an_overload: {
        code: 1249,
        category: ts.DiagnosticCategory.Error,
        key: "A_decorator_can_only_decorate_a_method_implementation_not_an_overload_1249",
        message: "A decorator can only decorate a method implementation, not an overload."
      },
      with_statements_are_not_allowed_in_an_async_function_block: {
        code: 1300,
        category: ts.DiagnosticCategory.Error,
        key: "with_statements_are_not_allowed_in_an_async_function_block_1300",
        message: "'with' statements are not allowed in an async function block."
      },
      await_expression_is_only_allowed_within_an_async_function: {
        code: 1308,
        category: ts.DiagnosticCategory.Error,
        key: "await_expression_is_only_allowed_within_an_async_function_1308",
        message: "'await' expression is only allowed within an async function."
      },
      Async_functions_are_only_available_when_targeting_ECMAScript_6_and_higher: {
        code: 1311,
        category: ts.DiagnosticCategory.Error,
        key: "Async_functions_are_only_available_when_targeting_ECMAScript_6_and_higher_1311",
        message: "Async functions are only available when targeting ECMAScript 6 and higher."
      },
      can_only_be_used_in_an_object_literal_property_inside_a_destructuring_assignment: {
        code: 1312,
        category: ts.DiagnosticCategory.Error,
        key: "can_only_be_used_in_an_object_literal_property_inside_a_destructuring_assignment_1312",
        message: "'=' can only be used in an object literal property inside a destructuring assignment."
      },
      The_body_of_an_if_statement_cannot_be_the_empty_statement: {
        code: 1313,
        category: ts.DiagnosticCategory.Error,
        key: "The_body_of_an_if_statement_cannot_be_the_empty_statement_1313",
        message: "The body of an 'if' statement cannot be the empty statement."
      },
      Duplicate_identifier_0: {
        code: 2300,
        category: ts.DiagnosticCategory.Error,
        key: "Duplicate_identifier_0_2300",
        message: "Duplicate identifier '{0}'."
      },
      Initializer_of_instance_member_variable_0_cannot_reference_identifier_1_declared_in_the_constructor: {
        code: 2301,
        category: ts.DiagnosticCategory.Error,
        key: "Initializer_of_instance_member_variable_0_cannot_reference_identifier_1_declared_in_the_constructor_2301",
        message: "Initializer of instance member variable '{0}' cannot reference identifier '{1}' declared in the constructor."
      },
      Static_members_cannot_reference_class_type_parameters: {
        code: 2302,
        category: ts.DiagnosticCategory.Error,
        key: "Static_members_cannot_reference_class_type_parameters_2302",
        message: "Static members cannot reference class type parameters."
      },
      Circular_definition_of_import_alias_0: {
        code: 2303,
        category: ts.DiagnosticCategory.Error,
        key: "Circular_definition_of_import_alias_0_2303",
        message: "Circular definition of import alias '{0}'."
      },
      Cannot_find_name_0: {
        code: 2304,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_find_name_0_2304",
        message: "Cannot find name '{0}'."
      },
      Module_0_has_no_exported_member_1: {
        code: 2305,
        category: ts.DiagnosticCategory.Error,
        key: "Module_0_has_no_exported_member_1_2305",
        message: "Module '{0}' has no exported member '{1}'."
      },
      File_0_is_not_a_module: {
        code: 2306,
        category: ts.DiagnosticCategory.Error,
        key: "File_0_is_not_a_module_2306",
        message: "File '{0}' is not a module."
      },
      Cannot_find_module_0: {
        code: 2307,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_find_module_0_2307",
        message: "Cannot find module '{0}'."
      },
      Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambiguity: {
        code: 2308,
        category: ts.DiagnosticCategory.Error,
        key: "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308",
        message: "Module {0} has already exported a member named '{1}'. Consider explicitly re-exporting to resolve the ambiguity."
      },
      An_export_assignment_cannot_be_used_in_a_module_with_other_exported_elements: {
        code: 2309,
        category: ts.DiagnosticCategory.Error,
        key: "An_export_assignment_cannot_be_used_in_a_module_with_other_exported_elements_2309",
        message: "An export assignment cannot be used in a module with other exported elements."
      },
      Type_0_recursively_references_itself_as_a_base_type: {
        code: 2310,
        category: ts.DiagnosticCategory.Error,
        key: "Type_0_recursively_references_itself_as_a_base_type_2310",
        message: "Type '{0}' recursively references itself as a base type."
      },
      A_class_may_only_extend_another_class: {
        code: 2311,
        category: ts.DiagnosticCategory.Error,
        key: "A_class_may_only_extend_another_class_2311",
        message: "A class may only extend another class."
      },
      An_interface_may_only_extend_a_class_or_another_interface: {
        code: 2312,
        category: ts.DiagnosticCategory.Error,
        key: "An_interface_may_only_extend_a_class_or_another_interface_2312",
        message: "An interface may only extend a class or another interface."
      },
      Type_parameter_0_has_a_circular_constraint: {
        code: 2313,
        category: ts.DiagnosticCategory.Error,
        key: "Type_parameter_0_has_a_circular_constraint_2313",
        message: "Type parameter '{0}' has a circular constraint."
      },
      Generic_type_0_requires_1_type_argument_s: {
        code: 2314,
        category: ts.DiagnosticCategory.Error,
        key: "Generic_type_0_requires_1_type_argument_s_2314",
        message: "Generic type '{0}' requires {1} type argument(s)."
      },
      Type_0_is_not_generic: {
        code: 2315,
        category: ts.DiagnosticCategory.Error,
        key: "Type_0_is_not_generic_2315",
        message: "Type '{0}' is not generic."
      },
      Global_type_0_must_be_a_class_or_interface_type: {
        code: 2316,
        category: ts.DiagnosticCategory.Error,
        key: "Global_type_0_must_be_a_class_or_interface_type_2316",
        message: "Global type '{0}' must be a class or interface type."
      },
      Global_type_0_must_have_1_type_parameter_s: {
        code: 2317,
        category: ts.DiagnosticCategory.Error,
        key: "Global_type_0_must_have_1_type_parameter_s_2317",
        message: "Global type '{0}' must have {1} type parameter(s)."
      },
      Cannot_find_global_type_0: {
        code: 2318,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_find_global_type_0_2318",
        message: "Cannot find global type '{0}'."
      },
      Named_property_0_of_types_1_and_2_are_not_identical: {
        code: 2319,
        category: ts.DiagnosticCategory.Error,
        key: "Named_property_0_of_types_1_and_2_are_not_identical_2319",
        message: "Named property '{0}' of types '{1}' and '{2}' are not identical."
      },
      Interface_0_cannot_simultaneously_extend_types_1_and_2: {
        code: 2320,
        category: ts.DiagnosticCategory.Error,
        key: "Interface_0_cannot_simultaneously_extend_types_1_and_2_2320",
        message: "Interface '{0}' cannot simultaneously extend types '{1}' and '{2}'."
      },
      Excessive_stack_depth_comparing_types_0_and_1: {
        code: 2321,
        category: ts.DiagnosticCategory.Error,
        key: "Excessive_stack_depth_comparing_types_0_and_1_2321",
        message: "Excessive stack depth comparing types '{0}' and '{1}'."
      },
      Type_0_is_not_assignable_to_type_1: {
        code: 2322,
        category: ts.DiagnosticCategory.Error,
        key: "Type_0_is_not_assignable_to_type_1_2322",
        message: "Type '{0}' is not assignable to type '{1}'."
      },
      Cannot_redeclare_exported_variable_0: {
        code: 2323,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_redeclare_exported_variable_0_2323",
        message: "Cannot redeclare exported variable '{0}'."
      },
      Property_0_is_missing_in_type_1: {
        code: 2324,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_is_missing_in_type_1_2324",
        message: "Property '{0}' is missing in type '{1}'."
      },
      Property_0_is_private_in_type_1_but_not_in_type_2: {
        code: 2325,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_is_private_in_type_1_but_not_in_type_2_2325",
        message: "Property '{0}' is private in type '{1}' but not in type '{2}'."
      },
      Types_of_property_0_are_incompatible: {
        code: 2326,
        category: ts.DiagnosticCategory.Error,
        key: "Types_of_property_0_are_incompatible_2326",
        message: "Types of property '{0}' are incompatible."
      },
      Property_0_is_optional_in_type_1_but_required_in_type_2: {
        code: 2327,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_is_optional_in_type_1_but_required_in_type_2_2327",
        message: "Property '{0}' is optional in type '{1}' but required in type '{2}'."
      },
      Types_of_parameters_0_and_1_are_incompatible: {
        code: 2328,
        category: ts.DiagnosticCategory.Error,
        key: "Types_of_parameters_0_and_1_are_incompatible_2328",
        message: "Types of parameters '{0}' and '{1}' are incompatible."
      },
      Index_signature_is_missing_in_type_0: {
        code: 2329,
        category: ts.DiagnosticCategory.Error,
        key: "Index_signature_is_missing_in_type_0_2329",
        message: "Index signature is missing in type '{0}'."
      },
      Index_signatures_are_incompatible: {
        code: 2330,
        category: ts.DiagnosticCategory.Error,
        key: "Index_signatures_are_incompatible_2330",
        message: "Index signatures are incompatible."
      },
      this_cannot_be_referenced_in_a_module_or_namespace_body: {
        code: 2331,
        category: ts.DiagnosticCategory.Error,
        key: "this_cannot_be_referenced_in_a_module_or_namespace_body_2331",
        message: "'this' cannot be referenced in a module or namespace body."
      },
      this_cannot_be_referenced_in_current_location: {
        code: 2332,
        category: ts.DiagnosticCategory.Error,
        key: "this_cannot_be_referenced_in_current_location_2332",
        message: "'this' cannot be referenced in current location."
      },
      this_cannot_be_referenced_in_constructor_arguments: {
        code: 2333,
        category: ts.DiagnosticCategory.Error,
        key: "this_cannot_be_referenced_in_constructor_arguments_2333",
        message: "'this' cannot be referenced in constructor arguments."
      },
      this_cannot_be_referenced_in_a_static_property_initializer: {
        code: 2334,
        category: ts.DiagnosticCategory.Error,
        key: "this_cannot_be_referenced_in_a_static_property_initializer_2334",
        message: "'this' cannot be referenced in a static property initializer."
      },
      super_can_only_be_referenced_in_a_derived_class: {
        code: 2335,
        category: ts.DiagnosticCategory.Error,
        key: "super_can_only_be_referenced_in_a_derived_class_2335",
        message: "'super' can only be referenced in a derived class."
      },
      super_cannot_be_referenced_in_constructor_arguments: {
        code: 2336,
        category: ts.DiagnosticCategory.Error,
        key: "super_cannot_be_referenced_in_constructor_arguments_2336",
        message: "'super' cannot be referenced in constructor arguments."
      },
      Super_calls_are_not_permitted_outside_constructors_or_in_nested_functions_inside_constructors: {
        code: 2337,
        category: ts.DiagnosticCategory.Error,
        key: "Super_calls_are_not_permitted_outside_constructors_or_in_nested_functions_inside_constructors_2337",
        message: "Super calls are not permitted outside constructors or in nested functions inside constructors."
      },
      super_property_access_is_permitted_only_in_a_constructor_member_function_or_member_accessor_of_a_derived_class: {
        code: 2338,
        category: ts.DiagnosticCategory.Error,
        key: "super_property_access_is_permitted_only_in_a_constructor_member_function_or_member_accessor_of_a_der_2338",
        message: "'super' property access is permitted only in a constructor, member function, or member accessor of a derived class."
      },
      Property_0_does_not_exist_on_type_1: {
        code: 2339,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_does_not_exist_on_type_1_2339",
        message: "Property '{0}' does not exist on type '{1}'."
      },
      Only_public_and_protected_methods_of_the_base_class_are_accessible_via_the_super_keyword: {
        code: 2340,
        category: ts.DiagnosticCategory.Error,
        key: "Only_public_and_protected_methods_of_the_base_class_are_accessible_via_the_super_keyword_2340",
        message: "Only public and protected methods of the base class are accessible via the 'super' keyword."
      },
      Property_0_is_private_and_only_accessible_within_class_1: {
        code: 2341,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_is_private_and_only_accessible_within_class_1_2341",
        message: "Property '{0}' is private and only accessible within class '{1}'."
      },
      An_index_expression_argument_must_be_of_type_string_number_symbol_or_any: {
        code: 2342,
        category: ts.DiagnosticCategory.Error,
        key: "An_index_expression_argument_must_be_of_type_string_number_symbol_or_any_2342",
        message: "An index expression argument must be of type 'string', 'number', 'symbol', or 'any'."
      },
      Type_0_does_not_satisfy_the_constraint_1: {
        code: 2344,
        category: ts.DiagnosticCategory.Error,
        key: "Type_0_does_not_satisfy_the_constraint_1_2344",
        message: "Type '{0}' does not satisfy the constraint '{1}'."
      },
      Argument_of_type_0_is_not_assignable_to_parameter_of_type_1: {
        code: 2345,
        category: ts.DiagnosticCategory.Error,
        key: "Argument_of_type_0_is_not_assignable_to_parameter_of_type_1_2345",
        message: "Argument of type '{0}' is not assignable to parameter of type '{1}'."
      },
      Supplied_parameters_do_not_match_any_signature_of_call_target: {
        code: 2346,
        category: ts.DiagnosticCategory.Error,
        key: "Supplied_parameters_do_not_match_any_signature_of_call_target_2346",
        message: "Supplied parameters do not match any signature of call target."
      },
      Untyped_function_calls_may_not_accept_type_arguments: {
        code: 2347,
        category: ts.DiagnosticCategory.Error,
        key: "Untyped_function_calls_may_not_accept_type_arguments_2347",
        message: "Untyped function calls may not accept type arguments."
      },
      Value_of_type_0_is_not_callable_Did_you_mean_to_include_new: {
        code: 2348,
        category: ts.DiagnosticCategory.Error,
        key: "Value_of_type_0_is_not_callable_Did_you_mean_to_include_new_2348",
        message: "Value of type '{0}' is not callable. Did you mean to include 'new'?"
      },
      Cannot_invoke_an_expression_whose_type_lacks_a_call_signature: {
        code: 2349,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_invoke_an_expression_whose_type_lacks_a_call_signature_2349",
        message: "Cannot invoke an expression whose type lacks a call signature."
      },
      Only_a_void_function_can_be_called_with_the_new_keyword: {
        code: 2350,
        category: ts.DiagnosticCategory.Error,
        key: "Only_a_void_function_can_be_called_with_the_new_keyword_2350",
        message: "Only a void function can be called with the 'new' keyword."
      },
      Cannot_use_new_with_an_expression_whose_type_lacks_a_call_or_construct_signature: {
        code: 2351,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_use_new_with_an_expression_whose_type_lacks_a_call_or_construct_signature_2351",
        message: "Cannot use 'new' with an expression whose type lacks a call or construct signature."
      },
      Neither_type_0_nor_type_1_is_assignable_to_the_other: {
        code: 2352,
        category: ts.DiagnosticCategory.Error,
        key: "Neither_type_0_nor_type_1_is_assignable_to_the_other_2352",
        message: "Neither type '{0}' nor type '{1}' is assignable to the other."
      },
      Object_literal_may_only_specify_known_properties_and_0_does_not_exist_in_type_1: {
        code: 2353,
        category: ts.DiagnosticCategory.Error,
        key: "Object_literal_may_only_specify_known_properties_and_0_does_not_exist_in_type_1_2353",
        message: "Object literal may only specify known properties, and '{0}' does not exist in type '{1}'."
      },
      No_best_common_type_exists_among_return_expressions: {
        code: 2354,
        category: ts.DiagnosticCategory.Error,
        key: "No_best_common_type_exists_among_return_expressions_2354",
        message: "No best common type exists among return expressions."
      },
      A_function_whose_declared_type_is_neither_void_nor_any_must_return_a_value: {
        code: 2355,
        category: ts.DiagnosticCategory.Error,
        key: "A_function_whose_declared_type_is_neither_void_nor_any_must_return_a_value_2355",
        message: "A function whose declared type is neither 'void' nor 'any' must return a value."
      },
      An_arithmetic_operand_must_be_of_type_any_number_or_an_enum_type: {
        code: 2356,
        category: ts.DiagnosticCategory.Error,
        key: "An_arithmetic_operand_must_be_of_type_any_number_or_an_enum_type_2356",
        message: "An arithmetic operand must be of type 'any', 'number' or an enum type."
      },
      The_operand_of_an_increment_or_decrement_operator_must_be_a_variable_property_or_indexer: {
        code: 2357,
        category: ts.DiagnosticCategory.Error,
        key: "The_operand_of_an_increment_or_decrement_operator_must_be_a_variable_property_or_indexer_2357",
        message: "The operand of an increment or decrement operator must be a variable, property or indexer."
      },
      The_left_hand_side_of_an_instanceof_expression_must_be_of_type_any_an_object_type_or_a_type_parameter: {
        code: 2358,
        category: ts.DiagnosticCategory.Error,
        key: "The_left_hand_side_of_an_instanceof_expression_must_be_of_type_any_an_object_type_or_a_type_paramete_2358",
        message: "The left-hand side of an 'instanceof' expression must be of type 'any', an object type or a type parameter."
      },
      The_right_hand_side_of_an_instanceof_expression_must_be_of_type_any_or_of_a_type_assignable_to_the_Function_interface_type: {
        code: 2359,
        category: ts.DiagnosticCategory.Error,
        key: "The_right_hand_side_of_an_instanceof_expression_must_be_of_type_any_or_of_a_type_assignable_to_the_F_2359",
        message: "The right-hand side of an 'instanceof' expression must be of type 'any' or of a type assignable to the 'Function' interface type."
      },
      The_left_hand_side_of_an_in_expression_must_be_of_type_any_string_number_or_symbol: {
        code: 2360,
        category: ts.DiagnosticCategory.Error,
        key: "The_left_hand_side_of_an_in_expression_must_be_of_type_any_string_number_or_symbol_2360",
        message: "The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'."
      },
      The_right_hand_side_of_an_in_expression_must_be_of_type_any_an_object_type_or_a_type_parameter: {
        code: 2361,
        category: ts.DiagnosticCategory.Error,
        key: "The_right_hand_side_of_an_in_expression_must_be_of_type_any_an_object_type_or_a_type_parameter_2361",
        message: "The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter"
      },
      The_left_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_or_an_enum_type: {
        code: 2362,
        category: ts.DiagnosticCategory.Error,
        key: "The_left_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_or_an_enum_type_2362",
        message: "The left-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type."
      },
      The_right_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_or_an_enum_type: {
        code: 2363,
        category: ts.DiagnosticCategory.Error,
        key: "The_right_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_or_an_enum_type_2363",
        message: "The right-hand side of an arithmetic operation must be of type 'any', 'number' or an enum type."
      },
      Invalid_left_hand_side_of_assignment_expression: {
        code: 2364,
        category: ts.DiagnosticCategory.Error,
        key: "Invalid_left_hand_side_of_assignment_expression_2364",
        message: "Invalid left-hand side of assignment expression."
      },
      Operator_0_cannot_be_applied_to_types_1_and_2: {
        code: 2365,
        category: ts.DiagnosticCategory.Error,
        key: "Operator_0_cannot_be_applied_to_types_1_and_2_2365",
        message: "Operator '{0}' cannot be applied to types '{1}' and '{2}'."
      },
      Type_parameter_name_cannot_be_0: {
        code: 2368,
        category: ts.DiagnosticCategory.Error,
        key: "Type_parameter_name_cannot_be_0_2368",
        message: "Type parameter name cannot be '{0}'"
      },
      A_parameter_property_is_only_allowed_in_a_constructor_implementation: {
        code: 2369,
        category: ts.DiagnosticCategory.Error,
        key: "A_parameter_property_is_only_allowed_in_a_constructor_implementation_2369",
        message: "A parameter property is only allowed in a constructor implementation."
      },
      A_rest_parameter_must_be_of_an_array_type: {
        code: 2370,
        category: ts.DiagnosticCategory.Error,
        key: "A_rest_parameter_must_be_of_an_array_type_2370",
        message: "A rest parameter must be of an array type."
      },
      A_parameter_initializer_is_only_allowed_in_a_function_or_constructor_implementation: {
        code: 2371,
        category: ts.DiagnosticCategory.Error,
        key: "A_parameter_initializer_is_only_allowed_in_a_function_or_constructor_implementation_2371",
        message: "A parameter initializer is only allowed in a function or constructor implementation."
      },
      Parameter_0_cannot_be_referenced_in_its_initializer: {
        code: 2372,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_cannot_be_referenced_in_its_initializer_2372",
        message: "Parameter '{0}' cannot be referenced in its initializer."
      },
      Initializer_of_parameter_0_cannot_reference_identifier_1_declared_after_it: {
        code: 2373,
        category: ts.DiagnosticCategory.Error,
        key: "Initializer_of_parameter_0_cannot_reference_identifier_1_declared_after_it_2373",
        message: "Initializer of parameter '{0}' cannot reference identifier '{1}' declared after it."
      },
      Duplicate_string_index_signature: {
        code: 2374,
        category: ts.DiagnosticCategory.Error,
        key: "Duplicate_string_index_signature_2374",
        message: "Duplicate string index signature."
      },
      Duplicate_number_index_signature: {
        code: 2375,
        category: ts.DiagnosticCategory.Error,
        key: "Duplicate_number_index_signature_2375",
        message: "Duplicate number index signature."
      },
      A_super_call_must_be_the_first_statement_in_the_constructor_when_a_class_contains_initialized_properties_or_has_parameter_properties: {
        code: 2376,
        category: ts.DiagnosticCategory.Error,
        key: "A_super_call_must_be_the_first_statement_in_the_constructor_when_a_class_contains_initialized_proper_2376",
        message: "A 'super' call must be the first statement in the constructor when a class contains initialized properties or has parameter properties."
      },
      Constructors_for_derived_classes_must_contain_a_super_call: {
        code: 2377,
        category: ts.DiagnosticCategory.Error,
        key: "Constructors_for_derived_classes_must_contain_a_super_call_2377",
        message: "Constructors for derived classes must contain a 'super' call."
      },
      A_get_accessor_must_return_a_value: {
        code: 2378,
        category: ts.DiagnosticCategory.Error,
        key: "A_get_accessor_must_return_a_value_2378",
        message: "A 'get' accessor must return a value."
      },
      Getter_and_setter_accessors_do_not_agree_in_visibility: {
        code: 2379,
        category: ts.DiagnosticCategory.Error,
        key: "Getter_and_setter_accessors_do_not_agree_in_visibility_2379",
        message: "Getter and setter accessors do not agree in visibility."
      },
      get_and_set_accessor_must_have_the_same_type: {
        code: 2380,
        category: ts.DiagnosticCategory.Error,
        key: "get_and_set_accessor_must_have_the_same_type_2380",
        message: "'get' and 'set' accessor must have the same type."
      },
      A_signature_with_an_implementation_cannot_use_a_string_literal_type: {
        code: 2381,
        category: ts.DiagnosticCategory.Error,
        key: "A_signature_with_an_implementation_cannot_use_a_string_literal_type_2381",
        message: "A signature with an implementation cannot use a string literal type."
      },
      Specialized_overload_signature_is_not_assignable_to_any_non_specialized_signature: {
        code: 2382,
        category: ts.DiagnosticCategory.Error,
        key: "Specialized_overload_signature_is_not_assignable_to_any_non_specialized_signature_2382",
        message: "Specialized overload signature is not assignable to any non-specialized signature."
      },
      Overload_signatures_must_all_be_exported_or_not_exported: {
        code: 2383,
        category: ts.DiagnosticCategory.Error,
        key: "Overload_signatures_must_all_be_exported_or_not_exported_2383",
        message: "Overload signatures must all be exported or not exported."
      },
      Overload_signatures_must_all_be_ambient_or_non_ambient: {
        code: 2384,
        category: ts.DiagnosticCategory.Error,
        key: "Overload_signatures_must_all_be_ambient_or_non_ambient_2384",
        message: "Overload signatures must all be ambient or non-ambient."
      },
      Overload_signatures_must_all_be_public_private_or_protected: {
        code: 2385,
        category: ts.DiagnosticCategory.Error,
        key: "Overload_signatures_must_all_be_public_private_or_protected_2385",
        message: "Overload signatures must all be public, private or protected."
      },
      Overload_signatures_must_all_be_optional_or_required: {
        code: 2386,
        category: ts.DiagnosticCategory.Error,
        key: "Overload_signatures_must_all_be_optional_or_required_2386",
        message: "Overload signatures must all be optional or required."
      },
      Function_overload_must_be_static: {
        code: 2387,
        category: ts.DiagnosticCategory.Error,
        key: "Function_overload_must_be_static_2387",
        message: "Function overload must be static."
      },
      Function_overload_must_not_be_static: {
        code: 2388,
        category: ts.DiagnosticCategory.Error,
        key: "Function_overload_must_not_be_static_2388",
        message: "Function overload must not be static."
      },
      Function_implementation_name_must_be_0: {
        code: 2389,
        category: ts.DiagnosticCategory.Error,
        key: "Function_implementation_name_must_be_0_2389",
        message: "Function implementation name must be '{0}'."
      },
      Constructor_implementation_is_missing: {
        code: 2390,
        category: ts.DiagnosticCategory.Error,
        key: "Constructor_implementation_is_missing_2390",
        message: "Constructor implementation is missing."
      },
      Function_implementation_is_missing_or_not_immediately_following_the_declaration: {
        code: 2391,
        category: ts.DiagnosticCategory.Error,
        key: "Function_implementation_is_missing_or_not_immediately_following_the_declaration_2391",
        message: "Function implementation is missing or not immediately following the declaration."
      },
      Multiple_constructor_implementations_are_not_allowed: {
        code: 2392,
        category: ts.DiagnosticCategory.Error,
        key: "Multiple_constructor_implementations_are_not_allowed_2392",
        message: "Multiple constructor implementations are not allowed."
      },
      Duplicate_function_implementation: {
        code: 2393,
        category: ts.DiagnosticCategory.Error,
        key: "Duplicate_function_implementation_2393",
        message: "Duplicate function implementation."
      },
      Overload_signature_is_not_compatible_with_function_implementation: {
        code: 2394,
        category: ts.DiagnosticCategory.Error,
        key: "Overload_signature_is_not_compatible_with_function_implementation_2394",
        message: "Overload signature is not compatible with function implementation."
      },
      Individual_declarations_in_merged_declaration_0_must_be_all_exported_or_all_local: {
        code: 2395,
        category: ts.DiagnosticCategory.Error,
        key: "Individual_declarations_in_merged_declaration_0_must_be_all_exported_or_all_local_2395",
        message: "Individual declarations in merged declaration '{0}' must be all exported or all local."
      },
      Duplicate_identifier_arguments_Compiler_uses_arguments_to_initialize_rest_parameters: {
        code: 2396,
        category: ts.DiagnosticCategory.Error,
        key: "Duplicate_identifier_arguments_Compiler_uses_arguments_to_initialize_rest_parameters_2396",
        message: "Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters."
      },
      Declaration_name_conflicts_with_built_in_global_identifier_0: {
        code: 2397,
        category: ts.DiagnosticCategory.Error,
        key: "Declaration_name_conflicts_with_built_in_global_identifier_0_2397",
        message: "Declaration name conflicts with built-in global identifier '{0}'."
      },
      Duplicate_identifier_this_Compiler_uses_variable_declaration_this_to_capture_this_reference: {
        code: 2399,
        category: ts.DiagnosticCategory.Error,
        key: "Duplicate_identifier_this_Compiler_uses_variable_declaration_this_to_capture_this_reference_2399",
        message: "Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference."
      },
      Expression_resolves_to_variable_declaration_this_that_compiler_uses_to_capture_this_reference: {
        code: 2400,
        category: ts.DiagnosticCategory.Error,
        key: "Expression_resolves_to_variable_declaration_this_that_compiler_uses_to_capture_this_reference_2400",
        message: "Expression resolves to variable declaration '_this' that compiler uses to capture 'this' reference."
      },
      Duplicate_identifier_super_Compiler_uses_super_to_capture_base_class_reference: {
        code: 2401,
        category: ts.DiagnosticCategory.Error,
        key: "Duplicate_identifier_super_Compiler_uses_super_to_capture_base_class_reference_2401",
        message: "Duplicate identifier '_super'. Compiler uses '_super' to capture base class reference."
      },
      Expression_resolves_to_super_that_compiler_uses_to_capture_base_class_reference: {
        code: 2402,
        category: ts.DiagnosticCategory.Error,
        key: "Expression_resolves_to_super_that_compiler_uses_to_capture_base_class_reference_2402",
        message: "Expression resolves to '_super' that compiler uses to capture base class reference."
      },
      Subsequent_variable_declarations_must_have_the_same_type_Variable_0_must_be_of_type_1_but_here_has_type_2: {
        code: 2403,
        category: ts.DiagnosticCategory.Error,
        key: "Subsequent_variable_declarations_must_have_the_same_type_Variable_0_must_be_of_type_1_but_here_has_t_2403",
        message: "Subsequent variable declarations must have the same type.  Variable '{0}' must be of type '{1}', but here has type '{2}'."
      },
      The_left_hand_side_of_a_for_in_statement_cannot_use_a_type_annotation: {
        code: 2404,
        category: ts.DiagnosticCategory.Error,
        key: "The_left_hand_side_of_a_for_in_statement_cannot_use_a_type_annotation_2404",
        message: "The left-hand side of a 'for...in' statement cannot use a type annotation."
      },
      The_left_hand_side_of_a_for_in_statement_must_be_of_type_string_or_any: {
        code: 2405,
        category: ts.DiagnosticCategory.Error,
        key: "The_left_hand_side_of_a_for_in_statement_must_be_of_type_string_or_any_2405",
        message: "The left-hand side of a 'for...in' statement must be of type 'string' or 'any'."
      },
      Invalid_left_hand_side_in_for_in_statement: {
        code: 2406,
        category: ts.DiagnosticCategory.Error,
        key: "Invalid_left_hand_side_in_for_in_statement_2406",
        message: "Invalid left-hand side in 'for...in' statement."
      },
      The_right_hand_side_of_a_for_in_statement_must_be_of_type_any_an_object_type_or_a_type_parameter: {
        code: 2407,
        category: ts.DiagnosticCategory.Error,
        key: "The_right_hand_side_of_a_for_in_statement_must_be_of_type_any_an_object_type_or_a_type_parameter_2407",
        message: "The right-hand side of a 'for...in' statement must be of type 'any', an object type or a type parameter."
      },
      Setters_cannot_return_a_value: {
        code: 2408,
        category: ts.DiagnosticCategory.Error,
        key: "Setters_cannot_return_a_value_2408",
        message: "Setters cannot return a value."
      },
      Return_type_of_constructor_signature_must_be_assignable_to_the_instance_type_of_the_class: {
        code: 2409,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_constructor_signature_must_be_assignable_to_the_instance_type_of_the_class_2409",
        message: "Return type of constructor signature must be assignable to the instance type of the class"
      },
      All_symbols_within_a_with_block_will_be_resolved_to_any: {
        code: 2410,
        category: ts.DiagnosticCategory.Error,
        key: "All_symbols_within_a_with_block_will_be_resolved_to_any_2410",
        message: "All symbols within a 'with' block will be resolved to 'any'."
      },
      Property_0_of_type_1_is_not_assignable_to_string_index_type_2: {
        code: 2411,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_of_type_1_is_not_assignable_to_string_index_type_2_2411",
        message: "Property '{0}' of type '{1}' is not assignable to string index type '{2}'."
      },
      Property_0_of_type_1_is_not_assignable_to_numeric_index_type_2: {
        code: 2412,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_of_type_1_is_not_assignable_to_numeric_index_type_2_2412",
        message: "Property '{0}' of type '{1}' is not assignable to numeric index type '{2}'."
      },
      Numeric_index_type_0_is_not_assignable_to_string_index_type_1: {
        code: 2413,
        category: ts.DiagnosticCategory.Error,
        key: "Numeric_index_type_0_is_not_assignable_to_string_index_type_1_2413",
        message: "Numeric index type '{0}' is not assignable to string index type '{1}'."
      },
      Class_name_cannot_be_0: {
        code: 2414,
        category: ts.DiagnosticCategory.Error,
        key: "Class_name_cannot_be_0_2414",
        message: "Class name cannot be '{0}'"
      },
      Class_0_incorrectly_extends_base_class_1: {
        code: 2415,
        category: ts.DiagnosticCategory.Error,
        key: "Class_0_incorrectly_extends_base_class_1_2415",
        message: "Class '{0}' incorrectly extends base class '{1}'."
      },
      Class_static_side_0_incorrectly_extends_base_class_static_side_1: {
        code: 2417,
        category: ts.DiagnosticCategory.Error,
        key: "Class_static_side_0_incorrectly_extends_base_class_static_side_1_2417",
        message: "Class static side '{0}' incorrectly extends base class static side '{1}'."
      },
      Type_name_0_in_extends_clause_does_not_reference_constructor_function_for_0: {
        code: 2419,
        category: ts.DiagnosticCategory.Error,
        key: "Type_name_0_in_extends_clause_does_not_reference_constructor_function_for_0_2419",
        message: "Type name '{0}' in extends clause does not reference constructor function for '{0}'."
      },
      Class_0_incorrectly_implements_interface_1: {
        code: 2420,
        category: ts.DiagnosticCategory.Error,
        key: "Class_0_incorrectly_implements_interface_1_2420",
        message: "Class '{0}' incorrectly implements interface '{1}'."
      },
      A_class_may_only_implement_another_class_or_interface: {
        code: 2422,
        category: ts.DiagnosticCategory.Error,
        key: "A_class_may_only_implement_another_class_or_interface_2422",
        message: "A class may only implement another class or interface."
      },
      Class_0_defines_instance_member_function_1_but_extended_class_2_defines_it_as_instance_member_accessor: {
        code: 2423,
        category: ts.DiagnosticCategory.Error,
        key: "Class_0_defines_instance_member_function_1_but_extended_class_2_defines_it_as_instance_member_access_2423",
        message: "Class '{0}' defines instance member function '{1}', but extended class '{2}' defines it as instance member accessor."
      },
      Class_0_defines_instance_member_function_1_but_extended_class_2_defines_it_as_instance_member_property: {
        code: 2424,
        category: ts.DiagnosticCategory.Error,
        key: "Class_0_defines_instance_member_function_1_but_extended_class_2_defines_it_as_instance_member_proper_2424",
        message: "Class '{0}' defines instance member function '{1}', but extended class '{2}' defines it as instance member property."
      },
      Class_0_defines_instance_member_property_1_but_extended_class_2_defines_it_as_instance_member_function: {
        code: 2425,
        category: ts.DiagnosticCategory.Error,
        key: "Class_0_defines_instance_member_property_1_but_extended_class_2_defines_it_as_instance_member_functi_2425",
        message: "Class '{0}' defines instance member property '{1}', but extended class '{2}' defines it as instance member function."
      },
      Class_0_defines_instance_member_accessor_1_but_extended_class_2_defines_it_as_instance_member_function: {
        code: 2426,
        category: ts.DiagnosticCategory.Error,
        key: "Class_0_defines_instance_member_accessor_1_but_extended_class_2_defines_it_as_instance_member_functi_2426",
        message: "Class '{0}' defines instance member accessor '{1}', but extended class '{2}' defines it as instance member function."
      },
      Interface_name_cannot_be_0: {
        code: 2427,
        category: ts.DiagnosticCategory.Error,
        key: "Interface_name_cannot_be_0_2427",
        message: "Interface name cannot be '{0}'"
      },
      All_declarations_of_an_interface_must_have_identical_type_parameters: {
        code: 2428,
        category: ts.DiagnosticCategory.Error,
        key: "All_declarations_of_an_interface_must_have_identical_type_parameters_2428",
        message: "All declarations of an interface must have identical type parameters."
      },
      Interface_0_incorrectly_extends_interface_1: {
        code: 2430,
        category: ts.DiagnosticCategory.Error,
        key: "Interface_0_incorrectly_extends_interface_1_2430",
        message: "Interface '{0}' incorrectly extends interface '{1}'."
      },
      Enum_name_cannot_be_0: {
        code: 2431,
        category: ts.DiagnosticCategory.Error,
        key: "Enum_name_cannot_be_0_2431",
        message: "Enum name cannot be '{0}'"
      },
      In_an_enum_with_multiple_declarations_only_one_declaration_can_omit_an_initializer_for_its_first_enum_element: {
        code: 2432,
        category: ts.DiagnosticCategory.Error,
        key: "In_an_enum_with_multiple_declarations_only_one_declaration_can_omit_an_initializer_for_its_first_enu_2432",
        message: "In an enum with multiple declarations, only one declaration can omit an initializer for its first enum element."
      },
      A_namespace_declaration_cannot_be_in_a_different_file_from_a_class_or_function_with_which_it_is_merged: {
        code: 2433,
        category: ts.DiagnosticCategory.Error,
        key: "A_namespace_declaration_cannot_be_in_a_different_file_from_a_class_or_function_with_which_it_is_merg_2433",
        message: "A namespace declaration cannot be in a different file from a class or function with which it is merged"
      },
      A_namespace_declaration_cannot_be_located_prior_to_a_class_or_function_with_which_it_is_merged: {
        code: 2434,
        category: ts.DiagnosticCategory.Error,
        key: "A_namespace_declaration_cannot_be_located_prior_to_a_class_or_function_with_which_it_is_merged_2434",
        message: "A namespace declaration cannot be located prior to a class or function with which it is merged"
      },
      Ambient_modules_cannot_be_nested_in_other_modules_or_namespaces: {
        code: 2435,
        category: ts.DiagnosticCategory.Error,
        key: "Ambient_modules_cannot_be_nested_in_other_modules_or_namespaces_2435",
        message: "Ambient modules cannot be nested in other modules or namespaces."
      },
      Ambient_module_declaration_cannot_specify_relative_module_name: {
        code: 2436,
        category: ts.DiagnosticCategory.Error,
        key: "Ambient_module_declaration_cannot_specify_relative_module_name_2436",
        message: "Ambient module declaration cannot specify relative module name."
      },
      Module_0_is_hidden_by_a_local_declaration_with_the_same_name: {
        code: 2437,
        category: ts.DiagnosticCategory.Error,
        key: "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437",
        message: "Module '{0}' is hidden by a local declaration with the same name"
      },
      Import_name_cannot_be_0: {
        code: 2438,
        category: ts.DiagnosticCategory.Error,
        key: "Import_name_cannot_be_0_2438",
        message: "Import name cannot be '{0}'"
      },
      Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relative_module_name: {
        code: 2439,
        category: ts.DiagnosticCategory.Error,
        key: "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439",
        message: "Import or export declaration in an ambient module declaration cannot reference module through relative module name."
      },
      Import_declaration_conflicts_with_local_declaration_of_0: {
        code: 2440,
        category: ts.DiagnosticCategory.Error,
        key: "Import_declaration_conflicts_with_local_declaration_of_0_2440",
        message: "Import declaration conflicts with local declaration of '{0}'"
      },
      Duplicate_identifier_0_Compiler_reserves_name_1_in_top_level_scope_of_a_module: {
        code: 2441,
        category: ts.DiagnosticCategory.Error,
        key: "Duplicate_identifier_0_Compiler_reserves_name_1_in_top_level_scope_of_a_module_2441",
        message: "Duplicate identifier '{0}'. Compiler reserves name '{1}' in top level scope of a module."
      },
      Types_have_separate_declarations_of_a_private_property_0: {
        code: 2442,
        category: ts.DiagnosticCategory.Error,
        key: "Types_have_separate_declarations_of_a_private_property_0_2442",
        message: "Types have separate declarations of a private property '{0}'."
      },
      Property_0_is_protected_but_type_1_is_not_a_class_derived_from_2: {
        code: 2443,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_is_protected_but_type_1_is_not_a_class_derived_from_2_2443",
        message: "Property '{0}' is protected but type '{1}' is not a class derived from '{2}'."
      },
      Property_0_is_protected_in_type_1_but_public_in_type_2: {
        code: 2444,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_is_protected_in_type_1_but_public_in_type_2_2444",
        message: "Property '{0}' is protected in type '{1}' but public in type '{2}'."
      },
      Property_0_is_protected_and_only_accessible_within_class_1_and_its_subclasses: {
        code: 2445,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_is_protected_and_only_accessible_within_class_1_and_its_subclasses_2445",
        message: "Property '{0}' is protected and only accessible within class '{1}' and its subclasses."
      },
      Property_0_is_protected_and_only_accessible_through_an_instance_of_class_1: {
        code: 2446,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_is_protected_and_only_accessible_through_an_instance_of_class_1_2446",
        message: "Property '{0}' is protected and only accessible through an instance of class '{1}'."
      },
      The_0_operator_is_not_allowed_for_boolean_types_Consider_using_1_instead: {
        code: 2447,
        category: ts.DiagnosticCategory.Error,
        key: "The_0_operator_is_not_allowed_for_boolean_types_Consider_using_1_instead_2447",
        message: "The '{0}' operator is not allowed for boolean types. Consider using '{1}' instead."
      },
      Block_scoped_variable_0_used_before_its_declaration: {
        code: 2448,
        category: ts.DiagnosticCategory.Error,
        key: "Block_scoped_variable_0_used_before_its_declaration_2448",
        message: "Block-scoped variable '{0}' used before its declaration."
      },
      The_operand_of_an_increment_or_decrement_operator_cannot_be_a_constant: {
        code: 2449,
        category: ts.DiagnosticCategory.Error,
        key: "The_operand_of_an_increment_or_decrement_operator_cannot_be_a_constant_2449",
        message: "The operand of an increment or decrement operator cannot be a constant."
      },
      Left_hand_side_of_assignment_expression_cannot_be_a_constant: {
        code: 2450,
        category: ts.DiagnosticCategory.Error,
        key: "Left_hand_side_of_assignment_expression_cannot_be_a_constant_2450",
        message: "Left-hand side of assignment expression cannot be a constant."
      },
      Cannot_redeclare_block_scoped_variable_0: {
        code: 2451,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_redeclare_block_scoped_variable_0_2451",
        message: "Cannot redeclare block-scoped variable '{0}'."
      },
      An_enum_member_cannot_have_a_numeric_name: {
        code: 2452,
        category: ts.DiagnosticCategory.Error,
        key: "An_enum_member_cannot_have_a_numeric_name_2452",
        message: "An enum member cannot have a numeric name."
      },
      The_type_argument_for_type_parameter_0_cannot_be_inferred_from_the_usage_Consider_specifying_the_type_arguments_explicitly: {
        code: 2453,
        category: ts.DiagnosticCategory.Error,
        key: "The_type_argument_for_type_parameter_0_cannot_be_inferred_from_the_usage_Consider_specifying_the_typ_2453",
        message: "The type argument for type parameter '{0}' cannot be inferred from the usage. Consider specifying the type arguments explicitly."
      },
      Type_argument_candidate_1_is_not_a_valid_type_argument_because_it_is_not_a_supertype_of_candidate_0: {
        code: 2455,
        category: ts.DiagnosticCategory.Error,
        key: "Type_argument_candidate_1_is_not_a_valid_type_argument_because_it_is_not_a_supertype_of_candidate_0_2455",
        message: "Type argument candidate '{1}' is not a valid type argument because it is not a supertype of candidate '{0}'."
      },
      Type_alias_0_circularly_references_itself: {
        code: 2456,
        category: ts.DiagnosticCategory.Error,
        key: "Type_alias_0_circularly_references_itself_2456",
        message: "Type alias '{0}' circularly references itself."
      },
      Type_alias_name_cannot_be_0: {
        code: 2457,
        category: ts.DiagnosticCategory.Error,
        key: "Type_alias_name_cannot_be_0_2457",
        message: "Type alias name cannot be '{0}'"
      },
      An_AMD_module_cannot_have_multiple_name_assignments: {
        code: 2458,
        category: ts.DiagnosticCategory.Error,
        key: "An_AMD_module_cannot_have_multiple_name_assignments_2458",
        message: "An AMD module cannot have multiple name assignments."
      },
      Type_0_has_no_property_1_and_no_string_index_signature: {
        code: 2459,
        category: ts.DiagnosticCategory.Error,
        key: "Type_0_has_no_property_1_and_no_string_index_signature_2459",
        message: "Type '{0}' has no property '{1}' and no string index signature."
      },
      Type_0_has_no_property_1: {
        code: 2460,
        category: ts.DiagnosticCategory.Error,
        key: "Type_0_has_no_property_1_2460",
        message: "Type '{0}' has no property '{1}'."
      },
      Type_0_is_not_an_array_type: {
        code: 2461,
        category: ts.DiagnosticCategory.Error,
        key: "Type_0_is_not_an_array_type_2461",
        message: "Type '{0}' is not an array type."
      },
      A_rest_element_must_be_last_in_an_array_destructuring_pattern: {
        code: 2462,
        category: ts.DiagnosticCategory.Error,
        key: "A_rest_element_must_be_last_in_an_array_destructuring_pattern_2462",
        message: "A rest element must be last in an array destructuring pattern"
      },
      A_binding_pattern_parameter_cannot_be_optional_in_an_implementation_signature: {
        code: 2463,
        category: ts.DiagnosticCategory.Error,
        key: "A_binding_pattern_parameter_cannot_be_optional_in_an_implementation_signature_2463",
        message: "A binding pattern parameter cannot be optional in an implementation signature."
      },
      A_computed_property_name_must_be_of_type_string_number_symbol_or_any: {
        code: 2464,
        category: ts.DiagnosticCategory.Error,
        key: "A_computed_property_name_must_be_of_type_string_number_symbol_or_any_2464",
        message: "A computed property name must be of type 'string', 'number', 'symbol', or 'any'."
      },
      this_cannot_be_referenced_in_a_computed_property_name: {
        code: 2465,
        category: ts.DiagnosticCategory.Error,
        key: "this_cannot_be_referenced_in_a_computed_property_name_2465",
        message: "'this' cannot be referenced in a computed property name."
      },
      super_cannot_be_referenced_in_a_computed_property_name: {
        code: 2466,
        category: ts.DiagnosticCategory.Error,
        key: "super_cannot_be_referenced_in_a_computed_property_name_2466",
        message: "'super' cannot be referenced in a computed property name."
      },
      A_computed_property_name_cannot_reference_a_type_parameter_from_its_containing_type: {
        code: 2467,
        category: ts.DiagnosticCategory.Error,
        key: "A_computed_property_name_cannot_reference_a_type_parameter_from_its_containing_type_2467",
        message: "A computed property name cannot reference a type parameter from its containing type."
      },
      Cannot_find_global_value_0: {
        code: 2468,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_find_global_value_0_2468",
        message: "Cannot find global value '{0}'."
      },
      The_0_operator_cannot_be_applied_to_type_symbol: {
        code: 2469,
        category: ts.DiagnosticCategory.Error,
        key: "The_0_operator_cannot_be_applied_to_type_symbol_2469",
        message: "The '{0}' operator cannot be applied to type 'symbol'."
      },
      Symbol_reference_does_not_refer_to_the_global_Symbol_constructor_object: {
        code: 2470,
        category: ts.DiagnosticCategory.Error,
        key: "Symbol_reference_does_not_refer_to_the_global_Symbol_constructor_object_2470",
        message: "'Symbol' reference does not refer to the global Symbol constructor object."
      },
      A_computed_property_name_of_the_form_0_must_be_of_type_symbol: {
        code: 2471,
        category: ts.DiagnosticCategory.Error,
        key: "A_computed_property_name_of_the_form_0_must_be_of_type_symbol_2471",
        message: "A computed property name of the form '{0}' must be of type 'symbol'."
      },
      Spread_operator_in_new_expressions_is_only_available_when_targeting_ECMAScript_5_and_higher: {
        code: 2472,
        category: ts.DiagnosticCategory.Error,
        key: "Spread_operator_in_new_expressions_is_only_available_when_targeting_ECMAScript_5_and_higher_2472",
        message: "Spread operator in 'new' expressions is only available when targeting ECMAScript 5 and higher."
      },
      Enum_declarations_must_all_be_const_or_non_const: {
        code: 2473,
        category: ts.DiagnosticCategory.Error,
        key: "Enum_declarations_must_all_be_const_or_non_const_2473",
        message: "Enum declarations must all be const or non-const."
      },
      In_const_enum_declarations_member_initializer_must_be_constant_expression: {
        code: 2474,
        category: ts.DiagnosticCategory.Error,
        key: "In_const_enum_declarations_member_initializer_must_be_constant_expression_2474",
        message: "In 'const' enum declarations member initializer must be constant expression."
      },
      const_enums_can_only_be_used_in_property_or_index_access_expressions_or_the_right_hand_side_of_an_import_declaration_or_export_assignment: {
        code: 2475,
        category: ts.DiagnosticCategory.Error,
        key: "const_enums_can_only_be_used_in_property_or_index_access_expressions_or_the_right_hand_side_of_an_im_2475",
        message: "'const' enums can only be used in property or index access expressions or the right hand side of an import declaration or export assignment."
      },
      A_const_enum_member_can_only_be_accessed_using_a_string_literal: {
        code: 2476,
        category: ts.DiagnosticCategory.Error,
        key: "A_const_enum_member_can_only_be_accessed_using_a_string_literal_2476",
        message: "A const enum member can only be accessed using a string literal."
      },
      const_enum_member_initializer_was_evaluated_to_a_non_finite_value: {
        code: 2477,
        category: ts.DiagnosticCategory.Error,
        key: "const_enum_member_initializer_was_evaluated_to_a_non_finite_value_2477",
        message: "'const' enum member initializer was evaluated to a non-finite value."
      },
      const_enum_member_initializer_was_evaluated_to_disallowed_value_NaN: {
        code: 2478,
        category: ts.DiagnosticCategory.Error,
        key: "const_enum_member_initializer_was_evaluated_to_disallowed_value_NaN_2478",
        message: "'const' enum member initializer was evaluated to disallowed value 'NaN'."
      },
      Property_0_does_not_exist_on_const_enum_1: {
        code: 2479,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_does_not_exist_on_const_enum_1_2479",
        message: "Property '{0}' does not exist on 'const' enum '{1}'."
      },
      let_is_not_allowed_to_be_used_as_a_name_in_let_or_const_declarations: {
        code: 2480,
        category: ts.DiagnosticCategory.Error,
        key: "let_is_not_allowed_to_be_used_as_a_name_in_let_or_const_declarations_2480",
        message: "'let' is not allowed to be used as a name in 'let' or 'const' declarations."
      },
      Cannot_initialize_outer_scoped_variable_0_in_the_same_scope_as_block_scoped_declaration_1: {
        code: 2481,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_initialize_outer_scoped_variable_0_in_the_same_scope_as_block_scoped_declaration_1_2481",
        message: "Cannot initialize outer scoped variable '{0}' in the same scope as block scoped declaration '{1}'."
      },
      The_left_hand_side_of_a_for_of_statement_cannot_use_a_type_annotation: {
        code: 2483,
        category: ts.DiagnosticCategory.Error,
        key: "The_left_hand_side_of_a_for_of_statement_cannot_use_a_type_annotation_2483",
        message: "The left-hand side of a 'for...of' statement cannot use a type annotation."
      },
      Export_declaration_conflicts_with_exported_declaration_of_0: {
        code: 2484,
        category: ts.DiagnosticCategory.Error,
        key: "Export_declaration_conflicts_with_exported_declaration_of_0_2484",
        message: "Export declaration conflicts with exported declaration of '{0}'"
      },
      The_left_hand_side_of_a_for_of_statement_cannot_be_a_previously_defined_constant: {
        code: 2485,
        category: ts.DiagnosticCategory.Error,
        key: "The_left_hand_side_of_a_for_of_statement_cannot_be_a_previously_defined_constant_2485",
        message: "The left-hand side of a 'for...of' statement cannot be a previously defined constant."
      },
      The_left_hand_side_of_a_for_in_statement_cannot_be_a_previously_defined_constant: {
        code: 2486,
        category: ts.DiagnosticCategory.Error,
        key: "The_left_hand_side_of_a_for_in_statement_cannot_be_a_previously_defined_constant_2486",
        message: "The left-hand side of a 'for...in' statement cannot be a previously defined constant."
      },
      Invalid_left_hand_side_in_for_of_statement: {
        code: 2487,
        category: ts.DiagnosticCategory.Error,
        key: "Invalid_left_hand_side_in_for_of_statement_2487",
        message: "Invalid left-hand side in 'for...of' statement."
      },
      Type_must_have_a_Symbol_iterator_method_that_returns_an_iterator: {
        code: 2488,
        category: ts.DiagnosticCategory.Error,
        key: "Type_must_have_a_Symbol_iterator_method_that_returns_an_iterator_2488",
        message: "Type must have a '[Symbol.iterator]()' method that returns an iterator."
      },
      An_iterator_must_have_a_next_method: {
        code: 2489,
        category: ts.DiagnosticCategory.Error,
        key: "An_iterator_must_have_a_next_method_2489",
        message: "An iterator must have a 'next()' method."
      },
      The_type_returned_by_the_next_method_of_an_iterator_must_have_a_value_property: {
        code: 2490,
        category: ts.DiagnosticCategory.Error,
        key: "The_type_returned_by_the_next_method_of_an_iterator_must_have_a_value_property_2490",
        message: "The type returned by the 'next()' method of an iterator must have a 'value' property."
      },
      The_left_hand_side_of_a_for_in_statement_cannot_be_a_destructuring_pattern: {
        code: 2491,
        category: ts.DiagnosticCategory.Error,
        key: "The_left_hand_side_of_a_for_in_statement_cannot_be_a_destructuring_pattern_2491",
        message: "The left-hand side of a 'for...in' statement cannot be a destructuring pattern."
      },
      Cannot_redeclare_identifier_0_in_catch_clause: {
        code: 2492,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_redeclare_identifier_0_in_catch_clause_2492",
        message: "Cannot redeclare identifier '{0}' in catch clause"
      },
      Tuple_type_0_with_length_1_cannot_be_assigned_to_tuple_with_length_2: {
        code: 2493,
        category: ts.DiagnosticCategory.Error,
        key: "Tuple_type_0_with_length_1_cannot_be_assigned_to_tuple_with_length_2_2493",
        message: "Tuple type '{0}' with length '{1}' cannot be assigned to tuple with length '{2}'."
      },
      Using_a_string_in_a_for_of_statement_is_only_supported_in_ECMAScript_5_and_higher: {
        code: 2494,
        category: ts.DiagnosticCategory.Error,
        key: "Using_a_string_in_a_for_of_statement_is_only_supported_in_ECMAScript_5_and_higher_2494",
        message: "Using a string in a 'for...of' statement is only supported in ECMAScript 5 and higher."
      },
      Type_0_is_not_an_array_type_or_a_string_type: {
        code: 2495,
        category: ts.DiagnosticCategory.Error,
        key: "Type_0_is_not_an_array_type_or_a_string_type_2495",
        message: "Type '{0}' is not an array type or a string type."
      },
      The_arguments_object_cannot_be_referenced_in_an_arrow_function_in_ES3_and_ES5_Consider_using_a_standard_function_expression: {
        code: 2496,
        category: ts.DiagnosticCategory.Error,
        key: "The_arguments_object_cannot_be_referenced_in_an_arrow_function_in_ES3_and_ES5_Consider_using_a_stand_2496",
        message: "The 'arguments' object cannot be referenced in an arrow function in ES3 and ES5. Consider using a standard function expression."
      },
      Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct: {
        code: 2497,
        category: ts.DiagnosticCategory.Error,
        key: "Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct_2497",
        message: "Module '{0}' resolves to a non-module entity and cannot be imported using this construct."
      },
      Module_0_uses_export_and_cannot_be_used_with_export_Asterisk: {
        code: 2498,
        category: ts.DiagnosticCategory.Error,
        key: "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498",
        message: "Module '{0}' uses 'export =' and cannot be used with 'export *'."
      },
      An_interface_can_only_extend_an_identifier_Slashqualified_name_with_optional_type_arguments: {
        code: 2499,
        category: ts.DiagnosticCategory.Error,
        key: "An_interface_can_only_extend_an_identifier_Slashqualified_name_with_optional_type_arguments_2499",
        message: "An interface can only extend an identifier/qualified-name with optional type arguments."
      },
      A_class_can_only_implement_an_identifier_Slashqualified_name_with_optional_type_arguments: {
        code: 2500,
        category: ts.DiagnosticCategory.Error,
        key: "A_class_can_only_implement_an_identifier_Slashqualified_name_with_optional_type_arguments_2500",
        message: "A class can only implement an identifier/qualified-name with optional type arguments."
      },
      A_rest_element_cannot_contain_a_binding_pattern: {
        code: 2501,
        category: ts.DiagnosticCategory.Error,
        key: "A_rest_element_cannot_contain_a_binding_pattern_2501",
        message: "A rest element cannot contain a binding pattern."
      },
      _0_is_referenced_directly_or_indirectly_in_its_own_type_annotation: {
        code: 2502,
        category: ts.DiagnosticCategory.Error,
        key: "_0_is_referenced_directly_or_indirectly_in_its_own_type_annotation_2502",
        message: "'{0}' is referenced directly or indirectly in its own type annotation."
      },
      Cannot_find_namespace_0: {
        code: 2503,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_find_namespace_0_2503",
        message: "Cannot find namespace '{0}'."
      },
      No_best_common_type_exists_among_yield_expressions: {
        code: 2504,
        category: ts.DiagnosticCategory.Error,
        key: "No_best_common_type_exists_among_yield_expressions_2504",
        message: "No best common type exists among yield expressions."
      },
      A_generator_cannot_have_a_void_type_annotation: {
        code: 2505,
        category: ts.DiagnosticCategory.Error,
        key: "A_generator_cannot_have_a_void_type_annotation_2505",
        message: "A generator cannot have a 'void' type annotation."
      },
      _0_is_referenced_directly_or_indirectly_in_its_own_base_expression: {
        code: 2506,
        category: ts.DiagnosticCategory.Error,
        key: "_0_is_referenced_directly_or_indirectly_in_its_own_base_expression_2506",
        message: "'{0}' is referenced directly or indirectly in its own base expression."
      },
      Type_0_is_not_a_constructor_function_type: {
        code: 2507,
        category: ts.DiagnosticCategory.Error,
        key: "Type_0_is_not_a_constructor_function_type_2507",
        message: "Type '{0}' is not a constructor function type."
      },
      No_base_constructor_has_the_specified_number_of_type_arguments: {
        code: 2508,
        category: ts.DiagnosticCategory.Error,
        key: "No_base_constructor_has_the_specified_number_of_type_arguments_2508",
        message: "No base constructor has the specified number of type arguments."
      },
      Base_constructor_return_type_0_is_not_a_class_or_interface_type: {
        code: 2509,
        category: ts.DiagnosticCategory.Error,
        key: "Base_constructor_return_type_0_is_not_a_class_or_interface_type_2509",
        message: "Base constructor return type '{0}' is not a class or interface type."
      },
      Base_constructors_must_all_have_the_same_return_type: {
        code: 2510,
        category: ts.DiagnosticCategory.Error,
        key: "Base_constructors_must_all_have_the_same_return_type_2510",
        message: "Base constructors must all have the same return type."
      },
      Cannot_create_an_instance_of_the_abstract_class_0: {
        code: 2511,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_create_an_instance_of_the_abstract_class_0_2511",
        message: "Cannot create an instance of the abstract class '{0}'."
      },
      Overload_signatures_must_all_be_abstract_or_not_abstract: {
        code: 2512,
        category: ts.DiagnosticCategory.Error,
        key: "Overload_signatures_must_all_be_abstract_or_not_abstract_2512",
        message: "Overload signatures must all be abstract or not abstract."
      },
      Abstract_method_0_in_class_1_cannot_be_accessed_via_super_expression: {
        code: 2513,
        category: ts.DiagnosticCategory.Error,
        key: "Abstract_method_0_in_class_1_cannot_be_accessed_via_super_expression_2513",
        message: "Abstract method '{0}' in class '{1}' cannot be accessed via super expression."
      },
      Classes_containing_abstract_methods_must_be_marked_abstract: {
        code: 2514,
        category: ts.DiagnosticCategory.Error,
        key: "Classes_containing_abstract_methods_must_be_marked_abstract_2514",
        message: "Classes containing abstract methods must be marked abstract."
      },
      Non_abstract_class_0_does_not_implement_inherited_abstract_member_1_from_class_2: {
        code: 2515,
        category: ts.DiagnosticCategory.Error,
        key: "Non_abstract_class_0_does_not_implement_inherited_abstract_member_1_from_class_2_2515",
        message: "Non-abstract class '{0}' does not implement inherited abstract member '{1}' from class '{2}'."
      },
      All_declarations_of_an_abstract_method_must_be_consecutive: {
        code: 2516,
        category: ts.DiagnosticCategory.Error,
        key: "All_declarations_of_an_abstract_method_must_be_consecutive_2516",
        message: "All declarations of an abstract method must be consecutive."
      },
      Cannot_assign_an_abstract_constructor_type_to_a_non_abstract_constructor_type: {
        code: 2517,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_assign_an_abstract_constructor_type_to_a_non_abstract_constructor_type_2517",
        message: "Cannot assign an abstract constructor type to a non-abstract constructor type."
      },
      A_this_based_type_guard_is_not_compatible_with_a_parameter_based_type_guard: {
        code: 2518,
        category: ts.DiagnosticCategory.Error,
        key: "A_this_based_type_guard_is_not_compatible_with_a_parameter_based_type_guard_2518",
        message: "A 'this'-based type guard is not compatible with a parameter-based type guard."
      },
      Duplicate_identifier_0_Compiler_uses_declaration_1_to_support_async_functions: {
        code: 2520,
        category: ts.DiagnosticCategory.Error,
        key: "Duplicate_identifier_0_Compiler_uses_declaration_1_to_support_async_functions_2520",
        message: "Duplicate identifier '{0}'. Compiler uses declaration '{1}' to support async functions."
      },
      Expression_resolves_to_variable_declaration_0_that_compiler_uses_to_support_async_functions: {
        code: 2521,
        category: ts.DiagnosticCategory.Error,
        key: "Expression_resolves_to_variable_declaration_0_that_compiler_uses_to_support_async_functions_2521",
        message: "Expression resolves to variable declaration '{0}' that compiler uses to support async functions."
      },
      The_arguments_object_cannot_be_referenced_in_an_async_arrow_function_Consider_using_a_standard_async_function_expression: {
        code: 2522,
        category: ts.DiagnosticCategory.Error,
        key: "The_arguments_object_cannot_be_referenced_in_an_async_arrow_function_Consider_using_a_standard_async_2522",
        message: "The 'arguments' object cannot be referenced in an async arrow function. Consider using a standard async function expression."
      },
      yield_expressions_cannot_be_used_in_a_parameter_initializer: {
        code: 2523,
        category: ts.DiagnosticCategory.Error,
        key: "yield_expressions_cannot_be_used_in_a_parameter_initializer_2523",
        message: "'yield' expressions cannot be used in a parameter initializer."
      },
      await_expressions_cannot_be_used_in_a_parameter_initializer: {
        code: 2524,
        category: ts.DiagnosticCategory.Error,
        key: "await_expressions_cannot_be_used_in_a_parameter_initializer_2524",
        message: "'await' expressions cannot be used in a parameter initializer."
      },
      Initializer_provides_no_value_for_this_binding_element_and_the_binding_element_has_no_default_value: {
        code: 2525,
        category: ts.DiagnosticCategory.Error,
        key: "Initializer_provides_no_value_for_this_binding_element_and_the_binding_element_has_no_default_value_2525",
        message: "Initializer provides no value for this binding element and the binding element has no default value."
      },
      A_this_type_is_available_only_in_a_non_static_member_of_a_class_or_interface: {
        code: 2526,
        category: ts.DiagnosticCategory.Error,
        key: "A_this_type_is_available_only_in_a_non_static_member_of_a_class_or_interface_2526",
        message: "A 'this' type is available only in a non-static member of a class or interface."
      },
      The_inferred_type_of_0_references_an_inaccessible_this_type_A_type_annotation_is_necessary: {
        code: 2527,
        category: ts.DiagnosticCategory.Error,
        key: "The_inferred_type_of_0_references_an_inaccessible_this_type_A_type_annotation_is_necessary_2527",
        message: "The inferred type of '{0}' references an inaccessible 'this' type. A type annotation is necessary."
      },
      A_module_cannot_have_multiple_default_exports: {
        code: 2528,
        category: ts.DiagnosticCategory.Error,
        key: "A_module_cannot_have_multiple_default_exports_2528",
        message: "A module cannot have multiple default exports."
      },
      Duplicate_identifier_0_Compiler_reserves_name_1_in_top_level_scope_of_a_module_containing_async_functions: {
        code: 2529,
        category: ts.DiagnosticCategory.Error,
        key: "Duplicate_identifier_0_Compiler_reserves_name_1_in_top_level_scope_of_a_module_containing_async_func_2529",
        message: "Duplicate identifier '{0}'. Compiler reserves name '{1}' in top level scope of a module containing async functions."
      },
      JSX_element_attributes_type_0_may_not_be_a_union_type: {
        code: 2600,
        category: ts.DiagnosticCategory.Error,
        key: "JSX_element_attributes_type_0_may_not_be_a_union_type_2600",
        message: "JSX element attributes type '{0}' may not be a union type."
      },
      The_return_type_of_a_JSX_element_constructor_must_return_an_object_type: {
        code: 2601,
        category: ts.DiagnosticCategory.Error,
        key: "The_return_type_of_a_JSX_element_constructor_must_return_an_object_type_2601",
        message: "The return type of a JSX element constructor must return an object type."
      },
      JSX_element_implicitly_has_type_any_because_the_global_type_JSX_Element_does_not_exist: {
        code: 2602,
        category: ts.DiagnosticCategory.Error,
        key: "JSX_element_implicitly_has_type_any_because_the_global_type_JSX_Element_does_not_exist_2602",
        message: "JSX element implicitly has type 'any' because the global type 'JSX.Element' does not exist."
      },
      Property_0_in_type_1_is_not_assignable_to_type_2: {
        code: 2603,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_in_type_1_is_not_assignable_to_type_2_2603",
        message: "Property '{0}' in type '{1}' is not assignable to type '{2}'"
      },
      JSX_element_type_0_does_not_have_any_construct_or_call_signatures: {
        code: 2604,
        category: ts.DiagnosticCategory.Error,
        key: "JSX_element_type_0_does_not_have_any_construct_or_call_signatures_2604",
        message: "JSX element type '{0}' does not have any construct or call signatures."
      },
      JSX_element_type_0_is_not_a_constructor_function_for_JSX_elements: {
        code: 2605,
        category: ts.DiagnosticCategory.Error,
        key: "JSX_element_type_0_is_not_a_constructor_function_for_JSX_elements_2605",
        message: "JSX element type '{0}' is not a constructor function for JSX elements."
      },
      Property_0_of_JSX_spread_attribute_is_not_assignable_to_target_property: {
        code: 2606,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_of_JSX_spread_attribute_is_not_assignable_to_target_property_2606",
        message: "Property '{0}' of JSX spread attribute is not assignable to target property."
      },
      JSX_element_class_does_not_support_attributes_because_it_does_not_have_a_0_property: {
        code: 2607,
        category: ts.DiagnosticCategory.Error,
        key: "JSX_element_class_does_not_support_attributes_because_it_does_not_have_a_0_property_2607",
        message: "JSX element class does not support attributes because it does not have a '{0}' property"
      },
      The_global_type_JSX_0_may_not_have_more_than_one_property: {
        code: 2608,
        category: ts.DiagnosticCategory.Error,
        key: "The_global_type_JSX_0_may_not_have_more_than_one_property_2608",
        message: "The global type 'JSX.{0}' may not have more than one property"
      },
      Cannot_emit_namespaced_JSX_elements_in_React: {
        code: 2650,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_emit_namespaced_JSX_elements_in_React_2650",
        message: "Cannot emit namespaced JSX elements in React"
      },
      A_member_initializer_in_a_enum_declaration_cannot_reference_members_declared_after_it_including_members_defined_in_other_enums: {
        code: 2651,
        category: ts.DiagnosticCategory.Error,
        key: "A_member_initializer_in_a_enum_declaration_cannot_reference_members_declared_after_it_including_memb_2651",
        message: "A member initializer in a enum declaration cannot reference members declared after it, including members defined in other enums."
      },
      Merged_declaration_0_cannot_include_a_default_export_declaration_Consider_adding_a_separate_export_default_0_declaration_instead: {
        code: 2652,
        category: ts.DiagnosticCategory.Error,
        key: "Merged_declaration_0_cannot_include_a_default_export_declaration_Consider_adding_a_separate_export_d_2652",
        message: "Merged declaration '{0}' cannot include a default export declaration. Consider adding a separate 'export default {0}' declaration instead."
      },
      Non_abstract_class_expression_does_not_implement_inherited_abstract_member_0_from_class_1: {
        code: 2653,
        category: ts.DiagnosticCategory.Error,
        key: "Non_abstract_class_expression_does_not_implement_inherited_abstract_member_0_from_class_1_2653",
        message: "Non-abstract class expression does not implement inherited abstract member '{0}' from class '{1}'."
      },
      Exported_external_package_typings_file_cannot_contain_tripleslash_references_Please_contact_the_package_author_to_update_the_package_definition: {
        code: 2654,
        category: ts.DiagnosticCategory.Error,
        key: "Exported_external_package_typings_file_cannot_contain_tripleslash_references_Please_contact_the_pack_2654",
        message: "Exported external package typings file cannot contain tripleslash references. Please contact the package author to update the package definition."
      },
      Exported_external_package_typings_file_0_is_not_a_module_Please_contact_the_package_author_to_update_the_package_definition: {
        code: 2656,
        category: ts.DiagnosticCategory.Error,
        key: "Exported_external_package_typings_file_0_is_not_a_module_Please_contact_the_package_author_to_update_2656",
        message: "Exported external package typings file '{0}' is not a module. Please contact the package author to update the package definition."
      },
      JSX_expressions_must_have_one_parent_element: {
        code: 2657,
        category: ts.DiagnosticCategory.Error,
        key: "JSX_expressions_must_have_one_parent_element_2657",
        message: "JSX expressions must have one parent element"
      },
      Type_0_provides_no_match_for_the_signature_1: {
        code: 2658,
        category: ts.DiagnosticCategory.Error,
        key: "Type_0_provides_no_match_for_the_signature_1_2658",
        message: "Type '{0}' provides no match for the signature '{1}'"
      },
      super_is_only_allowed_in_members_of_object_literal_expressions_when_option_target_is_ES2015_or_higher: {
        code: 2659,
        category: ts.DiagnosticCategory.Error,
        key: "super_is_only_allowed_in_members_of_object_literal_expressions_when_option_target_is_ES2015_or_highe_2659",
        message: "'super' is only allowed in members of object literal expressions when option 'target' is 'ES2015' or higher."
      },
      super_can_only_be_referenced_in_members_of_derived_classes_or_object_literal_expressions: {
        code: 2660,
        category: ts.DiagnosticCategory.Error,
        key: "super_can_only_be_referenced_in_members_of_derived_classes_or_object_literal_expressions_2660",
        message: "'super' can only be referenced in members of derived classes or object literal expressions."
      },
      Cannot_re_export_name_that_is_not_defined_in_the_module: {
        code: 2661,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_re_export_name_that_is_not_defined_in_the_module_2661",
        message: "Cannot re-export name that is not defined in the module."
      },
      Cannot_find_name_0_Did_you_mean_the_static_member_1_0: {
        code: 2662,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_find_name_0_Did_you_mean_the_static_member_1_0_2662",
        message: "Cannot find name '{0}'. Did you mean the static member '{1}.{0}'?"
      },
      Cannot_find_name_0_Did_you_mean_the_instance_member_this_0: {
        code: 2663,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_find_name_0_Did_you_mean_the_instance_member_this_0_2663",
        message: "Cannot find name '{0}'. Did you mean the instance member 'this.{0}'?"
      },
      Invalid_module_name_in_augmentation_module_0_cannot_be_found: {
        code: 2664,
        category: ts.DiagnosticCategory.Error,
        key: "Invalid_module_name_in_augmentation_module_0_cannot_be_found_2664",
        message: "Invalid module name in augmentation, module '{0}' cannot be found."
      },
      Module_augmentation_cannot_introduce_new_names_in_the_top_level_scope: {
        code: 2665,
        category: ts.DiagnosticCategory.Error,
        key: "Module_augmentation_cannot_introduce_new_names_in_the_top_level_scope_2665",
        message: "Module augmentation cannot introduce new names in the top level scope."
      },
      Exports_and_export_assignments_are_not_permitted_in_module_augmentations: {
        code: 2666,
        category: ts.DiagnosticCategory.Error,
        key: "Exports_and_export_assignments_are_not_permitted_in_module_augmentations_2666",
        message: "Exports and export assignments are not permitted in module augmentations."
      },
      Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_module: {
        code: 2667,
        category: ts.DiagnosticCategory.Error,
        key: "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667",
        message: "Imports are not permitted in module augmentations. Consider moving them to the enclosing external module."
      },
      export_modifier_cannot_be_applied_to_ambient_modules_and_module_augmentations_since_they_are_always_visible: {
        code: 2668,
        category: ts.DiagnosticCategory.Error,
        key: "export_modifier_cannot_be_applied_to_ambient_modules_and_module_augmentations_since_they_are_always__2668",
        message: "'export' modifier cannot be applied to ambient modules and module augmentations since they are always visible."
      },
      Augmentations_for_the_global_scope_can_only_be_directly_nested_in_external_modules_or_ambient_module_declarations: {
        code: 2669,
        category: ts.DiagnosticCategory.Error,
        key: "Augmentations_for_the_global_scope_can_only_be_directly_nested_in_external_modules_or_ambient_module_2669",
        message: "Augmentations for the global scope can only be directly nested in external modules or ambient module declarations."
      },
      Augmentations_for_the_global_scope_should_have_declare_modifier_unless_they_appear_in_already_ambient_context: {
        code: 2670,
        category: ts.DiagnosticCategory.Error,
        key: "Augmentations_for_the_global_scope_should_have_declare_modifier_unless_they_appear_in_already_ambien_2670",
        message: "Augmentations for the global scope should have 'declare' modifier unless they appear in already ambient context."
      },
      Cannot_augment_module_0_because_it_resolves_to_a_non_module_entity: {
        code: 2671,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_augment_module_0_because_it_resolves_to_a_non_module_entity_2671",
        message: "Cannot augment module '{0}' because it resolves to a non-module entity."
      },
      Import_declaration_0_is_using_private_name_1: {
        code: 4000,
        category: ts.DiagnosticCategory.Error,
        key: "Import_declaration_0_is_using_private_name_1_4000",
        message: "Import declaration '{0}' is using private name '{1}'."
      },
      Type_parameter_0_of_exported_class_has_or_is_using_private_name_1: {
        code: 4002,
        category: ts.DiagnosticCategory.Error,
        key: "Type_parameter_0_of_exported_class_has_or_is_using_private_name_1_4002",
        message: "Type parameter '{0}' of exported class has or is using private name '{1}'."
      },
      Type_parameter_0_of_exported_interface_has_or_is_using_private_name_1: {
        code: 4004,
        category: ts.DiagnosticCategory.Error,
        key: "Type_parameter_0_of_exported_interface_has_or_is_using_private_name_1_4004",
        message: "Type parameter '{0}' of exported interface has or is using private name '{1}'."
      },
      Type_parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1: {
        code: 4006,
        category: ts.DiagnosticCategory.Error,
        key: "Type_parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1_4006",
        message: "Type parameter '{0}' of constructor signature from exported interface has or is using private name '{1}'."
      },
      Type_parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1: {
        code: 4008,
        category: ts.DiagnosticCategory.Error,
        key: "Type_parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1_4008",
        message: "Type parameter '{0}' of call signature from exported interface has or is using private name '{1}'."
      },
      Type_parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1: {
        code: 4010,
        category: ts.DiagnosticCategory.Error,
        key: "Type_parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1_4010",
        message: "Type parameter '{0}' of public static method from exported class has or is using private name '{1}'."
      },
      Type_parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1: {
        code: 4012,
        category: ts.DiagnosticCategory.Error,
        key: "Type_parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1_4012",
        message: "Type parameter '{0}' of public method from exported class has or is using private name '{1}'."
      },
      Type_parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1: {
        code: 4014,
        category: ts.DiagnosticCategory.Error,
        key: "Type_parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1_4014",
        message: "Type parameter '{0}' of method from exported interface has or is using private name '{1}'."
      },
      Type_parameter_0_of_exported_function_has_or_is_using_private_name_1: {
        code: 4016,
        category: ts.DiagnosticCategory.Error,
        key: "Type_parameter_0_of_exported_function_has_or_is_using_private_name_1_4016",
        message: "Type parameter '{0}' of exported function has or is using private name '{1}'."
      },
      Implements_clause_of_exported_class_0_has_or_is_using_private_name_1: {
        code: 4019,
        category: ts.DiagnosticCategory.Error,
        key: "Implements_clause_of_exported_class_0_has_or_is_using_private_name_1_4019",
        message: "Implements clause of exported class '{0}' has or is using private name '{1}'."
      },
      Extends_clause_of_exported_class_0_has_or_is_using_private_name_1: {
        code: 4020,
        category: ts.DiagnosticCategory.Error,
        key: "Extends_clause_of_exported_class_0_has_or_is_using_private_name_1_4020",
        message: "Extends clause of exported class '{0}' has or is using private name '{1}'."
      },
      Extends_clause_of_exported_interface_0_has_or_is_using_private_name_1: {
        code: 4022,
        category: ts.DiagnosticCategory.Error,
        key: "Extends_clause_of_exported_interface_0_has_or_is_using_private_name_1_4022",
        message: "Extends clause of exported interface '{0}' has or is using private name '{1}'."
      },
      Exported_variable_0_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: {
        code: 4023,
        category: ts.DiagnosticCategory.Error,
        key: "Exported_variable_0_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named_4023",
        message: "Exported variable '{0}' has or is using name '{1}' from external module {2} but cannot be named."
      },
      Exported_variable_0_has_or_is_using_name_1_from_private_module_2: {
        code: 4024,
        category: ts.DiagnosticCategory.Error,
        key: "Exported_variable_0_has_or_is_using_name_1_from_private_module_2_4024",
        message: "Exported variable '{0}' has or is using name '{1}' from private module '{2}'."
      },
      Exported_variable_0_has_or_is_using_private_name_1: {
        code: 4025,
        category: ts.DiagnosticCategory.Error,
        key: "Exported_variable_0_has_or_is_using_private_name_1_4025",
        message: "Exported variable '{0}' has or is using private name '{1}'."
      },
      Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: {
        code: 4026,
        category: ts.DiagnosticCategory.Error,
        key: "Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot__4026",
        message: "Public static property '{0}' of exported class has or is using name '{1}' from external module {2} but cannot be named."
      },
      Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2: {
        code: 4027,
        category: ts.DiagnosticCategory.Error,
        key: "Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2_4027",
        message: "Public static property '{0}' of exported class has or is using name '{1}' from private module '{2}'."
      },
      Public_static_property_0_of_exported_class_has_or_is_using_private_name_1: {
        code: 4028,
        category: ts.DiagnosticCategory.Error,
        key: "Public_static_property_0_of_exported_class_has_or_is_using_private_name_1_4028",
        message: "Public static property '{0}' of exported class has or is using private name '{1}'."
      },
      Public_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: {
        code: 4029,
        category: ts.DiagnosticCategory.Error,
        key: "Public_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_name_4029",
        message: "Public property '{0}' of exported class has or is using name '{1}' from external module {2} but cannot be named."
      },
      Public_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2: {
        code: 4030,
        category: ts.DiagnosticCategory.Error,
        key: "Public_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2_4030",
        message: "Public property '{0}' of exported class has or is using name '{1}' from private module '{2}'."
      },
      Public_property_0_of_exported_class_has_or_is_using_private_name_1: {
        code: 4031,
        category: ts.DiagnosticCategory.Error,
        key: "Public_property_0_of_exported_class_has_or_is_using_private_name_1_4031",
        message: "Public property '{0}' of exported class has or is using private name '{1}'."
      },
      Property_0_of_exported_interface_has_or_is_using_name_1_from_private_module_2: {
        code: 4032,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_of_exported_interface_has_or_is_using_name_1_from_private_module_2_4032",
        message: "Property '{0}' of exported interface has or is using name '{1}' from private module '{2}'."
      },
      Property_0_of_exported_interface_has_or_is_using_private_name_1: {
        code: 4033,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_of_exported_interface_has_or_is_using_private_name_1_4033",
        message: "Property '{0}' of exported interface has or is using private name '{1}'."
      },
      Parameter_0_of_public_static_property_setter_from_exported_class_has_or_is_using_name_1_from_private_module_2: {
        code: 4034,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_public_static_property_setter_from_exported_class_has_or_is_using_name_1_from_private_4034",
        message: "Parameter '{0}' of public static property setter from exported class has or is using name '{1}' from private module '{2}'."
      },
      Parameter_0_of_public_static_property_setter_from_exported_class_has_or_is_using_private_name_1: {
        code: 4035,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_public_static_property_setter_from_exported_class_has_or_is_using_private_name_1_4035",
        message: "Parameter '{0}' of public static property setter from exported class has or is using private name '{1}'."
      },
      Parameter_0_of_public_property_setter_from_exported_class_has_or_is_using_name_1_from_private_module_2: {
        code: 4036,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_public_property_setter_from_exported_class_has_or_is_using_name_1_from_private_module_4036",
        message: "Parameter '{0}' of public property setter from exported class has or is using name '{1}' from private module '{2}'."
      },
      Parameter_0_of_public_property_setter_from_exported_class_has_or_is_using_private_name_1: {
        code: 4037,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_public_property_setter_from_exported_class_has_or_is_using_private_name_1_4037",
        message: "Parameter '{0}' of public property setter from exported class has or is using private name '{1}'."
      },
      Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named: {
        code: 4038,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_name_0_from_externa_4038",
        message: "Return type of public static property getter from exported class has or is using name '{0}' from external module {1} but cannot be named."
      },
      Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_name_0_from_private_module_1: {
        code: 4039,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_name_0_from_private_4039",
        message: "Return type of public static property getter from exported class has or is using name '{0}' from private module '{1}'."
      },
      Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_private_name_0: {
        code: 4040,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_private_name_0_4040",
        message: "Return type of public static property getter from exported class has or is using private name '{0}'."
      },
      Return_type_of_public_property_getter_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named: {
        code: 4041,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_public_property_getter_from_exported_class_has_or_is_using_name_0_from_external_modul_4041",
        message: "Return type of public property getter from exported class has or is using name '{0}' from external module {1} but cannot be named."
      },
      Return_type_of_public_property_getter_from_exported_class_has_or_is_using_name_0_from_private_module_1: {
        code: 4042,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_public_property_getter_from_exported_class_has_or_is_using_name_0_from_private_module_4042",
        message: "Return type of public property getter from exported class has or is using name '{0}' from private module '{1}'."
      },
      Return_type_of_public_property_getter_from_exported_class_has_or_is_using_private_name_0: {
        code: 4043,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_public_property_getter_from_exported_class_has_or_is_using_private_name_0_4043",
        message: "Return type of public property getter from exported class has or is using private name '{0}'."
      },
      Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1: {
        code: 4044,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_name_0_from_private_mod_4044",
        message: "Return type of constructor signature from exported interface has or is using name '{0}' from private module '{1}'."
      },
      Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_0: {
        code: 4045,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_0_4045",
        message: "Return type of constructor signature from exported interface has or is using private name '{0}'."
      },
      Return_type_of_call_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1: {
        code: 4046,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_call_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1_4046",
        message: "Return type of call signature from exported interface has or is using name '{0}' from private module '{1}'."
      },
      Return_type_of_call_signature_from_exported_interface_has_or_is_using_private_name_0: {
        code: 4047,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_call_signature_from_exported_interface_has_or_is_using_private_name_0_4047",
        message: "Return type of call signature from exported interface has or is using private name '{0}'."
      },
      Return_type_of_index_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1: {
        code: 4048,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_index_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1_4048",
        message: "Return type of index signature from exported interface has or is using name '{0}' from private module '{1}'."
      },
      Return_type_of_index_signature_from_exported_interface_has_or_is_using_private_name_0: {
        code: 4049,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_index_signature_from_exported_interface_has_or_is_using_private_name_0_4049",
        message: "Return type of index signature from exported interface has or is using private name '{0}'."
      },
      Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named: {
        code: 4050,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_external_module__4050",
        message: "Return type of public static method from exported class has or is using name '{0}' from external module {1} but cannot be named."
      },
      Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_private_module_1: {
        code: 4051,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_private_module_1_4051",
        message: "Return type of public static method from exported class has or is using name '{0}' from private module '{1}'."
      },
      Return_type_of_public_static_method_from_exported_class_has_or_is_using_private_name_0: {
        code: 4052,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_public_static_method_from_exported_class_has_or_is_using_private_name_0_4052",
        message: "Return type of public static method from exported class has or is using private name '{0}'."
      },
      Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named: {
        code: 4053,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_c_4053",
        message: "Return type of public method from exported class has or is using name '{0}' from external module {1} but cannot be named."
      },
      Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_private_module_1: {
        code: 4054,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_private_module_1_4054",
        message: "Return type of public method from exported class has or is using name '{0}' from private module '{1}'."
      },
      Return_type_of_public_method_from_exported_class_has_or_is_using_private_name_0: {
        code: 4055,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_public_method_from_exported_class_has_or_is_using_private_name_0_4055",
        message: "Return type of public method from exported class has or is using private name '{0}'."
      },
      Return_type_of_method_from_exported_interface_has_or_is_using_name_0_from_private_module_1: {
        code: 4056,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_method_from_exported_interface_has_or_is_using_name_0_from_private_module_1_4056",
        message: "Return type of method from exported interface has or is using name '{0}' from private module '{1}'."
      },
      Return_type_of_method_from_exported_interface_has_or_is_using_private_name_0: {
        code: 4057,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_method_from_exported_interface_has_or_is_using_private_name_0_4057",
        message: "Return type of method from exported interface has or is using private name '{0}'."
      },
      Return_type_of_exported_function_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named: {
        code: 4058,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_exported_function_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named_4058",
        message: "Return type of exported function has or is using name '{0}' from external module {1} but cannot be named."
      },
      Return_type_of_exported_function_has_or_is_using_name_0_from_private_module_1: {
        code: 4059,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_exported_function_has_or_is_using_name_0_from_private_module_1_4059",
        message: "Return type of exported function has or is using name '{0}' from private module '{1}'."
      },
      Return_type_of_exported_function_has_or_is_using_private_name_0: {
        code: 4060,
        category: ts.DiagnosticCategory.Error,
        key: "Return_type_of_exported_function_has_or_is_using_private_name_0_4060",
        message: "Return type of exported function has or is using private name '{0}'."
      },
      Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: {
        code: 4061,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_can_4061",
        message: "Parameter '{0}' of constructor from exported class has or is using name '{1}' from external module {2} but cannot be named."
      },
      Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_private_module_2: {
        code: 4062,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_private_module_2_4062",
        message: "Parameter '{0}' of constructor from exported class has or is using name '{1}' from private module '{2}'."
      },
      Parameter_0_of_constructor_from_exported_class_has_or_is_using_private_name_1: {
        code: 4063,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_constructor_from_exported_class_has_or_is_using_private_name_1_4063",
        message: "Parameter '{0}' of constructor from exported class has or is using private name '{1}'."
      },
      Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2: {
        code: 4064,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_name_1_from_private_mod_4064",
        message: "Parameter '{0}' of constructor signature from exported interface has or is using name '{1}' from private module '{2}'."
      },
      Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1: {
        code: 4065,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1_4065",
        message: "Parameter '{0}' of constructor signature from exported interface has or is using private name '{1}'."
      },
      Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2: {
        code: 4066,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2_4066",
        message: "Parameter '{0}' of call signature from exported interface has or is using name '{1}' from private module '{2}'."
      },
      Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1: {
        code: 4067,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1_4067",
        message: "Parameter '{0}' of call signature from exported interface has or is using private name '{1}'."
      },
      Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: {
        code: 4068,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_external_module__4068",
        message: "Parameter '{0}' of public static method from exported class has or is using name '{1}' from external module {2} but cannot be named."
      },
      Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_private_module_2: {
        code: 4069,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_private_module_2_4069",
        message: "Parameter '{0}' of public static method from exported class has or is using name '{1}' from private module '{2}'."
      },
      Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1: {
        code: 4070,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1_4070",
        message: "Parameter '{0}' of public static method from exported class has or is using private name '{1}'."
      },
      Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: {
        code: 4071,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_c_4071",
        message: "Parameter '{0}' of public method from exported class has or is using name '{1}' from external module {2} but cannot be named."
      },
      Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_private_module_2: {
        code: 4072,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_private_module_2_4072",
        message: "Parameter '{0}' of public method from exported class has or is using name '{1}' from private module '{2}'."
      },
      Parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1: {
        code: 4073,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1_4073",
        message: "Parameter '{0}' of public method from exported class has or is using private name '{1}'."
      },
      Parameter_0_of_method_from_exported_interface_has_or_is_using_name_1_from_private_module_2: {
        code: 4074,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_method_from_exported_interface_has_or_is_using_name_1_from_private_module_2_4074",
        message: "Parameter '{0}' of method from exported interface has or is using name '{1}' from private module '{2}'."
      },
      Parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1: {
        code: 4075,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1_4075",
        message: "Parameter '{0}' of method from exported interface has or is using private name '{1}'."
      },
      Parameter_0_of_exported_function_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: {
        code: 4076,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_exported_function_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named_4076",
        message: "Parameter '{0}' of exported function has or is using name '{1}' from external module {2} but cannot be named."
      },
      Parameter_0_of_exported_function_has_or_is_using_name_1_from_private_module_2: {
        code: 4077,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_exported_function_has_or_is_using_name_1_from_private_module_2_4077",
        message: "Parameter '{0}' of exported function has or is using name '{1}' from private module '{2}'."
      },
      Parameter_0_of_exported_function_has_or_is_using_private_name_1: {
        code: 4078,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_of_exported_function_has_or_is_using_private_name_1_4078",
        message: "Parameter '{0}' of exported function has or is using private name '{1}'."
      },
      Exported_type_alias_0_has_or_is_using_private_name_1: {
        code: 4081,
        category: ts.DiagnosticCategory.Error,
        key: "Exported_type_alias_0_has_or_is_using_private_name_1_4081",
        message: "Exported type alias '{0}' has or is using private name '{1}'."
      },
      Default_export_of_the_module_has_or_is_using_private_name_0: {
        code: 4082,
        category: ts.DiagnosticCategory.Error,
        key: "Default_export_of_the_module_has_or_is_using_private_name_0_4082",
        message: "Default export of the module has or is using private name '{0}'."
      },
      The_current_host_does_not_support_the_0_option: {
        code: 5001,
        category: ts.DiagnosticCategory.Error,
        key: "The_current_host_does_not_support_the_0_option_5001",
        message: "The current host does not support the '{0}' option."
      },
      Cannot_find_the_common_subdirectory_path_for_the_input_files: {
        code: 5009,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_find_the_common_subdirectory_path_for_the_input_files_5009",
        message: "Cannot find the common subdirectory path for the input files."
      },
      Cannot_read_file_0_Colon_1: {
        code: 5012,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_read_file_0_Colon_1_5012",
        message: "Cannot read file '{0}': {1}"
      },
      Unsupported_file_encoding: {
        code: 5013,
        category: ts.DiagnosticCategory.Error,
        key: "Unsupported_file_encoding_5013",
        message: "Unsupported file encoding."
      },
      Failed_to_parse_file_0_Colon_1: {
        code: 5014,
        category: ts.DiagnosticCategory.Error,
        key: "Failed_to_parse_file_0_Colon_1_5014",
        message: "Failed to parse file '{0}': {1}."
      },
      Unknown_compiler_option_0: {
        code: 5023,
        category: ts.DiagnosticCategory.Error,
        key: "Unknown_compiler_option_0_5023",
        message: "Unknown compiler option '{0}'."
      },
      Compiler_option_0_requires_a_value_of_type_1: {
        code: 5024,
        category: ts.DiagnosticCategory.Error,
        key: "Compiler_option_0_requires_a_value_of_type_1_5024",
        message: "Compiler option '{0}' requires a value of type {1}."
      },
      Could_not_write_file_0_Colon_1: {
        code: 5033,
        category: ts.DiagnosticCategory.Error,
        key: "Could_not_write_file_0_Colon_1_5033",
        message: "Could not write file '{0}': {1}"
      },
      Option_project_cannot_be_mixed_with_source_files_on_a_command_line: {
        code: 5042,
        category: ts.DiagnosticCategory.Error,
        key: "Option_project_cannot_be_mixed_with_source_files_on_a_command_line_5042",
        message: "Option 'project' cannot be mixed with source files on a command line."
      },
      Option_isolatedModules_can_only_be_used_when_either_option_module_is_provided_or_option_target_is_ES2015_or_higher: {
        code: 5047,
        category: ts.DiagnosticCategory.Error,
        key: "Option_isolatedModules_can_only_be_used_when_either_option_module_is_provided_or_option_target_is_ES_5047",
        message: "Option 'isolatedModules' can only be used when either option '--module' is provided or option 'target' is 'ES2015' or higher."
      },
      Option_inlineSources_can_only_be_used_when_either_option_inlineSourceMap_or_option_sourceMap_is_provided: {
        code: 5051,
        category: ts.DiagnosticCategory.Error,
        key: "Option_inlineSources_can_only_be_used_when_either_option_inlineSourceMap_or_option_sourceMap_is_prov_5051",
        message: "Option 'inlineSources' can only be used when either option '--inlineSourceMap' or option '--sourceMap' is provided."
      },
      Option_0_cannot_be_specified_without_specifying_option_1: {
        code: 5052,
        category: ts.DiagnosticCategory.Error,
        key: "Option_0_cannot_be_specified_without_specifying_option_1_5052",
        message: "Option '{0}' cannot be specified without specifying option '{1}'."
      },
      Option_0_cannot_be_specified_with_option_1: {
        code: 5053,
        category: ts.DiagnosticCategory.Error,
        key: "Option_0_cannot_be_specified_with_option_1_5053",
        message: "Option '{0}' cannot be specified with option '{1}'."
      },
      A_tsconfig_json_file_is_already_defined_at_Colon_0: {
        code: 5054,
        category: ts.DiagnosticCategory.Error,
        key: "A_tsconfig_json_file_is_already_defined_at_Colon_0_5054",
        message: "A 'tsconfig.json' file is already defined at: '{0}'."
      },
      Cannot_write_file_0_because_it_would_overwrite_input_file: {
        code: 5055,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_write_file_0_because_it_would_overwrite_input_file_5055",
        message: "Cannot write file '{0}' because it would overwrite input file."
      },
      Cannot_write_file_0_because_it_would_be_overwritten_by_multiple_input_files: {
        code: 5056,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_write_file_0_because_it_would_be_overwritten_by_multiple_input_files_5056",
        message: "Cannot write file '{0}' because it would be overwritten by multiple input files."
      },
      Cannot_find_a_tsconfig_json_file_at_the_specified_directory_Colon_0: {
        code: 5057,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_find_a_tsconfig_json_file_at_the_specified_directory_Colon_0_5057",
        message: "Cannot find a tsconfig.json file at the specified directory: '{0}'"
      },
      The_specified_path_does_not_exist_Colon_0: {
        code: 5058,
        category: ts.DiagnosticCategory.Error,
        key: "The_specified_path_does_not_exist_Colon_0_5058",
        message: "The specified path does not exist: '{0}'"
      },
      Invalide_value_for_reactNamespace_0_is_not_a_valid_identifier: {
        code: 5059,
        category: ts.DiagnosticCategory.Error,
        key: "Invalide_value_for_reactNamespace_0_is_not_a_valid_identifier_5059",
        message: "Invalide value for '--reactNamespace'. '{0}' is not a valid identifier."
      },
      Concatenate_and_emit_output_to_single_file: {
        code: 6001,
        category: ts.DiagnosticCategory.Message,
        key: "Concatenate_and_emit_output_to_single_file_6001",
        message: "Concatenate and emit output to single file."
      },
      Generates_corresponding_d_ts_file: {
        code: 6002,
        category: ts.DiagnosticCategory.Message,
        key: "Generates_corresponding_d_ts_file_6002",
        message: "Generates corresponding '.d.ts' file."
      },
      Specifies_the_location_where_debugger_should_locate_map_files_instead_of_generated_locations: {
        code: 6003,
        category: ts.DiagnosticCategory.Message,
        key: "Specifies_the_location_where_debugger_should_locate_map_files_instead_of_generated_locations_6003",
        message: "Specifies the location where debugger should locate map files instead of generated locations."
      },
      Specifies_the_location_where_debugger_should_locate_TypeScript_files_instead_of_source_locations: {
        code: 6004,
        category: ts.DiagnosticCategory.Message,
        key: "Specifies_the_location_where_debugger_should_locate_TypeScript_files_instead_of_source_locations_6004",
        message: "Specifies the location where debugger should locate TypeScript files instead of source locations."
      },
      Watch_input_files: {
        code: 6005,
        category: ts.DiagnosticCategory.Message,
        key: "Watch_input_files_6005",
        message: "Watch input files."
      },
      Redirect_output_structure_to_the_directory: {
        code: 6006,
        category: ts.DiagnosticCategory.Message,
        key: "Redirect_output_structure_to_the_directory_6006",
        message: "Redirect output structure to the directory."
      },
      Do_not_erase_const_enum_declarations_in_generated_code: {
        code: 6007,
        category: ts.DiagnosticCategory.Message,
        key: "Do_not_erase_const_enum_declarations_in_generated_code_6007",
        message: "Do not erase const enum declarations in generated code."
      },
      Do_not_emit_outputs_if_any_errors_were_reported: {
        code: 6008,
        category: ts.DiagnosticCategory.Message,
        key: "Do_not_emit_outputs_if_any_errors_were_reported_6008",
        message: "Do not emit outputs if any errors were reported."
      },
      Do_not_emit_comments_to_output: {
        code: 6009,
        category: ts.DiagnosticCategory.Message,
        key: "Do_not_emit_comments_to_output_6009",
        message: "Do not emit comments to output."
      },
      Do_not_emit_outputs: {
        code: 6010,
        category: ts.DiagnosticCategory.Message,
        key: "Do_not_emit_outputs_6010",
        message: "Do not emit outputs."
      },
      Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typechecking: {
        code: 6011,
        category: ts.DiagnosticCategory.Message,
        key: "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011",
        message: "Allow default imports from modules with no default export. This does not affect code emit, just typechecking."
      },
      Specify_ECMAScript_target_version_Colon_ES3_default_ES5_or_ES2015_experimental: {
        code: 6015,
        category: ts.DiagnosticCategory.Message,
        key: "Specify_ECMAScript_target_version_Colon_ES3_default_ES5_or_ES2015_experimental_6015",
        message: "Specify ECMAScript target version: 'ES3' (default), 'ES5', or 'ES2015' (experimental)"
      },
      Specify_module_code_generation_Colon_commonjs_amd_system_umd_or_es2015: {
        code: 6016,
        category: ts.DiagnosticCategory.Message,
        key: "Specify_module_code_generation_Colon_commonjs_amd_system_umd_or_es2015_6016",
        message: "Specify module code generation: 'commonjs', 'amd', 'system', 'umd' or 'es2015'"
      },
      Print_this_message: {
        code: 6017,
        category: ts.DiagnosticCategory.Message,
        key: "Print_this_message_6017",
        message: "Print this message."
      },
      Print_the_compiler_s_version: {
        code: 6019,
        category: ts.DiagnosticCategory.Message,
        key: "Print_the_compiler_s_version_6019",
        message: "Print the compiler's version."
      },
      Compile_the_project_in_the_given_directory: {
        code: 6020,
        category: ts.DiagnosticCategory.Message,
        key: "Compile_the_project_in_the_given_directory_6020",
        message: "Compile the project in the given directory."
      },
      Syntax_Colon_0: {
        code: 6023,
        category: ts.DiagnosticCategory.Message,
        key: "Syntax_Colon_0_6023",
        message: "Syntax: {0}"
      },
      options: {
        code: 6024,
        category: ts.DiagnosticCategory.Message,
        key: "options_6024",
        message: "options"
      },
      file: {
        code: 6025,
        category: ts.DiagnosticCategory.Message,
        key: "file_6025",
        message: "file"
      },
      Examples_Colon_0: {
        code: 6026,
        category: ts.DiagnosticCategory.Message,
        key: "Examples_Colon_0_6026",
        message: "Examples: {0}"
      },
      Options_Colon: {
        code: 6027,
        category: ts.DiagnosticCategory.Message,
        key: "Options_Colon_6027",
        message: "Options:"
      },
      Version_0: {
        code: 6029,
        category: ts.DiagnosticCategory.Message,
        key: "Version_0_6029",
        message: "Version {0}"
      },
      Insert_command_line_options_and_files_from_a_file: {
        code: 6030,
        category: ts.DiagnosticCategory.Message,
        key: "Insert_command_line_options_and_files_from_a_file_6030",
        message: "Insert command line options and files from a file."
      },
      File_change_detected_Starting_incremental_compilation: {
        code: 6032,
        category: ts.DiagnosticCategory.Message,
        key: "File_change_detected_Starting_incremental_compilation_6032",
        message: "File change detected. Starting incremental compilation..."
      },
      KIND: {
        code: 6034,
        category: ts.DiagnosticCategory.Message,
        key: "KIND_6034",
        message: "KIND"
      },
      FILE: {
        code: 6035,
        category: ts.DiagnosticCategory.Message,
        key: "FILE_6035",
        message: "FILE"
      },
      VERSION: {
        code: 6036,
        category: ts.DiagnosticCategory.Message,
        key: "VERSION_6036",
        message: "VERSION"
      },
      LOCATION: {
        code: 6037,
        category: ts.DiagnosticCategory.Message,
        key: "LOCATION_6037",
        message: "LOCATION"
      },
      DIRECTORY: {
        code: 6038,
        category: ts.DiagnosticCategory.Message,
        key: "DIRECTORY_6038",
        message: "DIRECTORY"
      },
      Compilation_complete_Watching_for_file_changes: {
        code: 6042,
        category: ts.DiagnosticCategory.Message,
        key: "Compilation_complete_Watching_for_file_changes_6042",
        message: "Compilation complete. Watching for file changes."
      },
      Generates_corresponding_map_file: {
        code: 6043,
        category: ts.DiagnosticCategory.Message,
        key: "Generates_corresponding_map_file_6043",
        message: "Generates corresponding '.map' file."
      },
      Compiler_option_0_expects_an_argument: {
        code: 6044,
        category: ts.DiagnosticCategory.Error,
        key: "Compiler_option_0_expects_an_argument_6044",
        message: "Compiler option '{0}' expects an argument."
      },
      Unterminated_quoted_string_in_response_file_0: {
        code: 6045,
        category: ts.DiagnosticCategory.Error,
        key: "Unterminated_quoted_string_in_response_file_0_6045",
        message: "Unterminated quoted string in response file '{0}'."
      },
      Argument_for_module_option_must_be_commonjs_amd_system_umd_es2015_or_none: {
        code: 6046,
        category: ts.DiagnosticCategory.Error,
        key: "Argument_for_module_option_must_be_commonjs_amd_system_umd_es2015_or_none_6046",
        message: "Argument for '--module' option must be 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'none'."
      },
      Argument_for_target_option_must_be_ES3_ES5_or_ES2015: {
        code: 6047,
        category: ts.DiagnosticCategory.Error,
        key: "Argument_for_target_option_must_be_ES3_ES5_or_ES2015_6047",
        message: "Argument for '--target' option must be 'ES3', 'ES5', or 'ES2015'."
      },
      Locale_must_be_of_the_form_language_or_language_territory_For_example_0_or_1: {
        code: 6048,
        category: ts.DiagnosticCategory.Error,
        key: "Locale_must_be_of_the_form_language_or_language_territory_For_example_0_or_1_6048",
        message: "Locale must be of the form <language> or <language>-<territory>. For example '{0}' or '{1}'."
      },
      Unsupported_locale_0: {
        code: 6049,
        category: ts.DiagnosticCategory.Error,
        key: "Unsupported_locale_0_6049",
        message: "Unsupported locale '{0}'."
      },
      Unable_to_open_file_0: {
        code: 6050,
        category: ts.DiagnosticCategory.Error,
        key: "Unable_to_open_file_0_6050",
        message: "Unable to open file '{0}'."
      },
      Corrupted_locale_file_0: {
        code: 6051,
        category: ts.DiagnosticCategory.Error,
        key: "Corrupted_locale_file_0_6051",
        message: "Corrupted locale file {0}."
      },
      Raise_error_on_expressions_and_declarations_with_an_implied_any_type: {
        code: 6052,
        category: ts.DiagnosticCategory.Message,
        key: "Raise_error_on_expressions_and_declarations_with_an_implied_any_type_6052",
        message: "Raise error on expressions and declarations with an implied 'any' type."
      },
      File_0_not_found: {
        code: 6053,
        category: ts.DiagnosticCategory.Error,
        key: "File_0_not_found_6053",
        message: "File '{0}' not found."
      },
      File_0_has_unsupported_extension_The_only_supported_extensions_are_1: {
        code: 6054,
        category: ts.DiagnosticCategory.Error,
        key: "File_0_has_unsupported_extension_The_only_supported_extensions_are_1_6054",
        message: "File '{0}' has unsupported extension. The only supported extensions are {1}."
      },
      Suppress_noImplicitAny_errors_for_indexing_objects_lacking_index_signatures: {
        code: 6055,
        category: ts.DiagnosticCategory.Message,
        key: "Suppress_noImplicitAny_errors_for_indexing_objects_lacking_index_signatures_6055",
        message: "Suppress noImplicitAny errors for indexing objects lacking index signatures."
      },
      Do_not_emit_declarations_for_code_that_has_an_internal_annotation: {
        code: 6056,
        category: ts.DiagnosticCategory.Message,
        key: "Do_not_emit_declarations_for_code_that_has_an_internal_annotation_6056",
        message: "Do not emit declarations for code that has an '@internal' annotation."
      },
      Specifies_the_root_directory_of_input_files_Use_to_control_the_output_directory_structure_with_outDir: {
        code: 6058,
        category: ts.DiagnosticCategory.Message,
        key: "Specifies_the_root_directory_of_input_files_Use_to_control_the_output_directory_structure_with_outDi_6058",
        message: "Specifies the root directory of input files. Use to control the output directory structure with --outDir."
      },
      File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files: {
        code: 6059,
        category: ts.DiagnosticCategory.Error,
        key: "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059",
        message: "File '{0}' is not under 'rootDir' '{1}'. 'rootDir' is expected to contain all source files."
      },
      Specifies_the_end_of_line_sequence_to_be_used_when_emitting_files_Colon_CRLF_dos_or_LF_unix: {
        code: 6060,
        category: ts.DiagnosticCategory.Message,
        key: "Specifies_the_end_of_line_sequence_to_be_used_when_emitting_files_Colon_CRLF_dos_or_LF_unix_6060",
        message: "Specifies the end of line sequence to be used when emitting files: 'CRLF' (dos) or 'LF' (unix)."
      },
      NEWLINE: {
        code: 6061,
        category: ts.DiagnosticCategory.Message,
        key: "NEWLINE_6061",
        message: "NEWLINE"
      },
      Argument_for_newLine_option_must_be_CRLF_or_LF: {
        code: 6062,
        category: ts.DiagnosticCategory.Error,
        key: "Argument_for_newLine_option_must_be_CRLF_or_LF_6062",
        message: "Argument for '--newLine' option must be 'CRLF' or 'LF'."
      },
      Argument_for_moduleResolution_option_must_be_node_or_classic: {
        code: 6063,
        category: ts.DiagnosticCategory.Error,
        key: "Argument_for_moduleResolution_option_must_be_node_or_classic_6063",
        message: "Argument for '--moduleResolution' option must be 'node' or 'classic'."
      },
      Enables_experimental_support_for_ES7_decorators: {
        code: 6065,
        category: ts.DiagnosticCategory.Message,
        key: "Enables_experimental_support_for_ES7_decorators_6065",
        message: "Enables experimental support for ES7 decorators."
      },
      Enables_experimental_support_for_emitting_type_metadata_for_decorators: {
        code: 6066,
        category: ts.DiagnosticCategory.Message,
        key: "Enables_experimental_support_for_emitting_type_metadata_for_decorators_6066",
        message: "Enables experimental support for emitting type metadata for decorators."
      },
      Enables_experimental_support_for_ES7_async_functions: {
        code: 6068,
        category: ts.DiagnosticCategory.Message,
        key: "Enables_experimental_support_for_ES7_async_functions_6068",
        message: "Enables experimental support for ES7 async functions."
      },
      Specifies_module_resolution_strategy_Colon_node_Node_js_or_classic_TypeScript_pre_1_6: {
        code: 6069,
        category: ts.DiagnosticCategory.Message,
        key: "Specifies_module_resolution_strategy_Colon_node_Node_js_or_classic_TypeScript_pre_1_6_6069",
        message: "Specifies module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6)."
      },
      Initializes_a_TypeScript_project_and_creates_a_tsconfig_json_file: {
        code: 6070,
        category: ts.DiagnosticCategory.Message,
        key: "Initializes_a_TypeScript_project_and_creates_a_tsconfig_json_file_6070",
        message: "Initializes a TypeScript project and creates a tsconfig.json file."
      },
      Successfully_created_a_tsconfig_json_file: {
        code: 6071,
        category: ts.DiagnosticCategory.Message,
        key: "Successfully_created_a_tsconfig_json_file_6071",
        message: "Successfully created a tsconfig.json file."
      },
      Suppress_excess_property_checks_for_object_literals: {
        code: 6072,
        category: ts.DiagnosticCategory.Message,
        key: "Suppress_excess_property_checks_for_object_literals_6072",
        message: "Suppress excess property checks for object literals."
      },
      Stylize_errors_and_messages_using_color_and_context_experimental: {
        code: 6073,
        category: ts.DiagnosticCategory.Message,
        key: "Stylize_errors_and_messages_using_color_and_context_experimental_6073",
        message: "Stylize errors and messages using color and context. (experimental)"
      },
      Do_not_report_errors_on_unused_labels: {
        code: 6074,
        category: ts.DiagnosticCategory.Message,
        key: "Do_not_report_errors_on_unused_labels_6074",
        message: "Do not report errors on unused labels."
      },
      Report_error_when_not_all_code_paths_in_function_return_a_value: {
        code: 6075,
        category: ts.DiagnosticCategory.Message,
        key: "Report_error_when_not_all_code_paths_in_function_return_a_value_6075",
        message: "Report error when not all code paths in function return a value."
      },
      Report_errors_for_fallthrough_cases_in_switch_statement: {
        code: 6076,
        category: ts.DiagnosticCategory.Message,
        key: "Report_errors_for_fallthrough_cases_in_switch_statement_6076",
        message: "Report errors for fallthrough cases in switch statement."
      },
      Do_not_report_errors_on_unreachable_code: {
        code: 6077,
        category: ts.DiagnosticCategory.Message,
        key: "Do_not_report_errors_on_unreachable_code_6077",
        message: "Do not report errors on unreachable code."
      },
      Disallow_inconsistently_cased_references_to_the_same_file: {
        code: 6078,
        category: ts.DiagnosticCategory.Message,
        key: "Disallow_inconsistently_cased_references_to_the_same_file_6078",
        message: "Disallow inconsistently-cased references to the same file."
      },
      Specify_JSX_code_generation_Colon_preserve_or_react: {
        code: 6080,
        category: ts.DiagnosticCategory.Message,
        key: "Specify_JSX_code_generation_Colon_preserve_or_react_6080",
        message: "Specify JSX code generation: 'preserve' or 'react'"
      },
      Argument_for_jsx_must_be_preserve_or_react: {
        code: 6081,
        category: ts.DiagnosticCategory.Message,
        key: "Argument_for_jsx_must_be_preserve_or_react_6081",
        message: "Argument for '--jsx' must be 'preserve' or 'react'."
      },
      Only_amd_and_system_modules_are_supported_alongside_0: {
        code: 6082,
        category: ts.DiagnosticCategory.Error,
        key: "Only_amd_and_system_modules_are_supported_alongside_0_6082",
        message: "Only 'amd' and 'system' modules are supported alongside --{0}."
      },
      Allow_javascript_files_to_be_compiled: {
        code: 6083,
        category: ts.DiagnosticCategory.Message,
        key: "Allow_javascript_files_to_be_compiled_6083",
        message: "Allow javascript files to be compiled."
      },
      Specifies_the_object_invoked_for_createElement_and_spread_when_targeting_react_JSX_emit: {
        code: 6084,
        category: ts.DiagnosticCategory.Message,
        key: "Specifies_the_object_invoked_for_createElement_and_spread_when_targeting_react_JSX_emit_6084",
        message: "Specifies the object invoked for createElement and __spread when targeting 'react' JSX emit"
      },
      Option_0_should_have_array_of_strings_as_a_value: {
        code: 6103,
        category: ts.DiagnosticCategory.Error,
        key: "Option_0_should_have_array_of_strings_as_a_value_6103",
        message: "Option '{0}' should have array of strings as a value."
      },
      Do_not_emit_use_strict_directives_in_module_output: {
        code: 6112,
        category: ts.DiagnosticCategory.Message,
        key: "Do_not_emit_use_strict_directives_in_module_output_6112",
        message: "Do not emit 'use strict' directives in module output."
      },
      Variable_0_implicitly_has_an_1_type: {
        code: 7005,
        category: ts.DiagnosticCategory.Error,
        key: "Variable_0_implicitly_has_an_1_type_7005",
        message: "Variable '{0}' implicitly has an '{1}' type."
      },
      Parameter_0_implicitly_has_an_1_type: {
        code: 7006,
        category: ts.DiagnosticCategory.Error,
        key: "Parameter_0_implicitly_has_an_1_type_7006",
        message: "Parameter '{0}' implicitly has an '{1}' type."
      },
      Member_0_implicitly_has_an_1_type: {
        code: 7008,
        category: ts.DiagnosticCategory.Error,
        key: "Member_0_implicitly_has_an_1_type_7008",
        message: "Member '{0}' implicitly has an '{1}' type."
      },
      new_expression_whose_target_lacks_a_construct_signature_implicitly_has_an_any_type: {
        code: 7009,
        category: ts.DiagnosticCategory.Error,
        key: "new_expression_whose_target_lacks_a_construct_signature_implicitly_has_an_any_type_7009",
        message: "'new' expression, whose target lacks a construct signature, implicitly has an 'any' type."
      },
      _0_which_lacks_return_type_annotation_implicitly_has_an_1_return_type: {
        code: 7010,
        category: ts.DiagnosticCategory.Error,
        key: "_0_which_lacks_return_type_annotation_implicitly_has_an_1_return_type_7010",
        message: "'{0}', which lacks return-type annotation, implicitly has an '{1}' return type."
      },
      Function_expression_which_lacks_return_type_annotation_implicitly_has_an_0_return_type: {
        code: 7011,
        category: ts.DiagnosticCategory.Error,
        key: "Function_expression_which_lacks_return_type_annotation_implicitly_has_an_0_return_type_7011",
        message: "Function expression, which lacks return-type annotation, implicitly has an '{0}' return type."
      },
      Construct_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type: {
        code: 7013,
        category: ts.DiagnosticCategory.Error,
        key: "Construct_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type_7013",
        message: "Construct signature, which lacks return-type annotation, implicitly has an 'any' return type."
      },
      Element_implicitly_has_an_any_type_because_index_expression_is_not_of_type_number: {
        code: 7015,
        category: ts.DiagnosticCategory.Error,
        key: "Element_implicitly_has_an_any_type_because_index_expression_is_not_of_type_number_7015",
        message: "Element implicitly has an 'any' type because index expression is not of type 'number'."
      },
      Property_0_implicitly_has_type_any_because_its_set_accessor_lacks_a_type_annotation: {
        code: 7016,
        category: ts.DiagnosticCategory.Error,
        key: "Property_0_implicitly_has_type_any_because_its_set_accessor_lacks_a_type_annotation_7016",
        message: "Property '{0}' implicitly has type 'any', because its 'set' accessor lacks a type annotation."
      },
      Index_signature_of_object_type_implicitly_has_an_any_type: {
        code: 7017,
        category: ts.DiagnosticCategory.Error,
        key: "Index_signature_of_object_type_implicitly_has_an_any_type_7017",
        message: "Index signature of object type implicitly has an 'any' type."
      },
      Object_literal_s_property_0_implicitly_has_an_1_type: {
        code: 7018,
        category: ts.DiagnosticCategory.Error,
        key: "Object_literal_s_property_0_implicitly_has_an_1_type_7018",
        message: "Object literal's property '{0}' implicitly has an '{1}' type."
      },
      Rest_parameter_0_implicitly_has_an_any_type: {
        code: 7019,
        category: ts.DiagnosticCategory.Error,
        key: "Rest_parameter_0_implicitly_has_an_any_type_7019",
        message: "Rest parameter '{0}' implicitly has an 'any[]' type."
      },
      Call_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type: {
        code: 7020,
        category: ts.DiagnosticCategory.Error,
        key: "Call_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type_7020",
        message: "Call signature, which lacks return-type annotation, implicitly has an 'any' return type."
      },
      _0_implicitly_has_type_any_because_it_does_not_have_a_type_annotation_and_is_referenced_directly_or_indirectly_in_its_own_initializer: {
        code: 7022,
        category: ts.DiagnosticCategory.Error,
        key: "_0_implicitly_has_type_any_because_it_does_not_have_a_type_annotation_and_is_referenced_directly_or__7022",
        message: "'{0}' implicitly has type 'any' because it does not have a type annotation and is referenced directly or indirectly in its own initializer."
      },
      _0_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions: {
        code: 7023,
        category: ts.DiagnosticCategory.Error,
        key: "_0_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_reference_7023",
        message: "'{0}' implicitly has return type 'any' because it does not have a return type annotation and is referenced directly or indirectly in one of its return expressions."
      },
      Function_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions: {
        code: 7024,
        category: ts.DiagnosticCategory.Error,
        key: "Function_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_ref_7024",
        message: "Function implicitly has return type 'any' because it does not have a return type annotation and is referenced directly or indirectly in one of its return expressions."
      },
      Generator_implicitly_has_type_0_because_it_does_not_yield_any_values_Consider_supplying_a_return_type: {
        code: 7025,
        category: ts.DiagnosticCategory.Error,
        key: "Generator_implicitly_has_type_0_because_it_does_not_yield_any_values_Consider_supplying_a_return_typ_7025",
        message: "Generator implicitly has type '{0}' because it does not yield any values. Consider supplying a return type."
      },
      JSX_element_implicitly_has_type_any_because_no_interface_JSX_0_exists: {
        code: 7026,
        category: ts.DiagnosticCategory.Error,
        key: "JSX_element_implicitly_has_type_any_because_no_interface_JSX_0_exists_7026",
        message: "JSX element implicitly has type 'any' because no interface 'JSX.{0}' exists"
      },
      Unreachable_code_detected: {
        code: 7027,
        category: ts.DiagnosticCategory.Error,
        key: "Unreachable_code_detected_7027",
        message: "Unreachable code detected."
      },
      Unused_label: {
        code: 7028,
        category: ts.DiagnosticCategory.Error,
        key: "Unused_label_7028",
        message: "Unused label."
      },
      Fallthrough_case_in_switch: {
        code: 7029,
        category: ts.DiagnosticCategory.Error,
        key: "Fallthrough_case_in_switch_7029",
        message: "Fallthrough case in switch."
      },
      Not_all_code_paths_return_a_value: {
        code: 7030,
        category: ts.DiagnosticCategory.Error,
        key: "Not_all_code_paths_return_a_value_7030",
        message: "Not all code paths return a value."
      },
      You_cannot_rename_this_element: {
        code: 8000,
        category: ts.DiagnosticCategory.Error,
        key: "You_cannot_rename_this_element_8000",
        message: "You cannot rename this element."
      },
      You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library: {
        code: 8001,
        category: ts.DiagnosticCategory.Error,
        key: "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001",
        message: "You cannot rename elements that are defined in the standard TypeScript library."
      },
      import_can_only_be_used_in_a_ts_file: {
        code: 8002,
        category: ts.DiagnosticCategory.Error,
        key: "import_can_only_be_used_in_a_ts_file_8002",
        message: "'import ... =' can only be used in a .ts file."
      },
      export_can_only_be_used_in_a_ts_file: {
        code: 8003,
        category: ts.DiagnosticCategory.Error,
        key: "export_can_only_be_used_in_a_ts_file_8003",
        message: "'export=' can only be used in a .ts file."
      },
      type_parameter_declarations_can_only_be_used_in_a_ts_file: {
        code: 8004,
        category: ts.DiagnosticCategory.Error,
        key: "type_parameter_declarations_can_only_be_used_in_a_ts_file_8004",
        message: "'type parameter declarations' can only be used in a .ts file."
      },
      implements_clauses_can_only_be_used_in_a_ts_file: {
        code: 8005,
        category: ts.DiagnosticCategory.Error,
        key: "implements_clauses_can_only_be_used_in_a_ts_file_8005",
        message: "'implements clauses' can only be used in a .ts file."
      },
      interface_declarations_can_only_be_used_in_a_ts_file: {
        code: 8006,
        category: ts.DiagnosticCategory.Error,
        key: "interface_declarations_can_only_be_used_in_a_ts_file_8006",
        message: "'interface declarations' can only be used in a .ts file."
      },
      module_declarations_can_only_be_used_in_a_ts_file: {
        code: 8007,
        category: ts.DiagnosticCategory.Error,
        key: "module_declarations_can_only_be_used_in_a_ts_file_8007",
        message: "'module declarations' can only be used in a .ts file."
      },
      type_aliases_can_only_be_used_in_a_ts_file: {
        code: 8008,
        category: ts.DiagnosticCategory.Error,
        key: "type_aliases_can_only_be_used_in_a_ts_file_8008",
        message: "'type aliases' can only be used in a .ts file."
      },
      _0_can_only_be_used_in_a_ts_file: {
        code: 8009,
        category: ts.DiagnosticCategory.Error,
        key: "_0_can_only_be_used_in_a_ts_file_8009",
        message: "'{0}' can only be used in a .ts file."
      },
      types_can_only_be_used_in_a_ts_file: {
        code: 8010,
        category: ts.DiagnosticCategory.Error,
        key: "types_can_only_be_used_in_a_ts_file_8010",
        message: "'types' can only be used in a .ts file."
      },
      type_arguments_can_only_be_used_in_a_ts_file: {
        code: 8011,
        category: ts.DiagnosticCategory.Error,
        key: "type_arguments_can_only_be_used_in_a_ts_file_8011",
        message: "'type arguments' can only be used in a .ts file."
      },
      parameter_modifiers_can_only_be_used_in_a_ts_file: {
        code: 8012,
        category: ts.DiagnosticCategory.Error,
        key: "parameter_modifiers_can_only_be_used_in_a_ts_file_8012",
        message: "'parameter modifiers' can only be used in a .ts file."
      },
      property_declarations_can_only_be_used_in_a_ts_file: {
        code: 8014,
        category: ts.DiagnosticCategory.Error,
        key: "property_declarations_can_only_be_used_in_a_ts_file_8014",
        message: "'property declarations' can only be used in a .ts file."
      },
      enum_declarations_can_only_be_used_in_a_ts_file: {
        code: 8015,
        category: ts.DiagnosticCategory.Error,
        key: "enum_declarations_can_only_be_used_in_a_ts_file_8015",
        message: "'enum declarations' can only be used in a .ts file."
      },
      type_assertion_expressions_can_only_be_used_in_a_ts_file: {
        code: 8016,
        category: ts.DiagnosticCategory.Error,
        key: "type_assertion_expressions_can_only_be_used_in_a_ts_file_8016",
        message: "'type assertion expressions' can only be used in a .ts file."
      },
      Only_identifiers_Slashqualified_names_with_optional_type_arguments_are_currently_supported_in_a_class_extends_clauses: {
        code: 9002,
        category: ts.DiagnosticCategory.Error,
        key: "Only_identifiers_Slashqualified_names_with_optional_type_arguments_are_currently_supported_in_a_clas_9002",
        message: "Only identifiers/qualified-names with optional type arguments are currently supported in a class 'extends' clauses."
      },
      class_expressions_are_not_currently_supported: {
        code: 9003,
        category: ts.DiagnosticCategory.Error,
        key: "class_expressions_are_not_currently_supported_9003",
        message: "'class' expressions are not currently supported."
      },
      JSX_attributes_must_only_be_assigned_a_non_empty_expression: {
        code: 17000,
        category: ts.DiagnosticCategory.Error,
        key: "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000",
        message: "JSX attributes must only be assigned a non-empty 'expression'."
      },
      JSX_elements_cannot_have_multiple_attributes_with_the_same_name: {
        code: 17001,
        category: ts.DiagnosticCategory.Error,
        key: "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001",
        message: "JSX elements cannot have multiple attributes with the same name."
      },
      Expected_corresponding_JSX_closing_tag_for_0: {
        code: 17002,
        category: ts.DiagnosticCategory.Error,
        key: "Expected_corresponding_JSX_closing_tag_for_0_17002",
        message: "Expected corresponding JSX closing tag for '{0}'."
      },
      JSX_attribute_expected: {
        code: 17003,
        category: ts.DiagnosticCategory.Error,
        key: "JSX_attribute_expected_17003",
        message: "JSX attribute expected."
      },
      Cannot_use_JSX_unless_the_jsx_flag_is_provided: {
        code: 17004,
        category: ts.DiagnosticCategory.Error,
        key: "Cannot_use_JSX_unless_the_jsx_flag_is_provided_17004",
        message: "Cannot use JSX unless the '--jsx' flag is provided."
      },
      A_constructor_cannot_contain_a_super_call_when_its_class_extends_null: {
        code: 17005,
        category: ts.DiagnosticCategory.Error,
        key: "A_constructor_cannot_contain_a_super_call_when_its_class_extends_null_17005",
        message: "A constructor cannot contain a 'super' call when its class extends 'null'"
      },
      An_unary_expression_with_the_0_operator_is_not_allowed_in_the_left_hand_side_of_an_exponentiation_expression_Consider_enclosing_the_expression_in_parentheses: {
        code: 17006,
        category: ts.DiagnosticCategory.Error,
        key: "An_unary_expression_with_the_0_operator_is_not_allowed_in_the_left_hand_side_of_an_exponentiation_ex_17006",
        message: "An unary expression with the '{0}' operator is not allowed in the left-hand side of an exponentiation expression. Consider enclosing the expression in parentheses."
      },
      A_type_assertion_expression_is_not_allowed_in_the_left_hand_side_of_an_exponentiation_expression_Consider_enclosing_the_expression_in_parentheses: {
        code: 17007,
        category: ts.DiagnosticCategory.Error,
        key: "A_type_assertion_expression_is_not_allowed_in_the_left_hand_side_of_an_exponentiation_expression_Con_17007",
        message: "A type assertion expression is not allowed in the left-hand side of an exponentiation expression. Consider enclosing the expression in parentheses."
      },
      JSX_element_0_has_no_corresponding_closing_tag: {
        code: 17008,
        category: ts.DiagnosticCategory.Error,
        key: "JSX_element_0_has_no_corresponding_closing_tag_17008",
        message: "JSX element '{0}' has no corresponding closing tag."
      },
      super_must_be_called_before_accessing_this_in_the_constructor_of_a_derived_class: {
        code: 17009,
        category: ts.DiagnosticCategory.Error,
        key: "super_must_be_called_before_accessing_this_in_the_constructor_of_a_derived_class_17009",
        message: "'super' must be called before accessing 'this' in the constructor of a derived class."
      },
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        category: ts.DiagnosticCategory.Error,
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        category: ts.DiagnosticCategory.Error,
        key: "Too_many_JavaScript_files_in_the_project_Consider_specifying_the_exclude_setting_in_project_configur_17012",
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      }
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2703, 2705, 2707, 2728, 2730, 2736, 2738, 2739, 2741, 2745, 2748, 2757, 2759, 2761, 2763, 2765, 2768, 2768, 2784, 2787, 2790, 2799, 2817, 2819, 2821, 2828, 2831, 2832, 2835, 2856, 2858, 2864, 2866, 2867, 2869, 2873, 2876, 2884, 2887, 2888, 2891, 2893, 2902, 2903, 2908, 2909, 2911, 2915, 2918, 2927, 2929, 2929, 2946, 2947, 2949, 2954, 2958, 2960, 2962, 2965, 2969, 2970, 2972, 2972, 2974, 2975, 2979, 2980, 2984, 2986, 2990, 3001, 3006, 3010, 3014, 3016, 3018, 3021, 3024, 3024, 3031, 3031, 3046, 3055, 3073, 3075, 3077, 3084, 3086, 3088, 3090, 3112, 3114, 3123, 3125, 3129, 3133, 3140, 3142, 3144, 3146, 3149, 3157, 3158, 3160, 3161, 3168, 3171, 3174, 3183, 3202, 3203, 3205, 3212, 3214, 3216, 3218, 3240, 3242, 3251, 3253, 3257, 3260, 3268, 3270, 3272, 3274, 3277, 3285, 3286, 3294, 3294, 3296, 3299, 3302, 3311, 3313, 3314, 3330, 3331, 3333, 3340, 3342, 3344, 3346, 3386, 3389, 3396, 3398, 3400, 3402, 3406, 3415, 3415, 3424, 3427, 3430, 3439, 3450, 3455, 3458, 3459, 3461, 3478, 3482, 3505, 3507, 3515, 3517, 3517, 3520, 3526, 3530, 3530, 3535, 3540, 3542, 3542, 3544, 3551, 3570, 3571, 3585, 3642, 3648, 3662, 3664, 3673, 3713, 3714, 3716, 3716, 3719, 3720, 3722, 3722, 3725, 3725, 3732, 3735, 3737, 3743, 3745, 3747, 3749, 3749, 3751, 3751, 3754, 3755, 3757, 3769, 3771, 3773, 3776, 3780, 3782, 3782, 3784, 3789, 3792, 3801, 3804, 3807, 3840, 3840, 3864, 3865, 3872, 3881, 3893, 3893, 3895, 3895, 3897, 3897, 3902, 3911, 3913, 3948, 3953, 3972, 3974, 3991, 3993, 4028, 4038, 4038, 4096, 4169, 4176, 4253, 4256, 4293, 4295, 4295, 4301, 4301, 4304, 4346, 4348, 4680, 4682, 4685, 4688, 4694, 4696, 4696, 4698, 4701, 4704, 4744, 4746, 4749, 4752, 4784, 4786, 4789, 4792, 4798, 4800, 4800, 4802, 4805, 4808, 4822, 4824, 4880, 4882, 4885, 4888, 4954, 4957, 4959, 4992, 5007, 5024, 5108, 5121, 5740, 5743, 5759, 5761, 5786, 5792, 5866, 5870, 5872, 5888, 5900, 5902, 5908, 5920, 5940, 5952, 5971, 5984, 5996, 5998, 6000, 6002, 6003, 6016, 6099, 6103, 6103, 6108, 6109, 6112, 6121, 6155, 6157, 6160, 6169, 6176, 6263, 6272, 6314, 6320, 6389, 6400, 6428, 6432, 6443, 6448, 6459, 6470, 6509, 6512, 6516, 6528, 6571, 6576, 6601, 6608, 6617, 6656, 6683, 6688, 6750, 6752, 6780, 6783, 6793, 6800, 6809, 6823, 6823, 6912, 6987, 6992, 7001, 7019, 7027, 7040, 7155, 7168, 7223, 7232, 7241, 7245, 7293, 7376, 7378, 7380, 7414, 7424, 7654, 7676, 7957, 7960, 7965, 7968, 8005, 8008, 8013, 8016, 8023, 8025, 8025, 8027, 8027, 8029, 8029, 8031, 8061, 8064, 8116, 8118, 8124, 8126, 8126, 8130, 8132, 8134, 8140, 8144, 8147, 8150, 8155, 8160, 8172, 8178, 8180, 8182, 8188, 8204, 8205, 8255, 8256, 8276, 8276, 8305, 8305, 8319, 8319, 8336, 8348, 8400, 8412, 8417, 8417, 8421, 8432, 8450, 8450, 8455, 8455, 8458, 8467, 8469, 8469, 8473, 8477, 8484, 8484, 8486, 8486, 8488, 8488, 8490, 8493, 8495, 8505, 8508, 8511, 8517, 8521, 8526, 8526, 8544, 8584, 11264, 11310, 11312, 11358, 11360, 11492, 11499, 11507, 11520, 11557, 11559, 11559, 11565, 11565, 11568, 11623, 11631, 11631, 11647, 11670, 11680, 11686, 11688, 11694, 11696, 11702, 11704, 11710, 11712, 11718, 11720, 11726, 11728, 11734, 11736, 11742, 11744, 11775, 11823, 11823, 12293, 12295, 12321, 12335, 12337, 12341, 12344, 12348, 12353, 12438, 12441, 12442, 12445, 12447, 12449, 12538, 12540, 12543, 12549, 12589, 12593, 12686, 12704, 12730, 12784, 12799, 13312, 19893, 19968, 40908, 40960, 42124, 42192, 42237, 42240, 42508, 42512, 42539, 42560, 42607, 42612, 42621, 42623, 42647, 42655, 42737, 42775, 42783, 42786, 42888, 42891, 42894, 42896, 42899, 42912, 42922, 43000, 43047, 43072, 43123, 43136, 43204, 43216, 43225, 43232, 43255, 43259, 43259, 43264, 43309, 43312, 43347, 43360, 43388, 43392, 43456, 43471, 43481, 43520, 43574, 43584, 43597, 43600, 43609, 43616, 43638, 43642, 43643, 43648, 43714, 43739, 43741, 43744, 43759, 43762, 43766, 43777, 43782, 43785, 43790, 43793, 43798, 43808, 43814, 43816, 43822, 43968, 44010, 44012, 44013, 44016, 44025, 44032, 55203, 55216, 55238, 55243, 55291, 63744, 64109, 64112, 64217, 64256, 64262, 64275, 64279, 64285, 64296, 64298, 64310, 64312, 64316, 64318, 64318, 64320, 64321, 64323, 64324, 64326, 64433, 64467, 64829, 64848, 64911, 64914, 64967, 65008, 65019, 65024, 65039, 65056, 65062, 65075, 65076, 65101, 65103, 65136, 65140, 65142, 65276, 65296, 65305, 65313, 65338, 65343, 65343, 65345, 65370, 65382, 65470, 65474, 65479, 65482, 65487, 65490, 65495, 65498, 65500];
    function lookupInUnicodeMap(code, map) {
      if (code < map[0]) {
        return false;
      }
      var lo = 0;
      var hi = map.length;
      var mid;
      while (lo + 1 < hi) {
        mid = lo + (hi - lo) / 2;
        mid -= mid % 2;
        if (map[mid] <= code && code <= map[mid + 1]) {
          return true;
        }
        if (code < map[mid]) {
          hi = mid;
        } else {
          lo = mid + 2;
        }
      }
      return false;
    }
    function isUnicodeIdentifierStart(code, languageVersion) {
      return languageVersion >= 1 ? lookupInUnicodeMap(code, unicodeES5IdentifierStart) : lookupInUnicodeMap(code, unicodeES3IdentifierStart);
    }
    ts.isUnicodeIdentifierStart = isUnicodeIdentifierStart;
    function isUnicodeIdentifierPart(code, languageVersion) {
      return languageVersion >= 1 ? lookupInUnicodeMap(code, unicodeES5IdentifierPart) : lookupInUnicodeMap(code, unicodeES3IdentifierPart);
    }
    function makeReverseMap(source) {
      var result = [];
      for (var name_4 in source) {
        if (source.hasOwnProperty(name_4)) {
          result[source[name_4]] = name_4;
        }
      }
      return result;
    }
    var tokenStrings = makeReverseMap(textToToken);
    function tokenToString(t) {
      return tokenStrings[t];
    }
    ts.tokenToString = tokenToString;
    function stringToToken(s) {
      return textToToken[s];
    }
    ts.stringToToken = stringToToken;
    function computeLineStarts(text) {
      var result = new Array();
      var pos = 0;
      var lineStart = 0;
      while (pos < text.length) {
        var ch = text.charCodeAt(pos);
        pos++;
        switch (ch) {
          case 13:
            if (text.charCodeAt(pos) === 10) {
              pos++;
            }
          case 10:
            result.push(lineStart);
            lineStart = pos;
            break;
          default:
            if (ch > 127 && isLineBreak(ch)) {
              result.push(lineStart);
              lineStart = pos;
            }
            break;
        }
      }
      result.push(lineStart);
      return result;
    }
    ts.computeLineStarts = computeLineStarts;
    function getPositionOfLineAndCharacter(sourceFile, line, character) {
      return computePositionOfLineAndCharacter(getLineStarts(sourceFile), line, character);
    }
    ts.getPositionOfLineAndCharacter = getPositionOfLineAndCharacter;
    function computePositionOfLineAndCharacter(lineStarts, line, character) {
      ts.Debug.assert(line >= 0 && line < lineStarts.length);
      return lineStarts[line] + character;
    }
    ts.computePositionOfLineAndCharacter = computePositionOfLineAndCharacter;
    function getLineStarts(sourceFile) {
      return sourceFile.lineMap || (sourceFile.lineMap = computeLineStarts(sourceFile.text));
    }
    ts.getLineStarts = getLineStarts;
    function computeLineAndCharacterOfPosition(lineStarts, position) {
      var lineNumber = ts.binarySearch(lineStarts, position);
      if (lineNumber < 0) {
        lineNumber = ~lineNumber - 1;
        ts.Debug.assert(lineNumber !== -1, "position cannot precede the beginning of the file");
      }
      return {
        line: lineNumber,
        character: position - lineStarts[lineNumber]
      };
    }
    ts.computeLineAndCharacterOfPosition = computeLineAndCharacterOfPosition;
    function getLineAndCharacterOfPosition(sourceFile, position) {
      return computeLineAndCharacterOfPosition(getLineStarts(sourceFile), position);
    }
    ts.getLineAndCharacterOfPosition = getLineAndCharacterOfPosition;
    var hasOwnProperty = Object.prototype.hasOwnProperty;
    function isWhiteSpace(ch) {
      return ch === 32 || ch === 9 || ch === 11 || ch === 12 || ch === 160 || ch === 133 || ch === 5760 || ch >= 8192 && ch <= 8203 || ch === 8239 || ch === 8287 || ch === 12288 || ch === 65279;
    }
    ts.isWhiteSpace = isWhiteSpace;
    function isLineBreak(ch) {
      return ch === 10 || ch === 13 || ch === 8232 || ch === 8233;
    }
    ts.isLineBreak = isLineBreak;
    function isDigit(ch) {
      return ch >= 48 && ch <= 57;
    }
    function isOctalDigit(ch) {
      return ch >= 48 && ch <= 55;
    }
    ts.isOctalDigit = isOctalDigit;
    function couldStartTrivia(text, pos) {
      var ch = text.charCodeAt(pos);
      switch (ch) {
        case 13:
        case 10:
        case 9:
        case 11:
        case 12:
        case 32:
        case 47:
        case 60:
        case 61:
        case 62:
          return true;
        case 35:
          return pos === 0;
        default:
          return ch > 127;
      }
    }
    ts.couldStartTrivia = couldStartTrivia;
    function skipTrivia(text, pos, stopAfterLineBreak) {
      if (!(pos >= 0)) {
        return pos;
      }
      while (true) {
        var ch = text.charCodeAt(pos);
        switch (ch) {
          case 13:
            if (text.charCodeAt(pos + 1) === 10) {
              pos++;
            }
          case 10:
            pos++;
            if (stopAfterLineBreak) {
              return pos;
            }
            continue;
          case 9:
          case 11:
          case 12:
          case 32:
            pos++;
            continue;
          case 47:
            if (text.charCodeAt(pos + 1) === 47) {
              pos += 2;
              while (pos < text.length) {
                if (isLineBreak(text.charCodeAt(pos))) {
                  break;
                }
                pos++;
              }
              continue;
            }
            if (text.charCodeAt(pos + 1) === 42) {
              pos += 2;
              while (pos < text.length) {
                if (text.charCodeAt(pos) === 42 && text.charCodeAt(pos + 1) === 47) {
                  pos += 2;
                  break;
                }
                pos++;
              }
              continue;
            }
            break;
          case 60:
          case 61:
          case 62:
            if (isConflictMarkerTrivia(text, pos)) {
              pos = scanConflictMarkerTrivia(text, pos);
              continue;
            }
            break;
          case 35:
            if (pos === 0 && isShebangTrivia(text, pos)) {
              pos = scanShebangTrivia(text, pos);
              continue;
            }
            break;
          default:
            if (ch > 127 && (isWhiteSpace(ch) || isLineBreak(ch))) {
              pos++;
              continue;
            }
            break;
        }
        return pos;
      }
    }
    ts.skipTrivia = skipTrivia;
    var mergeConflictMarkerLength = "<<<<<<<".length;
    function isConflictMarkerTrivia(text, pos) {
      ts.Debug.assert(pos >= 0);
      if (pos === 0 || isLineBreak(text.charCodeAt(pos - 1))) {
        var ch = text.charCodeAt(pos);
        if ((pos + mergeConflictMarkerLength) < text.length) {
          for (var i = 0,
              n = mergeConflictMarkerLength; i < n; i++) {
            if (text.charCodeAt(pos + i) !== ch) {
              return false;
            }
          }
          return ch === 61 || text.charCodeAt(pos + mergeConflictMarkerLength) === 32;
        }
      }
      return false;
    }
    function scanConflictMarkerTrivia(text, pos, error) {
      if (error) {
        error(ts.Diagnostics.Merge_conflict_marker_encountered, mergeConflictMarkerLength);
      }
      var ch = text.charCodeAt(pos);
      var len = text.length;
      if (ch === 60 || ch === 62) {
        while (pos < len && !isLineBreak(text.charCodeAt(pos))) {
          pos++;
        }
      } else {
        ts.Debug.assert(ch === 61);
        while (pos < len) {
          var ch_1 = text.charCodeAt(pos);
          if (ch_1 === 62 && isConflictMarkerTrivia(text, pos)) {
            break;
          }
          pos++;
        }
      }
      return pos;
    }
    var shebangTriviaRegex = /^#!.*/;
    function isShebangTrivia(text, pos) {
      ts.Debug.assert(pos === 0);
      return shebangTriviaRegex.test(text);
    }
    function scanShebangTrivia(text, pos) {
      var shebang = shebangTriviaRegex.exec(text)[0];
      pos = pos + shebang.length;
      return pos;
    }
    function getCommentRanges(text, pos, trailing) {
      var result;
      var collecting = trailing || pos === 0;
      while (pos < text.length) {
        var ch = text.charCodeAt(pos);
        switch (ch) {
          case 13:
            if (text.charCodeAt(pos + 1) === 10) {
              pos++;
            }
          case 10:
            pos++;
            if (trailing) {
              return result;
            }
            collecting = true;
            if (result && result.length) {
              ts.lastOrUndefined(result).hasTrailingNewLine = true;
            }
            continue;
          case 9:
          case 11:
          case 12:
          case 32:
            pos++;
            continue;
          case 47:
            var nextChar = text.charCodeAt(pos + 1);
            var hasTrailingNewLine = false;
            if (nextChar === 47 || nextChar === 42) {
              var kind = nextChar === 47 ? 2 : 3;
              var startPos = pos;
              pos += 2;
              if (nextChar === 47) {
                while (pos < text.length) {
                  if (isLineBreak(text.charCodeAt(pos))) {
                    hasTrailingNewLine = true;
                    break;
                  }
                  pos++;
                }
              } else {
                while (pos < text.length) {
                  if (text.charCodeAt(pos) === 42 && text.charCodeAt(pos + 1) === 47) {
                    pos += 2;
                    break;
                  }
                  pos++;
                }
              }
              if (collecting) {
                if (!result) {
                  result = [];
                }
                result.push({
                  pos: startPos,
                  end: pos,
                  hasTrailingNewLine: hasTrailingNewLine,
                  kind: kind
                });
              }
              continue;
            }
            break;
          default:
            if (ch > 127 && (isWhiteSpace(ch) || isLineBreak(ch))) {
              if (result && result.length && isLineBreak(ch)) {
                ts.lastOrUndefined(result).hasTrailingNewLine = true;
              }
              pos++;
              continue;
            }
            break;
        }
        return result;
      }
      return result;
    }
    function getLeadingCommentRanges(text, pos) {
      return getCommentRanges(text, pos, false);
    }
    ts.getLeadingCommentRanges = getLeadingCommentRanges;
    function getTrailingCommentRanges(text, pos) {
      return getCommentRanges(text, pos, true);
    }
    ts.getTrailingCommentRanges = getTrailingCommentRanges;
    function getShebang(text) {
      return shebangTriviaRegex.test(text) ? shebangTriviaRegex.exec(text)[0] : undefined;
    }
    ts.getShebang = getShebang;
    function isIdentifierStart(ch, languageVersion) {
      return ch >= 65 && ch <= 90 || ch >= 97 && ch <= 122 || ch === 36 || ch === 95 || ch > 127 && isUnicodeIdentifierStart(ch, languageVersion);
    }
    ts.isIdentifierStart = isIdentifierStart;
    function isIdentifierPart(ch, languageVersion) {
      return ch >= 65 && ch <= 90 || ch >= 97 && ch <= 122 || ch >= 48 && ch <= 57 || ch === 36 || ch === 95 || ch > 127 && isUnicodeIdentifierPart(ch, languageVersion);
    }
    ts.isIdentifierPart = isIdentifierPart;
    function isIdentifier(name, languageVersion) {
      if (!isIdentifierStart(name.charCodeAt(0), languageVersion)) {
        return false;
      }
      for (var i = 1,
          n = name.length; i < n; i++) {
        if (!isIdentifierPart(name.charCodeAt(i), languageVersion)) {
          return false;
        }
      }
      return true;
    }
    ts.isIdentifier = isIdentifier;
    function createScanner(languageVersion, skipTrivia, languageVariant, text, onError, start, length) {
      if (languageVariant === void 0) {
        languageVariant = 0;
      }
      var pos;
      var end;
      var startPos;
      var tokenPos;
      var token;
      var tokenValue;
      var precedingLineBreak;
      var hasExtendedUnicodeEscape;
      var tokenIsUnterminated;
      setText(text, start, length);
      return {
        getStartPos: function() {
          return startPos;
        },
        getTextPos: function() {
          return pos;
        },
        getToken: function() {
          return token;
        },
        getTokenPos: function() {
          return tokenPos;
        },
        getTokenText: function() {
          return text.substring(tokenPos, pos);
        },
        getTokenValue: function() {
          return tokenValue;
        },
        hasExtendedUnicodeEscape: function() {
          return hasExtendedUnicodeEscape;
        },
        hasPrecedingLineBreak: function() {
          return precedingLineBreak;
        },
        isIdentifier: function() {
          return token === 69 || token > 105;
        },
        isReservedWord: function() {
          return token >= 70 && token <= 105;
        },
        isUnterminated: function() {
          return tokenIsUnterminated;
        },
        reScanGreaterToken: reScanGreaterToken,
        reScanSlashToken: reScanSlashToken,
        reScanTemplateToken: reScanTemplateToken,
        scanJsxIdentifier: scanJsxIdentifier,
        reScanJsxToken: reScanJsxToken,
        scanJsxToken: scanJsxToken,
        scanJSDocToken: scanJSDocToken,
        scan: scan,
        setText: setText,
        setScriptTarget: setScriptTarget,
        setLanguageVariant: setLanguageVariant,
        setOnError: setOnError,
        setTextPos: setTextPos,
        tryScan: tryScan,
        lookAhead: lookAhead,
        scanRange: scanRange
      };
      function error(message, length) {
        if (onError) {
          onError(message, length || 0);
        }
      }
      function scanNumber() {
        var start = pos;
        while (isDigit(text.charCodeAt(pos)))
          pos++;
        if (text.charCodeAt(pos) === 46) {
          pos++;
          while (isDigit(text.charCodeAt(pos)))
            pos++;
        }
        var end = pos;
        if (text.charCodeAt(pos) === 69 || text.charCodeAt(pos) === 101) {
          pos++;
          if (text.charCodeAt(pos) === 43 || text.charCodeAt(pos) === 45)
            pos++;
          if (isDigit(text.charCodeAt(pos))) {
            pos++;
            while (isDigit(text.charCodeAt(pos)))
              pos++;
            end = pos;
          } else {
            error(ts.Diagnostics.Digit_expected);
          }
        }
        return "" + +(text.substring(start, end));
      }
      function scanOctalDigits() {
        var start = pos;
        while (isOctalDigit(text.charCodeAt(pos))) {
          pos++;
        }
        return +(text.substring(start, pos));
      }
      function scanExactNumberOfHexDigits(count) {
        return scanHexDigits(count, false);
      }
      function scanMinimumNumberOfHexDigits(count) {
        return scanHexDigits(count, true);
      }
      function scanHexDigits(minCount, scanAsManyAsPossible) {
        var digits = 0;
        var value = 0;
        while (digits < minCount || scanAsManyAsPossible) {
          var ch = text.charCodeAt(pos);
          if (ch >= 48 && ch <= 57) {
            value = value * 16 + ch - 48;
          } else if (ch >= 65 && ch <= 70) {
            value = value * 16 + ch - 65 + 10;
          } else if (ch >= 97 && ch <= 102) {
            value = value * 16 + ch - 97 + 10;
          } else {
            break;
          }
          pos++;
          digits++;
        }
        if (digits < minCount) {
          value = -1;
        }
        return value;
      }
      function scanString() {
        var quote = text.charCodeAt(pos);
        pos++;
        var result = "";
        var start = pos;
        while (true) {
          if (pos >= end) {
            result += text.substring(start, pos);
            tokenIsUnterminated = true;
            error(ts.Diagnostics.Unterminated_string_literal);
            break;
          }
          var ch = text.charCodeAt(pos);
          if (ch === quote) {
            result += text.substring(start, pos);
            pos++;
            break;
          }
          if (ch === 92) {
            result += text.substring(start, pos);
            result += scanEscapeSequence();
            start = pos;
            continue;
          }
          if (isLineBreak(ch)) {
            result += text.substring(start, pos);
            tokenIsUnterminated = true;
            error(ts.Diagnostics.Unterminated_string_literal);
            break;
          }
          pos++;
        }
        return result;
      }
      function scanTemplateAndSetTokenValue() {
        var startedWithBacktick = text.charCodeAt(pos) === 96;
        pos++;
        var start = pos;
        var contents = "";
        var resultingToken;
        while (true) {
          if (pos >= end) {
            contents += text.substring(start, pos);
            tokenIsUnterminated = true;
            error(ts.Diagnostics.Unterminated_template_literal);
            resultingToken = startedWithBacktick ? 11 : 14;
            break;
          }
          var currChar = text.charCodeAt(pos);
          if (currChar === 96) {
            contents += text.substring(start, pos);
            pos++;
            resultingToken = startedWithBacktick ? 11 : 14;
            break;
          }
          if (currChar === 36 && pos + 1 < end && text.charCodeAt(pos + 1) === 123) {
            contents += text.substring(start, pos);
            pos += 2;
            resultingToken = startedWithBacktick ? 12 : 13;
            break;
          }
          if (currChar === 92) {
            contents += text.substring(start, pos);
            contents += scanEscapeSequence();
            start = pos;
            continue;
          }
          if (currChar === 13) {
            contents += text.substring(start, pos);
            pos++;
            if (pos < end && text.charCodeAt(pos) === 10) {
              pos++;
            }
            contents += "\n";
            start = pos;
            continue;
          }
          pos++;
        }
        ts.Debug.assert(resultingToken !== undefined);
        tokenValue = contents;
        return resultingToken;
      }
      function scanEscapeSequence() {
        pos++;
        if (pos >= end) {
          error(ts.Diagnostics.Unexpected_end_of_text);
          return "";
        }
        var ch = text.charCodeAt(pos);
        pos++;
        switch (ch) {
          case 48:
            return "\0";
          case 98:
            return "\b";
          case 116:
            return "\t";
          case 110:
            return "\n";
          case 118:
            return "\v";
          case 102:
            return "\f";
          case 114:
            return "\r";
          case 39:
            return "\'";
          case 34:
            return "\"";
          case 117:
            if (pos < end && text.charCodeAt(pos) === 123) {
              hasExtendedUnicodeEscape = true;
              pos++;
              return scanExtendedUnicodeEscape();
            }
            return scanHexadecimalEscape(4);
          case 120:
            return scanHexadecimalEscape(2);
          case 13:
            if (pos < end && text.charCodeAt(pos) === 10) {
              pos++;
            }
          case 10:
          case 8232:
          case 8233:
            return "";
          default:
            return String.fromCharCode(ch);
        }
      }
      function scanHexadecimalEscape(numDigits) {
        var escapedValue = scanExactNumberOfHexDigits(numDigits);
        if (escapedValue >= 0) {
          return String.fromCharCode(escapedValue);
        } else {
          error(ts.Diagnostics.Hexadecimal_digit_expected);
          return "";
        }
      }
      function scanExtendedUnicodeEscape() {
        var escapedValue = scanMinimumNumberOfHexDigits(1);
        var isInvalidExtendedEscape = false;
        if (escapedValue < 0) {
          error(ts.Diagnostics.Hexadecimal_digit_expected);
          isInvalidExtendedEscape = true;
        } else if (escapedValue > 0x10FFFF) {
          error(ts.Diagnostics.An_extended_Unicode_escape_value_must_be_between_0x0_and_0x10FFFF_inclusive);
          isInvalidExtendedEscape = true;
        }
        if (pos >= end) {
          error(ts.Diagnostics.Unexpected_end_of_text);
          isInvalidExtendedEscape = true;
        } else if (text.charCodeAt(pos) === 125) {
          pos++;
        } else {
          error(ts.Diagnostics.Unterminated_Unicode_escape_sequence);
          isInvalidExtendedEscape = true;
        }
        if (isInvalidExtendedEscape) {
          return "";
        }
        return utf16EncodeAsString(escapedValue);
      }
      function utf16EncodeAsString(codePoint) {
        ts.Debug.assert(0x0 <= codePoint && codePoint <= 0x10FFFF);
        if (codePoint <= 65535) {
          return String.fromCharCode(codePoint);
        }
        var codeUnit1 = Math.floor((codePoint - 65536) / 1024) + 0xD800;
        var codeUnit2 = ((codePoint - 65536) % 1024) + 0xDC00;
        return String.fromCharCode(codeUnit1, codeUnit2);
      }
      function peekUnicodeEscape() {
        if (pos + 5 < end && text.charCodeAt(pos + 1) === 117) {
          var start_1 = pos;
          pos += 2;
          var value = scanExactNumberOfHexDigits(4);
          pos = start_1;
          return value;
        }
        return -1;
      }
      function scanIdentifierParts() {
        var result = "";
        var start = pos;
        while (pos < end) {
          var ch = text.charCodeAt(pos);
          if (isIdentifierPart(ch, languageVersion)) {
            pos++;
          } else if (ch === 92) {
            ch = peekUnicodeEscape();
            if (!(ch >= 0 && isIdentifierPart(ch, languageVersion))) {
              break;
            }
            result += text.substring(start, pos);
            result += String.fromCharCode(ch);
            pos += 6;
            start = pos;
          } else {
            break;
          }
        }
        result += text.substring(start, pos);
        return result;
      }
      function getIdentifierToken() {
        var len = tokenValue.length;
        if (len >= 2 && len <= 11) {
          var ch = tokenValue.charCodeAt(0);
          if (ch >= 97 && ch <= 122 && hasOwnProperty.call(textToToken, tokenValue)) {
            return token = textToToken[tokenValue];
          }
        }
        return token = 69;
      }
      function scanBinaryOrOctalDigits(base) {
        ts.Debug.assert(base !== 2 || base !== 8, "Expected either base 2 or base 8");
        var value = 0;
        var numberOfDigits = 0;
        while (true) {
          var ch = text.charCodeAt(pos);
          var valueOfCh = ch - 48;
          if (!isDigit(ch) || valueOfCh >= base) {
            break;
          }
          value = value * base + valueOfCh;
          pos++;
          numberOfDigits++;
        }
        if (numberOfDigits === 0) {
          return -1;
        }
        return value;
      }
      function scan() {
        startPos = pos;
        hasExtendedUnicodeEscape = false;
        precedingLineBreak = false;
        tokenIsUnterminated = false;
        while (true) {
          tokenPos = pos;
          if (pos >= end) {
            return token = 1;
          }
          var ch = text.charCodeAt(pos);
          if (ch === 35 && pos === 0 && isShebangTrivia(text, pos)) {
            pos = scanShebangTrivia(text, pos);
            if (skipTrivia) {
              continue;
            } else {
              return token = 6;
            }
          }
          switch (ch) {
            case 10:
            case 13:
              precedingLineBreak = true;
              if (skipTrivia) {
                pos++;
                continue;
              } else {
                if (ch === 13 && pos + 1 < end && text.charCodeAt(pos + 1) === 10) {
                  pos += 2;
                } else {
                  pos++;
                }
                return token = 4;
              }
            case 9:
            case 11:
            case 12:
            case 32:
              if (skipTrivia) {
                pos++;
                continue;
              } else {
                while (pos < end && isWhiteSpace(text.charCodeAt(pos))) {
                  pos++;
                }
                return token = 5;
              }
            case 33:
              if (text.charCodeAt(pos + 1) === 61) {
                if (text.charCodeAt(pos + 2) === 61) {
                  return pos += 3, token = 33;
                }
                return pos += 2, token = 31;
              }
              pos++;
              return token = 49;
            case 34:
            case 39:
              tokenValue = scanString();
              return token = 9;
            case 96:
              return token = scanTemplateAndSetTokenValue();
            case 37:
              if (text.charCodeAt(pos + 1) === 61) {
                return pos += 2, token = 62;
              }
              pos++;
              return token = 40;
            case 38:
              if (text.charCodeAt(pos + 1) === 38) {
                return pos += 2, token = 51;
              }
              if (text.charCodeAt(pos + 1) === 61) {
                return pos += 2, token = 66;
              }
              pos++;
              return token = 46;
            case 40:
              pos++;
              return token = 17;
            case 41:
              pos++;
              return token = 18;
            case 42:
              if (text.charCodeAt(pos + 1) === 61) {
                return pos += 2, token = 59;
              }
              if (text.charCodeAt(pos + 1) === 42) {
                if (text.charCodeAt(pos + 2) === 61) {
                  return pos += 3, token = 60;
                }
                return pos += 2, token = 38;
              }
              pos++;
              return token = 37;
            case 43:
              if (text.charCodeAt(pos + 1) === 43) {
                return pos += 2, token = 41;
              }
              if (text.charCodeAt(pos + 1) === 61) {
                return pos += 2, token = 57;
              }
              pos++;
              return token = 35;
            case 44:
              pos++;
              return token = 24;
            case 45:
              if (text.charCodeAt(pos + 1) === 45) {
                return pos += 2, token = 42;
              }
              if (text.charCodeAt(pos + 1) === 61) {
                return pos += 2, token = 58;
              }
              pos++;
              return token = 36;
            case 46:
              if (isDigit(text.charCodeAt(pos + 1))) {
                tokenValue = scanNumber();
                return token = 8;
              }
              if (text.charCodeAt(pos + 1) === 46 && text.charCodeAt(pos + 2) === 46) {
                return pos += 3, token = 22;
              }
              pos++;
              return token = 21;
            case 47:
              if (text.charCodeAt(pos + 1) === 47) {
                pos += 2;
                while (pos < end) {
                  if (isLineBreak(text.charCodeAt(pos))) {
                    break;
                  }
                  pos++;
                }
                if (skipTrivia) {
                  continue;
                } else {
                  return token = 2;
                }
              }
              if (text.charCodeAt(pos + 1) === 42) {
                pos += 2;
                var commentClosed = false;
                while (pos < end) {
                  var ch_2 = text.charCodeAt(pos);
                  if (ch_2 === 42 && text.charCodeAt(pos + 1) === 47) {
                    pos += 2;
                    commentClosed = true;
                    break;
                  }
                  if (isLineBreak(ch_2)) {
                    precedingLineBreak = true;
                  }
                  pos++;
                }
                if (!commentClosed) {
                  error(ts.Diagnostics.Asterisk_Slash_expected);
                }
                if (skipTrivia) {
                  continue;
                } else {
                  tokenIsUnterminated = !commentClosed;
                  return token = 3;
                }
              }
              if (text.charCodeAt(pos + 1) === 61) {
                return pos += 2, token = 61;
              }
              pos++;
              return token = 39;
            case 48:
              if (pos + 2 < end && (text.charCodeAt(pos + 1) === 88 || text.charCodeAt(pos + 1) === 120)) {
                pos += 2;
                var value = scanMinimumNumberOfHexDigits(1);
                if (value < 0) {
                  error(ts.Diagnostics.Hexadecimal_digit_expected);
                  value = 0;
                }
                tokenValue = "" + value;
                return token = 8;
              } else if (pos + 2 < end && (text.charCodeAt(pos + 1) === 66 || text.charCodeAt(pos + 1) === 98)) {
                pos += 2;
                var value = scanBinaryOrOctalDigits(2);
                if (value < 0) {
                  error(ts.Diagnostics.Binary_digit_expected);
                  value = 0;
                }
                tokenValue = "" + value;
                return token = 8;
              } else if (pos + 2 < end && (text.charCodeAt(pos + 1) === 79 || text.charCodeAt(pos + 1) === 111)) {
                pos += 2;
                var value = scanBinaryOrOctalDigits(8);
                if (value < 0) {
                  error(ts.Diagnostics.Octal_digit_expected);
                  value = 0;
                }
                tokenValue = "" + value;
                return token = 8;
              }
              if (pos + 1 < end && isOctalDigit(text.charCodeAt(pos + 1))) {
                tokenValue = "" + scanOctalDigits();
                return token = 8;
              }
            case 49:
            case 50:
            case 51:
            case 52:
            case 53:
            case 54:
            case 55:
            case 56:
            case 57:
              tokenValue = scanNumber();
              return token = 8;
            case 58:
              pos++;
              return token = 54;
            case 59:
              pos++;
              return token = 23;
            case 60:
              if (isConflictMarkerTrivia(text, pos)) {
                pos = scanConflictMarkerTrivia(text, pos, error);
                if (skipTrivia) {
                  continue;
                } else {
                  return token = 7;
                }
              }
              if (text.charCodeAt(pos + 1) === 60) {
                if (text.charCodeAt(pos + 2) === 61) {
                  return pos += 3, token = 63;
                }
                return pos += 2, token = 43;
              }
              if (text.charCodeAt(pos + 1) === 61) {
                return pos += 2, token = 28;
              }
              if (languageVariant === 1 && text.charCodeAt(pos + 1) === 47 && text.charCodeAt(pos + 2) !== 42) {
                return pos += 2, token = 26;
              }
              pos++;
              return token = 25;
            case 61:
              if (isConflictMarkerTrivia(text, pos)) {
                pos = scanConflictMarkerTrivia(text, pos, error);
                if (skipTrivia) {
                  continue;
                } else {
                  return token = 7;
                }
              }
              if (text.charCodeAt(pos + 1) === 61) {
                if (text.charCodeAt(pos + 2) === 61) {
                  return pos += 3, token = 32;
                }
                return pos += 2, token = 30;
              }
              if (text.charCodeAt(pos + 1) === 62) {
                return pos += 2, token = 34;
              }
              pos++;
              return token = 56;
            case 62:
              if (isConflictMarkerTrivia(text, pos)) {
                pos = scanConflictMarkerTrivia(text, pos, error);
                if (skipTrivia) {
                  continue;
                } else {
                  return token = 7;
                }
              }
              pos++;
              return token = 27;
            case 63:
              pos++;
              return token = 53;
            case 91:
              pos++;
              return token = 19;
            case 93:
              pos++;
              return token = 20;
            case 94:
              if (text.charCodeAt(pos + 1) === 61) {
                return pos += 2, token = 68;
              }
              pos++;
              return token = 48;
            case 123:
              pos++;
              return token = 15;
            case 124:
              if (text.charCodeAt(pos + 1) === 124) {
                return pos += 2, token = 52;
              }
              if (text.charCodeAt(pos + 1) === 61) {
                return pos += 2, token = 67;
              }
              pos++;
              return token = 47;
            case 125:
              pos++;
              return token = 16;
            case 126:
              pos++;
              return token = 50;
            case 64:
              pos++;
              return token = 55;
            case 92:
              var cookedChar = peekUnicodeEscape();
              if (cookedChar >= 0 && isIdentifierStart(cookedChar, languageVersion)) {
                pos += 6;
                tokenValue = String.fromCharCode(cookedChar) + scanIdentifierParts();
                return token = getIdentifierToken();
              }
              error(ts.Diagnostics.Invalid_character);
              pos++;
              return token = 0;
            default:
              if (isIdentifierStart(ch, languageVersion)) {
                pos++;
                while (pos < end && isIdentifierPart(ch = text.charCodeAt(pos), languageVersion))
                  pos++;
                tokenValue = text.substring(tokenPos, pos);
                if (ch === 92) {
                  tokenValue += scanIdentifierParts();
                }
                return token = getIdentifierToken();
              } else if (isWhiteSpace(ch)) {
                pos++;
                continue;
              } else if (isLineBreak(ch)) {
                precedingLineBreak = true;
                pos++;
                continue;
              }
              error(ts.Diagnostics.Invalid_character);
              pos++;
              return token = 0;
          }
        }
      }
      function reScanGreaterToken() {
        if (token === 27) {
          if (text.charCodeAt(pos) === 62) {
            if (text.charCodeAt(pos + 1) === 62) {
              if (text.charCodeAt(pos + 2) === 61) {
                return pos += 3, token = 65;
              }
              return pos += 2, token = 45;
            }
            if (text.charCodeAt(pos + 1) === 61) {
              return pos += 2, token = 64;
            }
            pos++;
            return token = 44;
          }
          if (text.charCodeAt(pos) === 61) {
            pos++;
            return token = 29;
          }
        }
        return token;
      }
      function reScanSlashToken() {
        if (token === 39 || token === 61) {
          var p = tokenPos + 1;
          var inEscape = false;
          var inCharacterClass = false;
          while (true) {
            if (p >= end) {
              tokenIsUnterminated = true;
              error(ts.Diagnostics.Unterminated_regular_expression_literal);
              break;
            }
            var ch = text.charCodeAt(p);
            if (isLineBreak(ch)) {
              tokenIsUnterminated = true;
              error(ts.Diagnostics.Unterminated_regular_expression_literal);
              break;
            }
            if (inEscape) {
              inEscape = false;
            } else if (ch === 47 && !inCharacterClass) {
              p++;
              break;
            } else if (ch === 91) {
              inCharacterClass = true;
            } else if (ch === 92) {
              inEscape = true;
            } else if (ch === 93) {
              inCharacterClass = false;
            }
            p++;
          }
          while (p < end && isIdentifierPart(text.charCodeAt(p), languageVersion)) {
            p++;
          }
          pos = p;
          tokenValue = text.substring(tokenPos, pos);
          token = 10;
        }
        return token;
      }
      function reScanTemplateToken() {
        ts.Debug.assert(token === 16, "'reScanTemplateToken' should only be called on a '}'");
        pos = tokenPos;
        return token = scanTemplateAndSetTokenValue();
      }
      function reScanJsxToken() {
        pos = tokenPos = startPos;
        return token = scanJsxToken();
      }
      function scanJsxToken() {
        startPos = tokenPos = pos;
        if (pos >= end) {
          return token = 1;
        }
        var char = text.charCodeAt(pos);
        if (char === 60) {
          if (text.charCodeAt(pos + 1) === 47) {
            pos += 2;
            return token = 26;
          }
          pos++;
          return token = 25;
        }
        if (char === 123) {
          pos++;
          return token = 15;
        }
        while (pos < end) {
          pos++;
          char = text.charCodeAt(pos);
          if ((char === 123) || (char === 60)) {
            break;
          }
        }
        return token = 239;
      }
      function scanJsxIdentifier() {
        if (tokenIsIdentifierOrKeyword(token)) {
          var firstCharPosition = pos;
          while (pos < end) {
            var ch = text.charCodeAt(pos);
            if (ch === 45 || ((firstCharPosition === pos) ? isIdentifierStart(ch, languageVersion) : isIdentifierPart(ch, languageVersion))) {
              pos++;
            } else {
              break;
            }
          }
          tokenValue += text.substr(firstCharPosition, pos - firstCharPosition);
        }
        return token;
      }
      function scanJSDocToken() {
        if (pos >= end) {
          return token = 1;
        }
        startPos = pos;
        var ch = text.charCodeAt(pos);
        while (pos < end) {
          ch = text.charCodeAt(pos);
          if (isWhiteSpace(ch)) {
            pos++;
          } else {
            break;
          }
        }
        tokenPos = pos;
        switch (ch) {
          case 64:
            return pos += 1, token = 55;
          case 10:
          case 13:
            return pos += 1, token = 4;
          case 42:
            return pos += 1, token = 37;
          case 123:
            return pos += 1, token = 15;
          case 125:
            return pos += 1, token = 16;
          case 91:
            return pos += 1, token = 19;
          case 93:
            return pos += 1, token = 20;
          case 61:
            return pos += 1, token = 56;
          case 44:
            return pos += 1, token = 24;
        }
        if (isIdentifierStart(ch, 2)) {
          pos++;
          while (isIdentifierPart(text.charCodeAt(pos), 2) && pos < end) {
            pos++;
          }
          return token = 69;
        } else {
          return pos += 1, token = 0;
        }
      }
      function speculationHelper(callback, isLookahead) {
        var savePos = pos;
        var saveStartPos = startPos;
        var saveTokenPos = tokenPos;
        var saveToken = token;
        var saveTokenValue = tokenValue;
        var savePrecedingLineBreak = precedingLineBreak;
        var result = callback();
        if (!result || isLookahead) {
          pos = savePos;
          startPos = saveStartPos;
          tokenPos = saveTokenPos;
          token = saveToken;
          tokenValue = saveTokenValue;
          precedingLineBreak = savePrecedingLineBreak;
        }
        return result;
      }
      function scanRange(start, length, callback) {
        var saveEnd = end;
        var savePos = pos;
        var saveStartPos = startPos;
        var saveTokenPos = tokenPos;
        var saveToken = token;
        var savePrecedingLineBreak = precedingLineBreak;
        var saveTokenValue = tokenValue;
        var saveHasExtendedUnicodeEscape = hasExtendedUnicodeEscape;
        var saveTokenIsUnterminated = tokenIsUnterminated;
        setText(text, start, length);
        var result = callback();
        end = saveEnd;
        pos = savePos;
        startPos = saveStartPos;
        tokenPos = saveTokenPos;
        token = saveToken;
        precedingLineBreak = savePrecedingLineBreak;
        tokenValue = saveTokenValue;
        hasExtendedUnicodeEscape = saveHasExtendedUnicodeEscape;
        tokenIsUnterminated = saveTokenIsUnterminated;
        return result;
      }
      function lookAhead(callback) {
        return speculationHelper(callback, true);
      }
      function tryScan(callback) {
        return speculationHelper(callback, false);
      }
      function setText(newText, start, length) {
        text = newText || "";
        end = length === undefined ? text.length : start + length;
        setTextPos(start || 0);
      }
      function setOnError(errorCallback) {
        onError = errorCallback;
      }
      function setScriptTarget(scriptTarget) {
        languageVersion = scriptTarget;
      }
      function setLanguageVariant(variant) {
        languageVariant = variant;
      }
      function setTextPos(textPos) {
        ts.Debug.assert(textPos >= 0);
        pos = textPos;
        startPos = textPos;
        tokenPos = textPos;
        token = 0;
        precedingLineBreak = false;
        tokenValue = undefined;
        hasExtendedUnicodeEscape = false;
        tokenIsUnterminated = false;
      }
    }
    ts.createScanner = createScanner;
  })(ts || (ts = {}));
  var ts;
  (function(ts) {
    function getDeclarationOfKind(symbol, kind) {
      var declarations = symbol.declarations;
      if (declarations) {
        for (var _i = 0,
            declarations_1 = declarations; _i < declarations_1.length; _i++) {
          var declaration = declarations_1[_i];
          if (declaration.kind === kind) {
            return declaration;
          }
        }
      }
      return undefined;
    }
    ts.getDeclarationOfKind = getDeclarationOfKind;
    var stringWriters = [];
    function getSingleLineStringWriter() {
      if (stringWriters.length === 0) {
        var str_1 = "";
        var writeText = function(text) {
          return str_1 += text;
        };
        return {
          string: function() {
            return str_1;
          },
          writeKeyword: writeText,
          writeOperator: writeText,
          writePunctuation: writeText,
          writeSpace: writeText,
          writeStringLiteral: writeText,
          writeParameter: writeText,
          writeSymbol: writeText,
          writeLine: function() {
            return str_1 += " ";
          },
          increaseIndent: function() {},
          decreaseIndent: function() {},
          clear: function() {
            return str_1 = "";
          },
          trackSymbol: function() {},
          reportInaccessibleThisError: function() {}
        };
      }
      return stringWriters.pop();
    }
    ts.getSingleLineStringWriter = getSingleLineStringWriter;
    function releaseStringWriter(writer) {
      writer.clear();
      stringWriters.push(writer);
    }
    ts.releaseStringWriter = releaseStringWriter;
    function getFullWidth(node) {
      return node.end - node.pos;
    }
    ts.getFullWidth = getFullWidth;
    function arrayIsEqualTo(array1, array2, equaler) {
      if (!array1 || !array2) {
        return array1 === array2;
      }
      if (array1.length !== array2.length) {
        return false;
      }
      for (var i = 0; i < array1.length; i++) {
        var equals = equaler ? equaler(array1[i], array2[i]) : array1[i] === array2[i];
        if (!equals) {
          return false;
        }
      }
      return true;
    }
    ts.arrayIsEqualTo = arrayIsEqualTo;
    function hasResolvedModule(sourceFile, moduleNameText) {
      return sourceFile.resolvedModules && ts.hasProperty(sourceFile.resolvedModules, moduleNameText);
    }
    ts.hasResolvedModule = hasResolvedModule;
    function getResolvedModule(sourceFile, moduleNameText) {
      return hasResolvedModule(sourceFile, moduleNameText) ? sourceFile.resolvedModules[moduleNameText] : undefined;
    }
    ts.getResolvedModule = getResolvedModule;
    function setResolvedModule(sourceFile, moduleNameText, resolvedModule) {
      if (!sourceFile.resolvedModules) {
        sourceFile.resolvedModules = {};
      }
      sourceFile.resolvedModules[moduleNameText] = resolvedModule;
    }
    ts.setResolvedModule = setResolvedModule;
    function containsParseError(node) {
      aggregateChildData(node);
      return (node.parserContextFlags & 64) !== 0;
    }
    ts.containsParseError = containsParseError;
    function aggregateChildData(node) {
      if (!(node.parserContextFlags & 128)) {
        var thisNodeOrAnySubNodesHasError = ((node.parserContextFlags & 16) !== 0) || ts.forEachChild(node, containsParseError);
        if (thisNodeOrAnySubNodesHasError) {
          node.parserContextFlags |= 64;
        }
        node.parserContextFlags |= 128;
      }
    }
    function getSourceFileOfNode(node) {
      while (node && node.kind !== 251) {
        node = node.parent;
      }
      return node;
    }
    ts.getSourceFileOfNode = getSourceFileOfNode;
    function isStatementWithLocals(node) {
      switch (node.kind) {
        case 195:
        case 223:
        case 202:
        case 203:
        case 204:
          return true;
      }
      return false;
    }
    ts.isStatementWithLocals = isStatementWithLocals;
    function getStartPositionOfLine(line, sourceFile) {
      ts.Debug.assert(line >= 0);
      return ts.getLineStarts(sourceFile)[line];
    }
    ts.getStartPositionOfLine = getStartPositionOfLine;
    function nodePosToString(node) {
      var file = getSourceFileOfNode(node);
      var loc = ts.getLineAndCharacterOfPosition(file, node.pos);
      return file.fileName + "(" + (loc.line + 1) + "," + (loc.character + 1) + ")";
    }
    ts.nodePosToString = nodePosToString;
    function getStartPosOfNode(node) {
      return node.pos;
    }
    ts.getStartPosOfNode = getStartPosOfNode;
    function nodeIsMissing(node) {
      if (!node) {
        return true;
      }
      return node.pos === node.end && node.pos >= 0 && node.kind !== 1;
    }
    ts.nodeIsMissing = nodeIsMissing;
    function nodeIsPresent(node) {
      return !nodeIsMissing(node);
    }
    ts.nodeIsPresent = nodeIsPresent;
    function getTokenPosOfNode(node, sourceFile) {
      if (nodeIsMissing(node)) {
        return node.pos;
      }
      return ts.skipTrivia((sourceFile || getSourceFileOfNode(node)).text, node.pos);
    }
    ts.getTokenPosOfNode = getTokenPosOfNode;
    function getNonDecoratorTokenPosOfNode(node, sourceFile) {
      if (nodeIsMissing(node) || !node.decorators) {
        return getTokenPosOfNode(node, sourceFile);
      }
      return ts.skipTrivia((sourceFile || getSourceFileOfNode(node)).text, node.decorators.end);
    }
    ts.getNonDecoratorTokenPosOfNode = getNonDecoratorTokenPosOfNode;
    function getSourceTextOfNodeFromSourceFile(sourceFile, node, includeTrivia) {
      if (includeTrivia === void 0) {
        includeTrivia = false;
      }
      if (nodeIsMissing(node)) {
        return "";
      }
      var text = sourceFile.text;
      return text.substring(includeTrivia ? node.pos : ts.skipTrivia(text, node.pos), node.end);
    }
    ts.getSourceTextOfNodeFromSourceFile = getSourceTextOfNodeFromSourceFile;
    function getTextOfNodeFromSourceText(sourceText, node) {
      if (nodeIsMissing(node)) {
        return "";
      }
      return sourceText.substring(ts.skipTrivia(sourceText, node.pos), node.end);
    }
    ts.getTextOfNodeFromSourceText = getTextOfNodeFromSourceText;
    function getTextOfNode(node, includeTrivia) {
      if (includeTrivia === void 0) {
        includeTrivia = false;
      }
      return getSourceTextOfNodeFromSourceFile(getSourceFileOfNode(node), node, includeTrivia);
    }
    ts.getTextOfNode = getTextOfNode;
    function escapeIdentifier(identifier) {
      return identifier.length >= 2 && identifier.charCodeAt(0) === 95 && identifier.charCodeAt(1) === 95 ? "_" + identifier : identifier;
    }
    ts.escapeIdentifier = escapeIdentifier;
    function unescapeIdentifier(identifier) {
      return identifier.length >= 3 && identifier.charCodeAt(0) === 95 && identifier.charCodeAt(1) === 95 && identifier.charCodeAt(2) === 95 ? identifier.substr(1) : identifier;
    }
    ts.unescapeIdentifier = unescapeIdentifier;
    function makeIdentifierFromModuleName(moduleName) {
      return ts.getBaseFileName(moduleName).replace(/^(\d)/, "_$1").replace(/\W/g, "_");
    }
    ts.makeIdentifierFromModuleName = makeIdentifierFromModuleName;
    function isBlockOrCatchScoped(declaration) {
      return (getCombinedNodeFlags(declaration) & 24576) !== 0 || isCatchClauseVariableDeclaration(declaration);
    }
    ts.isBlockOrCatchScoped = isBlockOrCatchScoped;
    function isAmbientModule(node) {
      return node && node.kind === 221 && (node.name.kind === 9 || isGlobalScopeAugmentation(node));
    }
    ts.isAmbientModule = isAmbientModule;
    function isBlockScopedContainerTopLevel(node) {
      return node.kind === 251 || node.kind === 221 || isFunctionLike(node) || isFunctionBlock(node);
    }
    ts.isBlockScopedContainerTopLevel = isBlockScopedContainerTopLevel;
    function isGlobalScopeAugmentation(module) {
      return !!(module.flags & 2097152);
    }
    ts.isGlobalScopeAugmentation = isGlobalScopeAugmentation;
    function isExternalModuleAugmentation(node) {
      if (!node || !isAmbientModule(node)) {
        return false;
      }
      switch (node.parent.kind) {
        case 251:
          return isExternalModule(node.parent);
        case 222:
          return isAmbientModule(node.parent.parent) && !isExternalModule(node.parent.parent.parent);
      }
      return false;
    }
    ts.isExternalModuleAugmentation = isExternalModuleAugmentation;
    function getEnclosingBlockScopeContainer(node) {
      var current = node.parent;
      while (current) {
        if (isFunctionLike(current)) {
          return current;
        }
        switch (current.kind) {
          case 251:
          case 223:
          case 247:
          case 221:
          case 202:
          case 203:
          case 204:
            return current;
          case 195:
            if (!isFunctionLike(current.parent)) {
              return current;
            }
        }
        current = current.parent;
      }
    }
    ts.getEnclosingBlockScopeContainer = getEnclosingBlockScopeContainer;
    function isCatchClauseVariableDeclaration(declaration) {
      return declaration && declaration.kind === 214 && declaration.parent && declaration.parent.kind === 247;
    }
    ts.isCatchClauseVariableDeclaration = isCatchClauseVariableDeclaration;
    function declarationNameToString(name) {
      return getFullWidth(name) === 0 ? "(Missing)" : getTextOfNode(name);
    }
    ts.declarationNameToString = declarationNameToString;
    function createDiagnosticForNode(node, message, arg0, arg1, arg2) {
      var sourceFile = getSourceFileOfNode(node);
      var span = getErrorSpanForNode(sourceFile, node);
      return ts.createFileDiagnostic(sourceFile, span.start, span.length, message, arg0, arg1, arg2);
    }
    ts.createDiagnosticForNode = createDiagnosticForNode;
    function createDiagnosticForNodeFromMessageChain(node, messageChain) {
      var sourceFile = getSourceFileOfNode(node);
      var span = getErrorSpanForNode(sourceFile, node);
      return {
        file: sourceFile,
        start: span.start,
        length: span.length,
        code: messageChain.code,
        category: messageChain.category,
        messageText: messageChain.next ? messageChain : messageChain.messageText
      };
    }
    ts.createDiagnosticForNodeFromMessageChain = createDiagnosticForNodeFromMessageChain;
    function getSpanOfTokenAtPosition(sourceFile, pos) {
      var scanner = ts.createScanner(sourceFile.languageVersion, true, sourceFile.languageVariant, sourceFile.text, undefined, pos);
      scanner.scan();
      var start = scanner.getTokenPos();
      return ts.createTextSpanFromBounds(start, scanner.getTextPos());
    }
    ts.getSpanOfTokenAtPosition = getSpanOfTokenAtPosition;
    function getErrorSpanForNode(sourceFile, node) {
      var errorNode = node;
      switch (node.kind) {
        case 251:
          var pos_1 = ts.skipTrivia(sourceFile.text, 0, false);
          if (pos_1 === sourceFile.text.length) {
            return ts.createTextSpan(0, 0);
          }
          return getSpanOfTokenAtPosition(sourceFile, pos_1);
        case 214:
        case 166:
        case 217:
        case 189:
        case 218:
        case 221:
        case 220:
        case 250:
        case 216:
        case 176:
        case 144:
        case 219:
          errorNode = node.name;
          break;
      }
      if (errorNode === undefined) {
        return getSpanOfTokenAtPosition(sourceFile, node.pos);
      }
      var pos = nodeIsMissing(errorNode) ? errorNode.pos : ts.skipTrivia(sourceFile.text, errorNode.pos);
      return ts.createTextSpanFromBounds(pos, errorNode.end);
    }
    ts.getErrorSpanForNode = getErrorSpanForNode;
    function isExternalModule(file) {
      return file.externalModuleIndicator !== undefined;
    }
    ts.isExternalModule = isExternalModule;
    function isExternalOrCommonJsModule(file) {
      return (file.externalModuleIndicator || file.commonJsModuleIndicator) !== undefined;
    }
    ts.isExternalOrCommonJsModule = isExternalOrCommonJsModule;
    function isDeclarationFile(file) {
      return (file.flags & 4096) !== 0;
    }
    ts.isDeclarationFile = isDeclarationFile;
    function isConstEnumDeclaration(node) {
      return node.kind === 220 && isConst(node);
    }
    ts.isConstEnumDeclaration = isConstEnumDeclaration;
    function walkUpBindingElementsAndPatterns(node) {
      while (node && (node.kind === 166 || isBindingPattern(node))) {
        node = node.parent;
      }
      return node;
    }
    function getCombinedNodeFlags(node) {
      node = walkUpBindingElementsAndPatterns(node);
      var flags = node.flags;
      if (node.kind === 214) {
        node = node.parent;
      }
      if (node && node.kind === 215) {
        flags |= node.flags;
        node = node.parent;
      }
      if (node && node.kind === 196) {
        flags |= node.flags;
      }
      return flags;
    }
    ts.getCombinedNodeFlags = getCombinedNodeFlags;
    function isConst(node) {
      return !!(getCombinedNodeFlags(node) & 16384);
    }
    ts.isConst = isConst;
    function isLet(node) {
      return !!(getCombinedNodeFlags(node) & 8192);
    }
    ts.isLet = isLet;
    function isSuperCallExpression(n) {
      return n.kind === 171 && n.expression.kind === 95;
    }
    ts.isSuperCallExpression = isSuperCallExpression;
    function isPrologueDirective(node) {
      return node.kind === 198 && node.expression.kind === 9;
    }
    ts.isPrologueDirective = isPrologueDirective;
    function getLeadingCommentRangesOfNode(node, sourceFileOfNode) {
      return ts.getLeadingCommentRanges(sourceFileOfNode.text, node.pos);
    }
    ts.getLeadingCommentRangesOfNode = getLeadingCommentRangesOfNode;
    function getLeadingCommentRangesOfNodeFromText(node, text) {
      return ts.getLeadingCommentRanges(text, node.pos);
    }
    ts.getLeadingCommentRangesOfNodeFromText = getLeadingCommentRangesOfNodeFromText;
    function getJsDocComments(node, sourceFileOfNode) {
      return getJsDocCommentsFromText(node, sourceFileOfNode.text);
    }
    ts.getJsDocComments = getJsDocComments;
    function getJsDocCommentsFromText(node, text) {
      var commentRanges = (node.kind === 139 || node.kind === 138) ? ts.concatenate(ts.getTrailingCommentRanges(text, node.pos), ts.getLeadingCommentRanges(text, node.pos)) : getLeadingCommentRangesOfNodeFromText(node, text);
      return ts.filter(commentRanges, isJsDocComment);
      function isJsDocComment(comment) {
        return text.charCodeAt(comment.pos + 1) === 42 && text.charCodeAt(comment.pos + 2) === 42 && text.charCodeAt(comment.pos + 3) !== 47;
      }
    }
    ts.getJsDocCommentsFromText = getJsDocCommentsFromText;
    ts.fullTripleSlashReferencePathRegEx = /^(\/\/\/\s*<reference\s+path\s*=\s*)('|")(.+?)\2.*?\/>/;
    ts.fullTripleSlashAMDReferencePathRegEx = /^(\/\/\/\s*<amd-dependency\s+path\s*=\s*)('|")(.+?)\2.*?\/>/;
    function isTypeNode(node) {
      if (151 <= node.kind && node.kind <= 163) {
        return true;
      }
      switch (node.kind) {
        case 117:
        case 128:
        case 130:
        case 120:
        case 131:
          return true;
        case 103:
          return node.parent.kind !== 180;
        case 191:
          return !isExpressionWithTypeArgumentsInClassExtendsClause(node);
        case 69:
          if (node.parent.kind === 136 && node.parent.right === node) {
            node = node.parent;
          } else if (node.parent.kind === 169 && node.parent.name === node) {
            node = node.parent;
          }
          ts.Debug.assert(node.kind === 69 || node.kind === 136 || node.kind === 169, "'node' was expected to be a qualified name, identifier or property access in 'isTypeNode'.");
        case 136:
        case 169:
        case 97:
          var parent_1 = node.parent;
          if (parent_1.kind === 155) {
            return false;
          }
          if (151 <= parent_1.kind && parent_1.kind <= 163) {
            return true;
          }
          switch (parent_1.kind) {
            case 191:
              return !isExpressionWithTypeArgumentsInClassExtendsClause(parent_1);
            case 138:
              return node === parent_1.constraint;
            case 142:
            case 141:
            case 139:
            case 214:
              return node === parent_1.type;
            case 216:
            case 176:
            case 177:
            case 145:
            case 144:
            case 143:
            case 146:
            case 147:
              return node === parent_1.type;
            case 148:
            case 149:
            case 150:
              return node === parent_1.type;
            case 174:
              return node === parent_1.type;
            case 171:
            case 172:
              return parent_1.typeArguments && ts.indexOf(parent_1.typeArguments, node) >= 0;
            case 173:
              return false;
          }
      }
      return false;
    }
    ts.isTypeNode = isTypeNode;
    function forEachReturnStatement(body, visitor) {
      return traverse(body);
      function traverse(node) {
        switch (node.kind) {
          case 207:
            return visitor(node);
          case 223:
          case 195:
          case 199:
          case 200:
          case 201:
          case 202:
          case 203:
          case 204:
          case 208:
          case 209:
          case 244:
          case 245:
          case 210:
          case 212:
          case 247:
            return ts.forEachChild(node, traverse);
        }
      }
    }
    ts.forEachReturnStatement = forEachReturnStatement;
    function forEachYieldExpression(body, visitor) {
      return traverse(body);
      function traverse(node) {
        switch (node.kind) {
          case 187:
            visitor(node);
            var operand = node.expression;
            if (operand) {
              traverse(operand);
            }
          case 220:
          case 218:
          case 221:
          case 219:
          case 217:
          case 189:
            return;
          default:
            if (isFunctionLike(node)) {
              var name_5 = node.name;
              if (name_5 && name_5.kind === 137) {
                traverse(name_5.expression);
                return;
              }
            } else if (!isTypeNode(node)) {
              ts.forEachChild(node, traverse);
            }
        }
      }
    }
    ts.forEachYieldExpression = forEachYieldExpression;
    function isVariableLike(node) {
      if (node) {
        switch (node.kind) {
          case 166:
          case 250:
          case 139:
          case 248:
          case 142:
          case 141:
          case 249:
          case 214:
            return true;
        }
      }
      return false;
    }
    ts.isVariableLike = isVariableLike;
    function isAccessor(node) {
      return node && (node.kind === 146 || node.kind === 147);
    }
    ts.isAccessor = isAccessor;
    function isClassLike(node) {
      return node && (node.kind === 217 || node.kind === 189);
    }
    ts.isClassLike = isClassLike;
    function isFunctionLike(node) {
      return node && isFunctionLikeKind(node.kind);
    }
    ts.isFunctionLike = isFunctionLike;
    function isFunctionLikeKind(kind) {
      switch (kind) {
        case 145:
        case 176:
        case 216:
        case 177:
        case 144:
        case 143:
        case 146:
        case 147:
        case 148:
        case 149:
        case 150:
        case 153:
        case 154:
          return true;
      }
    }
    ts.isFunctionLikeKind = isFunctionLikeKind;
    function introducesArgumentsExoticObject(node) {
      switch (node.kind) {
        case 144:
        case 143:
        case 145:
        case 146:
        case 147:
        case 216:
        case 176:
          return true;
      }
      return false;
    }
    ts.introducesArgumentsExoticObject = introducesArgumentsExoticObject;
    function isIterationStatement(node, lookInLabeledStatements) {
      switch (node.kind) {
        case 202:
        case 203:
        case 204:
        case 200:
        case 201:
          return true;
        case 210:
          return lookInLabeledStatements && isIterationStatement(node.statement, lookInLabeledStatements);
      }
      return false;
    }
    ts.isIterationStatement = isIterationStatement;
    function isFunctionBlock(node) {
      return node && node.kind === 195 && isFunctionLike(node.parent);
    }
    ts.isFunctionBlock = isFunctionBlock;
    function isObjectLiteralMethod(node) {
      return node && node.kind === 144 && node.parent.kind === 168;
    }
    ts.isObjectLiteralMethod = isObjectLiteralMethod;
    function isIdentifierTypePredicate(predicate) {
      return predicate && predicate.kind === 1;
    }
    ts.isIdentifierTypePredicate = isIdentifierTypePredicate;
    function isThisTypePredicate(predicate) {
      return predicate && predicate.kind === 0;
    }
    ts.isThisTypePredicate = isThisTypePredicate;
    function getContainingFunction(node) {
      while (true) {
        node = node.parent;
        if (!node || isFunctionLike(node)) {
          return node;
        }
      }
    }
    ts.getContainingFunction = getContainingFunction;
    function getContainingClass(node) {
      while (true) {
        node = node.parent;
        if (!node || isClassLike(node)) {
          return node;
        }
      }
    }
    ts.getContainingClass = getContainingClass;
    function getThisContainer(node, includeArrowFunctions) {
      while (true) {
        node = node.parent;
        if (!node) {
          return undefined;
        }
        switch (node.kind) {
          case 137:
            if (isClassLike(node.parent.parent)) {
              return node;
            }
            node = node.parent;
            break;
          case 140:
            if (node.parent.kind === 139 && isClassElement(node.parent.parent)) {
              node = node.parent.parent;
            } else if (isClassElement(node.parent)) {
              node = node.parent;
            }
            break;
          case 177:
            if (!includeArrowFunctions) {
              continue;
            }
          case 216:
          case 176:
          case 221:
          case 142:
          case 141:
          case 144:
          case 143:
          case 145:
          case 146:
          case 147:
          case 148:
          case 149:
          case 150:
          case 220:
          case 251:
            return node;
        }
      }
    }
    ts.getThisContainer = getThisContainer;
    function getSuperContainer(node, stopOnFunctions) {
      while (true) {
        node = node.parent;
        if (!node) {
          return node;
        }
        switch (node.kind) {
          case 137:
            node = node.parent;
            break;
          case 216:
          case 176:
          case 177:
            if (!stopOnFunctions) {
              continue;
            }
          case 142:
          case 141:
          case 144:
          case 143:
          case 145:
          case 146:
          case 147:
            return node;
          case 140:
            if (node.parent.kind === 139 && isClassElement(node.parent.parent)) {
              node = node.parent.parent;
            } else if (isClassElement(node.parent)) {
              node = node.parent;
            }
            break;
        }
      }
    }
    ts.getSuperContainer = getSuperContainer;
    function isSuperPropertyOrElementAccess(node) {
      return (node.kind === 169 || node.kind === 170) && node.expression.kind === 95;
    }
    ts.isSuperPropertyOrElementAccess = isSuperPropertyOrElementAccess;
    function getEntityNameFromTypeNode(node) {
      if (node) {
        switch (node.kind) {
          case 152:
            return node.typeName;
          case 191:
            return node.expression;
          case 69:
          case 136:
            return node;
        }
      }
      return undefined;
    }
    ts.getEntityNameFromTypeNode = getEntityNameFromTypeNode;
    function getInvokedExpression(node) {
      if (node.kind === 173) {
        return node.tag;
      }
      return node.expression;
    }
    ts.getInvokedExpression = getInvokedExpression;
    function nodeCanBeDecorated(node) {
      switch (node.kind) {
        case 217:
          return true;
        case 142:
          return node.parent.kind === 217;
        case 146:
        case 147:
        case 144:
          return node.body !== undefined && node.parent.kind === 217;
        case 139:
          return node.parent.body !== undefined && (node.parent.kind === 145 || node.parent.kind === 144 || node.parent.kind === 147) && node.parent.parent.kind === 217;
      }
      return false;
    }
    ts.nodeCanBeDecorated = nodeCanBeDecorated;
    function nodeIsDecorated(node) {
      return node.decorators !== undefined && nodeCanBeDecorated(node);
    }
    ts.nodeIsDecorated = nodeIsDecorated;
    function isPropertyAccessExpression(node) {
      return node.kind === 169;
    }
    ts.isPropertyAccessExpression = isPropertyAccessExpression;
    function isElementAccessExpression(node) {
      return node.kind === 170;
    }
    ts.isElementAccessExpression = isElementAccessExpression;
    function isExpression(node) {
      switch (node.kind) {
        case 95:
        case 93:
        case 99:
        case 84:
        case 10:
        case 167:
        case 168:
        case 169:
        case 170:
        case 171:
        case 172:
        case 173:
        case 192:
        case 174:
        case 175:
        case 176:
        case 189:
        case 177:
        case 180:
        case 178:
        case 179:
        case 182:
        case 183:
        case 184:
        case 185:
        case 188:
        case 186:
        case 11:
        case 190:
        case 236:
        case 237:
        case 187:
        case 181:
          return true;
        case 136:
          while (node.parent.kind === 136) {
            node = node.parent;
          }
          return node.parent.kind === 155;
        case 69:
          if (node.parent.kind === 155) {
            return true;
          }
        case 8:
        case 9:
        case 97:
          var parent_2 = node.parent;
          switch (parent_2.kind) {
            case 214:
            case 139:
            case 142:
            case 141:
            case 250:
            case 248:
            case 166:
              return parent_2.initializer === node;
            case 198:
            case 199:
            case 200:
            case 201:
            case 207:
            case 208:
            case 209:
            case 244:
            case 211:
            case 209:
              return parent_2.expression === node;
            case 202:
              var forStatement = parent_2;
              return (forStatement.initializer === node && forStatement.initializer.kind !== 215) || forStatement.condition === node || forStatement.incrementor === node;
            case 203:
            case 204:
              var forInStatement = parent_2;
              return (forInStatement.initializer === node && forInStatement.initializer.kind !== 215) || forInStatement.expression === node;
            case 174:
            case 192:
              return node === parent_2.expression;
            case 193:
              return node === parent_2.expression;
            case 137:
              return node === parent_2.expression;
            case 140:
            case 243:
            case 242:
              return true;
            case 191:
              return parent_2.expression === node && isExpressionWithTypeArgumentsInClassExtendsClause(parent_2);
            default:
              if (isExpression(parent_2)) {
                return true;
              }
          }
      }
      return false;
    }
    ts.isExpression = isExpression;
    function isExternalModuleNameRelative(moduleName) {
      return moduleName.substr(0, 2) === "./" || moduleName.substr(0, 3) === "../" || moduleName.substr(0, 2) === ".\\" || moduleName.substr(0, 3) === "..\\";
    }
    ts.isExternalModuleNameRelative = isExternalModuleNameRelative;
    function isInstantiatedModule(node, preserveConstEnums) {
      var moduleState = ts.getModuleInstanceState(node);
      return moduleState === 1 || (preserveConstEnums && moduleState === 2);
    }
    ts.isInstantiatedModule = isInstantiatedModule;
    function isExternalModuleImportEqualsDeclaration(node) {
      return node.kind === 224 && node.moduleReference.kind === 235;
    }
    ts.isExternalModuleImportEqualsDeclaration = isExternalModuleImportEqualsDeclaration;
    function getExternalModuleImportEqualsDeclarationExpression(node) {
      ts.Debug.assert(isExternalModuleImportEqualsDeclaration(node));
      return node.moduleReference.expression;
    }
    ts.getExternalModuleImportEqualsDeclarationExpression = getExternalModuleImportEqualsDeclarationExpression;
    function isInternalModuleImportEqualsDeclaration(node) {
      return node.kind === 224 && node.moduleReference.kind !== 235;
    }
    ts.isInternalModuleImportEqualsDeclaration = isInternalModuleImportEqualsDeclaration;
    function isSourceFileJavaScript(file) {
      return isInJavaScriptFile(file);
    }
    ts.isSourceFileJavaScript = isSourceFileJavaScript;
    function isInJavaScriptFile(node) {
      return node && !!(node.parserContextFlags & 32);
    }
    ts.isInJavaScriptFile = isInJavaScriptFile;
    function isRequireCall(expression, checkArgumentIsStringLiteral) {
      var isRequire = expression.kind === 171 && expression.expression.kind === 69 && expression.expression.text === "require" && expression.arguments.length === 1;
      return isRequire && (!checkArgumentIsStringLiteral || expression.arguments[0].kind === 9);
    }
    ts.isRequireCall = isRequireCall;
    function getSpecialPropertyAssignmentKind(expression) {
      if (!isInJavaScriptFile(expression)) {
        return 0;
      }
      if (expression.kind !== 184) {
        return 0;
      }
      var expr = expression;
      if (expr.operatorToken.kind !== 56 || expr.left.kind !== 169) {
        return 0;
      }
      var lhs = expr.left;
      if (lhs.expression.kind === 69) {
        var lhsId = lhs.expression;
        if (lhsId.text === "exports") {
          return 1;
        } else if (lhsId.text === "module" && lhs.name.text === "exports") {
          return 2;
        }
      } else if (lhs.expression.kind === 97) {
        return 4;
      } else if (lhs.expression.kind === 169) {
        var innerPropertyAccess = lhs.expression;
        if (innerPropertyAccess.expression.kind === 69 && innerPropertyAccess.name.text === "prototype") {
          return 3;
        }
      }
      return 0;
    }
    ts.getSpecialPropertyAssignmentKind = getSpecialPropertyAssignmentKind;
    function getExternalModuleName(node) {
      if (node.kind === 225) {
        return node.moduleSpecifier;
      }
      if (node.kind === 224) {
        var reference = node.moduleReference;
        if (reference.kind === 235) {
          return reference.expression;
        }
      }
      if (node.kind === 231) {
        return node.moduleSpecifier;
      }
      if (node.kind === 221 && node.name.kind === 9) {
        return node.name;
      }
    }
    ts.getExternalModuleName = getExternalModuleName;
    function hasQuestionToken(node) {
      if (node) {
        switch (node.kind) {
          case 139:
          case 144:
          case 143:
          case 249:
          case 248:
          case 142:
          case 141:
            return node.questionToken !== undefined;
        }
      }
      return false;
    }
    ts.hasQuestionToken = hasQuestionToken;
    function isJSDocConstructSignature(node) {
      return node.kind === 264 && node.parameters.length > 0 && node.parameters[0].type.kind === 266;
    }
    ts.isJSDocConstructSignature = isJSDocConstructSignature;
    function getJSDocTag(node, kind, checkParentVariableStatement) {
      if (!node) {
        return undefined;
      }
      var jsDocComment = getJSDocComment(node, checkParentVariableStatement);
      if (!jsDocComment) {
        return undefined;
      }
      for (var _i = 0,
          _a = jsDocComment.tags; _i < _a.length; _i++) {
        var tag = _a[_i];
        if (tag.kind === kind) {
          return tag;
        }
      }
    }
    function getJSDocComment(node, checkParentVariableStatement) {
      if (node.jsDocComment) {
        return node.jsDocComment;
      }
      if (checkParentVariableStatement) {
        var isInitializerOfVariableDeclarationInStatement = node.parent.kind === 214 && node.parent.initializer === node && node.parent.parent.parent.kind === 196;
        var variableStatementNode = isInitializerOfVariableDeclarationInStatement ? node.parent.parent.parent : undefined;
        if (variableStatementNode) {
          return variableStatementNode.jsDocComment;
        }
        var parent_3 = node.parent;
        var isSourceOfAssignmentExpressionStatement = parent_3 && parent_3.parent && parent_3.kind === 184 && parent_3.operatorToken.kind === 56 && parent_3.parent.kind === 198;
        if (isSourceOfAssignmentExpressionStatement) {
          return parent_3.parent.jsDocComment;
        }
        var isPropertyAssignmentExpression = parent_3 && parent_3.kind === 248;
        if (isPropertyAssignmentExpression) {
          return parent_3.jsDocComment;
        }
      }
      return undefined;
    }
    function getJSDocTypeTag(node) {
      return getJSDocTag(node, 272, false);
    }
    ts.getJSDocTypeTag = getJSDocTypeTag;
    function getJSDocReturnTag(node) {
      return getJSDocTag(node, 271, true);
    }
    ts.getJSDocReturnTag = getJSDocReturnTag;
    function getJSDocTemplateTag(node) {
      return getJSDocTag(node, 273, false);
    }
    ts.getJSDocTemplateTag = getJSDocTemplateTag;
    function getCorrespondingJSDocParameterTag(parameter) {
      if (parameter.name && parameter.name.kind === 69) {
        var parameterName = parameter.name.text;
        var jsDocComment = getJSDocComment(parameter.parent, true);
        if (jsDocComment) {
          for (var _i = 0,
              _a = jsDocComment.tags; _i < _a.length; _i++) {
            var tag = _a[_i];
            if (tag.kind === 270) {
              var parameterTag = tag;
              var name_6 = parameterTag.preParameterName || parameterTag.postParameterName;
              if (name_6.text === parameterName) {
                return parameterTag;
              }
            }
          }
        }
      }
      return undefined;
    }
    ts.getCorrespondingJSDocParameterTag = getCorrespondingJSDocParameterTag;
    function hasRestParameter(s) {
      return isRestParameter(ts.lastOrUndefined(s.parameters));
    }
    ts.hasRestParameter = hasRestParameter;
    function isRestParameter(node) {
      if (node) {
        if (node.parserContextFlags & 32) {
          if (node.type && node.type.kind === 265) {
            return true;
          }
          var paramTag = getCorrespondingJSDocParameterTag(node);
          if (paramTag && paramTag.typeExpression) {
            return paramTag.typeExpression.type.kind === 265;
          }
        }
        return node.dotDotDotToken !== undefined;
      }
      return false;
    }
    ts.isRestParameter = isRestParameter;
    function isLiteralKind(kind) {
      return 8 <= kind && kind <= 11;
    }
    ts.isLiteralKind = isLiteralKind;
    function isTextualLiteralKind(kind) {
      return kind === 9 || kind === 11;
    }
    ts.isTextualLiteralKind = isTextualLiteralKind;
    function isTemplateLiteralKind(kind) {
      return 11 <= kind && kind <= 14;
    }
    ts.isTemplateLiteralKind = isTemplateLiteralKind;
    function isBindingPattern(node) {
      return !!node && (node.kind === 165 || node.kind === 164);
    }
    ts.isBindingPattern = isBindingPattern;
    function isNodeDescendentOf(node, ancestor) {
      while (node) {
        if (node === ancestor)
          return true;
        node = node.parent;
      }
      return false;
    }
    ts.isNodeDescendentOf = isNodeDescendentOf;
    function isInAmbientContext(node) {
      while (node) {
        if (node.flags & (4 | 4096)) {
          return true;
        }
        node = node.parent;
      }
      return false;
    }
    ts.isInAmbientContext = isInAmbientContext;
    function isDeclaration(node) {
      switch (node.kind) {
        case 177:
        case 166:
        case 217:
        case 189:
        case 145:
        case 220:
        case 250:
        case 233:
        case 216:
        case 176:
        case 146:
        case 226:
        case 224:
        case 229:
        case 218:
        case 144:
        case 143:
        case 221:
        case 227:
        case 139:
        case 248:
        case 142:
        case 141:
        case 147:
        case 249:
        case 219:
        case 138:
        case 214:
          return true;
      }
      return false;
    }
    ts.isDeclaration = isDeclaration;
    function isStatement(n) {
      switch (n.kind) {
        case 206:
        case 205:
        case 213:
        case 200:
        case 198:
        case 197:
        case 203:
        case 204:
        case 202:
        case 199:
        case 210:
        case 207:
        case 209:
        case 211:
        case 212:
        case 196:
        case 201:
        case 208:
        case 230:
          return true;
        default:
          return false;
      }
    }
    ts.isStatement = isStatement;
    function isClassElement(n) {
      switch (n.kind) {
        case 145:
        case 142:
        case 144:
        case 146:
        case 147:
        case 143:
        case 150:
          return true;
        default:
          return false;
      }
    }
    ts.isClassElement = isClassElement;
    function isDeclarationName(name) {
      if (name.kind !== 69 && name.kind !== 9 && name.kind !== 8) {
        return false;
      }
      var parent = name.parent;
      if (parent.kind === 229 || parent.kind === 233) {
        if (parent.propertyName) {
          return true;
        }
      }
      if (isDeclaration(parent)) {
        return parent.name === name;
      }
      return false;
    }
    ts.isDeclarationName = isDeclarationName;
    function isIdentifierName(node) {
      var parent = node.parent;
      switch (parent.kind) {
        case 142:
        case 141:
        case 144:
        case 143:
        case 146:
        case 147:
        case 250:
        case 248:
        case 169:
          return parent.name === node;
        case 136:
          if (parent.right === node) {
            while (parent.kind === 136) {
              parent = parent.parent;
            }
            return parent.kind === 155;
          }
          return false;
        case 166:
        case 229:
          return parent.propertyName === node;
        case 233:
          return true;
      }
      return false;
    }
    ts.isIdentifierName = isIdentifierName;
    function isAliasSymbolDeclaration(node) {
      return node.kind === 224 || node.kind === 226 && !!node.name || node.kind === 227 || node.kind === 229 || node.kind === 233 || node.kind === 230 && node.expression.kind === 69;
    }
    ts.isAliasSymbolDeclaration = isAliasSymbolDeclaration;
    function getClassExtendsHeritageClauseElement(node) {
      var heritageClause = getHeritageClause(node.heritageClauses, 83);
      return heritageClause && heritageClause.types.length > 0 ? heritageClause.types[0] : undefined;
    }
    ts.getClassExtendsHeritageClauseElement = getClassExtendsHeritageClauseElement;
    function getClassImplementsHeritageClauseElements(node) {
      var heritageClause = getHeritageClause(node.heritageClauses, 106);
      return heritageClause ? heritageClause.types : undefined;
    }
    ts.getClassImplementsHeritageClauseElements = getClassImplementsHeritageClauseElements;
    function getInterfaceBaseTypeNodes(node) {
      var heritageClause = getHeritageClause(node.heritageClauses, 83);
      return heritageClause ? heritageClause.types : undefined;
    }
    ts.getInterfaceBaseTypeNodes = getInterfaceBaseTypeNodes;
    function getHeritageClause(clauses, kind) {
      if (clauses) {
        for (var _i = 0,
            clauses_1 = clauses; _i < clauses_1.length; _i++) {
          var clause = clauses_1[_i];
          if (clause.token === kind) {
            return clause;
          }
        }
      }
      return undefined;
    }
    ts.getHeritageClause = getHeritageClause;
    function tryResolveScriptReference(host, sourceFile, reference) {
      if (!host.getCompilerOptions().noResolve) {
        var referenceFileName = ts.isRootedDiskPath(reference.fileName) ? reference.fileName : ts.combinePaths(ts.getDirectoryPath(sourceFile.fileName), reference.fileName);
        return host.getSourceFile(referenceFileName);
      }
    }
    ts.tryResolveScriptReference = tryResolveScriptReference;
    function getAncestor(node, kind) {
      while (node) {
        if (node.kind === kind) {
          return node;
        }
        node = node.parent;
      }
      return undefined;
    }
    ts.getAncestor = getAncestor;
    function getFileReferenceFromReferencePath(comment, commentRange) {
      var simpleReferenceRegEx = /^\/\/\/\s*<reference\s+/gim;
      var isNoDefaultLibRegEx = /^(\/\/\/\s*<reference\s+no-default-lib\s*=\s*)('|")(.+?)\2\s*\/>/gim;
      if (simpleReferenceRegEx.test(comment)) {
        if (isNoDefaultLibRegEx.test(comment)) {
          return {isNoDefaultLib: true};
        } else {
          var matchResult = ts.fullTripleSlashReferencePathRegEx.exec(comment);
          if (matchResult) {
            var start = commentRange.pos;
            var end = commentRange.end;
            return {
              fileReference: {
                pos: start,
                end: end,
                fileName: matchResult[3]
              },
              isNoDefaultLib: false
            };
          } else {
            return {
              diagnosticMessage: ts.Diagnostics.Invalid_reference_directive_syntax,
              isNoDefaultLib: false
            };
          }
        }
      }
      return undefined;
    }
    ts.getFileReferenceFromReferencePath = getFileReferenceFromReferencePath;
    function isKeyword(token) {
      return 70 <= token && token <= 135;
    }
    ts.isKeyword = isKeyword;
    function isTrivia(token) {
      return 2 <= token && token <= 7;
    }
    ts.isTrivia = isTrivia;
    function isAsyncFunctionLike(node) {
      return isFunctionLike(node) && (node.flags & 256) !== 0 && !isAccessor(node);
    }
    ts.isAsyncFunctionLike = isAsyncFunctionLike;
    function isStringOrNumericLiteral(kind) {
      return kind === 9 || kind === 8;
    }
    ts.isStringOrNumericLiteral = isStringOrNumericLiteral;
    function hasDynamicName(declaration) {
      return declaration.name && isDynamicName(declaration.name);
    }
    ts.hasDynamicName = hasDynamicName;
    function isDynamicName(name) {
      return name.kind === 137 && !isStringOrNumericLiteral(name.expression.kind) && !isWellKnownSymbolSyntactically(name.expression);
    }
    ts.isDynamicName = isDynamicName;
    function isWellKnownSymbolSyntactically(node) {
      return isPropertyAccessExpression(node) && isESSymbolIdentifier(node.expression);
    }
    ts.isWellKnownSymbolSyntactically = isWellKnownSymbolSyntactically;
    function getPropertyNameForPropertyNameNode(name) {
      if (name.kind === 69 || name.kind === 9 || name.kind === 8) {
        return name.text;
      }
      if (name.kind === 137) {
        var nameExpression = name.expression;
        if (isWellKnownSymbolSyntactically(nameExpression)) {
          var rightHandSideName = nameExpression.name.text;
          return getPropertyNameForKnownSymbolName(rightHandSideName);
        }
      }
      return undefined;
    }
    ts.getPropertyNameForPropertyNameNode = getPropertyNameForPropertyNameNode;
    function getPropertyNameForKnownSymbolName(symbolName) {
      return "__@" + symbolName;
    }
    ts.getPropertyNameForKnownSymbolName = getPropertyNameForKnownSymbolName;
    function isESSymbolIdentifier(node) {
      return node.kind === 69 && node.text === "Symbol";
    }
    ts.isESSymbolIdentifier = isESSymbolIdentifier;
    function isModifierKind(token) {
      switch (token) {
        case 115:
        case 118:
        case 74:
        case 122:
        case 77:
        case 82:
        case 112:
        case 110:
        case 111:
        case 113:
          return true;
      }
      return false;
    }
    ts.isModifierKind = isModifierKind;
    function isParameterDeclaration(node) {
      var root = getRootDeclaration(node);
      return root.kind === 139;
    }
    ts.isParameterDeclaration = isParameterDeclaration;
    function getRootDeclaration(node) {
      while (node.kind === 166) {
        node = node.parent.parent;
      }
      return node;
    }
    ts.getRootDeclaration = getRootDeclaration;
    function nodeStartsNewLexicalEnvironment(n) {
      return isFunctionLike(n) || n.kind === 221 || n.kind === 251;
    }
    ts.nodeStartsNewLexicalEnvironment = nodeStartsNewLexicalEnvironment;
    function cloneNode(node, location, flags, parent) {
      var clone = location !== undefined ? ts.createNode(node.kind, location.pos, location.end) : createSynthesizedNode(node.kind);
      for (var key in node) {
        if (clone.hasOwnProperty(key) || !node.hasOwnProperty(key)) {
          continue;
        }
        clone[key] = node[key];
      }
      if (flags !== undefined) {
        clone.flags = flags;
      }
      if (parent !== undefined) {
        clone.parent = parent;
      }
      return clone;
    }
    ts.cloneNode = cloneNode;
    function cloneEntityName(node, parent) {
      var clone = cloneNode(node, node, node.flags, parent);
      if (isQualifiedName(clone)) {
        var left = clone.left,
            right = clone.right;
        clone.left = cloneEntityName(left, clone);
        clone.right = cloneNode(right, right, right.flags, parent);
      }
      return clone;
    }
    ts.cloneEntityName = cloneEntityName;
    function isQualifiedName(node) {
      return node.kind === 136;
    }
    ts.isQualifiedName = isQualifiedName;
    function nodeIsSynthesized(node) {
      return node.pos === -1;
    }
    ts.nodeIsSynthesized = nodeIsSynthesized;
    function createSynthesizedNode(kind, startsOnNewLine) {
      var node = ts.createNode(kind, -1, -1);
      node.startsOnNewLine = startsOnNewLine;
      return node;
    }
    ts.createSynthesizedNode = createSynthesizedNode;
    function createSynthesizedNodeArray() {
      var array = [];
      array.pos = -1;
      array.end = -1;
      return array;
    }
    ts.createSynthesizedNodeArray = createSynthesizedNodeArray;
    function createDiagnosticCollection() {
      var nonFileDiagnostics = [];
      var fileDiagnostics = {};
      var diagnosticsModified = false;
      var modificationCount = 0;
      return {
        add: add,
        getGlobalDiagnostics: getGlobalDiagnostics,
        getDiagnostics: getDiagnostics,
        getModificationCount: getModificationCount,
        reattachFileDiagnostics: reattachFileDiagnostics
      };
      function getModificationCount() {
        return modificationCount;
      }
      function reattachFileDiagnostics(newFile) {
        if (!ts.hasProperty(fileDiagnostics, newFile.fileName)) {
          return;
        }
        for (var _i = 0,
            _a = fileDiagnostics[newFile.fileName]; _i < _a.length; _i++) {
          var diagnostic = _a[_i];
          diagnostic.file = newFile;
        }
      }
      function add(diagnostic) {
        var diagnostics;
        if (diagnostic.file) {
          diagnostics = fileDiagnostics[diagnostic.file.fileName];
          if (!diagnostics) {
            diagnostics = [];
            fileDiagnostics[diagnostic.file.fileName] = diagnostics;
          }
        } else {
          diagnostics = nonFileDiagnostics;
        }
        diagnostics.push(diagnostic);
        diagnosticsModified = true;
        modificationCount++;
      }
      function getGlobalDiagnostics() {
        sortAndDeduplicate();
        return nonFileDiagnostics;
      }
      function getDiagnostics(fileName) {
        sortAndDeduplicate();
        if (fileName) {
          return fileDiagnostics[fileName] || [];
        }
        var allDiagnostics = [];
        function pushDiagnostic(d) {
          allDiagnostics.push(d);
        }
        ts.forEach(nonFileDiagnostics, pushDiagnostic);
        for (var key in fileDiagnostics) {
          if (ts.hasProperty(fileDiagnostics, key)) {
            ts.forEach(fileDiagnostics[key], pushDiagnostic);
          }
        }
        return ts.sortAndDeduplicateDiagnostics(allDiagnostics);
      }
      function sortAndDeduplicate() {
        if (!diagnosticsModified) {
          return;
        }
        diagnosticsModified = false;
        nonFileDiagnostics = ts.sortAndDeduplicateDiagnostics(nonFileDiagnostics);
        for (var key in fileDiagnostics) {
          if (ts.hasProperty(fileDiagnostics, key)) {
            fileDiagnostics[key] = ts.sortAndDeduplicateDiagnostics(fileDiagnostics[key]);
          }
        }
      }
    }
    ts.createDiagnosticCollection = createDiagnosticCollection;
    var escapedCharsRegExp = /[\\\"\u0000-\u001f\t\v\f\b\r\n\u2028\u2029\u0085]/g;
    var escapedCharsMap = {
      "\0": "\\0",
      "\t": "\\t",
      "\v": "\\v",
      "\f": "\\f",
      "\b": "\\b",
      "\r": "\\r",
      "\n": "\\n",
      "\\": "\\\\",
      "\"": "\\\"",
      "\u2028": "\\u2028",
      "\u2029": "\\u2029",
      "\u0085": "\\u0085"
    };
    function escapeString(s) {
      s = escapedCharsRegExp.test(s) ? s.replace(escapedCharsRegExp, getReplacement) : s;
      return s;
      function getReplacement(c) {
        return escapedCharsMap[c] || get16BitUnicodeEscapeSequence(c.charCodeAt(0));
      }
    }
    ts.escapeString = escapeString;
    function isIntrinsicJsxName(name) {
      var ch = name.substr(0, 1);
      return ch.toLowerCase() === ch;
    }
    ts.isIntrinsicJsxName = isIntrinsicJsxName;
    function get16BitUnicodeEscapeSequence(charCode) {
      var hexCharCode = charCode.toString(16).toUpperCase();
      var paddedHexCode = ("0000" + hexCharCode).slice(-4);
      return "\\u" + paddedHexCode;
    }
    var nonAsciiCharacters = /[^\u0000-\u007F]/g;
    function escapeNonAsciiCharacters(s) {
      return nonAsciiCharacters.test(s) ? s.replace(nonAsciiCharacters, function(c) {
        return get16BitUnicodeEscapeSequence(c.charCodeAt(0));
      }) : s;
    }
    ts.escapeNonAsciiCharacters = escapeNonAsciiCharacters;
    var indentStrings = ["", "    "];
    function getIndentString(level) {
      if (indentStrings[level] === undefined) {
        indentStrings[level] = getIndentString(level - 1) + indentStrings[1];
      }
      return indentStrings[level];
    }
    ts.getIndentString = getIndentString;
    function getIndentSize() {
      return indentStrings[1].length;
    }
    ts.getIndentSize = getIndentSize;
    function createTextWriter(newLine) {
      var output;
      var indent;
      var lineStart;
      var lineCount;
      var linePos;
      function write(s) {
        if (s && s.length) {
          if (lineStart) {
            output += getIndentString(indent);
            lineStart = false;
          }
          output += s;
        }
      }
      function reset() {
        output = "";
        indent = 0;
        lineStart = true;
        lineCount = 0;
        linePos = 0;
      }
      function rawWrite(s) {
        if (s !== undefined) {
          if (lineStart) {
            lineStart = false;
          }
          output += s;
        }
      }
      function writeLiteral(s) {
        if (s && s.length) {
          write(s);
          var lineStartsOfS = ts.computeLineStarts(s);
          if (lineStartsOfS.length > 1) {
            lineCount = lineCount + lineStartsOfS.length - 1;
            linePos = output.length - s.length + ts.lastOrUndefined(lineStartsOfS);
          }
        }
      }
      function writeLine() {
        if (!lineStart) {
          output += newLine;
          lineCount++;
          linePos = output.length;
          lineStart = true;
        }
      }
      function writeTextOfNode(text, node) {
        write(getTextOfNodeFromSourceText(text, node));
      }
      reset();
      return {
        write: write,
        rawWrite: rawWrite,
        writeTextOfNode: writeTextOfNode,
        writeLiteral: writeLiteral,
        writeLine: writeLine,
        increaseIndent: function() {
          indent++;
        },
        decreaseIndent: function() {
          indent--;
        },
        getIndent: function() {
          return indent;
        },
        getTextPos: function() {
          return output.length;
        },
        getLine: function() {
          return lineCount + 1;
        },
        getColumn: function() {
          return lineStart ? indent * getIndentSize() + 1 : output.length - linePos + 1;
        },
        getText: function() {
          return output;
        },
        reset: reset
      };
    }
    ts.createTextWriter = createTextWriter;
    function getExternalModuleNameFromPath(host, fileName) {
      var getCanonicalFileName = function(f) {
        return host.getCanonicalFileName(f);
      };
      var dir = ts.toPath(host.getCommonSourceDirectory(), host.getCurrentDirectory(), getCanonicalFileName);
      var filePath = ts.getNormalizedAbsolutePath(fileName, host.getCurrentDirectory());
      var relativePath = ts.getRelativePathToDirectoryOrUrl(dir, filePath, dir, getCanonicalFileName, false);
      return ts.removeFileExtension(relativePath);
    }
    ts.getExternalModuleNameFromPath = getExternalModuleNameFromPath;
    function getOwnEmitOutputFilePath(sourceFile, host, extension) {
      var compilerOptions = host.getCompilerOptions();
      var emitOutputFilePathWithoutExtension;
      if (compilerOptions.outDir) {
        emitOutputFilePathWithoutExtension = ts.removeFileExtension(getSourceFilePathInNewDir(sourceFile, host, compilerOptions.outDir));
      } else {
        emitOutputFilePathWithoutExtension = ts.removeFileExtension(sourceFile.fileName);
      }
      return emitOutputFilePathWithoutExtension + extension;
    }
    ts.getOwnEmitOutputFilePath = getOwnEmitOutputFilePath;
    function getEmitScriptTarget(compilerOptions) {
      return compilerOptions.target || 0;
    }
    ts.getEmitScriptTarget = getEmitScriptTarget;
    function getEmitModuleKind(compilerOptions) {
      return typeof compilerOptions.module === "number" ? compilerOptions.module : getEmitScriptTarget(compilerOptions) === 2 ? 5 : 1;
    }
    ts.getEmitModuleKind = getEmitModuleKind;
    function forEachExpectedEmitFile(host, action, targetSourceFile) {
      var options = host.getCompilerOptions();
      if (options.outFile || options.out) {
        onBundledEmit(host);
      } else {
        var sourceFiles = targetSourceFile === undefined ? host.getSourceFiles() : [targetSourceFile];
        for (var _i = 0,
            sourceFiles_1 = sourceFiles; _i < sourceFiles_1.length; _i++) {
          var sourceFile = sourceFiles_1[_i];
          if (!isDeclarationFile(sourceFile)) {
            onSingleFileEmit(host, sourceFile);
          }
        }
      }
      function onSingleFileEmit(host, sourceFile) {
        var extension = ".js";
        if (options.jsx === 1) {
          if (isSourceFileJavaScript(sourceFile)) {
            if (ts.fileExtensionIs(sourceFile.fileName, ".jsx")) {
              extension = ".jsx";
            }
          } else if (sourceFile.languageVariant === 1) {
            extension = ".jsx";
          }
        }
        var jsFilePath = getOwnEmitOutputFilePath(sourceFile, host, extension);
        var emitFileNames = {
          jsFilePath: jsFilePath,
          sourceMapFilePath: getSourceMapFilePath(jsFilePath, options),
          declarationFilePath: !isSourceFileJavaScript(sourceFile) ? getDeclarationEmitFilePath(jsFilePath, options) : undefined
        };
        action(emitFileNames, [sourceFile], false);
      }
      function onBundledEmit(host) {
        var bundledSources = ts.filter(host.getSourceFiles(), function(sourceFile) {
          return !isDeclarationFile(sourceFile) && (!isExternalModule(sourceFile) || (getEmitModuleKind(options) && isExternalModule(sourceFile)));
        });
        if (bundledSources.length) {
          var jsFilePath = options.outFile || options.out;
          var emitFileNames = {
            jsFilePath: jsFilePath,
            sourceMapFilePath: getSourceMapFilePath(jsFilePath, options),
            declarationFilePath: getDeclarationEmitFilePath(jsFilePath, options)
          };
          action(emitFileNames, bundledSources, true);
        }
      }
      function getSourceMapFilePath(jsFilePath, options) {
        return options.sourceMap ? jsFilePath + ".map" : undefined;
      }
      function getDeclarationEmitFilePath(jsFilePath, options) {
        return options.declaration ? ts.removeFileExtension(jsFilePath) + ".d.ts" : undefined;
      }
    }
    ts.forEachExpectedEmitFile = forEachExpectedEmitFile;
    function getSourceFilePathInNewDir(sourceFile, host, newDirPath) {
      var sourceFilePath = ts.getNormalizedAbsolutePath(sourceFile.fileName, host.getCurrentDirectory());
      sourceFilePath = sourceFilePath.replace(host.getCommonSourceDirectory(), "");
      return ts.combinePaths(newDirPath, sourceFilePath);
    }
    ts.getSourceFilePathInNewDir = getSourceFilePathInNewDir;
    function writeFile(host, diagnostics, fileName, data, writeByteOrderMark) {
      host.writeFile(fileName, data, writeByteOrderMark, function(hostErrorMessage) {
        diagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Could_not_write_file_0_Colon_1, fileName, hostErrorMessage));
      });
    }
    ts.writeFile = writeFile;
    function getLineOfLocalPosition(currentSourceFile, pos) {
      return ts.getLineAndCharacterOfPosition(currentSourceFile, pos).line;
    }
    ts.getLineOfLocalPosition = getLineOfLocalPosition;
    function getLineOfLocalPositionFromLineMap(lineMap, pos) {
      return ts.computeLineAndCharacterOfPosition(lineMap, pos).line;
    }
    ts.getLineOfLocalPositionFromLineMap = getLineOfLocalPositionFromLineMap;
    function getFirstConstructorWithBody(node) {
      return ts.forEach(node.members, function(member) {
        if (member.kind === 145 && nodeIsPresent(member.body)) {
          return member;
        }
      });
    }
    ts.getFirstConstructorWithBody = getFirstConstructorWithBody;
    function getSetAccessorTypeAnnotationNode(accessor) {
      return accessor && accessor.parameters.length > 0 && accessor.parameters[0].type;
    }
    ts.getSetAccessorTypeAnnotationNode = getSetAccessorTypeAnnotationNode;
    function getAllAccessorDeclarations(declarations, accessor) {
      var firstAccessor;
      var secondAccessor;
      var getAccessor;
      var setAccessor;
      if (hasDynamicName(accessor)) {
        firstAccessor = accessor;
        if (accessor.kind === 146) {
          getAccessor = accessor;
        } else if (accessor.kind === 147) {
          setAccessor = accessor;
        } else {
          ts.Debug.fail("Accessor has wrong kind");
        }
      } else {
        ts.forEach(declarations, function(member) {
          if ((member.kind === 146 || member.kind === 147) && (member.flags & 64) === (accessor.flags & 64)) {
            var memberName = getPropertyNameForPropertyNameNode(member.name);
            var accessorName = getPropertyNameForPropertyNameNode(accessor.name);
            if (memberName === accessorName) {
              if (!firstAccessor) {
                firstAccessor = member;
              } else if (!secondAccessor) {
                secondAccessor = member;
              }
              if (member.kind === 146 && !getAccessor) {
                getAccessor = member;
              }
              if (member.kind === 147 && !setAccessor) {
                setAccessor = member;
              }
            }
          }
        });
      }
      return {
        firstAccessor: firstAccessor,
        secondAccessor: secondAccessor,
        getAccessor: getAccessor,
        setAccessor: setAccessor
      };
    }
    ts.getAllAccessorDeclarations = getAllAccessorDeclarations;
    function emitNewLineBeforeLeadingComments(lineMap, writer, node, leadingComments) {
      if (leadingComments && leadingComments.length && node.pos !== leadingComments[0].pos && getLineOfLocalPositionFromLineMap(lineMap, node.pos) !== getLineOfLocalPositionFromLineMap(lineMap, leadingComments[0].pos)) {
        writer.writeLine();
      }
    }
    ts.emitNewLineBeforeLeadingComments = emitNewLineBeforeLeadingComments;
    function emitComments(text, lineMap, writer, comments, trailingSeparator, newLine, writeComment) {
      var emitLeadingSpace = !trailingSeparator;
      ts.forEach(comments, function(comment) {
        if (emitLeadingSpace) {
          writer.write(" ");
          emitLeadingSpace = false;
        }
        writeComment(text, lineMap, writer, comment, newLine);
        if (comment.hasTrailingNewLine) {
          writer.writeLine();
        } else if (trailingSeparator) {
          writer.write(" ");
        } else {
          emitLeadingSpace = true;
        }
      });
    }
    ts.emitComments = emitComments;
    function emitDetachedComments(text, lineMap, writer, writeComment, node, newLine, removeComments) {
      var leadingComments;
      var currentDetachedCommentInfo;
      if (removeComments) {
        if (node.pos === 0) {
          leadingComments = ts.filter(ts.getLeadingCommentRanges(text, node.pos), isPinnedComment);
        }
      } else {
        leadingComments = ts.getLeadingCommentRanges(text, node.pos);
      }
      if (leadingComments) {
        var detachedComments = [];
        var lastComment = void 0;
        for (var _i = 0,
            leadingComments_1 = leadingComments; _i < leadingComments_1.length; _i++) {
          var comment = leadingComments_1[_i];
          if (lastComment) {
            var lastCommentLine = getLineOfLocalPositionFromLineMap(lineMap, lastComment.end);
            var commentLine = getLineOfLocalPositionFromLineMap(lineMap, comment.pos);
            if (commentLine >= lastCommentLine + 2) {
              break;
            }
          }
          detachedComments.push(comment);
          lastComment = comment;
        }
        if (detachedComments.length) {
          var lastCommentLine = getLineOfLocalPositionFromLineMap(lineMap, ts.lastOrUndefined(detachedComments).end);
          var nodeLine = getLineOfLocalPositionFromLineMap(lineMap, ts.skipTrivia(text, node.pos));
          if (nodeLine >= lastCommentLine + 2) {
            emitNewLineBeforeLeadingComments(lineMap, writer, node, leadingComments);
            emitComments(text, lineMap, writer, detachedComments, true, newLine, writeComment);
            currentDetachedCommentInfo = {
              nodePos: node.pos,
              detachedCommentEndPos: ts.lastOrUndefined(detachedComments).end
            };
          }
        }
      }
      return currentDetachedCommentInfo;
      function isPinnedComment(comment) {
        return text.charCodeAt(comment.pos + 1) === 42 && text.charCodeAt(comment.pos + 2) === 33;
      }
    }
    ts.emitDetachedComments = emitDetachedComments;
    function writeCommentRange(text, lineMap, writer, comment, newLine) {
      if (text.charCodeAt(comment.pos + 1) === 42) {
        var firstCommentLineAndCharacter = ts.computeLineAndCharacterOfPosition(lineMap, comment.pos);
        var lineCount = lineMap.length;
        var firstCommentLineIndent = void 0;
        for (var pos = comment.pos,
            currentLine = firstCommentLineAndCharacter.line; pos < comment.end; currentLine++) {
          var nextLineStart = (currentLine + 1) === lineCount ? text.length + 1 : lineMap[currentLine + 1];
          if (pos !== comment.pos) {
            if (firstCommentLineIndent === undefined) {
              firstCommentLineIndent = calculateIndent(text, lineMap[firstCommentLineAndCharacter.line], comment.pos);
            }
            var currentWriterIndentSpacing = writer.getIndent() * getIndentSize();
            var spacesToEmit = currentWriterIndentSpacing - firstCommentLineIndent + calculateIndent(text, pos, nextLineStart);
            if (spacesToEmit > 0) {
              var numberOfSingleSpacesToEmit = spacesToEmit % getIndentSize();
              var indentSizeSpaceString = getIndentString((spacesToEmit - numberOfSingleSpacesToEmit) / getIndentSize());
              writer.rawWrite(indentSizeSpaceString);
              while (numberOfSingleSpacesToEmit) {
                writer.rawWrite(" ");
                numberOfSingleSpacesToEmit--;
              }
            } else {
              writer.rawWrite("");
            }
          }
          writeTrimmedCurrentLine(text, comment, writer, newLine, pos, nextLineStart);
          pos = nextLineStart;
        }
      } else {
        writer.write(text.substring(comment.pos, comment.end));
      }
    }
    ts.writeCommentRange = writeCommentRange;
    function writeTrimmedCurrentLine(text, comment, writer, newLine, pos, nextLineStart) {
      var end = Math.min(comment.end, nextLineStart - 1);
      var currentLineText = text.substring(pos, end).replace(/^\s+|\s+$/g, "");
      if (currentLineText) {
        writer.write(currentLineText);
        if (end !== comment.end) {
          writer.writeLine();
        }
      } else {
        writer.writeLiteral(newLine);
      }
    }
    function calculateIndent(text, pos, end) {
      var currentLineIndent = 0;
      for (; pos < end && ts.isWhiteSpace(text.charCodeAt(pos)); pos++) {
        if (text.charCodeAt(pos) === 9) {
          currentLineIndent += getIndentSize() - (currentLineIndent % getIndentSize());
        } else {
          currentLineIndent++;
        }
      }
      return currentLineIndent;
    }
    function modifierToFlag(token) {
      switch (token) {
        case 113:
          return 64;
        case 112:
          return 8;
        case 111:
          return 32;
        case 110:
          return 16;
        case 115:
          return 128;
        case 82:
          return 2;
        case 122:
          return 4;
        case 74:
          return 16384;
        case 77:
          return 512;
        case 118:
          return 256;
      }
      return 0;
    }
    ts.modifierToFlag = modifierToFlag;
    function isLeftHandSideExpression(expr) {
      if (expr) {
        switch (expr.kind) {
          case 169:
          case 170:
          case 172:
          case 171:
          case 236:
          case 237:
          case 173:
          case 167:
          case 175:
          case 168:
          case 189:
          case 176:
          case 69:
          case 10:
          case 8:
          case 9:
          case 11:
          case 186:
          case 84:
          case 93:
          case 97:
          case 99:
          case 95:
            return true;
        }
      }
      return false;
    }
    ts.isLeftHandSideExpression = isLeftHandSideExpression;
    function isAssignmentOperator(token) {
      return token >= 56 && token <= 68;
    }
    ts.isAssignmentOperator = isAssignmentOperator;
    function isExpressionWithTypeArgumentsInClassExtendsClause(node) {
      return node.kind === 191 && node.parent.token === 83 && isClassLike(node.parent.parent);
    }
    ts.isExpressionWithTypeArgumentsInClassExtendsClause = isExpressionWithTypeArgumentsInClassExtendsClause;
    function isSupportedExpressionWithTypeArguments(node) {
      return isSupportedExpressionWithTypeArgumentsRest(node.expression);
    }
    ts.isSupportedExpressionWithTypeArguments = isSupportedExpressionWithTypeArguments;
    function isSupportedExpressionWithTypeArgumentsRest(node) {
      if (node.kind === 69) {
        return true;
      } else if (isPropertyAccessExpression(node)) {
        return isSupportedExpressionWithTypeArgumentsRest(node.expression);
      } else {
        return false;
      }
    }
    function isRightSideOfQualifiedNameOrPropertyAccess(node) {
      return (node.parent.kind === 136 && node.parent.right === node) || (node.parent.kind === 169 && node.parent.name === node);
    }
    ts.isRightSideOfQualifiedNameOrPropertyAccess = isRightSideOfQualifiedNameOrPropertyAccess;
    function isEmptyObjectLiteralOrArrayLiteral(expression) {
      var kind = expression.kind;
      if (kind === 168) {
        return expression.properties.length === 0;
      }
      if (kind === 167) {
        return expression.elements.length === 0;
      }
      return false;
    }
    ts.isEmptyObjectLiteralOrArrayLiteral = isEmptyObjectLiteralOrArrayLiteral;
    function getLocalSymbolForExportDefault(symbol) {
      return symbol && symbol.valueDeclaration && (symbol.valueDeclaration.flags & 512) ? symbol.valueDeclaration.localSymbol : undefined;
    }
    ts.getLocalSymbolForExportDefault = getLocalSymbolForExportDefault;
    function hasJavaScriptFileExtension(fileName) {
      return ts.forEach(ts.supportedJavascriptExtensions, function(extension) {
        return ts.fileExtensionIs(fileName, extension);
      });
    }
    ts.hasJavaScriptFileExtension = hasJavaScriptFileExtension;
    function hasTypeScriptFileExtension(fileName) {
      return ts.forEach(ts.supportedTypeScriptExtensions, function(extension) {
        return ts.fileExtensionIs(fileName, extension);
      });
    }
    ts.hasTypeScriptFileExtension = hasTypeScriptFileExtension;
    function getExpandedCharCodes(input) {
      var output = [];
      var length = input.length;
      for (var i = 0; i < length; i++) {
        var charCode = input.charCodeAt(i);
        if (charCode < 0x80) {
          output.push(charCode);
        } else if (charCode < 0x800) {
          output.push((charCode >> 6) | 192);
          output.push((charCode & 63) | 128);
        } else if (charCode < 0x10000) {
          output.push((charCode >> 12) | 224);
          output.push(((charCode >> 6) & 63) | 128);
          output.push((charCode & 63) | 128);
        } else if (charCode < 0x20000) {
          output.push((charCode >> 18) | 240);
          output.push(((charCode >> 12) & 63) | 128);
          output.push(((charCode >> 6) & 63) | 128);
          output.push((charCode & 63) | 128);
        } else {
          ts.Debug.assert(false, "Unexpected code point");
        }
      }
      return output;
    }
    ts.stringify = typeof JSON !== "undefined" && JSON.stringify ? JSON.stringify : stringifyFallback;
    function stringifyFallback(value) {
      return value === undefined ? undefined : stringifyValue(value);
    }
    function stringifyValue(value) {
      return typeof value === "string" ? "\"" + escapeString(value) + "\"" : typeof value === "number" ? isFinite(value) ? String(value) : "null" : typeof value === "boolean" ? value ? "true" : "false" : typeof value === "object" && value ? ts.isArray(value) ? cycleCheck(stringifyArray, value) : cycleCheck(stringifyObject, value) : "null";
    }
    function cycleCheck(cb, value) {
      ts.Debug.assert(!value.hasOwnProperty("__cycle"), "Converting circular structure to JSON");
      value.__cycle = true;
      var result = cb(value);
      delete value.__cycle;
      return result;
    }
    function stringifyArray(value) {
      return "[" + ts.reduceLeft(value, stringifyElement, "") + "]";
    }
    function stringifyElement(memo, value) {
      return (memo ? memo + "," : memo) + stringifyValue(value);
    }
    function stringifyObject(value) {
      return "{" + ts.reduceProperties(value, stringifyProperty, "") + "}";
    }
    function stringifyProperty(memo, value, key) {
      return value === undefined || typeof value === "function" || key === "__cycle" ? memo : (memo ? memo + "," : memo) + ("\"" + escapeString(key) + "\":" + stringifyValue(value));
    }
    var base64Digits = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
    function convertToBase64(input) {
      var result = "";
      var charCodes = getExpandedCharCodes(input);
      var i = 0;
      var length = charCodes.length;
      var byte1,
          byte2,
          byte3,
          byte4;
      while (i < length) {
        byte1 = charCodes[i] >> 2;
        byte2 = (charCodes[i] & 3) << 4 | charCodes[i + 1] >> 4;
        byte3 = (charCodes[i + 1] & 15) << 2 | charCodes[i + 2] >> 6;
        byte4 = charCodes[i + 2] & 63;
        if (i + 1 >= length) {
          byte3 = byte4 = 64;
        } else if (i + 2 >= length) {
          byte4 = 64;
        }
        result += base64Digits.charAt(byte1) + base64Digits.charAt(byte2) + base64Digits.charAt(byte3) + base64Digits.charAt(byte4);
        i += 3;
      }
      return result;
    }
    ts.convertToBase64 = convertToBase64;
    function convertToRelativePath(absoluteOrRelativePath, basePath, getCanonicalFileName) {
      return !ts.isRootedDiskPath(absoluteOrRelativePath) ? absoluteOrRelativePath : ts.getRelativePathToDirectoryOrUrl(basePath, absoluteOrRelativePath, basePath, getCanonicalFileName, false);
    }
    ts.convertToRelativePath = convertToRelativePath;
    var carriageReturnLineFeed = "\r\n";
    var lineFeed = "\n";
    function getNewLineCharacter(options) {
      if (options.newLine === 0) {
        return carriageReturnLineFeed;
      } else if (options.newLine === 1) {
        return lineFeed;
      } else if (ts.sys) {
        return ts.sys.newLine;
      }
      return carriageReturnLineFeed;
    }
    ts.getNewLineCharacter = getNewLineCharacter;
  })(ts || (ts = {}));
  var ts;
  (function(ts) {
    function getDefaultLibFileName(options) {
      return options.target === 2 ? "lib.es6.d.ts" : "lib.d.ts";
    }
    ts.getDefaultLibFileName = getDefaultLibFileName;
    function textSpanEnd(span) {
      return span.start + span.length;
    }
    ts.textSpanEnd = textSpanEnd;
    function textSpanIsEmpty(span) {
      return span.length === 0;
    }
    ts.textSpanIsEmpty = textSpanIsEmpty;
    function textSpanContainsPosition(span, position) {
      return position >= span.start && position < textSpanEnd(span);
    }
    ts.textSpanContainsPosition = textSpanContainsPosition;
    function textSpanContainsTextSpan(span, other) {
      return other.start >= span.start && textSpanEnd(other) <= textSpanEnd(span);
    }
    ts.textSpanContainsTextSpan = textSpanContainsTextSpan;
    function textSpanOverlapsWith(span, other) {
      var overlapStart = Math.max(span.start, other.start);
      var overlapEnd = Math.min(textSpanEnd(span), textSpanEnd(other));
      return overlapStart < overlapEnd;
    }
    ts.textSpanOverlapsWith = textSpanOverlapsWith;
    function textSpanOverlap(span1, span2) {
      var overlapStart = Math.max(span1.start, span2.start);
      var overlapEnd = Math.min(textSpanEnd(span1), textSpanEnd(span2));
      if (overlapStart < overlapEnd) {
        return createTextSpanFromBounds(overlapStart, overlapEnd);
      }
      return undefined;
    }
    ts.textSpanOverlap = textSpanOverlap;
    function textSpanIntersectsWithTextSpan(span, other) {
      return other.start <= textSpanEnd(span) && textSpanEnd(other) >= span.start;
    }
    ts.textSpanIntersectsWithTextSpan = textSpanIntersectsWithTextSpan;
    function textSpanIntersectsWith(span, start, length) {
      var end = start + length;
      return start <= textSpanEnd(span) && end >= span.start;
    }
    ts.textSpanIntersectsWith = textSpanIntersectsWith;
    function decodedTextSpanIntersectsWith(start1, length1, start2, length2) {
      var end1 = start1 + length1;
      var end2 = start2 + length2;
      return start2 <= end1 && end2 >= start1;
    }
    ts.decodedTextSpanIntersectsWith = decodedTextSpanIntersectsWith;
    function textSpanIntersectsWithPosition(span, position) {
      return position <= textSpanEnd(span) && position >= span.start;
    }
    ts.textSpanIntersectsWithPosition = textSpanIntersectsWithPosition;
    function textSpanIntersection(span1, span2) {
      var intersectStart = Math.max(span1.start, span2.start);
      var intersectEnd = Math.min(textSpanEnd(span1), textSpanEnd(span2));
      if (intersectStart <= intersectEnd) {
        return createTextSpanFromBounds(intersectStart, intersectEnd);
      }
      return undefined;
    }
    ts.textSpanIntersection = textSpanIntersection;
    function createTextSpan(start, length) {
      if (start < 0) {
        throw new Error("start < 0");
      }
      if (length < 0) {
        throw new Error("length < 0");
      }
      return {
        start: start,
        length: length
      };
    }
    ts.createTextSpan = createTextSpan;
    function createTextSpanFromBounds(start, end) {
      return createTextSpan(start, end - start);
    }
    ts.createTextSpanFromBounds = createTextSpanFromBounds;
    function textChangeRangeNewSpan(range) {
      return createTextSpan(range.span.start, range.newLength);
    }
    ts.textChangeRangeNewSpan = textChangeRangeNewSpan;
    function textChangeRangeIsUnchanged(range) {
      return textSpanIsEmpty(range.span) && range.newLength === 0;
    }
    ts.textChangeRangeIsUnchanged = textChangeRangeIsUnchanged;
    function createTextChangeRange(span, newLength) {
      if (newLength < 0) {
        throw new Error("newLength < 0");
      }
      return {
        span: span,
        newLength: newLength
      };
    }
    ts.createTextChangeRange = createTextChangeRange;
    ts.unchangedTextChangeRange = createTextChangeRange(createTextSpan(0, 0), 0);
    function collapseTextChangeRangesAcrossMultipleVersions(changes) {
      if (changes.length === 0) {
        return ts.unchangedTextChangeRange;
      }
      if (changes.length === 1) {
        return changes[0];
      }
      var change0 = changes[0];
      var oldStartN = change0.span.start;
      var oldEndN = textSpanEnd(change0.span);
      var newEndN = oldStartN + change0.newLength;
      for (var i = 1; i < changes.length; i++) {
        var nextChange = changes[i];
        var oldStart1 = oldStartN;
        var oldEnd1 = oldEndN;
        var newEnd1 = newEndN;
        var oldStart2 = nextChange.span.start;
        var oldEnd2 = textSpanEnd(nextChange.span);
        var newEnd2 = oldStart2 + nextChange.newLength;
        oldStartN = Math.min(oldStart1, oldStart2);
        oldEndN = Math.max(oldEnd1, oldEnd1 + (oldEnd2 - newEnd1));
        newEndN = Math.max(newEnd2, newEnd2 + (newEnd1 - oldEnd2));
      }
      return createTextChangeRange(createTextSpanFromBounds(oldStartN, oldEndN), newEndN - oldStartN);
    }
    ts.collapseTextChangeRangesAcrossMultipleVersions = collapseTextChangeRangesAcrossMultipleVersions;
    function getTypeParameterOwner(d) {
      if (d && d.kind === 138) {
        for (var current = d; current; current = current.parent) {
          if (ts.isFunctionLike(current) || ts.isClassLike(current) || current.kind === 218) {
            return current;
          }
        }
      }
    }
    ts.getTypeParameterOwner = getTypeParameterOwner;
    function isParameterPropertyDeclaration(node) {
      return node.flags & 56 && node.parent.kind === 145 && ts.isClassLike(node.parent.parent);
    }
    ts.isParameterPropertyDeclaration = isParameterPropertyDeclaration;
  })(ts || (ts = {}));
  var ts;
  (function(ts) {
    ts.parseTime = 0;
    var NodeConstructor;
    var SourceFileConstructor;
    function createNode(kind, pos, end) {
      if (kind === 251) {
        return new (SourceFileConstructor || (SourceFileConstructor = ts.objectAllocator.getSourceFileConstructor()))(kind, pos, end);
      } else {
        return new (NodeConstructor || (NodeConstructor = ts.objectAllocator.getNodeConstructor()))(kind, pos, end);
      }
    }
    ts.createNode = createNode;
    function visitNode(cbNode, node) {
      if (node) {
        return cbNode(node);
      }
    }
    function visitNodeArray(cbNodes, nodes) {
      if (nodes) {
        return cbNodes(nodes);
      }
    }
    function visitEachNode(cbNode, nodes) {
      if (nodes) {
        for (var _i = 0,
            nodes_1 = nodes; _i < nodes_1.length; _i++) {
          var node = nodes_1[_i];
          var result = cbNode(node);
          if (result) {
            return result;
          }
        }
      }
    }
    function forEachChild(node, cbNode, cbNodeArray) {
      if (!node) {
        return;
      }
      var visitNodes = cbNodeArray ? visitNodeArray : visitEachNode;
      var cbNodes = cbNodeArray || cbNode;
      switch (node.kind) {
        case 136:
          return visitNode(cbNode, node.left) || visitNode(cbNode, node.right);
        case 138:
          return visitNode(cbNode, node.name) || visitNode(cbNode, node.constraint) || visitNode(cbNode, node.expression);
        case 249:
          return visitNodes(cbNodes, node.decorators) || visitNodes(cbNodes, node.modifiers) || visitNode(cbNode, node.name) || visitNode(cbNode, node.questionToken) || visitNode(cbNode, node.equalsToken) || visitNode(cbNode, node.objectAssignmentInitializer);
        case 139:
        case 142:
        case 141:
        case 248:
        case 214:
        case 166:
          return visitNodes(cbNodes, node.decorators) || visitNodes(cbNodes, node.modifiers) || visitNode(cbNode, node.propertyName) || visitNode(cbNode, node.dotDotDotToken) || visitNode(cbNode, node.name) || visitNode(cbNode, node.questionToken) || visitNode(cbNode, node.type) || visitNode(cbNode, node.initializer);
        case 153:
        case 154:
        case 148:
        case 149:
        case 150:
          return visitNodes(cbNodes, node.decorators) || visitNodes(cbNodes, node.modifiers) || visitNodes(cbNodes, node.typeParameters) || visitNodes(cbNodes, node.parameters) || visitNode(cbNode, node.type);
        case 144:
        case 143:
        case 145:
        case 146:
        case 147:
        case 176:
        case 216:
        case 177:
          return visitNodes(cbNodes, node.decorators) || visitNodes(cbNodes, node.modifiers) || visitNode(cbNode, node.asteriskToken) || visitNode(cbNode, node.name) || visitNode(cbNode, node.questionToken) || visitNodes(cbNodes, node.typeParameters) || visitNodes(cbNodes, node.parameters) || visitNode(cbNode, node.type) || visitNode(cbNode, node.equalsGreaterThanToken) || visitNode(cbNode, node.body);
        case 152:
          return visitNode(cbNode, node.typeName) || visitNodes(cbNodes, node.typeArguments);
        case 151:
          return visitNode(cbNode, node.parameterName) || visitNode(cbNode, node.type);
        case 155:
          return visitNode(cbNode, node.exprName);
        case 156:
          return visitNodes(cbNodes, node.members);
        case 157:
          return visitNode(cbNode, node.elementType);
        case 158:
          return visitNodes(cbNodes, node.elementTypes);
        case 159:
        case 160:
          return visitNodes(cbNodes, node.types);
        case 161:
          return visitNode(cbNode, node.type);
        case 164:
        case 165:
          return visitNodes(cbNodes, node.elements);
        case 167:
          return visitNodes(cbNodes, node.elements);
        case 168:
          return visitNodes(cbNodes, node.properties);
        case 169:
          return visitNode(cbNode, node.expression) || visitNode(cbNode, node.dotToken) || visitNode(cbNode, node.name);
        case 170:
          return visitNode(cbNode, node.expression) || visitNode(cbNode, node.argumentExpression);
        case 171:
        case 172:
          return visitNode(cbNode, node.expression) || visitNodes(cbNodes, node.typeArguments) || visitNodes(cbNodes, node.arguments);
        case 173:
          return visitNode(cbNode, node.tag) || visitNode(cbNode, node.template);
        case 174:
          return visitNode(cbNode, node.type) || visitNode(cbNode, node.expression);
        case 175:
          return visitNode(cbNode, node.expression);
        case 178:
          return visitNode(cbNode, node.expression);
        case 179:
          return visitNode(cbNode, node.expression);
        case 180:
          return visitNode(cbNode, node.expression);
        case 182:
          return visitNode(cbNode, node.operand);
        case 187:
          return visitNode(cbNode, node.asteriskToken) || visitNode(cbNode, node.expression);
        case 181:
          return visitNode(cbNode, node.expression);
        case 183:
          return visitNode(cbNode, node.operand);
        case 184:
          return visitNode(cbNode, node.left) || visitNode(cbNode, node.operatorToken) || visitNode(cbNode, node.right);
        case 192:
          return visitNode(cbNode, node.expression) || visitNode(cbNode, node.type);
        case 185:
          return visitNode(cbNode, node.condition) || visitNode(cbNode, node.questionToken) || visitNode(cbNode, node.whenTrue) || visitNode(cbNode, node.colonToken) || visitNode(cbNode, node.whenFalse);
        case 188:
          return visitNode(cbNode, node.expression);
        case 195:
        case 222:
          return visitNodes(cbNodes, node.statements);
        case 251:
          return visitNodes(cbNodes, node.statements) || visitNode(cbNode, node.endOfFileToken);
        case 196:
          return visitNodes(cbNodes, node.decorators) || visitNodes(cbNodes, node.modifiers) || visitNode(cbNode, node.declarationList);
        case 215:
          return visitNodes(cbNodes, node.declarations);
        case 198:
          return visitNode(cbNode, node.expression);
        case 199:
          return visitNode(cbNode, node.expression) || visitNode(cbNode, node.thenStatement) || visitNode(cbNode, node.elseStatement);
        case 200:
          return visitNode(cbNode, node.statement) || visitNode(cbNode, node.expression);
        case 201:
          return visitNode(cbNode, node.expression) || visitNode(cbNode, node.statement);
        case 202:
          return visitNode(cbNode, node.initializer) || visitNode(cbNode, node.condition) || visitNode(cbNode, node.incrementor) || visitNode(cbNode, node.statement);
        case 203:
          return visitNode(cbNode, node.initializer) || visitNode(cbNode, node.expression) || visitNode(cbNode, node.statement);
        case 204:
          return visitNode(cbNode, node.initializer) || visitNode(cbNode, node.expression) || visitNode(cbNode, node.statement);
        case 205:
        case 206:
          return visitNode(cbNode, node.label);
        case 207:
          return visitNode(cbNode, node.expression);
        case 208:
          return visitNode(cbNode, node.expression) || visitNode(cbNode, node.statement);
        case 209:
          return visitNode(cbNode, node.expression) || visitNode(cbNode, node.caseBlock);
        case 223:
          return visitNodes(cbNodes, node.clauses);
        case 244:
          return visitNode(cbNode, node.expression) || visitNodes(cbNodes, node.statements);
        case 245:
          return visitNodes(cbNodes, node.statements);
        case 210:
          return visitNode(cbNode, node.label) || visitNode(cbNode, node.statement);
        case 211:
          return visitNode(cbNode, node.expression);
        case 212:
          return visitNode(cbNode, node.tryBlock) || visitNode(cbNode, node.catchClause) || visitNode(cbNode, node.finallyBlock);
        case 247:
          return visitNode(cbNode, node.variableDeclaration) || visitNode(cbNode, node.block);
        case 140:
          return visitNode(cbNode, node.expression);
        case 217:
        case 189:
          return visitNodes(cbNodes, node.decorators) || visitNodes(cbNodes, node.modifiers) || visitNode(cbNode, node.name) || visitNodes(cbNodes, node.typeParameters) || visitNodes(cbNodes, node.heritageClauses) || visitNodes(cbNodes, node.members);
        case 218:
          return visitNodes(cbNodes, node.decorators) || visitNodes(cbNodes, node.modifiers) || visitNode(cbNode, node.name) || visitNodes(cbNodes, node.typeParameters) || visitNodes(cbNodes, node.heritageClauses) || visitNodes(cbNodes, node.members);
        case 219:
          return visitNodes(cbNodes, node.decorators) || visitNodes(cbNodes, node.modifiers) || visitNode(cbNode, node.name) || visitNodes(cbNodes, node.typeParameters) || visitNode(cbNode, node.type);
        case 220:
          return visitNodes(cbNodes, node.decorators) || visitNodes(cbNodes, node.modifiers) || visitNode(cbNode, node.name) || visitNodes(cbNodes, node.members);
        case 250:
          return visitNode(cbNode, node.name) || visitNode(cbNode, node.initializer);
        case 221:
          return visitNodes(cbNodes, node.decorators) || visitNodes(cbNodes, node.modifiers) || visitNode(cbNode, node.name) || visitNode(cbNode, node.body);
        case 224:
          return visitNodes(cbNodes, node.decorators) || visitNodes(cbNodes, node.modifiers) || visitNode(cbNode, node.name) || visitNode(cbNode, node.moduleReference);
        case 225:
          return visitNodes(cbNodes, node.decorators) || visitNodes(cbNodes, node.modifiers) || visitNode(cbNode, node.importClause) || visitNode(cbNode, node.moduleSpecifier);
        case 226:
          return visitNode(cbNode, node.name) || visitNode(cbNode, node.namedBindings);
        case 227:
          return visitNode(cbNode, node.name);
        case 228:
        case 232:
          return visitNodes(cbNodes, node.elements);
        case 231:
          return visitNodes(cbNodes, node.decorators) || visitNodes(cbNodes, node.modifiers) || visitNode(cbNode, node.exportClause) || visitNode(cbNode, node.moduleSpecifier);
        case 229:
        case 233:
          return visitNode(cbNode, node.propertyName) || visitNode(cbNode, node.name);
        case 230:
          return visitNodes(cbNodes, node.decorators) || visitNodes(cbNodes, node.modifiers) || visitNode(cbNode, node.expression);
        case 186:
          return visitNode(cbNode, node.head) || visitNodes(cbNodes, node.templateSpans);
        case 193:
          return visitNode(cbNode, node.expression) || visitNode(cbNode, node.literal);
        case 137:
          return visitNode(cbNode, node.expression);
        case 246:
          return visitNodes(cbNodes, node.types);
        case 191:
          return visitNode(cbNode, node.expression) || visitNodes(cbNodes, node.typeArguments);
        case 235:
          return visitNode(cbNode, node.expression);
        case 234:
          return visitNodes(cbNodes, node.decorators);
        case 236:
          return visitNode(cbNode, node.openingElement) || visitNodes(cbNodes, node.children) || visitNode(cbNode, node.closingElement);
        case 237:
        case 238:
          return visitNode(cbNode, node.tagName) || visitNodes(cbNodes, node.attributes);
        case 241:
          return visitNode(cbNode, node.name) || visitNode(cbNode, node.initializer);
        case 242:
          return visitNode(cbNode, node.expression);
        case 243:
          return visitNode(cbNode, node.expression);
        case 240:
          return visitNode(cbNode, node.tagName);
        case 252:
          return visitNode(cbNode, node.type);
        case 256:
          return visitNodes(cbNodes, node.types);
        case 257:
          return visitNodes(cbNodes, node.types);
        case 255:
          return visitNode(cbNode, node.elementType);
        case 259:
          return visitNode(cbNode, node.type);
        case 258:
          return visitNode(cbNode, node.type);
        case 260:
          return visitNodes(cbNodes, node.members);
        case 262:
          return visitNode(cbNode, node.name) || visitNodes(cbNodes, node.typeArguments);
        case 263:
          return visitNode(cbNode, node.type);
        case 264:
          return visitNodes(cbNodes, node.parameters) || visitNode(cbNode, node.type);
        case 265:
          return visitNode(cbNode, node.type);
        case 266:
          return visitNode(cbNode, node.type);
        case 267:
          return visitNode(cbNode, node.type);
        case 261:
          return visitNode(cbNode, node.name) || visitNode(cbNode, node.type);
        case 268:
          return visitNodes(cbNodes, node.tags);
        case 270:
          return visitNode(cbNode, node.preParameterName) || visitNode(cbNode, node.typeExpression) || visitNode(cbNode, node.postParameterName);
        case 271:
          return visitNode(cbNode, node.typeExpression);
        case 272:
          return visitNode(cbNode, node.typeExpression);
        case 273:
          return visitNodes(cbNodes, node.typeParameters);
      }
    }
    ts.forEachChild = forEachChild;
    function createSourceFile(fileName, sourceText, languageVersion, setParentNodes, scriptKind) {
      if (setParentNodes === void 0) {
        setParentNodes = false;
      }
      var start = new Date().getTime();
      var result = Parser.parseSourceFile(fileName, sourceText, languageVersion, undefined, setParentNodes, scriptKind);
      ts.parseTime += new Date().getTime() - start;
      return result;
    }
    ts.createSourceFile = createSourceFile;
    function updateSourceFile(sourceFile, newText, textChangeRange, aggressiveChecks) {
      return IncrementalParser.updateSourceFile(sourceFile, newText, textChangeRange, aggressiveChecks);
    }
    ts.updateSourceFile = updateSourceFile;
    function parseIsolatedJSDocComment(content, start, length) {
      return Parser.JSDocParser.parseIsolatedJSDocComment(content, start, length);
    }
    ts.parseIsolatedJSDocComment = parseIsolatedJSDocComment;
    function parseJSDocTypeExpressionForTests(content, start, length) {
      return Parser.JSDocParser.parseJSDocTypeExpressionForTests(content, start, length);
    }
    ts.parseJSDocTypeExpressionForTests = parseJSDocTypeExpressionForTests;
    var Parser;
    (function(Parser) {
      var scanner = ts.createScanner(2, true);
      var disallowInAndDecoratorContext = 1 | 4;
      var NodeConstructor;
      var SourceFileConstructor;
      var sourceFile;
      var parseDiagnostics;
      var syntaxCursor;
      var token;
      var sourceText;
      var nodeCount;
      var identifiers;
      var identifierCount;
      var parsingContext;
      var contextFlags;
      var parseErrorBeforeNextFinishedNode = false;
      function parseSourceFile(fileName, _sourceText, languageVersion, _syntaxCursor, setParentNodes, scriptKind) {
        scriptKind = ts.ensureScriptKind(fileName, scriptKind);
        initializeState(fileName, _sourceText, languageVersion, _syntaxCursor, scriptKind);
        var result = parseSourceFileWorker(fileName, languageVersion, setParentNodes, scriptKind);
        clearState();
        return result;
      }
      Parser.parseSourceFile = parseSourceFile;
      function getLanguageVariant(scriptKind) {
        return scriptKind === 4 || scriptKind === 2 || scriptKind === 1 ? 1 : 0;
      }
      function initializeState(fileName, _sourceText, languageVersion, _syntaxCursor, scriptKind) {
        NodeConstructor = ts.objectAllocator.getNodeConstructor();
        SourceFileConstructor = ts.objectAllocator.getSourceFileConstructor();
        sourceText = _sourceText;
        syntaxCursor = _syntaxCursor;
        parseDiagnostics = [];
        parsingContext = 0;
        identifiers = {};
        identifierCount = 0;
        nodeCount = 0;
        contextFlags = scriptKind === 1 || scriptKind === 2 ? 32 : 0;
        parseErrorBeforeNextFinishedNode = false;
        scanner.setText(sourceText);
        scanner.setOnError(scanError);
        scanner.setScriptTarget(languageVersion);
        scanner.setLanguageVariant(getLanguageVariant(scriptKind));
      }
      function clearState() {
        scanner.setText("");
        scanner.setOnError(undefined);
        parseDiagnostics = undefined;
        sourceFile = undefined;
        identifiers = undefined;
        syntaxCursor = undefined;
        sourceText = undefined;
      }
      function parseSourceFileWorker(fileName, languageVersion, setParentNodes, scriptKind) {
        sourceFile = createSourceFile(fileName, languageVersion, scriptKind);
        if (contextFlags & 32) {
          sourceFile.parserContextFlags = 32;
        }
        token = nextToken();
        processReferenceComments(sourceFile);
        sourceFile.statements = parseList(0, parseStatement);
        ts.Debug.assert(token === 1);
        sourceFile.endOfFileToken = parseTokenNode();
        setExternalModuleIndicator(sourceFile);
        sourceFile.nodeCount = nodeCount;
        sourceFile.identifierCount = identifierCount;
        sourceFile.identifiers = identifiers;
        sourceFile.parseDiagnostics = parseDiagnostics;
        if (setParentNodes) {
          fixupParentReferences(sourceFile);
        }
        return sourceFile;
      }
      function addJSDocComment(node) {
        if (contextFlags & 32) {
          var comments = ts.getLeadingCommentRangesOfNode(node, sourceFile);
          if (comments) {
            for (var _i = 0,
                comments_1 = comments; _i < comments_1.length; _i++) {
              var comment = comments_1[_i];
              var jsDocComment = JSDocParser.parseJSDocComment(node, comment.pos, comment.end - comment.pos);
              if (jsDocComment) {
                node.jsDocComment = jsDocComment;
              }
            }
          }
        }
        return node;
      }
      function fixupParentReferences(sourceFile) {
        var parent = sourceFile;
        forEachChild(sourceFile, visitNode);
        return;
        function visitNode(n) {
          if (n.parent !== parent) {
            n.parent = parent;
            var saveParent = parent;
            parent = n;
            forEachChild(n, visitNode);
            parent = saveParent;
          }
        }
      }
      Parser.fixupParentReferences = fixupParentReferences;
      function createSourceFile(fileName, languageVersion, scriptKind) {
        var sourceFile = new SourceFileConstructor(251, 0, sourceText.length);
        nodeCount++;
        sourceFile.text = sourceText;
        sourceFile.bindDiagnostics = [];
        sourceFile.languageVersion = languageVersion;
        sourceFile.fileName = ts.normalizePath(fileName);
        sourceFile.flags = ts.fileExtensionIs(sourceFile.fileName, ".d.ts") ? 4096 : 0;
        sourceFile.languageVariant = getLanguageVariant(scriptKind);
        sourceFile.scriptKind = scriptKind;
        return sourceFile;
      }
      function setContextFlag(val, flag) {
        if (val) {
          contextFlags |= flag;
        } else {
          contextFlags &= ~flag;
        }
      }
      function setDisallowInContext(val) {
        setContextFlag(val, 1);
      }
      function setYieldContext(val) {
        setContextFlag(val, 2);
      }
      function setDecoratorContext(val) {
        setContextFlag(val, 4);
      }
      function setAwaitContext(val) {
        setContextFlag(val, 8);
      }
      function doOutsideOfContext(context, func) {
        var contextFlagsToClear = context & contextFlags;
        if (contextFlagsToClear) {
          setContextFlag(false, contextFlagsToClear);
          var result = func();
          setContextFlag(true, contextFlagsToClear);
          return result;
        }
        return func();
      }
      function doInsideOfContext(context, func) {
        var contextFlagsToSet = context & ~contextFlags;
        if (contextFlagsToSet) {
          setContextFlag(true, contextFlagsToSet);
          var result = func();
          setContextFlag(false, contextFlagsToSet);
          return result;
        }
        return func();
      }
      function allowInAnd(func) {
        return doOutsideOfContext(1, func);
      }
      function disallowInAnd(func) {
        return doInsideOfContext(1, func);
      }
      function doInYieldContext(func) {
        return doInsideOfContext(2, func);
      }
      function doInDecoratorContext(func) {
        return doInsideOfContext(4, func);
      }
      function doInAwaitContext(func) {
        return doInsideOfContext(8, func);
      }
      function doOutsideOfAwaitContext(func) {
        return doOutsideOfContext(8, func);
      }
      function doInYieldAndAwaitContext(func) {
        return doInsideOfContext(2 | 8, func);
      }
      function inContext(flags) {
        return (contextFlags & flags) !== 0;
      }
      function inYieldContext() {
        return inContext(2);
      }
      function inDisallowInContext() {
        return inContext(1);
      }
      function inDecoratorContext() {
        return inContext(4);
      }
      function inAwaitContext() {
        return inContext(8);
      }
      function parseErrorAtCurrentToken(message, arg0) {
        var start = scanner.getTokenPos();
        var length = scanner.getTextPos() - start;
        parseErrorAtPosition(start, length, message, arg0);
      }
      function parseErrorAtPosition(start, length, message, arg0) {
        var lastError = ts.lastOrUndefined(parseDiagnostics);
        if (!lastError || start !== lastError.start) {
          parseDiagnostics.push(ts.createFileDiagnostic(sourceFile, start, length, message, arg0));
        }
        parseErrorBeforeNextFinishedNode = true;
      }
      function scanError(message, length) {
        var pos = scanner.getTextPos();
        parseErrorAtPosition(pos, length || 0, message);
      }
      function getNodePos() {
        return scanner.getStartPos();
      }
      function getNodeEnd() {
        return scanner.getStartPos();
      }
      function nextToken() {
        return token = scanner.scan();
      }
      function reScanGreaterToken() {
        return token = scanner.reScanGreaterToken();
      }
      function reScanSlashToken() {
        return token = scanner.reScanSlashToken();
      }
      function reScanTemplateToken() {
        return token = scanner.reScanTemplateToken();
      }
      function scanJsxIdentifier() {
        return token = scanner.scanJsxIdentifier();
      }
      function scanJsxText() {
        return token = scanner.scanJsxToken();
      }
      function speculationHelper(callback, isLookAhead) {
        var saveToken = token;
        var saveParseDiagnosticsLength = parseDiagnostics.length;
        var saveParseErrorBeforeNextFinishedNode = parseErrorBeforeNextFinishedNode;
        var saveContextFlags = contextFlags;
        var result = isLookAhead ? scanner.lookAhead(callback) : scanner.tryScan(callback);
        ts.Debug.assert(saveContextFlags === contextFlags);
        if (!result || isLookAhead) {
          token = saveToken;
          parseDiagnostics.length = saveParseDiagnosticsLength;
          parseErrorBeforeNextFinishedNode = saveParseErrorBeforeNextFinishedNode;
        }
        return result;
      }
      function lookAhead(callback) {
        return speculationHelper(callback, true);
      }
      function tryParse(callback) {
        return speculationHelper(callback, false);
      }
      function isIdentifier() {
        if (token === 69) {
          return true;
        }
        if (token === 114 && inYieldContext()) {
          return false;
        }
        if (token === 119 && inAwaitContext()) {
          return false;
        }
        return token > 105;
      }
      function parseExpected(kind, diagnosticMessage, shouldAdvance) {
        if (shouldAdvance === void 0) {
          shouldAdvance = true;
        }
        if (token === kind) {
          if (shouldAdvance) {
            nextToken();
          }
          return true;
        }
        if (diagnosticMessage) {
          parseErrorAtCurrentToken(diagnosticMessage);
        } else {
          parseErrorAtCurrentToken(ts.Diagnostics._0_expected, ts.tokenToString(kind));
        }
        return false;
      }
      function parseOptional(t) {
        if (token === t) {
          nextToken();
          return true;
        }
        return false;
      }
      function parseOptionalToken(t) {
        if (token === t) {
          return parseTokenNode();
        }
        return undefined;
      }
      function parseExpectedToken(t, reportAtCurrentPosition, diagnosticMessage, arg0) {
        return parseOptionalToken(t) || createMissingNode(t, reportAtCurrentPosition, diagnosticMessage, arg0);
      }
      function parseTokenNode() {
        var node = createNode(token);
        nextToken();
        return finishNode(node);
      }
      function canParseSemicolon() {
        if (token === 23) {
          return true;
        }
        return token === 16 || token === 1 || scanner.hasPrecedingLineBreak();
      }
      function parseSemicolon() {
        if (canParseSemicolon()) {
          if (token === 23) {
            nextToken();
          }
          return true;
        } else {
          return parseExpected(23);
        }
      }
      function createNode(kind, pos) {
        nodeCount++;
        if (!(pos >= 0)) {
          pos = scanner.getStartPos();
        }
        return new NodeConstructor(kind, pos, pos);
      }
      function finishNode(node, end) {
        node.end = end === undefined ? scanner.getStartPos() : end;
        if (contextFlags) {
          node.parserContextFlags = contextFlags;
        }
        if (parseErrorBeforeNextFinishedNode) {
          parseErrorBeforeNextFinishedNode = false;
          node.parserContextFlags |= 16;
        }
        return node;
      }
      function createMissingNode(kind, reportAtCurrentPosition, diagnosticMessage, arg0) {
        if (reportAtCurrentPosition) {
          parseErrorAtPosition(scanner.getStartPos(), 0, diagnosticMessage, arg0);
        } else {
          parseErrorAtCurrentToken(diagnosticMessage, arg0);
        }
        var result = createNode(kind, scanner.getStartPos());
        result.text = "";
        return finishNode(result);
      }
      function internIdentifier(text) {
        text = ts.escapeIdentifier(text);
        return ts.hasProperty(identifiers, text) ? identifiers[text] : (identifiers[text] = text);
      }
      function createIdentifier(isIdentifier, diagnosticMessage) {
        identifierCount++;
        if (isIdentifier) {
          var node = createNode(69);
          if (token !== 69) {
            node.originalKeywordKind = token;
          }
          node.text = internIdentifier(scanner.getTokenValue());
          nextToken();
          return finishNode(node);
        }
        return createMissingNode(69, false, diagnosticMessage || ts.Diagnostics.Identifier_expected);
      }
      function parseIdentifier(diagnosticMessage) {
        return createIdentifier(isIdentifier(), diagnosticMessage);
      }
      function parseIdentifierName() {
        return createIdentifier(ts.tokenIsIdentifierOrKeyword(token));
      }
      function isLiteralPropertyName() {
        return ts.tokenIsIdentifierOrKeyword(token) || token === 9 || token === 8;
      }
      function parsePropertyNameWorker(allowComputedPropertyNames) {
        if (token === 9 || token === 8) {
          return parseLiteralNode(true);
        }
        if (allowComputedPropertyNames && token === 19) {
          return parseComputedPropertyName();
        }
        return parseIdentifierName();
      }
      function parsePropertyName() {
        return parsePropertyNameWorker(true);
      }
      function parseSimplePropertyName() {
        return parsePropertyNameWorker(false);
      }
      function isSimplePropertyName() {
        return token === 9 || token === 8 || ts.tokenIsIdentifierOrKeyword(token);
      }
      function parseComputedPropertyName() {
        var node = createNode(137);
        parseExpected(19);
        node.expression = allowInAnd(parseExpression);
        parseExpected(20);
        return finishNode(node);
      }
      function parseContextualModifier(t) {
        return token === t && tryParse(nextTokenCanFollowModifier);
      }
      function nextTokenIsOnSameLineAndCanFollowModifier() {
        nextToken();
        if (scanner.hasPrecedingLineBreak()) {
          return false;
        }
        return canFollowModifier();
      }
      function nextTokenCanFollowModifier() {
        if (token === 74) {
          return nextToken() === 81;
        }
        if (token === 82) {
          nextToken();
          if (token === 77) {
            return lookAhead(nextTokenIsClassOrFunction);
          }
          return token !== 37 && token !== 15 && canFollowModifier();
        }
        if (token === 77) {
          return nextTokenIsClassOrFunction();
        }
        if (token === 113) {
          nextToken();
          return canFollowModifier();
        }
        return nextTokenIsOnSameLineAndCanFollowModifier();
      }
      function parseAnyContextualModifier() {
        return ts.isModifierKind(token) && tryParse(nextTokenCanFollowModifier);
      }
      function canFollowModifier() {
        return token === 19 || token === 15 || token === 37 || isLiteralPropertyName();
      }
      function nextTokenIsClassOrFunction() {
        nextToken();
        return token === 73 || token === 87;
      }
      function isListElement(parsingContext, inErrorRecovery) {
        var node = currentNode(parsingContext);
        if (node) {
          return true;
        }
        switch (parsingContext) {
          case 0:
          case 1:
          case 3:
            return !(token === 23 && inErrorRecovery) && isStartOfStatement();
          case 2:
            return token === 71 || token === 77;
          case 4:
            return isStartOfTypeMember();
          case 5:
            return lookAhead(isClassMemberStart) || (token === 23 && !inErrorRecovery);
          case 6:
            return token === 19 || isLiteralPropertyName();
          case 12:
            return token === 19 || token === 37 || isLiteralPropertyName();
          case 9:
            return token === 19 || isLiteralPropertyName();
          case 7:
            if (token === 15) {
              return lookAhead(isValidHeritageClauseObjectLiteral);
            }
            if (!inErrorRecovery) {
              return isStartOfLeftHandSideExpression() && !isHeritageClauseExtendsOrImplementsKeyword();
            } else {
              return isIdentifier() && !isHeritageClauseExtendsOrImplementsKeyword();
            }
          case 8:
            return isIdentifierOrPattern();
          case 10:
            return token === 24 || token === 22 || isIdentifierOrPattern();
          case 17:
            return isIdentifier();
          case 11:
          case 15:
            return token === 24 || token === 22 || isStartOfExpression();
          case 16:
            return isStartOfParameter();
          case 18:
          case 19:
            return token === 24 || isStartOfType();
          case 20:
            return isHeritageClause();
          case 21:
            return ts.tokenIsIdentifierOrKeyword(token);
          case 13:
            return ts.tokenIsIdentifierOrKeyword(token) || token === 15;
          case 14:
            return true;
          case 22:
          case 23:
          case 25:
            return JSDocParser.isJSDocType();
          case 24:
            return isSimplePropertyName();
        }
        ts.Debug.fail("Non-exhaustive case in 'isListElement'.");
      }
      function isValidHeritageClauseObjectLiteral() {
        ts.Debug.assert(token === 15);
        if (nextToken() === 16) {
          var next = nextToken();
          return next === 24 || next === 15 || next === 83 || next === 106;
        }
        return true;
      }
      function nextTokenIsIdentifier() {
        nextToken();
        return isIdentifier();
      }
      function nextTokenIsIdentifierOrKeyword() {
        nextToken();
        return ts.tokenIsIdentifierOrKeyword(token);
      }
      function isHeritageClauseExtendsOrImplementsKeyword() {
        if (token === 106 || token === 83) {
          return lookAhead(nextTokenIsStartOfExpression);
        }
        return false;
      }
      function nextTokenIsStartOfExpression() {
        nextToken();
        return isStartOfExpression();
      }
      function isListTerminator(kind) {
        if (token === 1) {
          return true;
        }
        switch (kind) {
          case 1:
          case 2:
          case 4:
          case 5:
          case 6:
          case 12:
          case 9:
          case 21:
            return token === 16;
          case 3:
            return token === 16 || token === 71 || token === 77;
          case 7:
            return token === 15 || token === 83 || token === 106;
          case 8:
            return isVariableDeclaratorListTerminator();
          case 17:
            return token === 27 || token === 17 || token === 15 || token === 83 || token === 106;
          case 11:
            return token === 18 || token === 23;
          case 15:
          case 19:
          case 10:
            return token === 20;
          case 16:
            return token === 18 || token === 20;
          case 18:
            return token === 27 || token === 17;
          case 20:
            return token === 15 || token === 16;
          case 13:
            return token === 27 || token === 39;
          case 14:
            return token === 25 && lookAhead(nextTokenIsSlash);
          case 22:
            return token === 18 || token === 54 || token === 16;
          case 23:
            return token === 27 || token === 16;
          case 25:
            return token === 20 || token === 16;
          case 24:
            return token === 16;
        }
      }
      function isVariableDeclaratorListTerminator() {
        if (canParseSemicolon()) {
          return true;
        }
        if (isInOrOfKeyword(token)) {
          return true;
        }
        if (token === 34) {
          return true;
        }
        return false;
      }
      function isInSomeParsingContext() {
        for (var kind = 0; kind < 26; kind++) {
          if (parsingContext & (1 << kind)) {
            if (isListElement(kind, true) || isListTerminator(kind)) {
              return true;
            }
          }
        }
        return false;
      }
      function parseList(kind, parseElement) {
        var saveParsingContext = parsingContext;
        parsingContext |= 1 << kind;
        var result = [];
        result.pos = getNodePos();
        while (!isListTerminator(kind)) {
          if (isListElement(kind, false)) {
            var element = parseListElement(kind, parseElement);
            result.push(element);
            continue;
          }
          if (abortParsingListOrMoveToNextToken(kind)) {
            break;
          }
        }
        result.end = getNodeEnd();
        parsingContext = saveParsingContext;
        return result;
      }
      function parseListElement(parsingContext, parseElement) {
        var node = currentNode(parsingContext);
        if (node) {
          return consumeNode(node);
        }
        return parseElement();
      }
      function currentNode(parsingContext) {
        if (parseErrorBeforeNextFinishedNode) {
          return undefined;
        }
        if (!syntaxCursor) {
          return undefined;
        }
        var node = syntaxCursor.currentNode(scanner.getStartPos());
        if (ts.nodeIsMissing(node)) {
          return undefined;
        }
        if (node.intersectsChange) {
          return undefined;
        }
        if (ts.containsParseError(node)) {
          return undefined;
        }
        var nodeContextFlags = node.parserContextFlags & 63;
        if (nodeContextFlags !== contextFlags) {
          return undefined;
        }
        if (!canReuseNode(node, parsingContext)) {
          return undefined;
        }
        return node;
      }
      function consumeNode(node) {
        scanner.setTextPos(node.end);
        nextToken();
        return node;
      }
      function canReuseNode(node, parsingContext) {
        switch (parsingContext) {
          case 5:
            return isReusableClassMember(node);
          case 2:
            return isReusableSwitchClause(node);
          case 0:
          case 1:
          case 3:
            return isReusableStatement(node);
          case 6:
            return isReusableEnumMember(node);
          case 4:
            return isReusableTypeMember(node);
          case 8:
            return isReusableVariableDeclaration(node);
          case 16:
            return isReusableParameter(node);
          case 20:
          case 17:
          case 19:
          case 18:
          case 11:
          case 12:
          case 7:
          case 13:
          case 14:
        }
        return false;
      }
      function isReusableClassMember(node) {
        if (node) {
          switch (node.kind) {
            case 145:
            case 150:
            case 146:
            case 147:
            case 142:
            case 194:
              return true;
            case 144:
              var methodDeclaration = node;
              var nameIsConstructor = methodDeclaration.name.kind === 69 && methodDeclaration.name.originalKeywordKind === 121;
              return !nameIsConstructor;
          }
        }
        return false;
      }
      function isReusableSwitchClause(node) {
        if (node) {
          switch (node.kind) {
            case 244:
            case 245:
              return true;
          }
        }
        return false;
      }
      function isReusableStatement(node) {
        if (node) {
          switch (node.kind) {
            case 216:
            case 196:
            case 195:
            case 199:
            case 198:
            case 211:
            case 207:
            case 209:
            case 206:
            case 205:
            case 203:
            case 204:
            case 202:
            case 201:
            case 208:
            case 197:
            case 212:
            case 210:
            case 200:
            case 213:
            case 225:
            case 224:
            case 231:
            case 230:
            case 221:
            case 217:
            case 218:
            case 220:
            case 219:
              return true;
          }
        }
        return false;
      }
      function isReusableEnumMember(node) {
        return node.kind === 250;
      }
      function isReusableTypeMember(node) {
        if (node) {
          switch (node.kind) {
            case 149:
            case 143:
            case 150:
            case 141:
            case 148:
              return true;
          }
        }
        return false;
      }
      function isReusableVariableDeclaration(node) {
        if (node.kind !== 214) {
          return false;
        }
        var variableDeclarator = node;
        return variableDeclarator.initializer === undefined;
      }
      function isReusableParameter(node) {
        if (node.kind !== 139) {
          return false;
        }
        var parameter = node;
        return parameter.initializer === undefined;
      }
      function abortParsingListOrMoveToNextToken(kind) {
        parseErrorAtCurrentToken(parsingContextErrors(kind));
        if (isInSomeParsingContext()) {
          return true;
        }
        nextToken();
        return false;
      }
      function parsingContextErrors(context) {
        switch (context) {
          case 0:
            return ts.Diagnostics.Declaration_or_statement_expected;
          case 1:
            return ts.Diagnostics.Declaration_or_statement_expected;
          case 2:
            return ts.Diagnostics.case_or_default_expected;
          case 3:
            return ts.Diagnostics.Statement_expected;
          case 4:
            return ts.Diagnostics.Property_or_signature_expected;
          case 5:
            return ts.Diagnostics.Unexpected_token_A_constructor_method_accessor_or_property_was_expected;
          case 6:
            return ts.Diagnostics.Enum_member_expected;
          case 7:
            return ts.Diagnostics.Expression_expected;
          case 8:
            return ts.Diagnostics.Variable_declaration_expected;
          case 9:
            return ts.Diagnostics.Property_destructuring_pattern_expected;
          case 10:
            return ts.Diagnostics.Array_element_destructuring_pattern_expected;
          case 11:
            return ts.Diagnostics.Argument_expression_expected;
          case 12:
            return ts.Diagnostics.Property_assignment_expected;
          case 15:
            return ts.Diagnostics.Expression_or_comma_expected;
          case 16:
            return ts.Diagnostics.Parameter_declaration_expected;
          case 17:
            return ts.Diagnostics.Type_parameter_declaration_expected;
          case 18:
            return ts.Diagnostics.Type_argument_expected;
          case 19:
            return ts.Diagnostics.Type_expected;
          case 20:
            return ts.Diagnostics.Unexpected_token_expected;
          case 21:
            return ts.Diagnostics.Identifier_expected;
          case 13:
            return ts.Diagnostics.Identifier_expected;
          case 14:
            return ts.Diagnostics.Identifier_expected;
          case 22:
            return ts.Diagnostics.Parameter_declaration_expected;
          case 23:
            return ts.Diagnostics.Type_argument_expected;
          case 25:
            return ts.Diagnostics.Type_expected;
          case 24:
            return ts.Diagnostics.Property_assignment_expected;
        }
      }
      ;
      function parseDelimitedList(kind, parseElement, considerSemicolonAsDelimeter) {
        var saveParsingContext = parsingContext;
        parsingContext |= 1 << kind;
        var result = [];
        result.pos = getNodePos();
        var commaStart = -1;
        while (true) {
          if (isListElement(kind, false)) {
            result.push(parseListElement(kind, parseElement));
            commaStart = scanner.getTokenPos();
            if (parseOptional(24)) {
              continue;
            }
            commaStart = -1;
            if (isListTerminator(kind)) {
              break;
            }
            parseExpected(24);
            if (considerSemicolonAsDelimeter && token === 23 && !scanner.hasPrecedingLineBreak()) {
              nextToken();
            }
            continue;
          }
          if (isListTerminator(kind)) {
            break;
          }
          if (abortParsingListOrMoveToNextToken(kind)) {
            break;
          }
        }
        if (commaStart >= 0) {
          result.hasTrailingComma = true;
        }
        result.end = getNodeEnd();
        parsingContext = saveParsingContext;
        return result;
      }
      function createMissingList() {
        var pos = getNodePos();
        var result = [];
        result.pos = pos;
        result.end = pos;
        return result;
      }
      function parseBracketedList(kind, parseElement, open, close) {
        if (parseExpected(open)) {
          var result = parseDelimitedList(kind, parseElement);
          parseExpected(close);
          return result;
        }
        return createMissingList();
      }
      function parseEntityName(allowReservedWords, diagnosticMessage) {
        var entity = parseIdentifier(diagnosticMessage);
        while (parseOptional(21)) {
          var node = createNode(136, entity.pos);
          node.left = entity;
          node.right = parseRightSideOfDot(allowReservedWords);
          entity = finishNode(node);
        }
        return entity;
      }
      function parseRightSideOfDot(allowIdentifierNames) {
        if (scanner.hasPrecedingLineBreak() && ts.tokenIsIdentifierOrKeyword(token)) {
          var matchesPattern = lookAhead(nextTokenIsIdentifierOrKeywordOnSameLine);
          if (matchesPattern) {
            return createMissingNode(69, true, ts.Diagnostics.Identifier_expected);
          }
        }
        return allowIdentifierNames ? parseIdentifierName() : parseIdentifier();
      }
      function parseTemplateExpression() {
        var template = createNode(186);
        template.head = parseTemplateLiteralFragment();
        ts.Debug.assert(template.head.kind === 12, "Template head has wrong token kind");
        var templateSpans = [];
        templateSpans.pos = getNodePos();
        do {
          templateSpans.push(parseTemplateSpan());
        } while (ts.lastOrUndefined(templateSpans).literal.kind === 13);
        templateSpans.end = getNodeEnd();
        template.templateSpans = templateSpans;
        return finishNode(template);
      }
      function parseTemplateSpan() {
        var span = createNode(193);
        span.expression = allowInAnd(parseExpression);
        var literal;
        if (token === 16) {
          reScanTemplateToken();
          literal = parseTemplateLiteralFragment();
        } else {
          literal = parseExpectedToken(14, false, ts.Diagnostics._0_expected, ts.tokenToString(16));
        }
        span.literal = literal;
        return finishNode(span);
      }
      function parseStringLiteralTypeNode() {
        return parseLiteralLikeNode(163, true);
      }
      function parseLiteralNode(internName) {
        return parseLiteralLikeNode(token, internName);
      }
      function parseTemplateLiteralFragment() {
        return parseLiteralLikeNode(token, false);
      }
      function parseLiteralLikeNode(kind, internName) {
        var node = createNode(kind);
        var text = scanner.getTokenValue();
        node.text = internName ? internIdentifier(text) : text;
        if (scanner.hasExtendedUnicodeEscape()) {
          node.hasExtendedUnicodeEscape = true;
        }
        if (scanner.isUnterminated()) {
          node.isUnterminated = true;
        }
        var tokenPos = scanner.getTokenPos();
        nextToken();
        finishNode(node);
        if (node.kind === 8 && sourceText.charCodeAt(tokenPos) === 48 && ts.isOctalDigit(sourceText.charCodeAt(tokenPos + 1))) {
          node.flags |= 32768;
        }
        return node;
      }
      function parseTypeReference() {
        var typeName = parseEntityName(false, ts.Diagnostics.Type_expected);
        var node = createNode(152, typeName.pos);
        node.typeName = typeName;
        if (!scanner.hasPrecedingLineBreak() && token === 25) {
          node.typeArguments = parseBracketedList(18, parseType, 25, 27);
        }
        return finishNode(node);
      }
      function parseThisTypePredicate(lhs) {
        nextToken();
        var node = createNode(151, lhs.pos);
        node.parameterName = lhs;
        node.type = parseType();
        return finishNode(node);
      }
      function parseThisTypeNode() {
        var node = createNode(162);
        nextToken();
        return finishNode(node);
      }
      function parseTypeQuery() {
        var node = createNode(155);
        parseExpected(101);
        node.exprName = parseEntityName(true);
        return finishNode(node);
      }
      function parseTypeParameter() {
        var node = createNode(138);
        node.name = parseIdentifier();
        if (parseOptional(83)) {
          if (isStartOfType() || !isStartOfExpression()) {
            node.constraint = parseType();
          } else {
            node.expression = parseUnaryExpressionOrHigher();
          }
        }
        return finishNode(node);
      }
      function parseTypeParameters() {
        if (token === 25) {
          return parseBracketedList(17, parseTypeParameter, 25, 27);
        }
      }
      function parseParameterType() {
        if (parseOptional(54)) {
          return parseType();
        }
        return undefined;
      }
      function isStartOfParameter() {
        return token === 22 || isIdentifierOrPattern() || ts.isModifierKind(token) || token === 55;
      }
      function setModifiers(node, modifiers) {
        if (modifiers) {
          node.flags |= modifiers.flags;
          node.modifiers = modifiers;
        }
      }
      function parseParameter() {
        var node = createNode(139);
        node.decorators = parseDecorators();
        setModifiers(node, parseModifiers());
        node.dotDotDotToken = parseOptionalToken(22);
        node.name = parseIdentifierOrPattern();
        if (ts.getFullWidth(node.name) === 0 && node.flags === 0 && ts.isModifierKind(token)) {
          nextToken();
        }
        node.questionToken = parseOptionalToken(53);
        node.type = parseParameterType();
        node.initializer = parseBindingElementInitializer(true);
        return addJSDocComment(finishNode(node));
      }
      function parseBindingElementInitializer(inParameter) {
        return inParameter ? parseParameterInitializer() : parseNonParameterInitializer();
      }
      function parseParameterInitializer() {
        return parseInitializer(true);
      }
      function fillSignature(returnToken, yieldContext, awaitContext, requireCompleteParameterList, signature) {
        var returnTokenRequired = returnToken === 34;
        signature.typeParameters = parseTypeParameters();
        signature.parameters = parseParameterList(yieldContext, awaitContext, requireCompleteParameterList);
        if (returnTokenRequired) {
          parseExpected(returnToken);
          signature.type = parseTypeOrTypePredicate();
        } else if (parseOptional(returnToken)) {
          signature.type = parseTypeOrTypePredicate();
        }
      }
      function parseParameterList(yieldContext, awaitContext, requireCompleteParameterList) {
        if (parseExpected(17)) {
          var savedYieldContext = inYieldContext();
          var savedAwaitContext = inAwaitContext();
          setYieldContext(yieldContext);
          setAwaitContext(awaitContext);
          var result = parseDelimitedList(16, parseParameter);
          setYieldContext(savedYieldContext);
          setAwaitContext(savedAwaitContext);
          if (!parseExpected(18) && requireCompleteParameterList) {
            return undefined;
          }
          return result;
        }
        return requireCompleteParameterList ? undefined : createMissingList();
      }
      function parseTypeMemberSemicolon() {
        if (parseOptional(24)) {
          return;
        }
        parseSemicolon();
      }
      function parseSignatureMember(kind) {
        var node = createNode(kind);
        if (kind === 149) {
          parseExpected(92);
        }
        fillSignature(54, false, false, false, node);
        parseTypeMemberSemicolon();
        return finishNode(node);
      }
      function isIndexSignature() {
        if (token !== 19) {
          return false;
        }
        return lookAhead(isUnambiguouslyIndexSignature);
      }
      function isUnambiguouslyIndexSignature() {
        nextToken();
        if (token === 22 || token === 20) {
          return true;
        }
        if (ts.isModifierKind(token)) {
          nextToken();
          if (isIdentifier()) {
            return true;
          }
        } else if (!isIdentifier()) {
          return false;
        } else {
          nextToken();
        }
        if (token === 54 || token === 24) {
          return true;
        }
        if (token !== 53) {
          return false;
        }
        nextToken();
        return token === 54 || token === 24 || token === 20;
      }
      function parseIndexSignatureDeclaration(fullStart, decorators, modifiers) {
        var node = createNode(150, fullStart);
        node.decorators = decorators;
        setModifiers(node, modifiers);
        node.parameters = parseBracketedList(16, parseParameter, 19, 20);
        node.type = parseTypeAnnotation();
        parseTypeMemberSemicolon();
        return finishNode(node);
      }
      function parsePropertyOrMethodSignature() {
        var fullStart = scanner.getStartPos();
        var name = parsePropertyName();
        var questionToken = parseOptionalToken(53);
        if (token === 17 || token === 25) {
          var method = createNode(143, fullStart);
          method.name = name;
          method.questionToken = questionToken;
          fillSignature(54, false, false, false, method);
          parseTypeMemberSemicolon();
          return finishNode(method);
        } else {
          var property = createNode(141, fullStart);
          property.name = name;
          property.questionToken = questionToken;
          property.type = parseTypeAnnotation();
          if (token === 56) {
            property.initializer = parseNonParameterInitializer();
          }
          parseTypeMemberSemicolon();
          return finishNode(property);
        }
      }
      function isStartOfTypeMember() {
        switch (token) {
          case 17:
          case 25:
          case 19:
            return true;
          default:
            if (ts.isModifierKind(token)) {
              var result = lookAhead(isStartOfIndexSignatureDeclaration);
              if (result) {
                return result;
              }
            }
            return isLiteralPropertyName() && lookAhead(isTypeMemberWithLiteralPropertyName);
        }
      }
      function isStartOfIndexSignatureDeclaration() {
        while (ts.isModifierKind(token)) {
          nextToken();
        }
        return isIndexSignature();
      }
      function isTypeMemberWithLiteralPropertyName() {
        nextToken();
        return token === 17 || token === 25 || token === 53 || token === 54 || canParseSemicolon();
      }
      function parseTypeMember() {
        switch (token) {
          case 17:
          case 25:
            return parseSignatureMember(148);
          case 19:
            return isIndexSignature() ? parseIndexSignatureDeclaration(scanner.getStartPos(), undefined, undefined) : parsePropertyOrMethodSignature();
          case 92:
            if (lookAhead(isStartOfConstructSignature)) {
              return parseSignatureMember(149);
            }
          case 9:
          case 8:
            return parsePropertyOrMethodSignature();
          default:
            if (ts.isModifierKind(token)) {
              var result = tryParse(parseIndexSignatureWithModifiers);
              if (result) {
                return result;
              }
            }
            if (ts.tokenIsIdentifierOrKeyword(token)) {
              return parsePropertyOrMethodSignature();
            }
        }
      }
      function parseIndexSignatureWithModifiers() {
        var fullStart = scanner.getStartPos();
        var decorators = parseDecorators();
        var modifiers = parseModifiers();
        return isIndexSignature() ? parseIndexSignatureDeclaration(fullStart, decorators, modifiers) : undefined;
      }
      function isStartOfConstructSignature() {
        nextToken();
        return token === 17 || token === 25;
      }
      function parseTypeLiteral() {
        var node = createNode(156);
        node.members = parseObjectTypeMembers();
        return finishNode(node);
      }
      function parseObjectTypeMembers() {
        var members;
        if (parseExpected(15)) {
          members = parseList(4, parseTypeMember);
          parseExpected(16);
        } else {
          members = createMissingList();
        }
        return members;
      }
      function parseTupleType() {
        var node = createNode(158);
        node.elementTypes = parseBracketedList(19, parseType, 19, 20);
        return finishNode(node);
      }
      function parseParenthesizedType() {
        var node = createNode(161);
        parseExpected(17);
        node.type = parseType();
        parseExpected(18);
        return finishNode(node);
      }
      function parseFunctionOrConstructorType(kind) {
        var node = createNode(kind);
        if (kind === 154) {
          parseExpected(92);
        }
        fillSignature(34, false, false, false, node);
        return finishNode(node);
      }
      function parseKeywordAndNoDot() {
        var node = parseTokenNode();
        return token === 21 ? undefined : node;
      }
      function parseNonArrayType() {
        switch (token) {
          case 117:
          case 130:
          case 128:
          case 120:
          case 131:
            var node = tryParse(parseKeywordAndNoDot);
            return node || parseTypeReference();
          case 9:
            return parseStringLiteralTypeNode();
          case 103:
            return parseTokenNode();
          case 97:
            {
              var thisKeyword = parseThisTypeNode();
              if (token === 124 && !scanner.hasPrecedingLineBreak()) {
                return parseThisTypePredicate(thisKeyword);
              } else {
                return thisKeyword;
              }
            }
          case 101:
            return parseTypeQuery();
          case 15:
            return parseTypeLiteral();
          case 19:
            return parseTupleType();
          case 17:
            return parseParenthesizedType();
          default:
            return parseTypeReference();
        }
      }
      function isStartOfType() {
        switch (token) {
          case 117:
          case 130:
          case 128:
          case 120:
          case 131:
          case 103:
          case 97:
          case 101:
          case 15:
          case 19:
          case 25:
          case 92:
          case 9:
            return true;
          case 17:
            return lookAhead(isStartOfParenthesizedOrFunctionType);
          default:
            return isIdentifier();
        }
      }
      function isStartOfParenthesizedOrFunctionType() {
        nextToken();
        return token === 18 || isStartOfParameter() || isStartOfType();
      }
      function parseArrayTypeOrHigher() {
        var type = parseNonArrayType();
        while (!scanner.hasPrecedingLineBreak() && parseOptional(19)) {
          parseExpected(20);
          var node = createNode(157, type.pos);
          node.elementType = type;
          type = finishNode(node);
        }
        return type;
      }
      function parseUnionOrIntersectionType(kind, parseConstituentType, operator) {
        var type = parseConstituentType();
        if (token === operator) {
          var types = [type];
          types.pos = type.pos;
          while (parseOptional(operator)) {
            types.push(parseConstituentType());
          }
          types.end = getNodeEnd();
          var node = createNode(kind, type.pos);
          node.types = types;
          type = finishNode(node);
        }
        return type;
      }
      function parseIntersectionTypeOrHigher() {
        return parseUnionOrIntersectionType(160, parseArrayTypeOrHigher, 46);
      }
      function parseUnionTypeOrHigher() {
        return parseUnionOrIntersectionType(159, parseIntersectionTypeOrHigher, 47);
      }
      function isStartOfFunctionType() {
        if (token === 25) {
          return true;
        }
        return token === 17 && lookAhead(isUnambiguouslyStartOfFunctionType);
      }
      function isUnambiguouslyStartOfFunctionType() {
        nextToken();
        if (token === 18 || token === 22) {
          return true;
        }
        if (isIdentifier() || ts.isModifierKind(token)) {
          nextToken();
          if (token === 54 || token === 24 || token === 53 || token === 56 || isIdentifier() || ts.isModifierKind(token)) {
            return true;
          }
          if (token === 18) {
            nextToken();
            if (token === 34) {
              return true;
            }
          }
        }
        return false;
      }
      function parseTypeOrTypePredicate() {
        var typePredicateVariable = isIdentifier() && tryParse(parseTypePredicatePrefix);
        var type = parseType();
        if (typePredicateVariable) {
          var node = createNode(151, typePredicateVariable.pos);
          node.parameterName = typePredicateVariable;
          node.type = type;
          return finishNode(node);
        } else {
          return type;
        }
      }
      function parseTypePredicatePrefix() {
        var id = parseIdentifier();
        if (token === 124 && !scanner.hasPrecedingLineBreak()) {
          nextToken();
          return id;
        }
      }
      function parseType() {
        return doOutsideOfContext(10, parseTypeWorker);
      }
      function parseTypeWorker() {
        if (isStartOfFunctionType()) {
          return parseFunctionOrConstructorType(153);
        }
        if (token === 92) {
          return parseFunctionOrConstructorType(154);
        }
        return parseUnionTypeOrHigher();
      }
      function parseTypeAnnotation() {
        return parseOptional(54) ? parseType() : undefined;
      }
      function isStartOfLeftHandSideExpression() {
        switch (token) {
          case 97:
          case 95:
          case 93:
          case 99:
          case 84:
          case 8:
          case 9:
          case 11:
          case 12:
          case 17:
          case 19:
          case 15:
          case 87:
          case 73:
          case 92:
          case 39:
          case 61:
          case 69:
            return true;
          default:
            return isIdentifier();
        }
      }
      function isStartOfExpression() {
        if (isStartOfLeftHandSideExpression()) {
          return true;
        }
        switch (token) {
          case 35:
          case 36:
          case 50:
          case 49:
          case 78:
          case 101:
          case 103:
          case 41:
          case 42:
          case 25:
          case 119:
          case 114:
            return true;
          default:
            if (isBinaryOperator()) {
              return true;
            }
            return isIdentifier();
        }
      }
      function isStartOfExpressionStatement() {
        return token !== 15 && token !== 87 && token !== 73 && token !== 55 && isStartOfExpression();
      }
      function parseExpression() {
        var saveDecoratorContext = inDecoratorContext();
        if (saveDecoratorContext) {
          setDecoratorContext(false);
        }
        var expr = parseAssignmentExpressionOrHigher();
        var operatorToken;
        while ((operatorToken = parseOptionalToken(24))) {
          expr = makeBinaryExpression(expr, operatorToken, parseAssignmentExpressionOrHigher());
        }
        if (saveDecoratorContext) {
          setDecoratorContext(true);
        }
        return expr;
      }
      function parseInitializer(inParameter) {
        if (token !== 56) {
          if (scanner.hasPrecedingLineBreak() || (inParameter && token === 15) || !isStartOfExpression()) {
            return undefined;
          }
        }
        parseExpected(56);
        return parseAssignmentExpressionOrHigher();
      }
      function parseAssignmentExpressionOrHigher() {
        if (isYieldExpression()) {
          return parseYieldExpression();
        }
        var arrowExpression = tryParseParenthesizedArrowFunctionExpression();
        if (arrowExpression) {
          return arrowExpression;
        }
        var expr = parseBinaryExpressionOrHigher(0);
        if (expr.kind === 69 && token === 34) {
          return parseSimpleArrowFunctionExpression(expr);
        }
        if (ts.isLeftHandSideExpression(expr) && ts.isAssignmentOperator(reScanGreaterToken())) {
          return makeBinaryExpression(expr, parseTokenNode(), parseAssignmentExpressionOrHigher());
        }
        return parseConditionalExpressionRest(expr);
      }
      function isYieldExpression() {
        if (token === 114) {
          if (inYieldContext()) {
            return true;
          }
          return lookAhead(nextTokenIsIdentifierOrKeywordOrNumberOnSameLine);
        }
        return false;
      }
      function nextTokenIsIdentifierOnSameLine() {
        nextToken();
        return !scanner.hasPrecedingLineBreak() && isIdentifier();
      }
      function parseYieldExpression() {
        var node = createNode(187);
        nextToken();
        if (!scanner.hasPrecedingLineBreak() && (token === 37 || isStartOfExpression())) {
          node.asteriskToken = parseOptionalToken(37);
          node.expression = parseAssignmentExpressionOrHigher();
          return finishNode(node);
        } else {
          return finishNode(node);
        }
      }
      function parseSimpleArrowFunctionExpression(identifier) {
        ts.Debug.assert(token === 34, "parseSimpleArrowFunctionExpression should only have been called if we had a =>");
        var node = createNode(177, identifier.pos);
        var parameter = createNode(139, identifier.pos);
        parameter.name = identifier;
        finishNode(parameter);
        node.parameters = [parameter];
        node.parameters.pos = parameter.pos;
        node.parameters.end = parameter.end;
        node.equalsGreaterThanToken = parseExpectedToken(34, false, ts.Diagnostics._0_expected, "=>");
        node.body = parseArrowFunctionExpressionBody(false);
        return finishNode(node);
      }
      function tryParseParenthesizedArrowFunctionExpression() {
        var triState = isParenthesizedArrowFunctionExpression();
        if (triState === 0) {
          return undefined;
        }
        var arrowFunction = triState === 1 ? parseParenthesizedArrowFunctionExpressionHead(true) : tryParse(parsePossibleParenthesizedArrowFunctionExpressionHead);
        if (!arrowFunction) {
          return undefined;
        }
        var isAsync = !!(arrowFunction.flags & 256);
        var lastToken = token;
        arrowFunction.equalsGreaterThanToken = parseExpectedToken(34, false, ts.Diagnostics._0_expected, "=>");
        arrowFunction.body = (lastToken === 34 || lastToken === 15) ? parseArrowFunctionExpressionBody(isAsync) : parseIdentifier();
        return finishNode(arrowFunction);
      }
      function isParenthesizedArrowFunctionExpression() {
        if (token === 17 || token === 25 || token === 118) {
          return lookAhead(isParenthesizedArrowFunctionExpressionWorker);
        }
        if (token === 34) {
          return 1;
        }
        return 0;
      }
      function isParenthesizedArrowFunctionExpressionWorker() {
        if (token === 118) {
          nextToken();
          if (scanner.hasPrecedingLineBreak()) {
            return 0;
          }
          if (token !== 17 && token !== 25) {
            return 0;
          }
        }
        var first = token;
        var second = nextToken();
        if (first === 17) {
          if (second === 18) {
            var third = nextToken();
            switch (third) {
              case 34:
              case 54:
              case 15:
                return 1;
              default:
                return 0;
            }
          }
          if (second === 19 || second === 15) {
            return 2;
          }
          if (second === 22) {
            return 1;
          }
          if (!isIdentifier()) {
            return 0;
          }
          if (nextToken() === 54) {
            return 1;
          }
          return 2;
        } else {
          ts.Debug.assert(first === 25);
          if (!isIdentifier()) {
            return 0;
          }
          if (sourceFile.languageVariant === 1) {
            var isArrowFunctionInJsx = lookAhead(function() {
              var third = nextToken();
              if (third === 83) {
                var fourth = nextToken();
                switch (fourth) {
                  case 56:
                  case 27:
                    return false;
                  default:
                    return true;
                }
              } else if (third === 24) {
                return true;
              }
              return false;
            });
            if (isArrowFunctionInJsx) {
              return 1;
            }
            return 0;
          }
          return 2;
        }
      }
      function parsePossibleParenthesizedArrowFunctionExpressionHead() {
        return parseParenthesizedArrowFunctionExpressionHead(false);
      }
      function parseParenthesizedArrowFunctionExpressionHead(allowAmbiguity) {
        var node = createNode(177);
        setModifiers(node, parseModifiersForArrowFunction());
        var isAsync = !!(node.flags & 256);
        fillSignature(54, false, isAsync, !allowAmbiguity, node);
        if (!node.parameters) {
          return undefined;
        }
        if (!allowAmbiguity && token !== 34 && token !== 15) {
          return undefined;
        }
        return node;
      }
      function parseArrowFunctionExpressionBody(isAsync) {
        if (token === 15) {
          return parseFunctionBlock(false, isAsync, false);
        }
        if (token !== 23 && token !== 87 && token !== 73 && isStartOfStatement() && !isStartOfExpressionStatement()) {
          return parseFunctionBlock(false, isAsync, true);
        }
        return isAsync ? doInAwaitContext(parseAssignmentExpressionOrHigher) : doOutsideOfAwaitContext(parseAssignmentExpressionOrHigher);
      }
      function parseConditionalExpressionRest(leftOperand) {
        var questionToken = parseOptionalToken(53);
        if (!questionToken) {
          return leftOperand;
        }
        var node = createNode(185, leftOperand.pos);
        node.condition = leftOperand;
        node.questionToken = questionToken;
        node.whenTrue = doOutsideOfContext(disallowInAndDecoratorContext, parseAssignmentExpressionOrHigher);
        node.colonToken = parseExpectedToken(54, false, ts.Diagnostics._0_expected, ts.tokenToString(54));
        node.whenFalse = parseAssignmentExpressionOrHigher();
        return finishNode(node);
      }
      function parseBinaryExpressionOrHigher(precedence) {
        var leftOperand = parseUnaryExpressionOrHigher();
        return parseBinaryExpressionRest(precedence, leftOperand);
      }
      function isInOrOfKeyword(t) {
        return t === 90 || t === 135;
      }
      function parseBinaryExpressionRest(precedence, leftOperand) {
        while (true) {
          reScanGreaterToken();
          var newPrecedence = getBinaryOperatorPrecedence();
          var consumeCurrentOperator = token === 38 ? newPrecedence >= precedence : newPrecedence > precedence;
          if (!consumeCurrentOperator) {
            break;
          }
          if (token === 90 && inDisallowInContext()) {
            break;
          }
          if (token === 116) {
            if (scanner.hasPrecedingLineBreak()) {
              break;
            } else {
              nextToken();
              leftOperand = makeAsExpression(leftOperand, parseType());
            }
          } else {
            leftOperand = makeBinaryExpression(leftOperand, parseTokenNode(), parseBinaryExpressionOrHigher(newPrecedence));
          }
        }
        return leftOperand;
      }
      function isBinaryOperator() {
        if (inDisallowInContext() && token === 90) {
          return false;
        }
        return getBinaryOperatorPrecedence() > 0;
      }
      function getBinaryOperatorPrecedence() {
        switch (token) {
          case 52:
            return 1;
          case 51:
            return 2;
          case 47:
            return 3;
          case 48:
            return 4;
          case 46:
            return 5;
          case 30:
          case 31:
          case 32:
          case 33:
            return 6;
          case 25:
          case 27:
          case 28:
          case 29:
          case 91:
          case 90:
          case 116:
            return 7;
          case 43:
          case 44:
          case 45:
            return 8;
          case 35:
          case 36:
            return 9;
          case 37:
          case 39:
          case 40:
            return 10;
          case 38:
            return 11;
        }
        return -1;
      }
      function makeBinaryExpression(left, operatorToken, right) {
        var node = createNode(184, left.pos);
        node.left = left;
        node.operatorToken = operatorToken;
        node.right = right;
        return finishNode(node);
      }
      function makeAsExpression(left, right) {
        var node = createNode(192, left.pos);
        node.expression = left;
        node.type = right;
        return finishNode(node);
      }
      function parsePrefixUnaryExpression() {
        var node = createNode(182);
        node.operator = token;
        nextToken();
        node.operand = parseSimpleUnaryExpression();
        return finishNode(node);
      }
      function parseDeleteExpression() {
        var node = createNode(178);
        nextToken();
        node.expression = parseSimpleUnaryExpression();
        return finishNode(node);
      }
      function parseTypeOfExpression() {
        var node = createNode(179);
        nextToken();
        node.expression = parseSimpleUnaryExpression();
        return finishNode(node);
      }
      function parseVoidExpression() {
        var node = createNode(180);
        nextToken();
        node.expression = parseSimpleUnaryExpression();
        return finishNode(node);
      }
      function isAwaitExpression() {
        if (token === 119) {
          if (inAwaitContext()) {
            return true;
          }
          return lookAhead(nextTokenIsIdentifierOnSameLine);
        }
        return false;
      }
      function parseAwaitExpression() {
        var node = createNode(181);
        nextToken();
        node.expression = parseSimpleUnaryExpression();
        return finishNode(node);
      }
      function parseUnaryExpressionOrHigher() {
        if (isAwaitExpression()) {
          return parseAwaitExpression();
        }
        if (isIncrementExpression()) {
          var incrementExpression = parseIncrementExpression();
          return token === 38 ? parseBinaryExpressionRest(getBinaryOperatorPrecedence(), incrementExpression) : incrementExpression;
        }
        var unaryOperator = token;
        var simpleUnaryExpression = parseSimpleUnaryExpression();
        if (token === 38) {
          var start = ts.skipTrivia(sourceText, simpleUnaryExpression.pos);
          if (simpleUnaryExpression.kind === 174) {
            parseErrorAtPosition(start, simpleUnaryExpression.end - start, ts.Diagnostics.A_type_assertion_expression_is_not_allowed_in_the_left_hand_side_of_an_exponentiation_expression_Consider_enclosing_the_expression_in_parentheses);
          } else {
            parseErrorAtPosition(start, simpleUnaryExpression.end - start, ts.Diagnostics.An_unary_expression_with_the_0_operator_is_not_allowed_in_the_left_hand_side_of_an_exponentiation_expression_Consider_enclosing_the_expression_in_parentheses, ts.tokenToString(unaryOperator));
          }
        }
        return simpleUnaryExpression;
      }
      function parseSimpleUnaryExpression() {
        switch (token) {
          case 35:
          case 36:
          case 50:
          case 49:
            return parsePrefixUnaryExpression();
          case 78:
            return parseDeleteExpression();
          case 101:
            return parseTypeOfExpression();
          case 103:
            return parseVoidExpression();
          case 25:
            return parseTypeAssertion();
          default:
            return parseIncrementExpression();
        }
      }
      function isIncrementExpression() {
        switch (token) {
          case 35:
          case 36:
          case 50:
          case 49:
          case 78:
          case 101:
          case 103:
            return false;
          case 25:
            if (sourceFile.languageVariant !== 1) {
              return false;
            }
          default:
            return true;
        }
      }
      function parseIncrementExpression() {
        if (token === 41 || token === 42) {
          var node = createNode(182);
          node.operator = token;
          nextToken();
          node.operand = parseLeftHandSideExpressionOrHigher();
          return finishNode(node);
        } else if (sourceFile.languageVariant === 1 && token === 25 && lookAhead(nextTokenIsIdentifierOrKeyword)) {
          return parseJsxElementOrSelfClosingElement(true);
        }
        var expression = parseLeftHandSideExpressionOrHigher();
        ts.Debug.assert(ts.isLeftHandSideExpression(expression));
        if ((token === 41 || token === 42) && !scanner.hasPrecedingLineBreak()) {
          var node = createNode(183, expression.pos);
          node.operand = expression;
          node.operator = token;
          nextToken();
          return finishNode(node);
        }
        return expression;
      }
      function parseLeftHandSideExpressionOrHigher() {
        var expression = token === 95 ? parseSuperExpression() : parseMemberExpressionOrHigher();
        return parseCallExpressionRest(expression);
      }
      function parseMemberExpressionOrHigher() {
        var expression = parsePrimaryExpression();
        return parseMemberExpressionRest(expression);
      }
      function parseSuperExpression() {
        var expression = parseTokenNode();
        if (token === 17 || token === 21 || token === 19) {
          return expression;
        }
        var node = createNode(169, expression.pos);
        node.expression = expression;
        node.dotToken = parseExpectedToken(21, false, ts.Diagnostics.super_must_be_followed_by_an_argument_list_or_member_access);
        node.name = parseRightSideOfDot(true);
        return finishNode(node);
      }
      function tagNamesAreEquivalent(lhs, rhs) {
        if (lhs.kind !== rhs.kind) {
          return false;
        }
        if (lhs.kind === 69) {
          return lhs.text === rhs.text;
        }
        return lhs.right.text === rhs.right.text && tagNamesAreEquivalent(lhs.left, rhs.left);
      }
      function parseJsxElementOrSelfClosingElement(inExpressionContext) {
        var opening = parseJsxOpeningOrSelfClosingElement(inExpressionContext);
        var result;
        if (opening.kind === 238) {
          var node = createNode(236, opening.pos);
          node.openingElement = opening;
          node.children = parseJsxChildren(node.openingElement.tagName);
          node.closingElement = parseJsxClosingElement(inExpressionContext);
          if (!tagNamesAreEquivalent(node.openingElement.tagName, node.closingElement.tagName)) {
            parseErrorAtPosition(node.closingElement.pos, node.closingElement.end - node.closingElement.pos, ts.Diagnostics.Expected_corresponding_JSX_closing_tag_for_0, ts.getTextOfNodeFromSourceText(sourceText, node.openingElement.tagName));
          }
          result = finishNode(node);
        } else {
          ts.Debug.assert(opening.kind === 237);
          result = opening;
        }
        if (inExpressionContext && token === 25) {
          var invalidElement = tryParse(function() {
            return parseJsxElementOrSelfClosingElement(true);
          });
          if (invalidElement) {
            parseErrorAtCurrentToken(ts.Diagnostics.JSX_expressions_must_have_one_parent_element);
            var badNode = createNode(184, result.pos);
            badNode.end = invalidElement.end;
            badNode.left = result;
            badNode.right = invalidElement;
            badNode.operatorToken = createMissingNode(24, false, undefined);
            badNode.operatorToken.pos = badNode.operatorToken.end = badNode.right.pos;
            return badNode;
          }
        }
        return result;
      }
      function parseJsxText() {
        var node = createNode(239, scanner.getStartPos());
        token = scanner.scanJsxToken();
        return finishNode(node);
      }
      function parseJsxChild() {
        switch (token) {
          case 239:
            return parseJsxText();
          case 15:
            return parseJsxExpression(false);
          case 25:
            return parseJsxElementOrSelfClosingElement(false);
        }
        ts.Debug.fail("Unknown JSX child kind " + token);
      }
      function parseJsxChildren(openingTagName) {
        var result = [];
        result.pos = scanner.getStartPos();
        var saveParsingContext = parsingContext;
        parsingContext |= 1 << 14;
        while (true) {
          token = scanner.reScanJsxToken();
          if (token === 26) {
            break;
          } else if (token === 1) {
            parseErrorAtPosition(openingTagName.pos, openingTagName.end - openingTagName.pos, ts.Diagnostics.JSX_element_0_has_no_corresponding_closing_tag, ts.getTextOfNodeFromSourceText(sourceText, openingTagName));
            break;
          }
          result.push(parseJsxChild());
        }
        result.end = scanner.getTokenPos();
        parsingContext = saveParsingContext;
        return result;
      }
      function parseJsxOpeningOrSelfClosingElement(inExpressionContext) {
        var fullStart = scanner.getStartPos();
        parseExpected(25);
        var tagName = parseJsxElementName();
        var attributes = parseList(13, parseJsxAttribute);
        var node;
        if (token === 27) {
          node = createNode(238, fullStart);
          scanJsxText();
        } else {
          parseExpected(39);
          if (inExpressionContext) {
            parseExpected(27);
          } else {
            parseExpected(27, undefined, false);
            scanJsxText();
          }
          node = createNode(237, fullStart);
        }
        node.tagName = tagName;
        node.attributes = attributes;
        return finishNode(node);
      }
      function parseJsxElementName() {
        scanJsxIdentifier();
        var elementName = parseIdentifierName();
        while (parseOptional(21)) {
          scanJsxIdentifier();
          var node = createNode(136, elementName.pos);
          node.left = elementName;
          node.right = parseIdentifierName();
          elementName = finishNode(node);
        }
        return elementName;
      }
      function parseJsxExpression(inExpressionContext) {
        var node = createNode(243);
        parseExpected(15);
        if (token !== 16) {
          node.expression = parseAssignmentExpressionOrHigher();
        }
        if (inExpressionContext) {
          parseExpected(16);
        } else {
          parseExpected(16, undefined, false);
          scanJsxText();
        }
        return finishNode(node);
      }
      function parseJsxAttribute() {
        if (token === 15) {
          return parseJsxSpreadAttribute();
        }
        scanJsxIdentifier();
        var node = createNode(241);
        node.name = parseIdentifierName();
        if (parseOptional(56)) {
          switch (token) {
            case 9:
              node.initializer = parseLiteralNode();
              break;
            default:
              node.initializer = parseJsxExpression(true);
              break;
          }
        }
        return finishNode(node);
      }
      function parseJsxSpreadAttribute() {
        var node = createNode(242);
        parseExpected(15);
        parseExpected(22);
        node.expression = parseExpression();
        parseExpected(16);
        return finishNode(node);
      }
      function parseJsxClosingElement(inExpressionContext) {
        var node = createNode(240);
        parseExpected(26);
        node.tagName = parseJsxElementName();
        if (inExpressionContext) {
          parseExpected(27);
        } else {
          parseExpected(27, undefined, false);
          scanJsxText();
        }
        return finishNode(node);
      }
      function parseTypeAssertion() {
        var node = createNode(174);
        parseExpected(25);
        node.type = parseType();
        parseExpected(27);
        node.expression = parseSimpleUnaryExpression();
        return finishNode(node);
      }
      function parseMemberExpressionRest(expression) {
        while (true) {
          var dotToken = parseOptionalToken(21);
          if (dotToken) {
            var propertyAccess = createNode(169, expression.pos);
            propertyAccess.expression = expression;
            propertyAccess.dotToken = dotToken;
            propertyAccess.name = parseRightSideOfDot(true);
            expression = finishNode(propertyAccess);
            continue;
          }
          if (!inDecoratorContext() && parseOptional(19)) {
            var indexedAccess = createNode(170, expression.pos);
            indexedAccess.expression = expression;
            if (token !== 20) {
              indexedAccess.argumentExpression = allowInAnd(parseExpression);
              if (indexedAccess.argumentExpression.kind === 9 || indexedAccess.argumentExpression.kind === 8) {
                var literal = indexedAccess.argumentExpression;
                literal.text = internIdentifier(literal.text);
              }
            }
            parseExpected(20);
            expression = finishNode(indexedAccess);
            continue;
          }
          if (token === 11 || token === 12) {
            var tagExpression = createNode(173, expression.pos);
            tagExpression.tag = expression;
            tagExpression.template = token === 11 ? parseLiteralNode() : parseTemplateExpression();
            expression = finishNode(tagExpression);
            continue;
          }
          return expression;
        }
      }
      function parseCallExpressionRest(expression) {
        while (true) {
          expression = parseMemberExpressionRest(expression);
          if (token === 25) {
            var typeArguments = tryParse(parseTypeArgumentsInExpression);
            if (!typeArguments) {
              return expression;
            }
            var callExpr = createNode(171, expression.pos);
            callExpr.expression = expression;
            callExpr.typeArguments = typeArguments;
            callExpr.arguments = parseArgumentList();
            expression = finishNode(callExpr);
            continue;
          } else if (token === 17) {
            var callExpr = createNode(171, expression.pos);
            callExpr.expression = expression;
            callExpr.arguments = parseArgumentList();
            expression = finishNode(callExpr);
            continue;
          }
          return expression;
        }
      }
      function parseArgumentList() {
        parseExpected(17);
        var result = parseDelimitedList(11, parseArgumentExpression);
        parseExpected(18);
        return result;
      }
      function parseTypeArgumentsInExpression() {
        if (!parseOptional(25)) {
          return undefined;
        }
        var typeArguments = parseDelimitedList(18, parseType);
        if (!parseExpected(27)) {
          return undefined;
        }
        return typeArguments && canFollowTypeArgumentsInExpression() ? typeArguments : undefined;
      }
      function canFollowTypeArgumentsInExpression() {
        switch (token) {
          case 17:
          case 21:
          case 18:
          case 20:
          case 54:
          case 23:
          case 53:
          case 30:
          case 32:
          case 31:
          case 33:
          case 51:
          case 52:
          case 48:
          case 46:
          case 47:
          case 16:
          case 1:
            return true;
          case 24:
          case 15:
          default:
            return false;
        }
      }
      function parsePrimaryExpression() {
        switch (token) {
          case 8:
          case 9:
          case 11:
            return parseLiteralNode();
          case 97:
          case 95:
          case 93:
          case 99:
          case 84:
            return parseTokenNode();
          case 17:
            return parseParenthesizedExpression();
          case 19:
            return parseArrayLiteralExpression();
          case 15:
            return parseObjectLiteralExpression();
          case 118:
            if (!lookAhead(nextTokenIsFunctionKeywordOnSameLine)) {
              break;
            }
            return parseFunctionExpression();
          case 73:
            return parseClassExpression();
          case 87:
            return parseFunctionExpression();
          case 92:
            return parseNewExpression();
          case 39:
          case 61:
            if (reScanSlashToken() === 10) {
              return parseLiteralNode();
            }
            break;
          case 12:
            return parseTemplateExpression();
        }
        return parseIdentifier(ts.Diagnostics.Expression_expected);
      }
      function parseParenthesizedExpression() {
        var node = createNode(175);
        parseExpected(17);
        node.expression = allowInAnd(parseExpression);
        parseExpected(18);
        return finishNode(node);
      }
      function parseSpreadElement() {
        var node = createNode(188);
        parseExpected(22);
        node.expression = parseAssignmentExpressionOrHigher();
        return finishNode(node);
      }
      function parseArgumentOrArrayLiteralElement() {
        return token === 22 ? parseSpreadElement() : token === 24 ? createNode(190) : parseAssignmentExpressionOrHigher();
      }
      function parseArgumentExpression() {
        return doOutsideOfContext(disallowInAndDecoratorContext, parseArgumentOrArrayLiteralElement);
      }
      function parseArrayLiteralExpression() {
        var node = createNode(167);
        parseExpected(19);
        if (scanner.hasPrecedingLineBreak())
          node.flags |= 1024;
        node.elements = parseDelimitedList(15, parseArgumentOrArrayLiteralElement);
        parseExpected(20);
        return finishNode(node);
      }
      function tryParseAccessorDeclaration(fullStart, decorators, modifiers) {
        if (parseContextualModifier(123)) {
          return parseAccessorDeclaration(146, fullStart, decorators, modifiers);
        } else if (parseContextualModifier(129)) {
          return parseAccessorDeclaration(147, fullStart, decorators, modifiers);
        }
        return undefined;
      }
      function parseObjectLiteralElement() {
        var fullStart = scanner.getStartPos();
        var decorators = parseDecorators();
        var modifiers = parseModifiers();
        var accessor = tryParseAccessorDeclaration(fullStart, decorators, modifiers);
        if (accessor) {
          return accessor;
        }
        var asteriskToken = parseOptionalToken(37);
        var tokenIsIdentifier = isIdentifier();
        var propertyName = parsePropertyName();
        var questionToken = parseOptionalToken(53);
        if (asteriskToken || token === 17 || token === 25) {
          return parseMethodDeclaration(fullStart, decorators, modifiers, asteriskToken, propertyName, questionToken);
        }
        var isShorthandPropertyAssignment = tokenIsIdentifier && (token === 24 || token === 16 || token === 56);
        if (isShorthandPropertyAssignment) {
          var shorthandDeclaration = createNode(249, fullStart);
          shorthandDeclaration.name = propertyName;
          shorthandDeclaration.questionToken = questionToken;
          var equalsToken = parseOptionalToken(56);
          if (equalsToken) {
            shorthandDeclaration.equalsToken = equalsToken;
            shorthandDeclaration.objectAssignmentInitializer = allowInAnd(parseAssignmentExpressionOrHigher);
          }
          return addJSDocComment(finishNode(shorthandDeclaration));
        } else {
          var propertyAssignment = createNode(248, fullStart);
          propertyAssignment.modifiers = modifiers;
          propertyAssignment.name = propertyName;
          propertyAssignment.questionToken = questionToken;
          parseExpected(54);
          propertyAssignment.initializer = allowInAnd(parseAssignmentExpressionOrHigher);
          return addJSDocComment(finishNode(propertyAssignment));
        }
      }
      function parseObjectLiteralExpression() {
        var node = createNode(168);
        parseExpected(15);
        if (scanner.hasPrecedingLineBreak()) {
          node.flags |= 1024;
        }
        node.properties = parseDelimitedList(12, parseObjectLiteralElement, true);
        parseExpected(16);
        return finishNode(node);
      }
      function parseFunctionExpression() {
        var saveDecoratorContext = inDecoratorContext();
        if (saveDecoratorContext) {
          setDecoratorContext(false);
        }
        var node = createNode(176);
        setModifiers(node, parseModifiers());
        parseExpected(87);
        node.asteriskToken = parseOptionalToken(37);
        var isGenerator = !!node.asteriskToken;
        var isAsync = !!(node.flags & 256);
        node.name = isGenerator && isAsync ? doInYieldAndAwaitContext(parseOptionalIdentifier) : isGenerator ? doInYieldContext(parseOptionalIdentifier) : isAsync ? doInAwaitContext(parseOptionalIdentifier) : parseOptionalIdentifier();
        fillSignature(54, isGenerator, isAsync, false, node);
        node.body = parseFunctionBlock(isGenerator, isAsync, false);
        if (saveDecoratorContext) {
          setDecoratorContext(true);
        }
        return addJSDocComment(finishNode(node));
      }
      function parseOptionalIdentifier() {
        return isIdentifier() ? parseIdentifier() : undefined;
      }
      function parseNewExpression() {
        var node = createNode(172);
        parseExpected(92);
        node.expression = parseMemberExpressionOrHigher();
        node.typeArguments = tryParse(parseTypeArgumentsInExpression);
        if (node.typeArguments || token === 17) {
          node.arguments = parseArgumentList();
        }
        return finishNode(node);
      }
      function parseBlock(ignoreMissingOpenBrace, diagnosticMessage) {
        var node = createNode(195);
        if (parseExpected(15, diagnosticMessage) || ignoreMissingOpenBrace) {
          node.statements = parseList(1, parseStatement);
          parseExpected(16);
        } else {
          node.statements = createMissingList();
        }
        return finishNode(node);
      }
      function parseFunctionBlock(allowYield, allowAwait, ignoreMissingOpenBrace, diagnosticMessage) {
        var savedYieldContext = inYieldContext();
        setYieldContext(allowYield);
        var savedAwaitContext = inAwaitContext();
        setAwaitContext(allowAwait);
        var saveDecoratorContext = inDecoratorContext();
        if (saveDecoratorContext) {
          setDecoratorContext(false);
        }
        var block = parseBlock(ignoreMissingOpenBrace, diagnosticMessage);
        if (saveDecoratorContext) {
          setDecoratorContext(true);
        }
        setYieldContext(savedYieldContext);
        setAwaitContext(savedAwaitContext);
        return block;
      }
      function parseEmptyStatement() {
        var node = createNode(197);
        parseExpected(23);
        return finishNode(node);
      }
      function parseIfStatement() {
        var node = createNode(199);
        parseExpected(88);
        parseExpected(17);
        node.expression = allowInAnd(parseExpression);
        parseExpected(18);
        node.thenStatement = parseStatement();
        node.elseStatement = parseOptional(80) ? parseStatement() : undefined;
        return finishNode(node);
      }
      function parseDoStatement() {
        var node = createNode(200);
        parseExpected(79);
        node.statement = parseStatement();
        parseExpected(104);
        parseExpected(17);
        node.expression = allowInAnd(parseExpression);
        parseExpected(18);
        parseOptional(23);
        return finishNode(node);
      }
      function parseWhileStatement() {
        var node = createNode(201);
        parseExpected(104);
        parseExpected(17);
        node.expression = allowInAnd(parseExpression);
        parseExpected(18);
        node.statement = parseStatement();
        return finishNode(node);
      }
      function parseForOrForInOrForOfStatement() {
        var pos = getNodePos();
        parseExpected(86);
        parseExpected(17);
        var initializer = undefined;
        if (token !== 23) {
          if (token === 102 || token === 108 || token === 74) {
            initializer = parseVariableDeclarationList(true);
          } else {
            initializer = disallowInAnd(parseExpression);
          }
        }
        var forOrForInOrForOfStatement;
        if (parseOptional(90)) {
          var forInStatement = createNode(203, pos);
          forInStatement.initializer = initializer;
          forInStatement.expression = allowInAnd(parseExpression);
          parseExpected(18);
          forOrForInOrForOfStatement = forInStatement;
        } else if (parseOptional(135)) {
          var forOfStatement = createNode(204, pos);
          forOfStatement.initializer = initializer;
          forOfStatement.expression = allowInAnd(parseAssignmentExpressionOrHigher);
          parseExpected(18);
          forOrForInOrForOfStatement = forOfStatement;
        } else {
          var forStatement = createNode(202, pos);
          forStatement.initializer = initializer;
          parseExpected(23);
          if (token !== 23 && token !== 18) {
            forStatement.condition = allowInAnd(parseExpression);
          }
          parseExpected(23);
          if (token !== 18) {
            forStatement.incrementor = allowInAnd(parseExpression);
          }
          parseExpected(18);
          forOrForInOrForOfStatement = forStatement;
        }
        forOrForInOrForOfStatement.statement = parseStatement();
        return finishNode(forOrForInOrForOfStatement);
      }
      function parseBreakOrContinueStatement(kind) {
        var node = createNode(kind);
        parseExpected(kind === 206 ? 70 : 75);
        if (!canParseSemicolon()) {
          node.label = parseIdentifier();
        }
        parseSemicolon();
        return finishNode(node);
      }
      function parseReturnStatement() {
        var node = createNode(207);
        parseExpected(94);
        if (!canParseSemicolon()) {
          node.expression = allowInAnd(parseExpression);
        }
        parseSemicolon();
        return finishNode(node);
      }
      function parseWithStatement() {
        var node = createNode(208);
        parseExpected(105);
        parseExpected(17);
        node.expression = allowInAnd(parseExpression);
        parseExpected(18);
        node.statement = parseStatement();
        return finishNode(node);
      }
      function parseCaseClause() {
        var node = createNode(244);
        parseExpected(71);
        node.expression = allowInAnd(parseExpression);
        parseExpected(54);
        node.statements = parseList(3, parseStatement);
        return finishNode(node);
      }
      function parseDefaultClause() {
        var node = createNode(245);
        parseExpected(77);
        parseExpected(54);
        node.statements = parseList(3, parseStatement);
        return finishNode(node);
      }
      function parseCaseOrDefaultClause() {
        return token === 71 ? parseCaseClause() : parseDefaultClause();
      }
      function parseSwitchStatement() {
        var node = createNode(209);
        parseExpected(96);
        parseExpected(17);
        node.expression = allowInAnd(parseExpression);
        parseExpected(18);
        var caseBlock = createNode(223, scanner.getStartPos());
        parseExpected(15);
        caseBlock.clauses = parseList(2, parseCaseOrDefaultClause);
        parseExpected(16);
        node.caseBlock = finishNode(caseBlock);
        return finishNode(node);
      }
      function parseThrowStatement() {
        var node = createNode(211);
        parseExpected(98);
        node.expression = scanner.hasPrecedingLineBreak() ? undefined : allowInAnd(parseExpression);
        parseSemicolon();
        return finishNode(node);
      }
      function parseTryStatement() {
        var node = createNode(212);
        parseExpected(100);
        node.tryBlock = parseBlock(false);
        node.catchClause = token === 72 ? parseCatchClause() : undefined;
        if (!node.catchClause || token === 85) {
          parseExpected(85);
          node.finallyBlock = parseBlock(false);
        }
        return finishNode(node);
      }
      function parseCatchClause() {
        var result = createNode(247);
        parseExpected(72);
        if (parseExpected(17)) {
          result.variableDeclaration = parseVariableDeclaration();
        }
        parseExpected(18);
        result.block = parseBlock(false);
        return finishNode(result);
      }
      function parseDebuggerStatement() {
        var node = createNode(213);
        parseExpected(76);
        parseSemicolon();
        return finishNode(node);
      }
      function parseExpressionOrLabeledStatement() {
        var fullStart = scanner.getStartPos();
        var expression = allowInAnd(parseExpression);
        if (expression.kind === 69 && parseOptional(54)) {
          var labeledStatement = createNode(210, fullStart);
          labeledStatement.label = expression;
          labeledStatement.statement = parseStatement();
          return addJSDocComment(finishNode(labeledStatement));
        } else {
          var expressionStatement = createNode(198, fullStart);
          expressionStatement.expression = expression;
          parseSemicolon();
          return addJSDocComment(finishNode(expressionStatement));
        }
      }
      function nextTokenIsIdentifierOrKeywordOnSameLine() {
        nextToken();
        return ts.tokenIsIdentifierOrKeyword(token) && !scanner.hasPrecedingLineBreak();
      }
      function nextTokenIsFunctionKeywordOnSameLine() {
        nextToken();
        return token === 87 && !scanner.hasPrecedingLineBreak();
      }
      function nextTokenIsIdentifierOrKeywordOrNumberOnSameLine() {
        nextToken();
        return (ts.tokenIsIdentifierOrKeyword(token) || token === 8) && !scanner.hasPrecedingLineBreak();
      }
      function isDeclaration() {
        while (true) {
          switch (token) {
            case 102:
            case 108:
            case 74:
            case 87:
            case 73:
            case 81:
              return true;
            case 107:
            case 132:
              return nextTokenIsIdentifierOnSameLine();
            case 125:
            case 126:
              return nextTokenIsIdentifierOrStringLiteralOnSameLine();
            case 115:
            case 118:
            case 122:
            case 110:
            case 111:
            case 112:
              nextToken();
              if (scanner.hasPrecedingLineBreak()) {
                return false;
              }
              continue;
            case 134:
              return nextToken() === 15;
            case 89:
              nextToken();
              return token === 9 || token === 37 || token === 15 || ts.tokenIsIdentifierOrKeyword(token);
            case 82:
              nextToken();
              if (token === 56 || token === 37 || token === 15 || token === 77) {
                return true;
              }
              continue;
            case 113:
              nextToken();
              continue;
            default:
              return false;
          }
        }
      }
      function isStartOfDeclaration() {
        return lookAhead(isDeclaration);
      }
      function isStartOfStatement() {
        switch (token) {
          case 55:
          case 23:
          case 15:
          case 102:
          case 108:
          case 87:
          case 73:
          case 81:
          case 88:
          case 79:
          case 104:
          case 86:
          case 75:
          case 70:
          case 94:
          case 105:
          case 96:
          case 98:
          case 100:
          case 76:
          case 72:
          case 85:
            return true;
          case 74:
          case 82:
          case 89:
            return isStartOfDeclaration();
          case 118:
          case 122:
          case 107:
          case 125:
          case 126:
          case 132:
          case 134:
            return true;
          case 112:
          case 110:
          case 111:
          case 113:
            return isStartOfDeclaration() || !lookAhead(nextTokenIsIdentifierOrKeywordOnSameLine);
          default:
            return isStartOfExpression();
        }
      }
      function nextTokenIsIdentifierOrStartOfDestructuring() {
        nextToken();
        return isIdentifier() || token === 15 || token === 19;
      }
      function isLetDeclaration() {
        return lookAhead(nextTokenIsIdentifierOrStartOfDestructuring);
      }
      function parseStatement() {
        switch (token) {
          case 23:
            return parseEmptyStatement();
          case 15:
            return parseBlock(false);
          case 102:
            return parseVariableStatement(scanner.getStartPos(), undefined, undefined);
          case 108:
            if (isLetDeclaration()) {
              return parseVariableStatement(scanner.getStartPos(), undefined, undefined);
            }
            break;
          case 87:
            return parseFunctionDeclaration(scanner.getStartPos(), undefined, undefined);
          case 73:
            return parseClassDeclaration(scanner.getStartPos(), undefined, undefined);
          case 88:
            return parseIfStatement();
          case 79:
            return parseDoStatement();
          case 104:
            return parseWhileStatement();
          case 86:
            return parseForOrForInOrForOfStatement();
          case 75:
            return parseBreakOrContinueStatement(205);
          case 70:
            return parseBreakOrContinueStatement(206);
          case 94:
            return parseReturnStatement();
          case 105:
            return parseWithStatement();
          case 96:
            return parseSwitchStatement();
          case 98:
            return parseThrowStatement();
          case 100:
          case 72:
          case 85:
            return parseTryStatement();
          case 76:
            return parseDebuggerStatement();
          case 55:
            return parseDeclaration();
          case 118:
          case 107:
          case 132:
          case 125:
          case 126:
          case 122:
          case 74:
          case 81:
          case 82:
          case 89:
          case 110:
          case 111:
          case 112:
          case 115:
          case 113:
          case 134:
            if (isStartOfDeclaration()) {
              return parseDeclaration();
            }
            break;
        }
        return parseExpressionOrLabeledStatement();
      }
      function parseDeclaration() {
        var fullStart = getNodePos();
        var decorators = parseDecorators();
        var modifiers = parseModifiers();
        switch (token) {
          case 102:
          case 108:
          case 74:
            return parseVariableStatement(fullStart, decorators, modifiers);
          case 87:
            return parseFunctionDeclaration(fullStart, decorators, modifiers);
          case 73:
            return parseClassDeclaration(fullStart, decorators, modifiers);
          case 107:
            return parseInterfaceDeclaration(fullStart, decorators, modifiers);
          case 132:
            return parseTypeAliasDeclaration(fullStart, decorators, modifiers);
          case 81:
            return parseEnumDeclaration(fullStart, decorators, modifiers);
          case 134:
          case 125:
          case 126:
            return parseModuleDeclaration(fullStart, decorators, modifiers);
          case 89:
            return parseImportDeclarationOrImportEqualsDeclaration(fullStart, decorators, modifiers);
          case 82:
            nextToken();
            return token === 77 || token === 56 ? parseExportAssignment(fullStart, decorators, modifiers) : parseExportDeclaration(fullStart, decorators, modifiers);
          default:
            if (decorators || modifiers) {
              var node = createMissingNode(234, true, ts.Diagnostics.Declaration_expected);
              node.pos = fullStart;
              node.decorators = decorators;
              setModifiers(node, modifiers);
              return finishNode(node);
            }
        }
      }
      function nextTokenIsIdentifierOrStringLiteralOnSameLine() {
        nextToken();
        return !scanner.hasPrecedingLineBreak() && (isIdentifier() || token === 9);
      }
      function parseFunctionBlockOrSemicolon(isGenerator, isAsync, diagnosticMessage) {
        if (token !== 15 && canParseSemicolon()) {
          parseSemicolon();
          return;
        }
        return parseFunctionBlock(isGenerator, isAsync, false, diagnosticMessage);
      }
      function parseArrayBindingElement() {
        if (token === 24) {
          return createNode(190);
        }
        var node = createNode(166);
        node.dotDotDotToken = parseOptionalToken(22);
        node.name = parseIdentifierOrPattern();
        node.initializer = parseBindingElementInitializer(false);
        return finishNode(node);
      }
      function parseObjectBindingElement() {
        var node = createNode(166);
        var tokenIsIdentifier = isIdentifier();
        var propertyName = parsePropertyName();
        if (tokenIsIdentifier && token !== 54) {
          node.name = propertyName;
        } else {
          parseExpected(54);
          node.propertyName = propertyName;
          node.name = parseIdentifierOrPattern();
        }
        node.initializer = parseBindingElementInitializer(false);
        return finishNode(node);
      }
      function parseObjectBindingPattern() {
        var node = createNode(164);
        parseExpected(15);
        node.elements = parseDelimitedList(9, parseObjectBindingElement);
        parseExpected(16);
        return finishNode(node);
      }
      function parseArrayBindingPattern() {
        var node = createNode(165);
        parseExpected(19);
        node.elements = parseDelimitedList(10, parseArrayBindingElement);
        parseExpected(20);
        return finishNode(node);
      }
      function isIdentifierOrPattern() {
        return token === 15 || token === 19 || isIdentifier();
      }
      function parseIdentifierOrPattern() {
        if (token === 19) {
          return parseArrayBindingPattern();
        }
        if (token === 15) {
          return parseObjectBindingPattern();
        }
        return parseIdentifier();
      }
      function parseVariableDeclaration() {
        var node = createNode(214);
        node.name = parseIdentifierOrPattern();
        node.type = parseTypeAnnotation();
        if (!isInOrOfKeyword(token)) {
          node.initializer = parseInitializer(false);
        }
        return finishNode(node);
      }
      function parseVariableDeclarationList(inForStatementInitializer) {
        var node = createNode(215);
        switch (token) {
          case 102:
            break;
          case 108:
            node.flags |= 8192;
            break;
          case 74:
            node.flags |= 16384;
            break;
          default:
            ts.Debug.fail();
        }
        nextToken();
        if (token === 135 && lookAhead(canFollowContextualOfKeyword)) {
          node.declarations = createMissingList();
        } else {
          var savedDisallowIn = inDisallowInContext();
          setDisallowInContext(inForStatementInitializer);
          node.declarations = parseDelimitedList(8, parseVariableDeclaration);
          setDisallowInContext(savedDisallowIn);
        }
        return finishNode(node);
      }
      function canFollowContextualOfKeyword() {
        return nextTokenIsIdentifier() && nextToken() === 18;
      }
      function parseVariableStatement(fullStart, decorators, modifiers) {
        var node = createNode(196, fullStart);
        node.decorators = decorators;
        setModifiers(node, modifiers);
        node.declarationList = parseVariableDeclarationList(false);
        parseSemicolon();
        return addJSDocComment(finishNode(node));
      }
      function parseFunctionDeclaration(fullStart, decorators, modifiers) {
        var node = createNode(216, fullStart);
        node.decorators = decorators;
        setModifiers(node, modifiers);
        parseExpected(87);
        node.asteriskToken = parseOptionalToken(37);
        node.name = node.flags & 512 ? parseOptionalIdentifier() : parseIdentifier();
        var isGenerator = !!node.asteriskToken;
        var isAsync = !!(node.flags & 256);
        fillSignature(54, isGenerator, isAsync, false, node);
        node.body = parseFunctionBlockOrSemicolon(isGenerator, isAsync, ts.Diagnostics.or_expected);
        return addJSDocComment(finishNode(node));
      }
      function parseConstructorDeclaration(pos, decorators, modifiers) {
        var node = createNode(145, pos);
        node.decorators = decorators;
        setModifiers(node, modifiers);
        parseExpected(121);
        fillSignature(54, false, false, false, node);
        node.body = parseFunctionBlockOrSemicolon(false, false, ts.Diagnostics.or_expected);
        return addJSDocComment(finishNode(node));
      }
      function parseMethodDeclaration(fullStart, decorators, modifiers, asteriskToken, name, questionToken, diagnosticMessage) {
        var method = createNode(144, fullStart);
        method.decorators = decorators;
        setModifiers(method, modifiers);
        method.asteriskToken = asteriskToken;
        method.name = name;
        method.questionToken = questionToken;
        var isGenerator = !!asteriskToken;
        var isAsync = !!(method.flags & 256);
        fillSignature(54, isGenerator, isAsync, false, method);
        method.body = parseFunctionBlockOrSemicolon(isGenerator, isAsync, diagnosticMessage);
        return addJSDocComment(finishNode(method));
      }
      function parsePropertyDeclaration(fullStart, decorators, modifiers, name, questionToken) {
        var property = createNode(142, fullStart);
        property.decorators = decorators;
        setModifiers(property, modifiers);
        property.name = name;
        property.questionToken = questionToken;
        property.type = parseTypeAnnotation();
        property.initializer = modifiers && modifiers.flags & 64 ? allowInAnd(parseNonParameterInitializer) : doOutsideOfContext(2 | 1, parseNonParameterInitializer);
        parseSemicolon();
        return finishNode(property);
      }
      function parsePropertyOrMethodDeclaration(fullStart, decorators, modifiers) {
        var asteriskToken = parseOptionalToken(37);
        var name = parsePropertyName();
        var questionToken = parseOptionalToken(53);
        if (asteriskToken || token === 17 || token === 25) {
          return parseMethodDeclaration(fullStart, decorators, modifiers, asteriskToken, name, questionToken, ts.Diagnostics.or_expected);
        } else {
          return parsePropertyDeclaration(fullStart, decorators, modifiers, name, questionToken);
        }
      }
      function parseNonParameterInitializer() {
        return parseInitializer(false);
      }
      function parseAccessorDeclaration(kind, fullStart, decorators, modifiers) {
        var node = createNode(kind, fullStart);
        node.decorators = decorators;
        setModifiers(node, modifiers);
        node.name = parsePropertyName();
        fillSignature(54, false, false, false, node);
        node.body = parseFunctionBlockOrSemicolon(false, false);
        return finishNode(node);
      }
      function isClassMemberModifier(idToken) {
        switch (idToken) {
          case 112:
          case 110:
          case 111:
          case 113:
            return true;
          default:
            return false;
        }
      }
      function isClassMemberStart() {
        var idToken;
        if (token === 55) {
          return true;
        }
        while (ts.isModifierKind(token)) {
          idToken = token;
          if (isClassMemberModifier(idToken)) {
            return true;
          }
          nextToken();
        }
        if (token === 37) {
          return true;
        }
        if (isLiteralPropertyName()) {
          idToken = token;
          nextToken();
        }
        if (token === 19) {
          return true;
        }
        if (idToken !== undefined) {
          if (!ts.isKeyword(idToken) || idToken === 129 || idToken === 123) {
            return true;
          }
          switch (token) {
            case 17:
            case 25:
            case 54:
            case 56:
            case 53:
              return true;
            default:
              return canParseSemicolon();
          }
        }
        return false;
      }
      function parseDecorators() {
        var decorators;
        while (true) {
          var decoratorStart = getNodePos();
          if (!parseOptional(55)) {
            break;
          }
          if (!decorators) {
            decorators = [];
            decorators.pos = decoratorStart;
          }
          var decorator = createNode(140, decoratorStart);
          decorator.expression = doInDecoratorContext(parseLeftHandSideExpressionOrHigher);
          decorators.push(finishNode(decorator));
        }
        if (decorators) {
          decorators.end = getNodeEnd();
        }
        return decorators;
      }
      function parseModifiers(permitInvalidConstAsModifier) {
        var flags = 0;
        var modifiers;
        while (true) {
          var modifierStart = scanner.getStartPos();
          var modifierKind = token;
          if (token === 74 && permitInvalidConstAsModifier) {
            if (!tryParse(nextTokenIsOnSameLineAndCanFollowModifier)) {
              break;
            }
          } else {
            if (!parseAnyContextualModifier()) {
              break;
            }
          }
          if (!modifiers) {
            modifiers = [];
            modifiers.pos = modifierStart;
          }
          flags |= ts.modifierToFlag(modifierKind);
          modifiers.push(finishNode(createNode(modifierKind, modifierStart)));
        }
        if (modifiers) {
          modifiers.flags = flags;
          modifiers.end = scanner.getStartPos();
        }
        return modifiers;
      }
      function parseModifiersForArrowFunction() {
        var flags = 0;
        var modifiers;
        if (token === 118) {
          var modifierStart = scanner.getStartPos();
          var modifierKind = token;
          nextToken();
          modifiers = [];
          modifiers.pos = modifierStart;
          flags |= ts.modifierToFlag(modifierKind);
          modifiers.push(finishNode(createNode(modifierKind, modifierStart)));
          modifiers.flags = flags;
          modifiers.end = scanner.getStartPos();
        }
        return modifiers;
      }
      function parseClassElement() {
        if (token === 23) {
          var result = createNode(194);
          nextToken();
          return finishNode(result);
        }
        var fullStart = getNodePos();
        var decorators = parseDecorators();
        var modifiers = parseModifiers(true);
        var accessor = tryParseAccessorDeclaration(fullStart, decorators, modifiers);
        if (accessor) {
          return accessor;
        }
        if (token === 121) {
          return parseConstructorDeclaration(fullStart, decorators, modifiers);
        }
        if (isIndexSignature()) {
          return parseIndexSignatureDeclaration(fullStart, decorators, modifiers);
        }
        if (ts.tokenIsIdentifierOrKeyword(token) || token === 9 || token === 8 || token === 37 || token === 19) {
          return parsePropertyOrMethodDeclaration(fullStart, decorators, modifiers);
        }
        if (decorators || modifiers) {
          var name_7 = createMissingNode(69, true, ts.Diagnostics.Declaration_expected);
          return parsePropertyDeclaration(fullStart, decorators, modifiers, name_7, undefined);
        }
        ts.Debug.fail("Should not have attempted to parse class member declaration.");
      }
      function parseClassExpression() {
        return parseClassDeclarationOrExpression(scanner.getStartPos(), undefined, undefined, 189);
      }
      function parseClassDeclaration(fullStart, decorators, modifiers) {
        return parseClassDeclarationOrExpression(fullStart, decorators, modifiers, 217);
      }
      function parseClassDeclarationOrExpression(fullStart, decorators, modifiers, kind) {
        var node = createNode(kind, fullStart);
        node.decorators = decorators;
        setModifiers(node, modifiers);
        parseExpected(73);
        node.name = parseNameOfClassDeclarationOrExpression();
        node.typeParameters = parseTypeParameters();
        node.heritageClauses = parseHeritageClauses(true);
        if (parseExpected(15)) {
          node.members = parseClassMembers();
          parseExpected(16);
        } else {
          node.members = createMissingList();
        }
        return finishNode(node);
      }
      function parseNameOfClassDeclarationOrExpression() {
        return isIdentifier() && !isImplementsClause() ? parseIdentifier() : undefined;
      }
      function isImplementsClause() {
        return token === 106 && lookAhead(nextTokenIsIdentifierOrKeyword);
      }
      function parseHeritageClauses(isClassHeritageClause) {
        if (isHeritageClause()) {
          return parseList(20, parseHeritageClause);
        }
        return undefined;
      }
      function parseHeritageClause() {
        if (token === 83 || token === 106) {
          var node = createNode(246);
          node.token = token;
          nextToken();
          node.types = parseDelimitedList(7, parseExpressionWithTypeArguments);
          return finishNode(node);
        }
        return undefined;
      }
      function parseExpressionWithTypeArguments() {
        var node = createNode(191);
        node.expression = parseLeftHandSideExpressionOrHigher();
        if (token === 25) {
          node.typeArguments = parseBracketedList(18, parseType, 25, 27);
        }
        return finishNode(node);
      }
      function isHeritageClause() {
        return token === 83 || token === 106;
      }
      function parseClassMembers() {
        return parseList(5, parseClassElement);
      }
      function parseInterfaceDeclaration(fullStart, decorators, modifiers) {
        var node = createNode(218, fullStart);
        node.decorators = decorators;
        setModifiers(node, modifiers);
        parseExpected(107);
        node.name = parseIdentifier();
        node.typeParameters = parseTypeParameters();
        node.heritageClauses = parseHeritageClauses(false);
        node.members = parseObjectTypeMembers();
        return finishNode(node);
      }
      function parseTypeAliasDeclaration(fullStart, decorators, modifiers) {
        var node = createNode(219, fullStart);
        node.decorators = decorators;
        setModifiers(node, modifiers);
        parseExpected(132);
        node.name = parseIdentifier();
        node.typeParameters = parseTypeParameters();
        parseExpected(56);
        node.type = parseType();
        parseSemicolon();
        return finishNode(node);
      }
      function parseEnumMember() {
        var node = createNode(250, scanner.getStartPos());
        node.name = parsePropertyName();
        node.initializer = allowInAnd(parseNonParameterInitializer);
        return finishNode(node);
      }
      function parseEnumDeclaration(fullStart, decorators, modifiers) {
        var node = createNode(220, fullStart);
        node.decorators = decorators;
        setModifiers(node, modifiers);
        parseExpected(81);
        node.name = parseIdentifier();
        if (parseExpected(15)) {
          node.members = parseDelimitedList(6, parseEnumMember);
          parseExpected(16);
        } else {
          node.members = createMissingList();
        }
        return finishNode(node);
      }
      function parseModuleBlock() {
        var node = createNode(222, scanner.getStartPos());
        if (parseExpected(15)) {
          node.statements = parseList(1, parseStatement);
          parseExpected(16);
        } else {
          node.statements = createMissingList();
        }
        return finishNode(node);
      }
      function parseModuleOrNamespaceDeclaration(fullStart, decorators, modifiers, flags) {
        var node = createNode(221, fullStart);
        var namespaceFlag = flags & 65536;
        node.decorators = decorators;
        setModifiers(node, modifiers);
        node.flags |= flags;
        node.name = parseIdentifier();
        node.body = parseOptional(21) ? parseModuleOrNamespaceDeclaration(getNodePos(), undefined, undefined, 2 | namespaceFlag) : parseModuleBlock();
        return finishNode(node);
      }
      function parseAmbientExternalModuleDeclaration(fullStart, decorators, modifiers) {
        var node = createNode(221, fullStart);
        node.decorators = decorators;
        setModifiers(node, modifiers);
        if (token === 134) {
          node.name = parseIdentifier();
          node.flags |= 2097152;
        } else {
          node.name = parseLiteralNode(true);
        }
        node.body = parseModuleBlock();
        return finishNode(node);
      }
      function parseModuleDeclaration(fullStart, decorators, modifiers) {
        var flags = modifiers ? modifiers.flags : 0;
        if (token === 134) {
          return parseAmbientExternalModuleDeclaration(fullStart, decorators, modifiers);
        } else if (parseOptional(126)) {
          flags |= 65536;
        } else {
          parseExpected(125);
          if (token === 9) {
            return parseAmbientExternalModuleDeclaration(fullStart, decorators, modifiers);
          }
        }
        return parseModuleOrNamespaceDeclaration(fullStart, decorators, modifiers, flags);
      }
      function isExternalModuleReference() {
        return token === 127 && lookAhead(nextTokenIsOpenParen);
      }
      function nextTokenIsOpenParen() {
        return nextToken() === 17;
      }
      function nextTokenIsSlash() {
        return nextToken() === 39;
      }
      function parseImportDeclarationOrImportEqualsDeclaration(fullStart, decorators, modifiers) {
        parseExpected(89);
        var afterImportPos = scanner.getStartPos();
        var identifier;
        if (isIdentifier()) {
          identifier = parseIdentifier();
          if (token !== 24 && token !== 133) {
            var importEqualsDeclaration = createNode(224, fullStart);
            importEqualsDeclaration.decorators = decorators;
            setModifiers(importEqualsDeclaration, modifiers);
            importEqualsDeclaration.name = identifier;
            parseExpected(56);
            importEqualsDeclaration.moduleReference = parseModuleReference();
            parseSemicolon();
            return finishNode(importEqualsDeclaration);
          }
        }
        var importDeclaration = createNode(225, fullStart);
        importDeclaration.decorators = decorators;
        setModifiers(importDeclaration, modifiers);
        if (identifier || token === 37 || token === 15) {
          importDeclaration.importClause = parseImportClause(identifier, afterImportPos);
          parseExpected(133);
        }
        importDeclaration.moduleSpecifier = parseModuleSpecifier();
        parseSemicolon();
        return finishNode(importDeclaration);
      }
      function parseImportClause(identifier, fullStart) {
        var importClause = createNode(226, fullStart);
        if (identifier) {
          importClause.name = identifier;
        }
        if (!importClause.name || parseOptional(24)) {
          importClause.namedBindings = token === 37 ? parseNamespaceImport() : parseNamedImportsOrExports(228);
        }
        return finishNode(importClause);
      }
      function parseModuleReference() {
        return isExternalModuleReference() ? parseExternalModuleReference() : parseEntityName(false);
      }
      function parseExternalModuleReference() {
        var node = createNode(235);
        parseExpected(127);
        parseExpected(17);
        node.expression = parseModuleSpecifier();
        parseExpected(18);
        return finishNode(node);
      }
      function parseModuleSpecifier() {
        if (token === 9) {
          var result = parseLiteralNode();
          internIdentifier(result.text);
          return result;
        } else {
          return parseExpression();
        }
      }
      function parseNamespaceImport() {
        var namespaceImport = createNode(227);
        parseExpected(37);
        parseExpected(116);
        namespaceImport.name = parseIdentifier();
        return finishNode(namespaceImport);
      }
      function parseNamedImportsOrExports(kind) {
        var node = createNode(kind);
        node.elements = parseBracketedList(21, kind === 228 ? parseImportSpecifier : parseExportSpecifier, 15, 16);
        return finishNode(node);
      }
      function parseExportSpecifier() {
        return parseImportOrExportSpecifier(233);
      }
      function parseImportSpecifier() {
        return parseImportOrExportSpecifier(229);
      }
      function parseImportOrExportSpecifier(kind) {
        var node = createNode(kind);
        var checkIdentifierIsKeyword = ts.isKeyword(token) && !isIdentifier();
        var checkIdentifierStart = scanner.getTokenPos();
        var checkIdentifierEnd = scanner.getTextPos();
        var identifierName = parseIdentifierName();
        if (token === 116) {
          node.propertyName = identifierName;
          parseExpected(116);
          checkIdentifierIsKeyword = ts.isKeyword(token) && !isIdentifier();
          checkIdentifierStart = scanner.getTokenPos();
          checkIdentifierEnd = scanner.getTextPos();
          node.name = parseIdentifierName();
        } else {
          node.name = identifierName;
        }
        if (kind === 229 && checkIdentifierIsKeyword) {
          parseErrorAtPosition(checkIdentifierStart, checkIdentifierEnd - checkIdentifierStart, ts.Diagnostics.Identifier_expected);
        }
        return finishNode(node);
      }
      function parseExportDeclaration(fullStart, decorators, modifiers) {
        var node = createNode(231, fullStart);
        node.decorators = decorators;
        setModifiers(node, modifiers);
        if (parseOptional(37)) {
          parseExpected(133);
          node.moduleSpecifier = parseModuleSpecifier();
        } else {
          node.exportClause = parseNamedImportsOrExports(232);
          if (token === 133 || (token === 9 && !scanner.hasPrecedingLineBreak())) {
            parseExpected(133);
            node.moduleSpecifier = parseModuleSpecifier();
          }
        }
        parseSemicolon();
        return finishNode(node);
      }
      function parseExportAssignment(fullStart, decorators, modifiers) {
        var node = createNode(230, fullStart);
        node.decorators = decorators;
        setModifiers(node, modifiers);
        if (parseOptional(56)) {
          node.isExportEquals = true;
        } else {
          parseExpected(77);
        }
        node.expression = parseAssignmentExpressionOrHigher();
        parseSemicolon();
        return finishNode(node);
      }
      function processReferenceComments(sourceFile) {
        var triviaScanner = ts.createScanner(sourceFile.languageVersion, false, 0, sourceText);
        var referencedFiles = [];
        var amdDependencies = [];
        var amdModuleName;
        while (true) {
          var kind = triviaScanner.scan();
          if (kind !== 2) {
            if (ts.isTrivia(kind)) {
              continue;
            } else {
              break;
            }
          }
          var range = {
            pos: triviaScanner.getTokenPos(),
            end: triviaScanner.getTextPos(),
            kind: triviaScanner.getToken()
          };
          var comment = sourceText.substring(range.pos, range.end);
          var referencePathMatchResult = ts.getFileReferenceFromReferencePath(comment, range);
          if (referencePathMatchResult) {
            var fileReference = referencePathMatchResult.fileReference;
            sourceFile.hasNoDefaultLib = referencePathMatchResult.isNoDefaultLib;
            var diagnosticMessage = referencePathMatchResult.diagnosticMessage;
            if (fileReference) {
              referencedFiles.push(fileReference);
            }
            if (diagnosticMessage) {
              parseDiagnostics.push(ts.createFileDiagnostic(sourceFile, range.pos, range.end - range.pos, diagnosticMessage));
            }
          } else {
            var amdModuleNameRegEx = /^\/\/\/\s*<amd-module\s+name\s*=\s*('|")(.+?)\1/gim;
            var amdModuleNameMatchResult = amdModuleNameRegEx.exec(comment);
            if (amdModuleNameMatchResult) {
              if (amdModuleName) {
                parseDiagnostics.push(ts.createFileDiagnostic(sourceFile, range.pos, range.end - range.pos, ts.Diagnostics.An_AMD_module_cannot_have_multiple_name_assignments));
              }
              amdModuleName = amdModuleNameMatchResult[2];
            }
            var amdDependencyRegEx = /^\/\/\/\s*<amd-dependency\s/gim;
            var pathRegex = /\spath\s*=\s*('|")(.+?)\1/gim;
            var nameRegex = /\sname\s*=\s*('|")(.+?)\1/gim;
            var amdDependencyMatchResult = amdDependencyRegEx.exec(comment);
            if (amdDependencyMatchResult) {
              var pathMatchResult = pathRegex.exec(comment);
              var nameMatchResult = nameRegex.exec(comment);
              if (pathMatchResult) {
                var amdDependency = {
                  path: pathMatchResult[2],
                  name: nameMatchResult ? nameMatchResult[2] : undefined
                };
                amdDependencies.push(amdDependency);
              }
            }
          }
        }
        sourceFile.referencedFiles = referencedFiles;
        sourceFile.amdDependencies = amdDependencies;
        sourceFile.moduleName = amdModuleName;
      }
      function setExternalModuleIndicator(sourceFile) {
        sourceFile.externalModuleIndicator = ts.forEach(sourceFile.statements, function(node) {
          return node.flags & 2 || node.kind === 224 && node.moduleReference.kind === 235 || node.kind === 225 || node.kind === 230 || node.kind === 231 ? node : undefined;
        });
      }
      var JSDocParser;
      (function(JSDocParser) {
        function isJSDocType() {
          switch (token) {
            case 37:
            case 53:
            case 17:
            case 19:
            case 49:
            case 15:
            case 87:
            case 22:
            case 92:
            case 97:
              return true;
          }
          return ts.tokenIsIdentifierOrKeyword(token);
        }
        JSDocParser.isJSDocType = isJSDocType;
        function parseJSDocTypeExpressionForTests(content, start, length) {
          initializeState("file.js", content, 2, undefined, 1);
          scanner.setText(content, start, length);
          token = scanner.scan();
          var jsDocTypeExpression = parseJSDocTypeExpression();
          var diagnostics = parseDiagnostics;
          clearState();
          return jsDocTypeExpression ? {
            jsDocTypeExpression: jsDocTypeExpression,
            diagnostics: diagnostics
          } : undefined;
        }
        JSDocParser.parseJSDocTypeExpressionForTests = parseJSDocTypeExpressionForTests;
        function parseJSDocTypeExpression() {
          var result = createNode(252, scanner.getTokenPos());
          parseExpected(15);
          result.type = parseJSDocTopLevelType();
          parseExpected(16);
          fixupParentReferences(result);
          return finishNode(result);
        }
        JSDocParser.parseJSDocTypeExpression = parseJSDocTypeExpression;
        function parseJSDocTopLevelType() {
          var type = parseJSDocType();
          if (token === 47) {
            var unionType = createNode(256, type.pos);
            unionType.types = parseJSDocTypeList(type);
            type = finishNode(unionType);
          }
          if (token === 56) {
            var optionalType = createNode(263, type.pos);
            nextToken();
            optionalType.type = type;
            type = finishNode(optionalType);
          }
          return type;
        }
        function parseJSDocType() {
          var type = parseBasicTypeExpression();
          while (true) {
            if (token === 19) {
              var arrayType = createNode(255, type.pos);
              arrayType.elementType = type;
              nextToken();
              parseExpected(20);
              type = finishNode(arrayType);
            } else if (token === 53) {
              var nullableType = createNode(258, type.pos);
              nullableType.type = type;
              nextToken();
              type = finishNode(nullableType);
            } else if (token === 49) {
              var nonNullableType = createNode(259, type.pos);
              nonNullableType.type = type;
              nextToken();
              type = finishNode(nonNullableType);
            } else {
              break;
            }
          }
          return type;
        }
        function parseBasicTypeExpression() {
          switch (token) {
            case 37:
              return parseJSDocAllType();
            case 53:
              return parseJSDocUnknownOrNullableType();
            case 17:
              return parseJSDocUnionType();
            case 19:
              return parseJSDocTupleType();
            case 49:
              return parseJSDocNonNullableType();
            case 15:
              return parseJSDocRecordType();
            case 87:
              return parseJSDocFunctionType();
            case 22:
              return parseJSDocVariadicType();
            case 92:
              return parseJSDocConstructorType();
            case 97:
              return parseJSDocThisType();
            case 117:
            case 130:
            case 128:
            case 120:
            case 131:
            case 103:
              return parseTokenNode();
          }
          return parseJSDocTypeReference();
        }
        function parseJSDocThisType() {
          var result = createNode(267);
          nextToken();
          parseExpected(54);
          result.type = parseJSDocType();
          return finishNode(result);
        }
        function parseJSDocConstructorType() {
          var result = createNode(266);
          nextToken();
          parseExpected(54);
          result.type = parseJSDocType();
          return finishNode(result);
        }
        function parseJSDocVariadicType() {
          var result = createNode(265);
          nextToken();
          result.type = parseJSDocType();
          return finishNode(result);
        }
        function parseJSDocFunctionType() {
          var result = createNode(264);
          nextToken();
          parseExpected(17);
          result.parameters = parseDelimitedList(22, parseJSDocParameter);
          checkForTrailingComma(result.parameters);
          parseExpected(18);
          if (token === 54) {
            nextToken();
            result.type = parseJSDocType();
          }
          return finishNode(result);
        }
        function parseJSDocParameter() {
          var parameter = createNode(139);
          parameter.type = parseJSDocType();
          if (parseOptional(56)) {
            parameter.questionToken = createNode(56);
          }
          return finishNode(parameter);
        }
        function parseJSDocTypeReference() {
          var result = createNode(262);
          result.name = parseSimplePropertyName();
          if (token === 25) {
            result.typeArguments = parseTypeArguments();
          } else {
            while (parseOptional(21)) {
              if (token === 25) {
                result.typeArguments = parseTypeArguments();
                break;
              } else {
                result.name = parseQualifiedName(result.name);
              }
            }
          }
          return finishNode(result);
        }
        function parseTypeArguments() {
          nextToken();
          var typeArguments = parseDelimitedList(23, parseJSDocType);
          checkForTrailingComma(typeArguments);
          checkForEmptyTypeArgumentList(typeArguments);
          parseExpected(27);
          return typeArguments;
        }
        function checkForEmptyTypeArgumentList(typeArguments) {
          if (parseDiagnostics.length === 0 && typeArguments && typeArguments.length === 0) {
            var start = typeArguments.pos - "<".length;
            var end = ts.skipTrivia(sourceText, typeArguments.end) + ">".length;
            return parseErrorAtPosition(start, end - start, ts.Diagnostics.Type_argument_list_cannot_be_empty);
          }
        }
        function parseQualifiedName(left) {
          var result = createNode(136, left.pos);
          result.left = left;
          result.right = parseIdentifierName();
          return finishNode(result);
        }
        function parseJSDocRecordType() {
          var result = createNode(260);
          nextToken();
          result.members = parseDelimitedList(24, parseJSDocRecordMember);
          checkForTrailingComma(result.members);
          parseExpected(16);
          return finishNode(result);
        }
        function parseJSDocRecordMember() {
          var result = createNode(261);
          result.name = parseSimplePropertyName();
          if (token === 54) {
            nextToken();
            result.type = parseJSDocType();
          }
          return finishNode(result);
        }
        function parseJSDocNonNullableType() {
          var result = createNode(259);
          nextToken();
          result.type = parseJSDocType();
          return finishNode(result);
        }
        function parseJSDocTupleType() {
          var result = createNode(257);
          nextToken();
          result.types = parseDelimitedList(25, parseJSDocType);
          checkForTrailingComma(result.types);
          parseExpected(20);
          return finishNode(result);
        }
        function checkForTrailingComma(list) {
          if (parseDiagnostics.length === 0 && list.hasTrailingComma) {
            var start = list.end - ",".length;
            parseErrorAtPosition(start, ",".length, ts.Diagnostics.Trailing_comma_not_allowed);
          }
        }
        function parseJSDocUnionType() {
          var result = createNode(256);
          nextToken();
          result.types = parseJSDocTypeList(parseJSDocType());
          parseExpected(18);
          return finishNode(result);
        }
        function parseJSDocTypeList(firstType) {
          ts.Debug.assert(!!firstType);
          var types = [];
          types.pos = firstType.pos;
          types.push(firstType);
          while (parseOptional(47)) {
            types.push(parseJSDocType());
          }
          types.end = scanner.getStartPos();
          return types;
        }
        function parseJSDocAllType() {
          var result = createNode(253);
          nextToken();
          return finishNode(result);
        }
        function parseJSDocUnknownOrNullableType() {
          var pos = scanner.getStartPos();
          nextToken();
          if (token === 24 || token === 16 || token === 18 || token === 27 || token === 56 || token === 47) {
            var result = createNode(254, pos);
            return finishNode(result);
          } else {
            var result = createNode(258, pos);
            result.type = parseJSDocType();
            return finishNode(result);
          }
        }
        function parseIsolatedJSDocComment(content, start, length) {
          initializeState("file.js", content, 2, undefined, 1);
          sourceFile = {
            languageVariant: 0,
            text: content
          };
          var jsDocComment = parseJSDocCommentWorker(start, length);
          var diagnostics = parseDiagnostics;
          clearState();
          return jsDocComment ? {
            jsDocComment: jsDocComment,
            diagnostics: diagnostics
          } : undefined;
        }
        JSDocParser.parseIsolatedJSDocComment = parseIsolatedJSDocComment;
        function parseJSDocComment(parent, start, length) {
          var saveToken = token;
          var saveParseDiagnosticsLength = parseDiagnostics.length;
          var saveParseErrorBeforeNextFinishedNode = parseErrorBeforeNextFinishedNode;
          var comment = parseJSDocCommentWorker(start, length);
          if (comment) {
            comment.parent = parent;
          }
          token = saveToken;
          parseDiagnostics.length = saveParseDiagnosticsLength;
          parseErrorBeforeNextFinishedNode = saveParseErrorBeforeNextFinishedNode;
          return comment;
        }
        JSDocParser.parseJSDocComment = parseJSDocComment;
        function parseJSDocCommentWorker(start, length) {
          var content = sourceText;
          start = start || 0;
          var end = length === undefined ? content.length : start + length;
          length = end - start;
          ts.Debug.assert(start >= 0);
          ts.Debug.assert(start <= end);
          ts.Debug.assert(end <= content.length);
          var tags;
          var result;
          if (content.charCodeAt(start) === 47 && content.charCodeAt(start + 1) === 42 && content.charCodeAt(start + 2) === 42 && content.charCodeAt(start + 3) !== 42) {
            scanner.scanRange(start + 3, length - 5, function() {
              var canParseTag = true;
              var seenAsterisk = true;
              nextJSDocToken();
              while (token !== 1) {
                switch (token) {
                  case 55:
                    if (canParseTag) {
                      parseTag();
                    }
                    seenAsterisk = false;
                    break;
                  case 4:
                    canParseTag = true;
                    seenAsterisk = false;
                    break;
                  case 37:
                    if (seenAsterisk) {
                      canParseTag = false;
                    }
                    seenAsterisk = true;
                    break;
                  case 69:
                    canParseTag = false;
                    break;
                  case 1:
                    break;
                }
                nextJSDocToken();
              }
              result = createJSDocComment();
            });
          }
          return result;
          function createJSDocComment() {
            if (!tags) {
              return undefined;
            }
            var result = createNode(268, start);
            result.tags = tags;
            return finishNode(result, end);
          }
          function skipWhitespace() {
            while (token === 5 || token === 4) {
              nextJSDocToken();
            }
          }
          function parseTag() {
            ts.Debug.assert(token === 55);
            var atToken = createNode(55, scanner.getTokenPos());
            atToken.end = scanner.getTextPos();
            nextJSDocToken();
            var tagName = parseJSDocIdentifier();
            if (!tagName) {
              return;
            }
            var tag = handleTag(atToken, tagName) || handleUnknownTag(atToken, tagName);
            addTag(tag);
          }
          function handleTag(atToken, tagName) {
            if (tagName) {
              switch (tagName.text) {
                case "param":
                  return handleParamTag(atToken, tagName);
                case "return":
                case "returns":
                  return handleReturnTag(atToken, tagName);
                case "template":
                  return handleTemplateTag(atToken, tagName);
                case "type":
                  return handleTypeTag(atToken, tagName);
              }
            }
            return undefined;
          }
          function handleUnknownTag(atToken, tagName) {
            var result = createNode(269, atToken.pos);
            result.atToken = atToken;
            result.tagName = tagName;
            return finishNode(result);
          }
          function addTag(tag) {
            if (tag) {
              if (!tags) {
                tags = [];
                tags.pos = tag.pos;
              }
              tags.push(tag);
              tags.end = tag.end;
            }
          }
          function tryParseTypeExpression() {
            if (token !== 15) {
              return undefined;
            }
            var typeExpression = parseJSDocTypeExpression();
            return typeExpression;
          }
          function handleParamTag(atToken, tagName) {
            var typeExpression = tryParseTypeExpression();
            skipWhitespace();
            var name;
            var isBracketed;
            if (parseOptionalToken(19)) {
              name = parseJSDocIdentifier();
              isBracketed = true;
              if (parseOptionalToken(56)) {
                parseExpression();
              }
              parseExpected(20);
            } else if (token === 69) {
              name = parseJSDocIdentifier();
            }
            if (!name) {
              parseErrorAtPosition(scanner.getStartPos(), 0, ts.Diagnostics.Identifier_expected);
              return undefined;
            }
            var preName,
                postName;
            if (typeExpression) {
              postName = name;
            } else {
              preName = name;
            }
            if (!typeExpression) {
              typeExpression = tryParseTypeExpression();
            }
            var result = createNode(270, atToken.pos);
            result.atToken = atToken;
            result.tagName = tagName;
            result.preParameterName = preName;
            result.typeExpression = typeExpression;
            result.postParameterName = postName;
            result.isBracketed = isBracketed;
            return finishNode(result);
          }
          function handleReturnTag(atToken, tagName) {
            if (ts.forEach(tags, function(t) {
              return t.kind === 271;
            })) {
              parseErrorAtPosition(tagName.pos, scanner.getTokenPos() - tagName.pos, ts.Diagnostics._0_tag_already_specified, tagName.text);
            }
            var result = createNode(271, atToken.pos);
            result.atToken = atToken;
            result.tagName = tagName;
            result.typeExpression = tryParseTypeExpression();
            return finishNode(result);
          }
          function handleTypeTag(atToken, tagName) {
            if (ts.forEach(tags, function(t) {
              return t.kind === 272;
            })) {
              parseErrorAtPosition(tagName.pos, scanner.getTokenPos() - tagName.pos, ts.Diagnostics._0_tag_already_specified, tagName.text);
            }
            var result = createNode(272, atToken.pos);
            result.atToken = atToken;
            result.tagName = tagName;
            result.typeExpression = tryParseTypeExpression();
            return finishNode(result);
          }
          function handleTemplateTag(atToken, tagName) {
            if (ts.forEach(tags, function(t) {
              return t.kind === 273;
            })) {
              parseErrorAtPosition(tagName.pos, scanner.getTokenPos() - tagName.pos, ts.Diagnostics._0_tag_already_specified, tagName.text);
            }
            var typeParameters = [];
            typeParameters.pos = scanner.getStartPos();
            while (true) {
              var name_8 = parseJSDocIdentifier();
              if (!name_8) {
                parseErrorAtPosition(scanner.getStartPos(), 0, ts.Diagnostics.Identifier_expected);
                return undefined;
              }
              var typeParameter = createNode(138, name_8.pos);
              typeParameter.name = name_8;
              finishNode(typeParameter);
              typeParameters.push(typeParameter);
              if (token === 24) {
                nextJSDocToken();
              } else {
                break;
              }
            }
            var result = createNode(273, atToken.pos);
            result.atToken = atToken;
            result.tagName = tagName;
            result.typeParameters = typeParameters;
            finishNode(result);
            typeParameters.end = result.end;
            return result;
          }
          function nextJSDocToken() {
            return token = scanner.scanJSDocToken();
          }
          function parseJSDocIdentifier() {
            if (token !== 69) {
              parseErrorAtCurrentToken(ts.Diagnostics.Identifier_expected);
              return undefined;
            }
            var pos = scanner.getTokenPos();
            var end = scanner.getTextPos();
            var result = createNode(69, pos);
            result.text = content.substring(pos, end);
            finishNode(result, end);
            nextJSDocToken();
            return result;
          }
        }
        JSDocParser.parseJSDocCommentWorker = parseJSDocCommentWorker;
      })(JSDocParser = Parser.JSDocParser || (Parser.JSDocParser = {}));
    })(Parser || (Parser = {}));
    var IncrementalParser;
    (function(IncrementalParser) {
      function updateSourceFile(sourceFile, newText, textChangeRange, aggressiveChecks) {
        aggressiveChecks = aggressiveChecks || ts.Debug.shouldAssert(2);
        checkChangeRange(sourceFile, newText, textChangeRange, aggressiveChecks);
        if (ts.textChangeRangeIsUnchanged(textChangeRange)) {
          return sourceFile;
        }
        if (sourceFile.statements.length === 0) {
          return Parser.parseSourceFile(sourceFile.fileName, newText, sourceFile.languageVersion, undefined, true, sourceFile.scriptKind);
        }
        var incrementalSourceFile = sourceFile;
        ts.Debug.assert(!incrementalSourceFile.hasBeenIncrementallyParsed);
        incrementalSourceFile.hasBeenIncrementallyParsed = true;
        var oldText = sourceFile.text;
        var syntaxCursor = createSyntaxCursor(sourceFile);
        var changeRange = extendToAffectedRange(sourceFile, textChangeRange);
        checkChangeRange(sourceFile, newText, changeRange, aggressiveChecks);
        ts.Debug.assert(changeRange.span.start <= textChangeRange.span.start);
        ts.Debug.assert(ts.textSpanEnd(changeRange.span) === ts.textSpanEnd(textChangeRange.span));
        ts.Debug.assert(ts.textSpanEnd(ts.textChangeRangeNewSpan(changeRange)) === ts.textSpanEnd(ts.textChangeRangeNewSpan(textChangeRange)));
        var delta = ts.textChangeRangeNewSpan(changeRange).length - changeRange.span.length;
        updateTokenPositionsAndMarkElements(incrementalSourceFile, changeRange.span.start, ts.textSpanEnd(changeRange.span), ts.textSpanEnd(ts.textChangeRangeNewSpan(changeRange)), delta, oldText, newText, aggressiveChecks);
        var result = Parser.parseSourceFile(sourceFile.fileName, newText, sourceFile.languageVersion, syntaxCursor, true, sourceFile.scriptKind);
        return result;
      }
      IncrementalParser.updateSourceFile = updateSourceFile;
      function moveElementEntirelyPastChangeRange(element, isArray, delta, oldText, newText, aggressiveChecks) {
        if (isArray) {
          visitArray(element);
        } else {
          visitNode(element);
        }
        return;
        function visitNode(node) {
          var text = "";
          if (aggressiveChecks && shouldCheckNode(node)) {
            text = oldText.substring(node.pos, node.end);
          }
          if (node._children) {
            node._children = undefined;
          }
          if (node.jsDocComment) {
            node.jsDocComment = undefined;
          }
          node.pos += delta;
          node.end += delta;
          if (aggressiveChecks && shouldCheckNode(node)) {
            ts.Debug.assert(text === newText.substring(node.pos, node.end));
          }
          forEachChild(node, visitNode, visitArray);
          checkNodePositions(node, aggressiveChecks);
        }
        function visitArray(array) {
          array._children = undefined;
          array.pos += delta;
          array.end += delta;
          for (var _i = 0,
              array_7 = array; _i < array_7.length; _i++) {
            var node = array_7[_i];
            visitNode(node);
          }
        }
      }
      function shouldCheckNode(node) {
        switch (node.kind) {
          case 9:
          case 8:
          case 69:
            return true;
        }
        return false;
      }
      function adjustIntersectingElement(element, changeStart, changeRangeOldEnd, changeRangeNewEnd, delta) {
        ts.Debug.assert(element.end >= changeStart, "Adjusting an element that was entirely before the change range");
        ts.Debug.assert(element.pos <= changeRangeOldEnd, "Adjusting an element that was entirely after the change range");
        ts.Debug.assert(element.pos <= element.end);
        element.pos = Math.min(element.pos, changeRangeNewEnd);
        if (element.end >= changeRangeOldEnd) {
          element.end += delta;
        } else {
          element.end = Math.min(element.end, changeRangeNewEnd);
        }
        ts.Debug.assert(element.pos <= element.end);
        if (element.parent) {
          ts.Debug.assert(element.pos >= element.parent.pos);
          ts.Debug.assert(element.end <= element.parent.end);
        }
      }
      function checkNodePositions(node, aggressiveChecks) {
        if (aggressiveChecks) {
          var pos_2 = node.pos;
          forEachChild(node, function(child) {
            ts.Debug.assert(child.pos >= pos_2);
            pos_2 = child.end;
          });
          ts.Debug.assert(pos_2 <= node.end);
        }
      }
      function updateTokenPositionsAndMarkElements(sourceFile, changeStart, changeRangeOldEnd, changeRangeNewEnd, delta, oldText, newText, aggressiveChecks) {
        visitNode(sourceFile);
        return;
        function visitNode(child) {
          ts.Debug.assert(child.pos <= child.end);
          if (child.pos > changeRangeOldEnd) {
            moveElementEntirelyPastChangeRange(child, false, delta, oldText, newText, aggressiveChecks);
            return;
          }
          var fullEnd = child.end;
          if (fullEnd >= changeStart) {
            child.intersectsChange = true;
            child._children = undefined;
            adjustIntersectingElement(child, changeStart, changeRangeOldEnd, changeRangeNewEnd, delta);
            forEachChild(child, visitNode, visitArray);
            checkNodePositions(child, aggressiveChecks);
            return;
          }
          ts.Debug.assert(fullEnd < changeStart);
        }
        function visitArray(array) {
          ts.Debug.assert(array.pos <= array.end);
          if (array.pos > changeRangeOldEnd) {
            moveElementEntirelyPastChangeRange(array, true, delta, oldText, newText, aggressiveChecks);
            return;
          }
          var fullEnd = array.end;
          if (fullEnd >= changeStart) {
            array.intersectsChange = true;
            array._children = undefined;
            adjustIntersectingElement(array, changeStart, changeRangeOldEnd, changeRangeNewEnd, delta);
            for (var _i = 0,
                array_8 = array; _i < array_8.length; _i++) {
              var node = array_8[_i];
              visitNode(node);
            }
            return;
          }
          ts.Debug.assert(fullEnd < changeStart);
        }
      }
      function extendToAffectedRange(sourceFile, changeRange) {
        var maxLookahead = 1;
        var start = changeRange.span.start;
        for (var i = 0; start > 0 && i <= maxLookahead; i++) {
          var nearestNode = findNearestNodeStartingBeforeOrAtPosition(sourceFile, start);
          ts.Debug.assert(nearestNode.pos <= start);
          var position = nearestNode.pos;
          start = Math.max(0, position - 1);
        }
        var finalSpan = ts.createTextSpanFromBounds(start, ts.textSpanEnd(changeRange.span));
        var finalLength = changeRange.newLength + (changeRange.span.start - start);
        return ts.createTextChangeRange(finalSpan, finalLength);
      }
      function findNearestNodeStartingBeforeOrAtPosition(sourceFile, position) {
        var bestResult = sourceFile;
        var lastNodeEntirelyBeforePosition;
        forEachChild(sourceFile, visit);
        if (lastNodeEntirelyBeforePosition) {
          var lastChildOfLastEntireNodeBeforePosition = getLastChild(lastNodeEntirelyBeforePosition);
          if (lastChildOfLastEntireNodeBeforePosition.pos > bestResult.pos) {
            bestResult = lastChildOfLastEntireNodeBeforePosition;
          }
        }
        return bestResult;
        function getLastChild(node) {
          while (true) {
            var lastChild = getLastChildWorker(node);
            if (lastChild) {
              node = lastChild;
            } else {
              return node;
            }
          }
        }
        function getLastChildWorker(node) {
          var last = undefined;
          forEachChild(node, function(child) {
            if (ts.nodeIsPresent(child)) {
              last = child;
            }
          });
          return last;
        }
        function visit(child) {
          if (ts.nodeIsMissing(child)) {
            return;
          }
          if (child.pos <= position) {
            if (child.pos >= bestResult.pos) {
              bestResult = child;
            }
            if (position < child.end) {
              forEachChild(child, visit);
              return true;
            } else {
              ts.Debug.assert(child.end <= position);
              lastNodeEntirelyBeforePosition = child;
            }
          } else {
            ts.Debug.assert(child.pos > position);
            return true;
          }
        }
      }
      function checkChangeRange(sourceFile, newText, textChangeRange, aggressiveChecks) {
        var oldText = sourceFile.text;
        if (textChangeRange) {
          ts.Debug.assert((oldText.length - textChangeRange.span.length + textChangeRange.newLength) === newText.length);
          if (aggressiveChecks || ts.Debug.shouldAssert(3)) {
            var oldTextPrefix = oldText.substr(0, textChangeRange.span.start);
            var newTextPrefix = newText.substr(0, textChangeRange.span.start);
            ts.Debug.assert(oldTextPrefix === newTextPrefix);
            var oldTextSuffix = oldText.substring(ts.textSpanEnd(textChangeRange.span), oldText.length);
            var newTextSuffix = newText.substring(ts.textSpanEnd(ts.textChangeRangeNewSpan(textChangeRange)), newText.length);
            ts.Debug.assert(oldTextSuffix === newTextSuffix);
          }
        }
      }
      function createSyntaxCursor(sourceFile) {
        var currentArray = sourceFile.statements;
        var currentArrayIndex = 0;
        ts.Debug.assert(currentArrayIndex < currentArray.length);
        var current = currentArray[currentArrayIndex];
        var lastQueriedPosition = -1;
        return {currentNode: function(position) {
            if (position !== lastQueriedPosition) {
              if (current && current.end === position && currentArrayIndex < (currentArray.length - 1)) {
                currentArrayIndex++;
                current = currentArray[currentArrayIndex];
              }
              if (!current || current.pos !== position) {
                findHighestListElementThatStartsAtPosition(position);
              }
            }
            lastQueriedPosition = position;
            ts.Debug.assert(!current || current.pos === position);
            return current;
          }};
        function findHighestListElementThatStartsAtPosition(position) {
          currentArray = undefined;
          currentArrayIndex = -1;
          current = undefined;
          forEachChild(sourceFile, visitNode, visitArray);
          return;
          function visitNode(node) {
            if (position >= node.pos && position < node.end) {
              forEachChild(node, visitNode, visitArray);
              return true;
            }
            return false;
          }
          function visitArray(array) {
            if (position >= array.pos && position < array.end) {
              for (var i = 0,
                  n = array.length; i < n; i++) {
                var child = array[i];
                if (child) {
                  if (child.pos === position) {
                    currentArray = array;
                    currentArrayIndex = i;
                    current = child;
                    return true;
                  } else {
                    if (child.pos < position && position < child.end) {
                      forEachChild(child, visitNode, visitArray);
                      return true;
                    }
                  }
                }
              }
            }
            return false;
          }
        }
      }
    })(IncrementalParser || (IncrementalParser = {}));
  })(ts || (ts = {}));
  var ts;
  (function(ts) {
    ts.bindTime = 0;
    function or(state1, state2) {
      return (state1 | state2) & 2 ? 2 : (state1 & state2) & 8 ? 8 : 4;
    }
    function getModuleInstanceState(node) {
      if (node.kind === 218 || node.kind === 219) {
        return 0;
      } else if (ts.isConstEnumDeclaration(node)) {
        return 2;
      } else if ((node.kind === 225 || node.kind === 224) && !(node.flags & 2)) {
        return 0;
      } else if (node.kind === 222) {
        var state_1 = 0;
        ts.forEachChild(node, function(n) {
          switch (getModuleInstanceState(n)) {
            case 0:
              return false;
            case 2:
              state_1 = 2;
              return false;
            case 1:
              state_1 = 1;
              return true;
          }
        });
        return state_1;
      } else if (node.kind === 221) {
        return getModuleInstanceState(node.body);
      } else {
        return 1;
      }
    }
    ts.getModuleInstanceState = getModuleInstanceState;
    var binder = createBinder();
    function bindSourceFile(file, options) {
      var start = new Date().getTime();
      binder(file, options);
      ts.bindTime += new Date().getTime() - start;
    }
    ts.bindSourceFile = bindSourceFile;
    function createBinder() {
      var file;
      var options;
      var parent;
      var container;
      var blockScopeContainer;
      var lastContainer;
      var seenThisKeyword;
      var hasExplicitReturn;
      var currentReachabilityState;
      var labelStack;
      var labelIndexMap;
      var implicitLabels;
      var hasClassExtends;
      var hasAsyncFunctions;
      var hasDecorators;
      var hasParameterDecorators;
      var hasJsxSpreadAttribute;
      var inStrictMode;
      var symbolCount = 0;
      var Symbol;
      var classifiableNames;
      function bindSourceFile(f, opts) {
        file = f;
        options = opts;
        inStrictMode = !!file.externalModuleIndicator;
        classifiableNames = {};
        Symbol = ts.objectAllocator.getSymbolConstructor();
        if (!file.locals) {
          bind(file);
          file.symbolCount = symbolCount;
          file.classifiableNames = classifiableNames;
        }
        file = undefined;
        options = undefined;
        parent = undefined;
        container = undefined;
        blockScopeContainer = undefined;
        lastContainer = undefined;
        seenThisKeyword = false;
        hasExplicitReturn = false;
        labelStack = undefined;
        labelIndexMap = undefined;
        implicitLabels = undefined;
        hasClassExtends = false;
        hasAsyncFunctions = false;
        hasDecorators = false;
        hasParameterDecorators = false;
        hasJsxSpreadAttribute = false;
      }
      return bindSourceFile;
      function createSymbol(flags, name) {
        symbolCount++;
        return new Symbol(flags, name);
      }
      function addDeclarationToSymbol(symbol, node, symbolFlags) {
        symbol.flags |= symbolFlags;
        node.symbol = symbol;
        if (!symbol.declarations) {
          symbol.declarations = [];
        }
        symbol.declarations.push(node);
        if (symbolFlags & 1952 && !symbol.exports) {
          symbol.exports = {};
        }
        if (symbolFlags & 6240 && !symbol.members) {
          symbol.members = {};
        }
        if (symbolFlags & 107455) {
          var valueDeclaration = symbol.valueDeclaration;
          if (!valueDeclaration || (valueDeclaration.kind !== node.kind && valueDeclaration.kind === 221)) {
            symbol.valueDeclaration = node;
          }
        }
      }
      function getDeclarationName(node) {
        if (node.name) {
          if (ts.isAmbientModule(node)) {
            return ts.isGlobalScopeAugmentation(node) ? "__global" : "\"" + node.name.text + "\"";
          }
          if (node.name.kind === 137) {
            var nameExpression = node.name.expression;
            if (ts.isStringOrNumericLiteral(nameExpression.kind)) {
              return nameExpression.text;
            }
            ts.Debug.assert(ts.isWellKnownSymbolSyntactically(nameExpression));
            return ts.getPropertyNameForKnownSymbolName(nameExpression.name.text);
          }
          return node.name.text;
        }
        switch (node.kind) {
          case 145:
            return "__constructor";
          case 153:
          case 148:
            return "__call";
          case 154:
          case 149:
            return "__new";
          case 150:
            return "__index";
          case 231:
            return "__export";
          case 230:
            return node.isExportEquals ? "export=" : "default";
          case 184:
            switch (ts.getSpecialPropertyAssignmentKind(node)) {
              case 2:
                return "export=";
              case 1:
              case 4:
                return node.left.name.text;
              case 3:
                return node.left.expression.name.text;
            }
            ts.Debug.fail("Unknown binary declaration kind");
            break;
          case 216:
          case 217:
            return node.flags & 512 ? "default" : undefined;
          case 264:
            return ts.isJSDocConstructSignature(node) ? "__new" : "__call";
          case 139:
            ts.Debug.assert(node.parent.kind === 264);
            var functionType = node.parent;
            var index = ts.indexOf(functionType.parameters, node);
            return "p" + index;
        }
      }
      function getDisplayName(node) {
        return node.name ? ts.declarationNameToString(node.name) : getDeclarationName(node);
      }
      function declareSymbol(symbolTable, parent, node, includes, excludes) {
        ts.Debug.assert(!ts.hasDynamicName(node));
        var isDefaultExport = node.flags & 512;
        var name = isDefaultExport && parent ? "default" : getDeclarationName(node);
        var symbol;
        if (name !== undefined) {
          symbol = ts.hasProperty(symbolTable, name) ? symbolTable[name] : (symbolTable[name] = createSymbol(0, name));
          if (name && (includes & 788448)) {
            classifiableNames[name] = name;
          }
          if (symbol.flags & excludes) {
            if (node.name) {
              node.name.parent = node;
            }
            var message_1 = symbol.flags & 2 ? ts.Diagnostics.Cannot_redeclare_block_scoped_variable_0 : ts.Diagnostics.Duplicate_identifier_0;
            ts.forEach(symbol.declarations, function(declaration) {
              if (declaration.flags & 512) {
                message_1 = ts.Diagnostics.A_module_cannot_have_multiple_default_exports;
              }
            });
            ts.forEach(symbol.declarations, function(declaration) {
              file.bindDiagnostics.push(ts.createDiagnosticForNode(declaration.name || declaration, message_1, getDisplayName(declaration)));
            });
            file.bindDiagnostics.push(ts.createDiagnosticForNode(node.name || node, message_1, getDisplayName(node)));
            symbol = createSymbol(0, name);
          }
        } else {
          symbol = createSymbol(0, "__missing");
        }
        addDeclarationToSymbol(symbol, node, includes);
        symbol.parent = parent;
        return symbol;
      }
      function declareModuleMember(node, symbolFlags, symbolExcludes) {
        var hasExportModifier = ts.getCombinedNodeFlags(node) & 2;
        if (symbolFlags & 8388608) {
          if (node.kind === 233 || (node.kind === 224 && hasExportModifier)) {
            return declareSymbol(container.symbol.exports, container.symbol, node, symbolFlags, symbolExcludes);
          } else {
            return declareSymbol(container.locals, undefined, node, symbolFlags, symbolExcludes);
          }
        } else {
          if (!ts.isAmbientModule(node) && (hasExportModifier || container.flags & 131072)) {
            var exportKind = (symbolFlags & 107455 ? 1048576 : 0) | (symbolFlags & 793056 ? 2097152 : 0) | (symbolFlags & 1536 ? 4194304 : 0);
            var local = declareSymbol(container.locals, undefined, node, exportKind, symbolExcludes);
            local.exportSymbol = declareSymbol(container.symbol.exports, container.symbol, node, symbolFlags, symbolExcludes);
            node.localSymbol = local;
            return local;
          } else {
            return declareSymbol(container.locals, undefined, node, symbolFlags, symbolExcludes);
          }
        }
      }
      function bindChildren(node) {
        var saveParent = parent;
        var saveContainer = container;
        var savedBlockScopeContainer = blockScopeContainer;
        parent = node;
        var containerFlags = getContainerFlags(node);
        if (containerFlags & 1) {
          container = blockScopeContainer = node;
          if (containerFlags & 4) {
            container.locals = {};
          }
          addToContainerChain(container);
        } else if (containerFlags & 2) {
          blockScopeContainer = node;
          blockScopeContainer.locals = undefined;
        }
        var savedReachabilityState;
        var savedLabelStack;
        var savedLabels;
        var savedImplicitLabels;
        var savedHasExplicitReturn;
        var kind = node.kind;
        var flags = node.flags;
        flags &= ~1572864;
        flags &= ~62914560;
        if (kind === 218) {
          seenThisKeyword = false;
        }
        var saveState = kind === 251 || kind === 222 || ts.isFunctionLikeKind(kind);
        if (saveState) {
          savedReachabilityState = currentReachabilityState;
          savedLabelStack = labelStack;
          savedLabels = labelIndexMap;
          savedImplicitLabels = implicitLabels;
          savedHasExplicitReturn = hasExplicitReturn;
          currentReachabilityState = 2;
          hasExplicitReturn = false;
          labelStack = labelIndexMap = implicitLabels = undefined;
        }
        if (ts.isInJavaScriptFile(node) && node.jsDocComment) {
          bind(node.jsDocComment);
        }
        bindReachableStatement(node);
        if (currentReachabilityState === 2 && ts.isFunctionLikeKind(kind) && ts.nodeIsPresent(node.body)) {
          flags |= 524288;
          if (hasExplicitReturn) {
            flags |= 1048576;
          }
        }
        if (kind === 218) {
          flags = seenThisKeyword ? flags | 262144 : flags & ~262144;
        }
        if (kind === 251) {
          if (hasClassExtends) {
            flags |= 4194304;
          }
          if (hasDecorators) {
            flags |= 8388608;
          }
          if (hasParameterDecorators) {
            flags |= 16777216;
          }
          if (hasAsyncFunctions) {
            flags |= 33554432;
          }
          if (hasJsxSpreadAttribute) {
            flags |= 1073741824;
          }
        }
        node.flags = flags;
        if (saveState) {
          hasExplicitReturn = savedHasExplicitReturn;
          currentReachabilityState = savedReachabilityState;
          labelStack = savedLabelStack;
          labelIndexMap = savedLabels;
          implicitLabels = savedImplicitLabels;
        }
        container = saveContainer;
        parent = saveParent;
        blockScopeContainer = savedBlockScopeContainer;
      }
      function bindReachableStatement(node) {
        if (checkUnreachable(node)) {
          ts.forEachChild(node, bind);
          return;
        }
        switch (node.kind) {
          case 201:
            bindWhileStatement(node);
            break;
          case 200:
            bindDoStatement(node);
            break;
          case 202:
            bindForStatement(node);
            break;
          case 203:
          case 204:
            bindForInOrForOfStatement(node);
            break;
          case 199:
            bindIfStatement(node);
            break;
          case 207:
          case 211:
            bindReturnOrThrow(node);
            break;
          case 206:
          case 205:
            bindBreakOrContinueStatement(node);
            break;
          case 212:
            bindTryStatement(node);
            break;
          case 209:
            bindSwitchStatement(node);
            break;
          case 223:
            bindCaseBlock(node);
            break;
          case 210:
            bindLabeledStatement(node);
            break;
          default:
            ts.forEachChild(node, bind);
            break;
        }
      }
      function bindWhileStatement(n) {
        var preWhileState = n.expression.kind === 84 ? 4 : currentReachabilityState;
        var postWhileState = n.expression.kind === 99 ? 4 : currentReachabilityState;
        bind(n.expression);
        currentReachabilityState = preWhileState;
        var postWhileLabel = pushImplicitLabel();
        bind(n.statement);
        popImplicitLabel(postWhileLabel, postWhileState);
      }
      function bindDoStatement(n) {
        var preDoState = currentReachabilityState;
        var postDoLabel = pushImplicitLabel();
        bind(n.statement);
        var postDoState = n.expression.kind === 99 ? 4 : preDoState;
        popImplicitLabel(postDoLabel, postDoState);
        bind(n.expression);
      }
      function bindForStatement(n) {
        var preForState = currentReachabilityState;
        var postForLabel = pushImplicitLabel();
        bind(n.initializer);
        bind(n.condition);
        bind(n.incrementor);
        bind(n.statement);
        var isInfiniteLoop = (!n.condition || n.condition.kind === 99);
        var postForState = isInfiniteLoop ? 4 : preForState;
        popImplicitLabel(postForLabel, postForState);
      }
      function bindForInOrForOfStatement(n) {
        var preStatementState = currentReachabilityState;
        var postStatementLabel = pushImplicitLabel();
        bind(n.initializer);
        bind(n.expression);
        bind(n.statement);
        popImplicitLabel(postStatementLabel, preStatementState);
      }
      function bindIfStatement(n) {
        var ifTrueState = n.expression.kind === 84 ? 4 : currentReachabilityState;
        var ifFalseState = n.expression.kind === 99 ? 4 : currentReachabilityState;
        currentReachabilityState = ifTrueState;
        bind(n.expression);
        bind(n.thenStatement);
        if (n.elseStatement) {
          var preElseState = currentReachabilityState;
          currentReachabilityState = ifFalseState;
          bind(n.elseStatement);
          currentReachabilityState = or(currentReachabilityState, preElseState);
        } else {
          currentReachabilityState = or(currentReachabilityState, ifFalseState);
        }
      }
      function bindReturnOrThrow(n) {
        bind(n.expression);
        if (n.kind === 207) {
          hasExplicitReturn = true;
        }
        currentReachabilityState = 4;
      }
      function bindBreakOrContinueStatement(n) {
        bind(n.label);
        var isValidJump = jumpToLabel(n.label, n.kind === 206 ? currentReachabilityState : 4);
        if (isValidJump) {
          currentReachabilityState = 4;
        }
      }
      function bindTryStatement(n) {
        var preTryState = currentReachabilityState;
        bind(n.tryBlock);
        var postTryState = currentReachabilityState;
        currentReachabilityState = preTryState;
        bind(n.catchClause);
        var postCatchState = currentReachabilityState;
        currentReachabilityState = preTryState;
        bind(n.finallyBlock);
        currentReachabilityState = or(postTryState, postCatchState);
      }
      function bindSwitchStatement(n) {
        var preSwitchState = currentReachabilityState;
        var postSwitchLabel = pushImplicitLabel();
        bind(n.expression);
        bind(n.caseBlock);
        var hasDefault = ts.forEach(n.caseBlock.clauses, function(c) {
          return c.kind === 245;
        });
        var postSwitchState = hasDefault && currentReachabilityState !== 2 ? 4 : preSwitchState;
        popImplicitLabel(postSwitchLabel, postSwitchState);
      }
      function bindCaseBlock(n) {
        var startState = currentReachabilityState;
        for (var _i = 0,
            _a = n.clauses; _i < _a.length; _i++) {
          var clause = _a[_i];
          currentReachabilityState = startState;
          bind(clause);
          if (clause.statements.length && currentReachabilityState === 2 && options.noFallthroughCasesInSwitch) {
            errorOnFirstToken(clause, ts.Diagnostics.Fallthrough_case_in_switch);
          }
        }
      }
      function bindLabeledStatement(n) {
        bind(n.label);
        var ok = pushNamedLabel(n.label);
        bind(n.statement);
        if (ok) {
          popNamedLabel(n.label, currentReachabilityState);
        }
      }
      function getContainerFlags(node) {
        switch (node.kind) {
          case 189:
          case 217:
          case 218:
          case 220:
          case 168:
          case 156:
          case 260:
            return 1;
          case 148:
          case 149:
          case 150:
          case 144:
          case 143:
          case 216:
          case 145:
          case 146:
          case 147:
          case 153:
          case 264:
          case 154:
          case 176:
          case 177:
          case 221:
          case 251:
          case 219:
            return 5;
          case 247:
          case 202:
          case 203:
          case 204:
          case 223:
            return 2;
          case 195:
            return ts.isFunctionLike(node.parent) ? 0 : 2;
        }
        return 0;
      }
      function addToContainerChain(next) {
        if (lastContainer) {
          lastContainer.nextContainer = next;
        }
        lastContainer = next;
      }
      function declareSymbolAndAddToSymbolTable(node, symbolFlags, symbolExcludes) {
        declareSymbolAndAddToSymbolTableWorker(node, symbolFlags, symbolExcludes);
      }
      function declareSymbolAndAddToSymbolTableWorker(node, symbolFlags, symbolExcludes) {
        switch (container.kind) {
          case 221:
            return declareModuleMember(node, symbolFlags, symbolExcludes);
          case 251:
            return declareSourceFileMember(node, symbolFlags, symbolExcludes);
          case 189:
          case 217:
            return declareClassMember(node, symbolFlags, symbolExcludes);
          case 220:
            return declareSymbol(container.symbol.exports, container.symbol, node, symbolFlags, symbolExcludes);
          case 156:
          case 168:
          case 218:
          case 260:
            return declareSymbol(container.symbol.members, container.symbol, node, symbolFlags, symbolExcludes);
          case 153:
          case 154:
          case 148:
          case 149:
          case 150:
          case 144:
          case 143:
          case 145:
          case 146:
          case 147:
          case 216:
          case 176:
          case 177:
          case 264:
          case 219:
            return declareSymbol(container.locals, undefined, node, symbolFlags, symbolExcludes);
        }
      }
      function declareClassMember(node, symbolFlags, symbolExcludes) {
        return node.flags & 64 ? declareSymbol(container.symbol.exports, container.symbol, node, symbolFlags, symbolExcludes) : declareSymbol(container.symbol.members, container.symbol, node, symbolFlags, symbolExcludes);
      }
      function declareSourceFileMember(node, symbolFlags, symbolExcludes) {
        return ts.isExternalModule(file) ? declareModuleMember(node, symbolFlags, symbolExcludes) : declareSymbol(file.locals, undefined, node, symbolFlags, symbolExcludes);
      }
      function hasExportDeclarations(node) {
        var body = node.kind === 251 ? node : node.body;
        if (body.kind === 251 || body.kind === 222) {
          for (var _i = 0,
              _a = body.statements; _i < _a.length; _i++) {
            var stat = _a[_i];
            if (stat.kind === 231 || stat.kind === 230) {
              return true;
            }
          }
        }
        return false;
      }
      function setExportContextFlag(node) {
        if (ts.isInAmbientContext(node) && !hasExportDeclarations(node)) {
          node.flags |= 131072;
        } else {
          node.flags &= ~131072;
        }
      }
      function bindModuleDeclaration(node) {
        setExportContextFlag(node);
        if (ts.isAmbientModule(node)) {
          if (node.flags & 2) {
            errorOnFirstToken(node, ts.Diagnostics.export_modifier_cannot_be_applied_to_ambient_modules_and_module_augmentations_since_they_are_always_visible);
          }
          declareSymbolAndAddToSymbolTable(node, 512, 106639);
        } else {
          var state = getModuleInstanceState(node);
          if (state === 0) {
            declareSymbolAndAddToSymbolTable(node, 1024, 0);
          } else {
            declareSymbolAndAddToSymbolTable(node, 512, 106639);
            if (node.symbol.flags & (16 | 32 | 256)) {
              node.symbol.constEnumOnlyModule = false;
            } else {
              var currentModuleIsConstEnumOnly = state === 2;
              if (node.symbol.constEnumOnlyModule === undefined) {
                node.symbol.constEnumOnlyModule = currentModuleIsConstEnumOnly;
              } else {
                node.symbol.constEnumOnlyModule = node.symbol.constEnumOnlyModule && currentModuleIsConstEnumOnly;
              }
            }
          }
        }
      }
      function bindFunctionOrConstructorType(node) {
        var symbol = createSymbol(131072, getDeclarationName(node));
        addDeclarationToSymbol(symbol, node, 131072);
        var typeLiteralSymbol = createSymbol(2048, "__type");
        addDeclarationToSymbol(typeLiteralSymbol, node, 2048);
        typeLiteralSymbol.members = (_a = {}, _a[symbol.name] = symbol, _a);
        var _a;
      }
      function bindObjectLiteralExpression(node) {
        if (inStrictMode) {
          var seen = {};
          for (var _i = 0,
              _a = node.properties; _i < _a.length; _i++) {
            var prop = _a[_i];
            if (prop.name.kind !== 69) {
              continue;
            }
            var identifier = prop.name;
            var currentKind = prop.kind === 248 || prop.kind === 249 || prop.kind === 144 ? 1 : 2;
            var existingKind = seen[identifier.text];
            if (!existingKind) {
              seen[identifier.text] = currentKind;
              continue;
            }
            if (currentKind === 1 && existingKind === 1) {
              var span = ts.getErrorSpanForNode(file, identifier);
              file.bindDiagnostics.push(ts.createFileDiagnostic(file, span.start, span.length, ts.Diagnostics.An_object_literal_cannot_have_multiple_properties_with_the_same_name_in_strict_mode));
            }
          }
        }
        return bindAnonymousDeclaration(node, 4096, "__object");
      }
      function bindAnonymousDeclaration(node, symbolFlags, name) {
        var symbol = createSymbol(symbolFlags, name);
        addDeclarationToSymbol(symbol, node, symbolFlags);
      }
      function bindBlockScopedDeclaration(node, symbolFlags, symbolExcludes) {
        switch (blockScopeContainer.kind) {
          case 221:
            declareModuleMember(node, symbolFlags, symbolExcludes);
            break;
          case 251:
            if (ts.isExternalModule(container)) {
              declareModuleMember(node, symbolFlags, symbolExcludes);
              break;
            }
          default:
            if (!blockScopeContainer.locals) {
              blockScopeContainer.locals = {};
              addToContainerChain(blockScopeContainer);
            }
            declareSymbol(blockScopeContainer.locals, undefined, node, symbolFlags, symbolExcludes);
        }
      }
      function bindBlockScopedVariableDeclaration(node) {
        bindBlockScopedDeclaration(node, 2, 107455);
      }
      function checkStrictModeIdentifier(node) {
        if (inStrictMode && node.originalKeywordKind >= 106 && node.originalKeywordKind <= 114 && !ts.isIdentifierName(node)) {
          if (!file.parseDiagnostics.length) {
            file.bindDiagnostics.push(ts.createDiagnosticForNode(node, getStrictModeIdentifierMessage(node), ts.declarationNameToString(node)));
          }
        }
      }
      function getStrictModeIdentifierMessage(node) {
        if (ts.getContainingClass(node)) {
          return ts.Diagnostics.Identifier_expected_0_is_a_reserved_word_in_strict_mode_Class_definitions_are_automatically_in_strict_mode;
        }
        if (file.externalModuleIndicator) {
          return ts.Diagnostics.Identifier_expected_0_is_a_reserved_word_in_strict_mode_Modules_are_automatically_in_strict_mode;
        }
        return ts.Diagnostics.Identifier_expected_0_is_a_reserved_word_in_strict_mode;
      }
      function checkStrictModeBinaryExpression(node) {
        if (inStrictMode && ts.isLeftHandSideExpression(node.left) && ts.isAssignmentOperator(node.operatorToken.kind)) {
          checkStrictModeEvalOrArguments(node, node.left);
        }
      }
      function checkStrictModeCatchClause(node) {
        if (inStrictMode && node.variableDeclaration) {
          checkStrictModeEvalOrArguments(node, node.variableDeclaration.name);
        }
      }
      function checkStrictModeDeleteExpression(node) {
        if (inStrictMode && node.expression.kind === 69) {
          var span = ts.getErrorSpanForNode(file, node.expression);
          file.bindDiagnostics.push(ts.createFileDiagnostic(file, span.start, span.length, ts.Diagnostics.delete_cannot_be_called_on_an_identifier_in_strict_mode));
        }
      }
      function isEvalOrArgumentsIdentifier(node) {
        return node.kind === 69 && (node.text === "eval" || node.text === "arguments");
      }
      function checkStrictModeEvalOrArguments(contextNode, name) {
        if (name && name.kind === 69) {
          var identifier = name;
          if (isEvalOrArgumentsIdentifier(identifier)) {
            var span = ts.getErrorSpanForNode(file, name);
            file.bindDiagnostics.push(ts.createFileDiagnostic(file, span.start, span.length, getStrictModeEvalOrArgumentsMessage(contextNode), identifier.text));
          }
        }
      }
      function getStrictModeEvalOrArgumentsMessage(node) {
        if (ts.getContainingClass(node)) {
          return ts.Diagnostics.Invalid_use_of_0_Class_definitions_are_automatically_in_strict_mode;
        }
        if (file.externalModuleIndicator) {
          return ts.Diagnostics.Invalid_use_of_0_Modules_are_automatically_in_strict_mode;
        }
        return ts.Diagnostics.Invalid_use_of_0_in_strict_mode;
      }
      function checkStrictModeFunctionName(node) {
        if (inStrictMode) {
          checkStrictModeEvalOrArguments(node, node.name);
        }
      }
      function checkStrictModeNumericLiteral(node) {
        if (inStrictMode && node.flags & 32768) {
          file.bindDiagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.Octal_literals_are_not_allowed_in_strict_mode));
        }
      }
      function checkStrictModePostfixUnaryExpression(node) {
        if (inStrictMode) {
          checkStrictModeEvalOrArguments(node, node.operand);
        }
      }
      function checkStrictModePrefixUnaryExpression(node) {
        if (inStrictMode) {
          if (node.operator === 41 || node.operator === 42) {
            checkStrictModeEvalOrArguments(node, node.operand);
          }
        }
      }
      function checkStrictModeWithStatement(node) {
        if (inStrictMode) {
          errorOnFirstToken(node, ts.Diagnostics.with_statements_are_not_allowed_in_strict_mode);
        }
      }
      function errorOnFirstToken(node, message, arg0, arg1, arg2) {
        var span = ts.getSpanOfTokenAtPosition(file, node.pos);
        file.bindDiagnostics.push(ts.createFileDiagnostic(file, span.start, span.length, message, arg0, arg1, arg2));
      }
      function getDestructuringParameterName(node) {
        return "__" + ts.indexOf(node.parent.parameters, node);
      }
      function bind(node) {
        if (!node) {
          return;
        }
        node.parent = parent;
        var savedInStrictMode = inStrictMode;
        if (!savedInStrictMode) {
          updateStrictMode(node);
        }
        bindWorker(node);
        bindChildren(node);
        inStrictMode = savedInStrictMode;
      }
      function updateStrictMode(node) {
        switch (node.kind) {
          case 251:
          case 222:
            updateStrictModeStatementList(node.statements);
            return;
          case 195:
            if (ts.isFunctionLike(node.parent)) {
              updateStrictModeStatementList(node.statements);
            }
            return;
          case 217:
          case 189:
            inStrictMode = true;
            return;
        }
      }
      function updateStrictModeStatementList(statements) {
        for (var _i = 0,
            statements_1 = statements; _i < statements_1.length; _i++) {
          var statement = statements_1[_i];
          if (!ts.isPrologueDirective(statement)) {
            return;
          }
          if (isUseStrictPrologueDirective(statement)) {
            inStrictMode = true;
            return;
          }
        }
      }
      function isUseStrictPrologueDirective(node) {
        var nodeText = ts.getTextOfNodeFromSourceText(file.text, node.expression);
        return nodeText === "\"use strict\"" || nodeText === "'use strict'";
      }
      function bindWorker(node) {
        switch (node.kind) {
          case 69:
            return checkStrictModeIdentifier(node);
          case 184:
            if (ts.isInJavaScriptFile(node)) {
              var specialKind = ts.getSpecialPropertyAssignmentKind(node);
              switch (specialKind) {
                case 1:
                  bindExportsPropertyAssignment(node);
                  break;
                case 2:
                  bindModuleExportsAssignment(node);
                  break;
                case 3:
                  bindPrototypePropertyAssignment(node);
                  break;
                case 4:
                  bindThisPropertyAssignment(node);
                  break;
                case 0:
                  break;
                default:
                  ts.Debug.fail("Unknown special property assignment kind");
              }
            }
            return checkStrictModeBinaryExpression(node);
          case 247:
            return checkStrictModeCatchClause(node);
          case 178:
            return checkStrictModeDeleteExpression(node);
          case 8:
            return checkStrictModeNumericLiteral(node);
          case 183:
            return checkStrictModePostfixUnaryExpression(node);
          case 182:
            return checkStrictModePrefixUnaryExpression(node);
          case 208:
            return checkStrictModeWithStatement(node);
          case 162:
            seenThisKeyword = true;
            return;
          case 151:
            return checkTypePredicate(node);
          case 138:
            return declareSymbolAndAddToSymbolTable(node, 262144, 530912);
          case 139:
            return bindParameter(node);
          case 214:
          case 166:
            return bindVariableDeclarationOrBindingElement(node);
          case 142:
          case 141:
          case 261:
            return bindPropertyOrMethodOrAccessor(node, 4 | (node.questionToken ? 536870912 : 0), 107455);
          case 248:
          case 249:
            return bindPropertyOrMethodOrAccessor(node, 4, 107455);
          case 250:
            return bindPropertyOrMethodOrAccessor(node, 8, 107455);
          case 242:
            hasJsxSpreadAttribute = true;
            return;
          case 148:
          case 149:
          case 150:
            return declareSymbolAndAddToSymbolTable(node, 131072, 0);
          case 144:
          case 143:
            return bindPropertyOrMethodOrAccessor(node, 8192 | (node.questionToken ? 536870912 : 0), ts.isObjectLiteralMethod(node) ? 107455 : 99263);
          case 216:
            return bindFunctionDeclaration(node);
          case 145:
            return declareSymbolAndAddToSymbolTable(node, 16384, 0);
          case 146:
            return bindPropertyOrMethodOrAccessor(node, 32768, 41919);
          case 147:
            return bindPropertyOrMethodOrAccessor(node, 65536, 74687);
          case 153:
          case 154:
          case 264:
            return bindFunctionOrConstructorType(node);
          case 156:
          case 260:
            return bindAnonymousDeclaration(node, 2048, "__type");
          case 168:
            return bindObjectLiteralExpression(node);
          case 176:
          case 177:
            return bindFunctionExpression(node);
          case 171:
            if (ts.isInJavaScriptFile(node)) {
              bindCallExpression(node);
            }
            break;
          case 189:
          case 217:
            return bindClassLikeDeclaration(node);
          case 218:
            return bindBlockScopedDeclaration(node, 64, 792960);
          case 219:
            return bindBlockScopedDeclaration(node, 524288, 793056);
          case 220:
            return bindEnumDeclaration(node);
          case 221:
            return bindModuleDeclaration(node);
          case 224:
          case 227:
          case 229:
          case 233:
            return declareSymbolAndAddToSymbolTable(node, 8388608, 8388608);
          case 226:
            return bindImportClause(node);
          case 231:
            return bindExportDeclaration(node);
          case 230:
            return bindExportAssignment(node);
          case 251:
            return bindSourceFileIfExternalModule();
        }
      }
      function checkTypePredicate(node) {
        var parameterName = node.parameterName,
            type = node.type;
        if (parameterName && parameterName.kind === 69) {
          checkStrictModeIdentifier(parameterName);
        }
        if (parameterName && parameterName.kind === 162) {
          seenThisKeyword = true;
        }
        bind(type);
      }
      function bindSourceFileIfExternalModule() {
        setExportContextFlag(file);
        if (ts.isExternalModule(file)) {
          bindSourceFileAsExternalModule();
        }
      }
      function bindSourceFileAsExternalModule() {
        bindAnonymousDeclaration(file, 512, "\"" + ts.removeFileExtension(file.fileName) + "\"");
      }
      function bindExportAssignment(node) {
        var boundExpression = node.kind === 230 ? node.expression : node.right;
        if (!container.symbol || !container.symbol.exports) {
          bindAnonymousDeclaration(node, 8388608, getDeclarationName(node));
        } else if (boundExpression.kind === 69 && node.kind === 230) {
          declareSymbol(container.symbol.exports, container.symbol, node, 8388608, 107455 | 8388608);
        } else {
          declareSymbol(container.symbol.exports, container.symbol, node, 4, 107455 | 8388608);
        }
      }
      function bindExportDeclaration(node) {
        if (!container.symbol || !container.symbol.exports) {
          bindAnonymousDeclaration(node, 1073741824, getDeclarationName(node));
        } else if (!node.exportClause) {
          declareSymbol(container.symbol.exports, container.symbol, node, 1073741824, 0);
        }
      }
      function bindImportClause(node) {
        if (node.name) {
          declareSymbolAndAddToSymbolTable(node, 8388608, 8388608);
        }
      }
      function setCommonJsModuleIndicator(node) {
        if (!file.commonJsModuleIndicator) {
          file.commonJsModuleIndicator = node;
          bindSourceFileAsExternalModule();
        }
      }
      function bindExportsPropertyAssignment(node) {
        setCommonJsModuleIndicator(node);
        declareSymbol(file.symbol.exports, file.symbol, node.left, 4 | 7340032, 0);
      }
      function bindModuleExportsAssignment(node) {
        setCommonJsModuleIndicator(node);
        declareSymbol(file.symbol.exports, file.symbol, node, 4 | 7340032 | 512, 0);
      }
      function bindThisPropertyAssignment(node) {
        if (container.kind === 176 || container.kind === 216) {
          container.symbol.members = container.symbol.members || {};
          declareSymbol(container.symbol.members, container.symbol, node, 4, 107455 & ~4);
        }
      }
      function bindPrototypePropertyAssignment(node) {
        var leftSideOfAssignment = node.left;
        var classPrototype = leftSideOfAssignment.expression;
        var constructorFunction = classPrototype.expression;
        leftSideOfAssignment.parent = node;
        constructorFunction.parent = classPrototype;
        classPrototype.parent = leftSideOfAssignment;
        var funcSymbol = container.locals[constructorFunction.text];
        if (!funcSymbol || !(funcSymbol.flags & 16)) {
          return;
        }
        if (!funcSymbol.members) {
          funcSymbol.members = {};
        }
        declareSymbol(funcSymbol.members, funcSymbol, leftSideOfAssignment, 4, 107455 & ~4);
      }
      function bindCallExpression(node) {
        if (!file.commonJsModuleIndicator && ts.isRequireCall(node, false)) {
          setCommonJsModuleIndicator(node);
        }
      }
      function bindClassLikeDeclaration(node) {
        if (!ts.isDeclarationFile(file) && !ts.isInAmbientContext(node)) {
          if (ts.getClassExtendsHeritageClauseElement(node) !== undefined) {
            hasClassExtends = true;
          }
          if (ts.nodeIsDecorated(node)) {
            hasDecorators = true;
          }
        }
        if (node.kind === 217) {
          bindBlockScopedDeclaration(node, 32, 899519);
        } else {
          var bindingName = node.name ? node.name.text : "__class";
          bindAnonymousDeclaration(node, 32, bindingName);
          if (node.name) {
            classifiableNames[node.name.text] = node.name.text;
          }
        }
        var symbol = node.symbol;
        var prototypeSymbol = createSymbol(4 | 134217728, "prototype");
        if (ts.hasProperty(symbol.exports, prototypeSymbol.name)) {
          if (node.name) {
            node.name.parent = node;
          }
          file.bindDiagnostics.push(ts.createDiagnosticForNode(symbol.exports[prototypeSymbol.name].declarations[0], ts.Diagnostics.Duplicate_identifier_0, prototypeSymbol.name));
        }
        symbol.exports[prototypeSymbol.name] = prototypeSymbol;
        prototypeSymbol.parent = symbol;
      }
      function bindEnumDeclaration(node) {
        return ts.isConst(node) ? bindBlockScopedDeclaration(node, 128, 899967) : bindBlockScopedDeclaration(node, 256, 899327);
      }
      function bindVariableDeclarationOrBindingElement(node) {
        if (inStrictMode) {
          checkStrictModeEvalOrArguments(node, node.name);
        }
        if (!ts.isBindingPattern(node.name)) {
          if (ts.isBlockOrCatchScoped(node)) {
            bindBlockScopedVariableDeclaration(node);
          } else if (ts.isParameterDeclaration(node)) {
            declareSymbolAndAddToSymbolTable(node, 1, 107455);
          } else {
            declareSymbolAndAddToSymbolTable(node, 1, 107454);
          }
        }
      }
      function bindParameter(node) {
        if (!ts.isDeclarationFile(file) && !ts.isInAmbientContext(node) && ts.nodeIsDecorated(node)) {
          hasDecorators = true;
          hasParameterDecorators = true;
        }
        if (inStrictMode) {
          checkStrictModeEvalOrArguments(node, node.name);
        }
        if (ts.isBindingPattern(node.name)) {
          bindAnonymousDeclaration(node, 1, getDestructuringParameterName(node));
        } else {
          declareSymbolAndAddToSymbolTable(node, 1, 107455);
        }
        if (ts.isParameterPropertyDeclaration(node)) {
          var classDeclaration = node.parent.parent;
          declareSymbol(classDeclaration.symbol.members, classDeclaration.symbol, node, 4, 107455);
        }
      }
      function bindFunctionDeclaration(node) {
        if (!ts.isDeclarationFile(file) && !ts.isInAmbientContext(node)) {
          if (ts.isAsyncFunctionLike(node)) {
            hasAsyncFunctions = true;
          }
        }
        checkStrictModeFunctionName(node);
        return declareSymbolAndAddToSymbolTable(node, 16, 106927);
      }
      function bindFunctionExpression(node) {
        if (!ts.isDeclarationFile(file) && !ts.isInAmbientContext(node)) {
          if (ts.isAsyncFunctionLike(node)) {
            hasAsyncFunctions = true;
          }
        }
        checkStrictModeFunctionName(node);
        var bindingName = node.name ? node.name.text : "__function";
        return bindAnonymousDeclaration(node, 16, bindingName);
      }
      function bindPropertyOrMethodOrAccessor(node, symbolFlags, symbolExcludes) {
        if (!ts.isDeclarationFile(file) && !ts.isInAmbientContext(node)) {
          if (ts.isAsyncFunctionLike(node)) {
            hasAsyncFunctions = true;
          }
          if (ts.nodeIsDecorated(node)) {
            hasDecorators = true;
          }
        }
        return ts.hasDynamicName(node) ? bindAnonymousDeclaration(node, symbolFlags, "__computed") : declareSymbolAndAddToSymbolTable(node, symbolFlags, symbolExcludes);
      }
      function pushNamedLabel(name) {
        initializeReachabilityStateIfNecessary();
        if (ts.hasProperty(labelIndexMap, name.text)) {
          return false;
        }
        labelIndexMap[name.text] = labelStack.push(1) - 1;
        return true;
      }
      function pushImplicitLabel() {
        initializeReachabilityStateIfNecessary();
        var index = labelStack.push(1) - 1;
        implicitLabels.push(index);
        return index;
      }
      function popNamedLabel(label, outerState) {
        var index = labelIndexMap[label.text];
        ts.Debug.assert(index !== undefined);
        ts.Debug.assert(labelStack.length == index + 1);
        labelIndexMap[label.text] = undefined;
        setCurrentStateAtLabel(labelStack.pop(), outerState, label);
      }
      function popImplicitLabel(implicitLabelIndex, outerState) {
        if (labelStack.length !== implicitLabelIndex + 1) {
          ts.Debug.assert(false, "Label stack: " + labelStack.length + ", index:" + implicitLabelIndex);
        }
        var i = implicitLabels.pop();
        if (implicitLabelIndex !== i) {
          ts.Debug.assert(false, "i: " + i + ", index: " + implicitLabelIndex);
        }
        setCurrentStateAtLabel(labelStack.pop(), outerState, undefined);
      }
      function setCurrentStateAtLabel(innerMergedState, outerState, label) {
        if (innerMergedState === 1) {
          if (label && !options.allowUnusedLabels) {
            file.bindDiagnostics.push(ts.createDiagnosticForNode(label, ts.Diagnostics.Unused_label));
          }
          currentReachabilityState = outerState;
        } else {
          currentReachabilityState = or(innerMergedState, outerState);
        }
      }
      function jumpToLabel(label, outerState) {
        initializeReachabilityStateIfNecessary();
        var index = label ? labelIndexMap[label.text] : ts.lastOrUndefined(implicitLabels);
        if (index === undefined) {
          return false;
        }
        var stateAtLabel = labelStack[index];
        labelStack[index] = stateAtLabel === 1 ? outerState : or(stateAtLabel, outerState);
        return true;
      }
      function checkUnreachable(node) {
        switch (currentReachabilityState) {
          case 4:
            var reportError = (ts.isStatement(node) && node.kind !== 197) || node.kind === 217 || (node.kind === 221 && shouldReportErrorOnModuleDeclaration(node)) || (node.kind === 220 && (!ts.isConstEnumDeclaration(node) || options.preserveConstEnums));
            if (reportError) {
              currentReachabilityState = 8;
              var reportUnreachableCode = !options.allowUnreachableCode && !ts.isInAmbientContext(node) && (node.kind !== 196 || ts.getCombinedNodeFlags(node.declarationList) & 24576 || ts.forEach(node.declarationList.declarations, function(d) {
                return d.initializer;
              }));
              if (reportUnreachableCode) {
                errorOnFirstToken(node, ts.Diagnostics.Unreachable_code_detected);
              }
            }
          case 8:
            return true;
          default:
            return false;
        }
        function shouldReportErrorOnModuleDeclaration(node) {
          var instanceState = getModuleInstanceState(node);
          return instanceState === 1 || (instanceState === 2 && options.preserveConstEnums);
        }
      }
      function initializeReachabilityStateIfNecessary() {
        if (labelIndexMap) {
          return;
        }
        currentReachabilityState = 2;
        labelIndexMap = {};
        labelStack = [];
        implicitLabels = [];
      }
    }
  })(ts || (ts = {}));
  var ts;
  (function(ts) {
    var nextSymbolId = 1;
    var nextNodeId = 1;
    var nextMergeId = 1;
    function getNodeId(node) {
      if (!node.id) {
        node.id = nextNodeId;
        nextNodeId++;
      }
      return node.id;
    }
    ts.getNodeId = getNodeId;
    ts.checkTime = 0;
    function getSymbolId(symbol) {
      if (!symbol.id) {
        symbol.id = nextSymbolId;
        nextSymbolId++;
      }
      return symbol.id;
    }
    ts.getSymbolId = getSymbolId;
    function createTypeChecker(host, produceDiagnostics) {
      var cancellationToken;
      var Symbol = ts.objectAllocator.getSymbolConstructor();
      var Type = ts.objectAllocator.getTypeConstructor();
      var Signature = ts.objectAllocator.getSignatureConstructor();
      var typeCount = 0;
      var symbolCount = 0;
      var emptyArray = [];
      var emptySymbols = {};
      var compilerOptions = host.getCompilerOptions();
      var languageVersion = compilerOptions.target || 0;
      var modulekind = ts.getEmitModuleKind(compilerOptions);
      var allowSyntheticDefaultImports = typeof compilerOptions.allowSyntheticDefaultImports !== "undefined" ? compilerOptions.allowSyntheticDefaultImports : modulekind === 4;
      var emitResolver = createResolver();
      var undefinedSymbol = createSymbol(4 | 67108864, "undefined");
      undefinedSymbol.declarations = [];
      var argumentsSymbol = createSymbol(4 | 67108864, "arguments");
      var checker = {
        getNodeCount: function() {
          return ts.sum(host.getSourceFiles(), "nodeCount");
        },
        getIdentifierCount: function() {
          return ts.sum(host.getSourceFiles(), "identifierCount");
        },
        getSymbolCount: function() {
          return ts.sum(host.getSourceFiles(), "symbolCount") + symbolCount;
        },
        getTypeCount: function() {
          return typeCount;
        },
        isUndefinedSymbol: function(symbol) {
          return symbol === undefinedSymbol;
        },
        isArgumentsSymbol: function(symbol) {
          return symbol === argumentsSymbol;
        },
        isUnknownSymbol: function(symbol) {
          return symbol === unknownSymbol;
        },
        getDiagnostics: getDiagnostics,
        getGlobalDiagnostics: getGlobalDiagnostics,
        getTypeOfSymbolAtLocation: getNarrowedTypeOfSymbol,
        getSymbolsOfParameterPropertyDeclaration: getSymbolsOfParameterPropertyDeclaration,
        getDeclaredTypeOfSymbol: getDeclaredTypeOfSymbol,
        getPropertiesOfType: getPropertiesOfType,
        getPropertyOfType: getPropertyOfType,
        getSignaturesOfType: getSignaturesOfType,
        getIndexTypeOfType: getIndexTypeOfType,
        getBaseTypes: getBaseTypes,
        getReturnTypeOfSignature: getReturnTypeOfSignature,
        getSymbolsInScope: getSymbolsInScope,
        getSymbolAtLocation: getSymbolAtLocation,
        getShorthandAssignmentValueSymbol: getShorthandAssignmentValueSymbol,
        getExportSpecifierLocalTargetSymbol: getExportSpecifierLocalTargetSymbol,
        getTypeAtLocation: getTypeOfNode,
        typeToString: typeToString,
        getSymbolDisplayBuilder: getSymbolDisplayBuilder,
        symbolToString: symbolToString,
        getAugmentedPropertiesOfType: getAugmentedPropertiesOfType,
        getRootSymbols: getRootSymbols,
        getContextualType: getContextualType,
        getFullyQualifiedName: getFullyQualifiedName,
        getResolvedSignature: getResolvedSignature,
        getConstantValue: getConstantValue,
        isValidPropertyAccess: isValidPropertyAccess,
        getSignatureFromDeclaration: getSignatureFromDeclaration,
        isImplementationOfOverload: isImplementationOfOverload,
        getAliasedSymbol: resolveAlias,
        getEmitResolver: getEmitResolver,
        getExportsOfModule: getExportsOfModuleAsArray,
        getJsxElementAttributesType: getJsxElementAttributesType,
        getJsxIntrinsicTagNames: getJsxIntrinsicTagNames,
        isOptionalParameter: isOptionalParameter
      };
      var unknownSymbol = createSymbol(4 | 67108864, "unknown");
      var resolvingSymbol = createSymbol(67108864, "__resolving__");
      var anyType = createIntrinsicType(1, "any");
      var stringType = createIntrinsicType(2, "string");
      var numberType = createIntrinsicType(4, "number");
      var booleanType = createIntrinsicType(8, "boolean");
      var esSymbolType = createIntrinsicType(16777216, "symbol");
      var voidType = createIntrinsicType(16, "void");
      var undefinedType = createIntrinsicType(32 | 2097152, "undefined");
      var nullType = createIntrinsicType(64 | 2097152, "null");
      var unknownType = createIntrinsicType(1, "unknown");
      var emptyObjectType = createAnonymousType(undefined, emptySymbols, emptyArray, emptyArray, undefined, undefined);
      var emptyUnionType = emptyObjectType;
      var emptyGenericType = createAnonymousType(undefined, emptySymbols, emptyArray, emptyArray, undefined, undefined);
      emptyGenericType.instantiations = {};
      var anyFunctionType = createAnonymousType(undefined, emptySymbols, emptyArray, emptyArray, undefined, undefined);
      anyFunctionType.flags |= 8388608;
      var noConstraintType = createAnonymousType(undefined, emptySymbols, emptyArray, emptyArray, undefined, undefined);
      var anySignature = createSignature(undefined, undefined, emptyArray, anyType, undefined, 0, false, false);
      var unknownSignature = createSignature(undefined, undefined, emptyArray, unknownType, undefined, 0, false, false);
      var globals = {};
      var globalESSymbolConstructorSymbol;
      var getGlobalPromiseConstructorSymbol;
      var globalObjectType;
      var globalFunctionType;
      var globalArrayType;
      var globalStringType;
      var globalNumberType;
      var globalBooleanType;
      var globalRegExpType;
      var globalTemplateStringsArrayType;
      var globalESSymbolType;
      var globalIterableType;
      var globalIteratorType;
      var globalIterableIteratorType;
      var anyArrayType;
      var getGlobalClassDecoratorType;
      var getGlobalParameterDecoratorType;
      var getGlobalPropertyDecoratorType;
      var getGlobalMethodDecoratorType;
      var getGlobalTypedPropertyDescriptorType;
      var getGlobalPromiseType;
      var tryGetGlobalPromiseType;
      var getGlobalPromiseLikeType;
      var getInstantiatedGlobalPromiseLikeType;
      var getGlobalPromiseConstructorLikeType;
      var getGlobalThenableType;
      var jsxElementClassType;
      var deferredNodes;
      var tupleTypes = {};
      var unionTypes = {};
      var intersectionTypes = {};
      var stringLiteralTypes = {};
      var resolutionTargets = [];
      var resolutionResults = [];
      var resolutionPropertyNames = [];
      var mergedSymbols = [];
      var symbolLinks = [];
      var nodeLinks = [];
      var potentialThisCollisions = [];
      var awaitedTypeStack = [];
      var diagnostics = ts.createDiagnosticCollection();
      var primitiveTypeInfo = {
        "string": {
          type: stringType,
          flags: 258
        },
        "number": {
          type: numberType,
          flags: 132
        },
        "boolean": {
          type: booleanType,
          flags: 8
        },
        "symbol": {
          type: esSymbolType,
          flags: 16777216
        },
        "undefined": {
          type: undefinedType,
          flags: 2097152
        }
      };
      var jsxElementType;
      var jsxTypes = {};
      var JsxNames = {
        JSX: "JSX",
        IntrinsicElements: "IntrinsicElements",
        ElementClass: "ElementClass",
        ElementAttributesPropertyNameContainer: "ElementAttributesProperty",
        Element: "Element",
        IntrinsicAttributes: "IntrinsicAttributes",
        IntrinsicClassAttributes: "IntrinsicClassAttributes"
      };
      var subtypeRelation = {};
      var assignableRelation = {};
      var identityRelation = {};
      var _displayBuilder;
      var builtinGlobals = (_a = {}, _a[undefinedSymbol.name] = undefinedSymbol, _a);
      initializeTypeChecker();
      return checker;
      function getEmitResolver(sourceFile, cancellationToken) {
        getDiagnostics(sourceFile, cancellationToken);
        return emitResolver;
      }
      function error(location, message, arg0, arg1, arg2) {
        var diagnostic = location ? ts.createDiagnosticForNode(location, message, arg0, arg1, arg2) : ts.createCompilerDiagnostic(message, arg0, arg1, arg2);
        diagnostics.add(diagnostic);
      }
      function createSymbol(flags, name) {
        symbolCount++;
        return new Symbol(flags, name);
      }
      function getExcludedSymbolFlags(flags) {
        var result = 0;
        if (flags & 2)
          result |= 107455;
        if (flags & 1)
          result |= 107454;
        if (flags & 4)
          result |= 107455;
        if (flags & 8)
          result |= 107455;
        if (flags & 16)
          result |= 106927;
        if (flags & 32)
          result |= 899519;
        if (flags & 64)
          result |= 792960;
        if (flags & 256)
          result |= 899327;
        if (flags & 128)
          result |= 899967;
        if (flags & 512)
          result |= 106639;
        if (flags & 8192)
          result |= 99263;
        if (flags & 32768)
          result |= 41919;
        if (flags & 65536)
          result |= 74687;
        if (flags & 262144)
          result |= 530912;
        if (flags & 524288)
          result |= 793056;
        if (flags & 8388608)
          result |= 8388608;
        return result;
      }
      function recordMergedSymbol(target, source) {
        if (!source.mergeId) {
          source.mergeId = nextMergeId;
          nextMergeId++;
        }
        mergedSymbols[source.mergeId] = target;
      }
      function cloneSymbol(symbol) {
        var result = createSymbol(symbol.flags | 33554432, symbol.name);
        result.declarations = symbol.declarations.slice(0);
        result.parent = symbol.parent;
        if (symbol.valueDeclaration)
          result.valueDeclaration = symbol.valueDeclaration;
        if (symbol.constEnumOnlyModule)
          result.constEnumOnlyModule = true;
        if (symbol.members)
          result.members = cloneSymbolTable(symbol.members);
        if (symbol.exports)
          result.exports = cloneSymbolTable(symbol.exports);
        recordMergedSymbol(result, symbol);
        return result;
      }
      function mergeSymbol(target, source) {
        if (!(target.flags & getExcludedSymbolFlags(source.flags))) {
          if (source.flags & 512 && target.flags & 512 && target.constEnumOnlyModule && !source.constEnumOnlyModule) {
            target.constEnumOnlyModule = false;
          }
          target.flags |= source.flags;
          if (source.valueDeclaration && (!target.valueDeclaration || (target.valueDeclaration.kind === 221 && source.valueDeclaration.kind !== 221))) {
            target.valueDeclaration = source.valueDeclaration;
          }
          ts.forEach(source.declarations, function(node) {
            target.declarations.push(node);
          });
          if (source.members) {
            if (!target.members)
              target.members = {};
            mergeSymbolTable(target.members, source.members);
          }
          if (source.exports) {
            if (!target.exports)
              target.exports = {};
            mergeSymbolTable(target.exports, source.exports);
          }
          recordMergedSymbol(target, source);
        } else {
          var message_2 = target.flags & 2 || source.flags & 2 ? ts.Diagnostics.Cannot_redeclare_block_scoped_variable_0 : ts.Diagnostics.Duplicate_identifier_0;
          ts.forEach(source.declarations, function(node) {
            error(node.name ? node.name : node, message_2, symbolToString(source));
          });
          ts.forEach(target.declarations, function(node) {
            error(node.name ? node.name : node, message_2, symbolToString(source));
          });
        }
      }
      function cloneSymbolTable(symbolTable) {
        var result = {};
        for (var id in symbolTable) {
          if (ts.hasProperty(symbolTable, id)) {
            result[id] = symbolTable[id];
          }
        }
        return result;
      }
      function mergeSymbolTable(target, source) {
        for (var id in source) {
          if (ts.hasProperty(source, id)) {
            if (!ts.hasProperty(target, id)) {
              target[id] = source[id];
            } else {
              var symbol = target[id];
              if (!(symbol.flags & 33554432)) {
                target[id] = symbol = cloneSymbol(symbol);
              }
              mergeSymbol(symbol, source[id]);
            }
          }
        }
      }
      function mergeModuleAugmentation(moduleName) {
        var moduleAugmentation = moduleName.parent;
        if (moduleAugmentation.symbol.valueDeclaration !== moduleAugmentation) {
          ts.Debug.assert(moduleAugmentation.symbol.declarations.length > 1);
          return;
        }
        if (ts.isGlobalScopeAugmentation(moduleAugmentation)) {
          mergeSymbolTable(globals, moduleAugmentation.symbol.exports);
        } else {
          var mainModule = resolveExternalModuleNameWorker(moduleName, moduleName, ts.Diagnostics.Invalid_module_name_in_augmentation_module_0_cannot_be_found);
          if (!mainModule) {
            return;
          }
          mainModule = resolveExternalModuleSymbol(mainModule);
          if (mainModule.flags & 1536) {
            mainModule = mainModule.flags & 33554432 ? mainModule : cloneSymbol(mainModule);
            mergeSymbol(mainModule, moduleAugmentation.symbol);
          } else {
            error(moduleName, ts.Diagnostics.Cannot_augment_module_0_because_it_resolves_to_a_non_module_entity, moduleName.text);
          }
        }
      }
      function addToSymbolTable(target, source, message) {
        for (var id in source) {
          if (ts.hasProperty(source, id)) {
            if (ts.hasProperty(target, id)) {
              ts.forEach(target[id].declarations, addDeclarationDiagnostic(id, message));
            } else {
              target[id] = source[id];
            }
          }
        }
        function addDeclarationDiagnostic(id, message) {
          return function(declaration) {
            return diagnostics.add(ts.createDiagnosticForNode(declaration, message, id));
          };
        }
      }
      function getSymbolLinks(symbol) {
        if (symbol.flags & 67108864)
          return symbol;
        var id = getSymbolId(symbol);
        return symbolLinks[id] || (symbolLinks[id] = {});
      }
      function getNodeLinks(node) {
        var nodeId = getNodeId(node);
        return nodeLinks[nodeId] || (nodeLinks[nodeId] = {});
      }
      function isGlobalSourceFile(node) {
        return node.kind === 251 && !ts.isExternalOrCommonJsModule(node);
      }
      function getSymbol(symbols, name, meaning) {
        if (meaning && ts.hasProperty(symbols, name)) {
          var symbol = symbols[name];
          ts.Debug.assert((symbol.flags & 16777216) === 0, "Should never get an instantiated symbol here.");
          if (symbol.flags & meaning) {
            return symbol;
          }
          if (symbol.flags & 8388608) {
            var target = resolveAlias(symbol);
            if (target === unknownSymbol || target.flags & meaning) {
              return symbol;
            }
          }
        }
      }
      function getSymbolsOfParameterPropertyDeclaration(parameter, parameterName) {
        var constructoDeclaration = parameter.parent;
        var classDeclaration = parameter.parent.parent;
        var parameterSymbol = getSymbol(constructoDeclaration.locals, parameterName, 107455);
        var propertySymbol = getSymbol(classDeclaration.symbol.members, parameterName, 107455);
        if (parameterSymbol && propertySymbol) {
          return [parameterSymbol, propertySymbol];
        }
        ts.Debug.fail("There should exist two symbols, one as property declaration and one as parameter declaration");
      }
      function isBlockScopedNameDeclaredBeforeUse(declaration, usage) {
        var declarationFile = ts.getSourceFileOfNode(declaration);
        var useFile = ts.getSourceFileOfNode(usage);
        if (declarationFile !== useFile) {
          if (modulekind || (!compilerOptions.outFile && !compilerOptions.out)) {
            return true;
          }
          var sourceFiles = host.getSourceFiles();
          return ts.indexOf(sourceFiles, declarationFile) <= ts.indexOf(sourceFiles, useFile);
        }
        if (declaration.pos <= usage.pos) {
          return declaration.kind !== 214 || !isImmediatelyUsedInInitializerOfBlockScopedVariable(declaration, usage);
        }
        return isUsedInFunctionOrNonStaticProperty(declaration, usage);
        function isImmediatelyUsedInInitializerOfBlockScopedVariable(declaration, usage) {
          var container = ts.getEnclosingBlockScopeContainer(declaration);
          if (declaration.parent.parent.kind === 196 || declaration.parent.parent.kind === 202) {
            return isSameScopeDescendentOf(usage, declaration, container);
          } else if (declaration.parent.parent.kind === 204 || declaration.parent.parent.kind === 203) {
            var expression = declaration.parent.parent.expression;
            return isSameScopeDescendentOf(usage, expression, container);
          }
        }
        function isUsedInFunctionOrNonStaticProperty(declaration, usage) {
          var container = ts.getEnclosingBlockScopeContainer(declaration);
          var current = usage;
          while (current) {
            if (current === container) {
              return false;
            }
            if (ts.isFunctionLike(current)) {
              return true;
            }
            var initializerOfNonStaticProperty = current.parent && current.parent.kind === 142 && (current.parent.flags & 64) === 0 && current.parent.initializer === current;
            if (initializerOfNonStaticProperty) {
              return true;
            }
            current = current.parent;
          }
          return false;
        }
      }
      function resolveName(location, name, meaning, nameNotFoundMessage, nameArg) {
        var result;
        var lastLocation;
        var propertyWithInvalidInitializer;
        var errorLocation = location;
        var grandparent;
        loop: while (location) {
          if (location.locals && !isGlobalSourceFile(location)) {
            if (result = getSymbol(location.locals, name, meaning)) {
              var useResult = true;
              if (ts.isFunctionLike(location) && lastLocation && lastLocation !== location.body) {
                if (meaning & result.flags & 793056 && lastLocation.kind !== 268) {
                  useResult = result.flags & 262144 ? lastLocation === location.type || lastLocation.kind === 139 || lastLocation.kind === 138 : false;
                }
                if (meaning & 107455 && result.flags & 1) {
                  useResult = lastLocation.kind === 139 || (lastLocation === location.type && result.valueDeclaration.kind === 139);
                }
              }
              if (useResult) {
                break loop;
              } else {
                result = undefined;
              }
            }
          }
          switch (location.kind) {
            case 251:
              if (!ts.isExternalOrCommonJsModule(location))
                break;
            case 221:
              var moduleExports = getSymbolOfNode(location).exports;
              if (location.kind === 251 || ts.isAmbientModule(location)) {
                if (result = moduleExports["default"]) {
                  var localSymbol = ts.getLocalSymbolForExportDefault(result);
                  if (localSymbol && (result.flags & meaning) && localSymbol.name === name) {
                    break loop;
                  }
                  result = undefined;
                }
                if (ts.hasProperty(moduleExports, name) && moduleExports[name].flags === 8388608 && ts.getDeclarationOfKind(moduleExports[name], 233)) {
                  break;
                }
              }
              if (result = getSymbol(moduleExports, name, meaning & 8914931)) {
                break loop;
              }
              break;
            case 220:
              if (result = getSymbol(getSymbolOfNode(location).exports, name, meaning & 8)) {
                break loop;
              }
              break;
            case 142:
            case 141:
              if (ts.isClassLike(location.parent) && !(location.flags & 64)) {
                var ctor = findConstructorDeclaration(location.parent);
                if (ctor && ctor.locals) {
                  if (getSymbol(ctor.locals, name, meaning & 107455)) {
                    propertyWithInvalidInitializer = location;
                  }
                }
              }
              break;
            case 217:
            case 189:
            case 218:
              if (result = getSymbol(getSymbolOfNode(location).members, name, meaning & 793056)) {
                if (lastLocation && lastLocation.flags & 64) {
                  error(errorLocation, ts.Diagnostics.Static_members_cannot_reference_class_type_parameters);
                  return undefined;
                }
                break loop;
              }
              if (location.kind === 189 && meaning & 32) {
                var className = location.name;
                if (className && name === className.text) {
                  result = location.symbol;
                  break loop;
                }
              }
              break;
            case 137:
              grandparent = location.parent.parent;
              if (ts.isClassLike(grandparent) || grandparent.kind === 218) {
                if (result = getSymbol(getSymbolOfNode(grandparent).members, name, meaning & 793056)) {
                  error(errorLocation, ts.Diagnostics.A_computed_property_name_cannot_reference_a_type_parameter_from_its_containing_type);
                  return undefined;
                }
              }
              break;
            case 144:
            case 143:
            case 145:
            case 146:
            case 147:
            case 216:
            case 177:
              if (meaning & 3 && name === "arguments") {
                result = argumentsSymbol;
                break loop;
              }
              break;
            case 176:
              if (meaning & 3 && name === "arguments") {
                result = argumentsSymbol;
                break loop;
              }
              if (meaning & 16) {
                var functionName = location.name;
                if (functionName && name === functionName.text) {
                  result = location.symbol;
                  break loop;
                }
              }
              break;
            case 140:
              if (location.parent && location.parent.kind === 139) {
                location = location.parent;
              }
              if (location.parent && ts.isClassElement(location.parent)) {
                location = location.parent;
              }
              break;
          }
          lastLocation = location;
          location = location.parent;
        }
        if (!result) {
          result = getSymbol(globals, name, meaning);
        }
        if (!result) {
          if (nameNotFoundMessage) {
            if (!checkAndReportErrorForMissingPrefix(errorLocation, name, nameArg)) {
              error(errorLocation, nameNotFoundMessage, typeof nameArg === "string" ? nameArg : ts.declarationNameToString(nameArg));
            }
          }
          return undefined;
        }
        if (nameNotFoundMessage) {
          if (propertyWithInvalidInitializer) {
            var propertyName = propertyWithInvalidInitializer.name;
            error(errorLocation, ts.Diagnostics.Initializer_of_instance_member_variable_0_cannot_reference_identifier_1_declared_in_the_constructor, ts.declarationNameToString(propertyName), typeof nameArg === "string" ? nameArg : ts.declarationNameToString(nameArg));
            return undefined;
          }
          if (meaning & 2) {
            var exportOrLocalSymbol = getExportSymbolOfValueSymbolIfExported(result);
            if (exportOrLocalSymbol.flags & 2) {
              checkResolvedBlockScopedVariable(exportOrLocalSymbol, errorLocation);
            }
          }
        }
        return result;
      }
      function checkAndReportErrorForMissingPrefix(errorLocation, name, nameArg) {
        if (!errorLocation || (errorLocation.kind === 69 && (isTypeReferenceIdentifier(errorLocation)) || isInTypeQuery(errorLocation))) {
          return false;
        }
        var container = ts.getThisContainer(errorLocation, true);
        var location = container;
        while (location) {
          if (ts.isClassLike(location.parent)) {
            var classSymbol = getSymbolOfNode(location.parent);
            if (!classSymbol) {
              break;
            }
            var constructorType = getTypeOfSymbol(classSymbol);
            if (getPropertyOfType(constructorType, name)) {
              error(errorLocation, ts.Diagnostics.Cannot_find_name_0_Did_you_mean_the_static_member_1_0, typeof nameArg === "string" ? nameArg : ts.declarationNameToString(nameArg), symbolToString(classSymbol));
              return true;
            }
            if (location === container && !(location.flags & 64)) {
              var instanceType = getDeclaredTypeOfSymbol(classSymbol).thisType;
              if (getPropertyOfType(instanceType, name)) {
                error(errorLocation, ts.Diagnostics.Cannot_find_name_0_Did_you_mean_the_instance_member_this_0, typeof nameArg === "string" ? nameArg : ts.declarationNameToString(nameArg));
                return true;
              }
            }
          }
          location = location.parent;
        }
        return false;
      }
      function checkResolvedBlockScopedVariable(result, errorLocation) {
        ts.Debug.assert((result.flags & 2) !== 0);
        var declaration = ts.forEach(result.declarations, function(d) {
          return ts.isBlockOrCatchScoped(d) ? d : undefined;
        });
        ts.Debug.assert(declaration !== undefined, "Block-scoped variable declaration is undefined");
        if (!isBlockScopedNameDeclaredBeforeUse(ts.getAncestor(declaration, 214), errorLocation)) {
          error(errorLocation, ts.Diagnostics.Block_scoped_variable_0_used_before_its_declaration, ts.declarationNameToString(declaration.name));
        }
      }
      function isSameScopeDescendentOf(initial, parent, stopAt) {
        if (!parent) {
          return false;
        }
        for (var current = initial; current && current !== stopAt && !ts.isFunctionLike(current); current = current.parent) {
          if (current === parent) {
            return true;
          }
        }
        return false;
      }
      function getAnyImportSyntax(node) {
        if (ts.isAliasSymbolDeclaration(node)) {
          if (node.kind === 224) {
            return node;
          }
          while (node && node.kind !== 225) {
            node = node.parent;
          }
          return node;
        }
      }
      function getDeclarationOfAliasSymbol(symbol) {
        return ts.forEach(symbol.declarations, function(d) {
          return ts.isAliasSymbolDeclaration(d) ? d : undefined;
        });
      }
      function getTargetOfImportEqualsDeclaration(node) {
        if (node.moduleReference.kind === 235) {
          return resolveExternalModuleSymbol(resolveExternalModuleName(node, ts.getExternalModuleImportEqualsDeclarationExpression(node)));
        }
        return getSymbolOfPartOfRightHandSideOfImportEquals(node.moduleReference, node);
      }
      function getTargetOfImportClause(node) {
        var moduleSymbol = resolveExternalModuleName(node, node.parent.moduleSpecifier);
        if (moduleSymbol) {
          var exportDefaultSymbol = moduleSymbol.exports["export="] ? getPropertyOfType(getTypeOfSymbol(moduleSymbol.exports["export="]), "default") : resolveSymbol(moduleSymbol.exports["default"]);
          if (!exportDefaultSymbol && !allowSyntheticDefaultImports) {
            error(node.name, ts.Diagnostics.Module_0_has_no_default_export, symbolToString(moduleSymbol));
          } else if (!exportDefaultSymbol && allowSyntheticDefaultImports) {
            return resolveExternalModuleSymbol(moduleSymbol) || resolveSymbol(moduleSymbol);
          }
          return exportDefaultSymbol;
        }
      }
      function getTargetOfNamespaceImport(node) {
        var moduleSpecifier = node.parent.parent.moduleSpecifier;
        return resolveESModuleSymbol(resolveExternalModuleName(node, moduleSpecifier), moduleSpecifier);
      }
      function combineValueAndTypeSymbols(valueSymbol, typeSymbol) {
        if (valueSymbol.flags & (793056 | 1536)) {
          return valueSymbol;
        }
        var result = createSymbol(valueSymbol.flags | typeSymbol.flags, valueSymbol.name);
        result.declarations = ts.concatenate(valueSymbol.declarations, typeSymbol.declarations);
        result.parent = valueSymbol.parent || typeSymbol.parent;
        if (valueSymbol.valueDeclaration)
          result.valueDeclaration = valueSymbol.valueDeclaration;
        if (typeSymbol.members)
          result.members = typeSymbol.members;
        if (valueSymbol.exports)
          result.exports = valueSymbol.exports;
        return result;
      }
      function getExportOfModule(symbol, name) {
        if (symbol.flags & 1536) {
          var exports = getExportsOfSymbol(symbol);
          if (ts.hasProperty(exports, name)) {
            return resolveSymbol(exports[name]);
          }
        }
      }
      function getPropertyOfVariable(symbol, name) {
        if (symbol.flags & 3) {
          var typeAnnotation = symbol.valueDeclaration.type;
          if (typeAnnotation) {
            return resolveSymbol(getPropertyOfType(getTypeFromTypeNode(typeAnnotation), name));
          }
        }
      }
      function getExternalModuleMember(node, specifier) {
        var moduleSymbol = resolveExternalModuleName(node, node.moduleSpecifier);
        var targetSymbol = resolveESModuleSymbol(moduleSymbol, node.moduleSpecifier);
        if (targetSymbol) {
          var name_9 = specifier.propertyName || specifier.name;
          if (name_9.text) {
            var symbolFromVariable = void 0;
            if (moduleSymbol && moduleSymbol.exports && moduleSymbol.exports["export="]) {
              symbolFromVariable = getPropertyOfType(getTypeOfSymbol(targetSymbol), name_9.text);
            } else {
              symbolFromVariable = getPropertyOfVariable(targetSymbol, name_9.text);
            }
            var symbolFromModule = getExportOfModule(targetSymbol, name_9.text);
            var symbol = symbolFromModule && symbolFromVariable ? combineValueAndTypeSymbols(symbolFromVariable, symbolFromModule) : symbolFromModule || symbolFromVariable;
            if (!symbol) {
              error(name_9, ts.Diagnostics.Module_0_has_no_exported_member_1, getFullyQualifiedName(moduleSymbol), ts.declarationNameToString(name_9));
            }
            return symbol;
          }
        }
      }
      function getTargetOfImportSpecifier(node) {
        return getExternalModuleMember(node.parent.parent.parent, node);
      }
      function getTargetOfExportSpecifier(node) {
        return node.parent.parent.moduleSpecifier ? getExternalModuleMember(node.parent.parent, node) : resolveEntityName(node.propertyName || node.name, 107455 | 793056 | 1536);
      }
      function getTargetOfExportAssignment(node) {
        return resolveEntityName(node.expression, 107455 | 793056 | 1536);
      }
      function getTargetOfAliasDeclaration(node) {
        switch (node.kind) {
          case 224:
            return getTargetOfImportEqualsDeclaration(node);
          case 226:
            return getTargetOfImportClause(node);
          case 227:
            return getTargetOfNamespaceImport(node);
          case 229:
            return getTargetOfImportSpecifier(node);
          case 233:
            return getTargetOfExportSpecifier(node);
          case 230:
            return getTargetOfExportAssignment(node);
        }
      }
      function resolveSymbol(symbol) {
        return symbol && symbol.flags & 8388608 && !(symbol.flags & (107455 | 793056 | 1536)) ? resolveAlias(symbol) : symbol;
      }
      function resolveAlias(symbol) {
        ts.Debug.assert((symbol.flags & 8388608) !== 0, "Should only get Alias here.");
        var links = getSymbolLinks(symbol);
        if (!links.target) {
          links.target = resolvingSymbol;
          var node = getDeclarationOfAliasSymbol(symbol);
          var target = getTargetOfAliasDeclaration(node);
          if (links.target === resolvingSymbol) {
            links.target = target || unknownSymbol;
          } else {
            error(node, ts.Diagnostics.Circular_definition_of_import_alias_0, symbolToString(symbol));
          }
        } else if (links.target === resolvingSymbol) {
          links.target = unknownSymbol;
        }
        return links.target;
      }
      function markExportAsReferenced(node) {
        var symbol = getSymbolOfNode(node);
        var target = resolveAlias(symbol);
        if (target) {
          var markAlias = (target === unknownSymbol && compilerOptions.isolatedModules) || (target !== unknownSymbol && (target.flags & 107455) && !isConstEnumOrConstEnumOnlyModule(target));
          if (markAlias) {
            markAliasSymbolAsReferenced(symbol);
          }
        }
      }
      function markAliasSymbolAsReferenced(symbol) {
        var links = getSymbolLinks(symbol);
        if (!links.referenced) {
          links.referenced = true;
          var node = getDeclarationOfAliasSymbol(symbol);
          if (node.kind === 230) {
            checkExpressionCached(node.expression);
          } else if (node.kind === 233) {
            checkExpressionCached(node.propertyName || node.name);
          } else if (ts.isInternalModuleImportEqualsDeclaration(node)) {
            checkExpressionCached(node.moduleReference);
          }
        }
      }
      function getSymbolOfPartOfRightHandSideOfImportEquals(entityName, importDeclaration) {
        if (!importDeclaration) {
          importDeclaration = ts.getAncestor(entityName, 224);
          ts.Debug.assert(importDeclaration !== undefined);
        }
        if (entityName.kind === 69 && ts.isRightSideOfQualifiedNameOrPropertyAccess(entityName)) {
          entityName = entityName.parent;
        }
        if (entityName.kind === 69 || entityName.parent.kind === 136) {
          return resolveEntityName(entityName, 1536);
        } else {
          ts.Debug.assert(entityName.parent.kind === 224);
          return resolveEntityName(entityName, 107455 | 793056 | 1536);
        }
      }
      function getFullyQualifiedName(symbol) {
        return symbol.parent ? getFullyQualifiedName(symbol.parent) + "." + symbolToString(symbol) : symbolToString(symbol);
      }
      function resolveEntityName(name, meaning, ignoreErrors) {
        if (ts.nodeIsMissing(name)) {
          return undefined;
        }
        var symbol;
        if (name.kind === 69) {
          var message = meaning === 1536 ? ts.Diagnostics.Cannot_find_namespace_0 : ts.Diagnostics.Cannot_find_name_0;
          symbol = resolveName(name, name.text, meaning, ignoreErrors ? undefined : message, name);
          if (!symbol) {
            return undefined;
          }
        } else if (name.kind === 136 || name.kind === 169) {
          var left = name.kind === 136 ? name.left : name.expression;
          var right = name.kind === 136 ? name.right : name.name;
          var namespace = resolveEntityName(left, 1536, ignoreErrors);
          if (!namespace || namespace === unknownSymbol || ts.nodeIsMissing(right)) {
            return undefined;
          }
          symbol = getSymbol(getExportsOfSymbol(namespace), right.text, meaning);
          if (!symbol) {
            if (!ignoreErrors) {
              error(right, ts.Diagnostics.Module_0_has_no_exported_member_1, getFullyQualifiedName(namespace), ts.declarationNameToString(right));
            }
            return undefined;
          }
        } else {
          ts.Debug.fail("Unknown entity name kind.");
        }
        ts.Debug.assert((symbol.flags & 16777216) === 0, "Should never get an instantiated symbol here.");
        return symbol.flags & meaning ? symbol : resolveAlias(symbol);
      }
      function resolveExternalModuleName(location, moduleReferenceExpression) {
        return resolveExternalModuleNameWorker(location, moduleReferenceExpression, ts.Diagnostics.Cannot_find_module_0);
      }
      function resolveExternalModuleNameWorker(location, moduleReferenceExpression, moduleNotFoundError) {
        if (moduleReferenceExpression.kind !== 9) {
          return;
        }
        var moduleReferenceLiteral = moduleReferenceExpression;
        var moduleName = ts.escapeIdentifier(moduleReferenceLiteral.text);
        if (moduleName === undefined) {
          return;
        }
        var isRelative = ts.isExternalModuleNameRelative(moduleName);
        if (!isRelative) {
          var symbol = getSymbol(globals, "\"" + moduleName + "\"", 512);
          if (symbol) {
            return getMergedSymbol(symbol);
          }
        }
        var resolvedModule = ts.getResolvedModule(ts.getSourceFileOfNode(location), moduleReferenceLiteral.text);
        var sourceFile = resolvedModule && host.getSourceFile(resolvedModule.resolvedFileName);
        if (sourceFile) {
          if (sourceFile.symbol) {
            return getMergedSymbol(sourceFile.symbol);
          }
          if (moduleNotFoundError) {
            error(moduleReferenceLiteral, ts.Diagnostics.File_0_is_not_a_module, sourceFile.fileName);
          }
          return undefined;
        }
        if (moduleNotFoundError) {
          error(moduleReferenceLiteral, moduleNotFoundError, moduleName);
        }
        return undefined;
      }
      function resolveExternalModuleSymbol(moduleSymbol) {
        return moduleSymbol && getMergedSymbol(resolveSymbol(moduleSymbol.exports["export="])) || moduleSymbol;
      }
      function resolveESModuleSymbol(moduleSymbol, moduleReferenceExpression) {
        var symbol = resolveExternalModuleSymbol(moduleSymbol);
        if (symbol && !(symbol.flags & (1536 | 3))) {
          error(moduleReferenceExpression, ts.Diagnostics.Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct, symbolToString(moduleSymbol));
          symbol = undefined;
        }
        return symbol;
      }
      function hasExportAssignmentSymbol(moduleSymbol) {
        return moduleSymbol.exports["export="] !== undefined;
      }
      function getExportsOfModuleAsArray(moduleSymbol) {
        return symbolsToArray(getExportsOfModule(moduleSymbol));
      }
      function getExportsOfSymbol(symbol) {
        return symbol.flags & 1536 ? getExportsOfModule(symbol) : symbol.exports || emptySymbols;
      }
      function getExportsOfModule(moduleSymbol) {
        var links = getSymbolLinks(moduleSymbol);
        return links.resolvedExports || (links.resolvedExports = getExportsForModule(moduleSymbol));
      }
      function extendExportSymbols(target, source, lookupTable, exportNode) {
        for (var id in source) {
          if (id !== "default" && !ts.hasProperty(target, id)) {
            target[id] = source[id];
            if (lookupTable && exportNode) {
              lookupTable[id] = {specifierText: ts.getTextOfNode(exportNode.moduleSpecifier)};
            }
          } else if (lookupTable && exportNode && id !== "default" && ts.hasProperty(target, id) && resolveSymbol(target[id]) !== resolveSymbol(source[id])) {
            if (!lookupTable[id].exportsWithDuplicate) {
              lookupTable[id].exportsWithDuplicate = [exportNode];
            } else {
              lookupTable[id].exportsWithDuplicate.push(exportNode);
            }
          }
        }
      }
      function getExportsForModule(moduleSymbol) {
        var visitedSymbols = [];
        return visit(moduleSymbol) || moduleSymbol.exports;
        function visit(symbol) {
          if (!(symbol && symbol.flags & 1952 && !ts.contains(visitedSymbols, symbol))) {
            return;
          }
          visitedSymbols.push(symbol);
          var symbols = cloneSymbolTable(symbol.exports);
          var exportStars = symbol.exports["__export"];
          if (exportStars) {
            var nestedSymbols = {};
            var lookupTable = {};
            for (var _i = 0,
                _a = exportStars.declarations; _i < _a.length; _i++) {
              var node = _a[_i];
              var resolvedModule = resolveExternalModuleName(node, node.moduleSpecifier);
              var exportedSymbols = visit(resolvedModule);
              extendExportSymbols(nestedSymbols, exportedSymbols, lookupTable, node);
            }
            for (var id in lookupTable) {
              var exportsWithDuplicate = lookupTable[id].exportsWithDuplicate;
              if (id === "export=" || !(exportsWithDuplicate && exportsWithDuplicate.length) || ts.hasProperty(symbols, id)) {
                continue;
              }
              for (var _b = 0,
                  exportsWithDuplicate_1 = exportsWithDuplicate; _b < exportsWithDuplicate_1.length; _b++) {
                var node = exportsWithDuplicate_1[_b];
                diagnostics.add(ts.createDiagnosticForNode(node, ts.Diagnostics.Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambiguity, lookupTable[id].specifierText, id));
              }
            }
            extendExportSymbols(symbols, nestedSymbols);
          }
          return symbols;
        }
      }
      function getMergedSymbol(symbol) {
        var merged;
        return symbol && symbol.mergeId && (merged = mergedSymbols[symbol.mergeId]) ? merged : symbol;
      }
      function getSymbolOfNode(node) {
        return getMergedSymbol(node.symbol);
      }
      function getParentOfSymbol(symbol) {
        return getMergedSymbol(symbol.parent);
      }
      function getExportSymbolOfValueSymbolIfExported(symbol) {
        return symbol && (symbol.flags & 1048576) !== 0 ? getMergedSymbol(symbol.exportSymbol) : symbol;
      }
      function symbolIsValue(symbol) {
        if (symbol.flags & 16777216) {
          return symbolIsValue(getSymbolLinks(symbol).target);
        }
        if (symbol.flags & 107455) {
          return true;
        }
        if (symbol.flags & 8388608) {
          return (resolveAlias(symbol).flags & 107455) !== 0;
        }
        return false;
      }
      function findConstructorDeclaration(node) {
        var members = node.members;
        for (var _i = 0,
            members_1 = members; _i < members_1.length; _i++) {
          var member = members_1[_i];
          if (member.kind === 145 && ts.nodeIsPresent(member.body)) {
            return member;
          }
        }
      }
      function createType(flags) {
        var result = new Type(checker, flags);
        result.id = typeCount;
        typeCount++;
        return result;
      }
      function createIntrinsicType(kind, intrinsicName) {
        var type = createType(kind);
        type.intrinsicName = intrinsicName;
        return type;
      }
      function createObjectType(kind, symbol) {
        var type = createType(kind);
        type.symbol = symbol;
        return type;
      }
      function isReservedMemberName(name) {
        return name.charCodeAt(0) === 95 && name.charCodeAt(1) === 95 && name.charCodeAt(2) !== 95 && name.charCodeAt(2) !== 64;
      }
      function getNamedMembers(members) {
        var result;
        for (var id in members) {
          if (ts.hasProperty(members, id)) {
            if (!isReservedMemberName(id)) {
              if (!result)
                result = [];
              var symbol = members[id];
              if (symbolIsValue(symbol)) {
                result.push(symbol);
              }
            }
          }
        }
        return result || emptyArray;
      }
      function setObjectTypeMembers(type, members, callSignatures, constructSignatures, stringIndexType, numberIndexType) {
        type.members = members;
        type.properties = getNamedMembers(members);
        type.callSignatures = callSignatures;
        type.constructSignatures = constructSignatures;
        if (stringIndexType)
          type.stringIndexType = stringIndexType;
        if (numberIndexType)
          type.numberIndexType = numberIndexType;
        return type;
      }
      function createAnonymousType(symbol, members, callSignatures, constructSignatures, stringIndexType, numberIndexType) {
        return setObjectTypeMembers(createObjectType(65536, symbol), members, callSignatures, constructSignatures, stringIndexType, numberIndexType);
      }
      function forEachSymbolTableInScope(enclosingDeclaration, callback) {
        var result;
        for (var location_1 = enclosingDeclaration; location_1; location_1 = location_1.parent) {
          if (location_1.locals && !isGlobalSourceFile(location_1)) {
            if (result = callback(location_1.locals)) {
              return result;
            }
          }
          switch (location_1.kind) {
            case 251:
              if (!ts.isExternalOrCommonJsModule(location_1)) {
                break;
              }
            case 221:
              if (result = callback(getSymbolOfNode(location_1).exports)) {
                return result;
              }
              break;
            case 217:
            case 218:
              if (result = callback(getSymbolOfNode(location_1).members)) {
                return result;
              }
              break;
          }
        }
        return callback(globals);
      }
      function getQualifiedLeftMeaning(rightMeaning) {
        return rightMeaning === 107455 ? 107455 : 1536;
      }
      function getAccessibleSymbolChain(symbol, enclosingDeclaration, meaning, useOnlyExternalAliasing) {
        function getAccessibleSymbolChainFromSymbolTable(symbols) {
          function canQualifySymbol(symbolFromSymbolTable, meaning) {
            if (!needsQualification(symbolFromSymbolTable, enclosingDeclaration, meaning)) {
              return true;
            }
            var accessibleParent = getAccessibleSymbolChain(symbolFromSymbolTable.parent, enclosingDeclaration, getQualifiedLeftMeaning(meaning), useOnlyExternalAliasing);
            return !!accessibleParent;
          }
          function isAccessible(symbolFromSymbolTable, resolvedAliasSymbol) {
            if (symbol === (resolvedAliasSymbol || symbolFromSymbolTable)) {
              return !ts.forEach(symbolFromSymbolTable.declarations, hasExternalModuleSymbol) && canQualifySymbol(symbolFromSymbolTable, meaning);
            }
          }
          if (isAccessible(ts.lookUp(symbols, symbol.name))) {
            return [symbol];
          }
          return ts.forEachValue(symbols, function(symbolFromSymbolTable) {
            if (symbolFromSymbolTable.flags & 8388608 && symbolFromSymbolTable.name !== "export=" && !ts.getDeclarationOfKind(symbolFromSymbolTable, 233)) {
              if (!useOnlyExternalAliasing || ts.forEach(symbolFromSymbolTable.declarations, ts.isExternalModuleImportEqualsDeclaration)) {
                var resolvedImportedSymbol = resolveAlias(symbolFromSymbolTable);
                if (isAccessible(symbolFromSymbolTable, resolveAlias(symbolFromSymbolTable))) {
                  return [symbolFromSymbolTable];
                }
                var accessibleSymbolsFromExports = resolvedImportedSymbol.exports ? getAccessibleSymbolChainFromSymbolTable(resolvedImportedSymbol.exports) : undefined;
                if (accessibleSymbolsFromExports && canQualifySymbol(symbolFromSymbolTable, getQualifiedLeftMeaning(meaning))) {
                  return [symbolFromSymbolTable].concat(accessibleSymbolsFromExports);
                }
              }
            }
          });
        }
        if (symbol) {
          return forEachSymbolTableInScope(enclosingDeclaration, getAccessibleSymbolChainFromSymbolTable);
        }
      }
      function needsQualification(symbol, enclosingDeclaration, meaning) {
        var qualify = false;
        forEachSymbolTableInScope(enclosingDeclaration, function(symbolTable) {
          if (!ts.hasProperty(symbolTable, symbol.name)) {
            return false;
          }
          var symbolFromSymbolTable = symbolTable[symbol.name];
          if (symbolFromSymbolTable === symbol) {
            return true;
          }
          symbolFromSymbolTable = (symbolFromSymbolTable.flags & 8388608 && !ts.getDeclarationOfKind(symbolFromSymbolTable, 233)) ? resolveAlias(symbolFromSymbolTable) : symbolFromSymbolTable;
          if (symbolFromSymbolTable.flags & meaning) {
            qualify = true;
            return true;
          }
          return false;
        });
        return qualify;
      }
      function isSymbolAccessible(symbol, enclosingDeclaration, meaning) {
        if (symbol && enclosingDeclaration && !(symbol.flags & 262144)) {
          var initialSymbol = symbol;
          var meaningToLook = meaning;
          while (symbol) {
            var accessibleSymbolChain = getAccessibleSymbolChain(symbol, enclosingDeclaration, meaningToLook, false);
            if (accessibleSymbolChain) {
              var hasAccessibleDeclarations = hasVisibleDeclarations(accessibleSymbolChain[0]);
              if (!hasAccessibleDeclarations) {
                return {
                  accessibility: 1,
                  errorSymbolName: symbolToString(initialSymbol, enclosingDeclaration, meaning),
                  errorModuleName: symbol !== initialSymbol ? symbolToString(symbol, enclosingDeclaration, 1536) : undefined
                };
              }
              return hasAccessibleDeclarations;
            }
            meaningToLook = getQualifiedLeftMeaning(meaning);
            symbol = getParentOfSymbol(symbol);
          }
          var symbolExternalModule = ts.forEach(initialSymbol.declarations, getExternalModuleContainer);
          if (symbolExternalModule) {
            var enclosingExternalModule = getExternalModuleContainer(enclosingDeclaration);
            if (symbolExternalModule !== enclosingExternalModule) {
              return {
                accessibility: 2,
                errorSymbolName: symbolToString(initialSymbol, enclosingDeclaration, meaning),
                errorModuleName: symbolToString(symbolExternalModule)
              };
            }
          }
          return {
            accessibility: 1,
            errorSymbolName: symbolToString(initialSymbol, enclosingDeclaration, meaning)
          };
        }
        return {accessibility: 0};
        function getExternalModuleContainer(declaration) {
          for (; declaration; declaration = declaration.parent) {
            if (hasExternalModuleSymbol(declaration)) {
              return getSymbolOfNode(declaration);
            }
          }
        }
      }
      function hasExternalModuleSymbol(declaration) {
        return ts.isAmbientModule(declaration) || (declaration.kind === 251 && ts.isExternalOrCommonJsModule(declaration));
      }
      function hasVisibleDeclarations(symbol) {
        var aliasesToMakeVisible;
        if (ts.forEach(symbol.declarations, function(declaration) {
          return !getIsDeclarationVisible(declaration);
        })) {
          return undefined;
        }
        return {
          accessibility: 0,
          aliasesToMakeVisible: aliasesToMakeVisible
        };
        function getIsDeclarationVisible(declaration) {
          if (!isDeclarationVisible(declaration)) {
            var anyImportSyntax = getAnyImportSyntax(declaration);
            if (anyImportSyntax && !(anyImportSyntax.flags & 2) && isDeclarationVisible(anyImportSyntax.parent)) {
              getNodeLinks(declaration).isVisible = true;
              if (aliasesToMakeVisible) {
                if (!ts.contains(aliasesToMakeVisible, anyImportSyntax)) {
                  aliasesToMakeVisible.push(anyImportSyntax);
                }
              } else {
                aliasesToMakeVisible = [anyImportSyntax];
              }
              return true;
            }
            return false;
          }
          return true;
        }
      }
      function isEntityNameVisible(entityName, enclosingDeclaration) {
        var meaning;
        if (entityName.parent.kind === 155) {
          meaning = 107455 | 1048576;
        } else if (entityName.kind === 136 || entityName.kind === 169 || entityName.parent.kind === 224) {
          meaning = 1536;
        } else {
          meaning = 793056;
        }
        var firstIdentifier = getFirstIdentifier(entityName);
        var symbol = resolveName(enclosingDeclaration, firstIdentifier.text, meaning, undefined, undefined);
        return (symbol && hasVisibleDeclarations(symbol)) || {
          accessibility: 1,
          errorSymbolName: ts.getTextOfNode(firstIdentifier),
          errorNode: firstIdentifier
        };
      }
      function writeKeyword(writer, kind) {
        writer.writeKeyword(ts.tokenToString(kind));
      }
      function writePunctuation(writer, kind) {
        writer.writePunctuation(ts.tokenToString(kind));
      }
      function writeSpace(writer) {
        writer.writeSpace(" ");
      }
      function symbolToString(symbol, enclosingDeclaration, meaning) {
        var writer = ts.getSingleLineStringWriter();
        getSymbolDisplayBuilder().buildSymbolDisplay(symbol, writer, enclosingDeclaration, meaning);
        var result = writer.string();
        ts.releaseStringWriter(writer);
        return result;
      }
      function signatureToString(signature, enclosingDeclaration, flags, kind) {
        var writer = ts.getSingleLineStringWriter();
        getSymbolDisplayBuilder().buildSignatureDisplay(signature, writer, enclosingDeclaration, flags, kind);
        var result = writer.string();
        ts.releaseStringWriter(writer);
        return result;
      }
      function typeToString(type, enclosingDeclaration, flags) {
        var writer = ts.getSingleLineStringWriter();
        getSymbolDisplayBuilder().buildTypeDisplay(type, writer, enclosingDeclaration, flags);
        var result = writer.string();
        ts.releaseStringWriter(writer);
        var maxLength = compilerOptions.noErrorTruncation || flags & 4 ? undefined : 100;
        if (maxLength && result.length >= maxLength) {
          result = result.substr(0, maxLength - "...".length) + "...";
        }
        return result;
      }
      function typePredicateToString(typePredicate, enclosingDeclaration, flags) {
        var writer = ts.getSingleLineStringWriter();
        getSymbolDisplayBuilder().buildTypePredicateDisplay(typePredicate, writer, enclosingDeclaration, flags);
        var result = writer.string();
        ts.releaseStringWriter(writer);
        return result;
      }
      function getTypeAliasForTypeLiteral(type) {
        if (type.symbol && type.symbol.flags & 2048) {
          var node = type.symbol.declarations[0].parent;
          while (node.kind === 161) {
            node = node.parent;
          }
          if (node.kind === 219) {
            return getSymbolOfNode(node);
          }
        }
        return undefined;
      }
      function isTopLevelInExternalModuleAugmentation(node) {
        return node && node.parent && node.parent.kind === 222 && ts.isExternalModuleAugmentation(node.parent.parent);
      }
      function getSymbolDisplayBuilder() {
        function getNameOfSymbol(symbol) {
          if (symbol.declarations && symbol.declarations.length) {
            var declaration = symbol.declarations[0];
            if (declaration.name) {
              return ts.declarationNameToString(declaration.name);
            }
            switch (declaration.kind) {
              case 189:
                return "(Anonymous class)";
              case 176:
              case 177:
                return "(Anonymous function)";
            }
          }
          return symbol.name;
        }
        function appendSymbolNameOnly(symbol, writer) {
          writer.writeSymbol(getNameOfSymbol(symbol), symbol);
        }
        function buildSymbolDisplay(symbol, writer, enclosingDeclaration, meaning, flags, typeFlags) {
          var parentSymbol;
          function appendParentTypeArgumentsAndSymbolName(symbol) {
            if (parentSymbol) {
              if (flags & 1) {
                if (symbol.flags & 16777216) {
                  buildDisplayForTypeArgumentsAndDelimiters(getTypeParametersOfClassOrInterface(parentSymbol), symbol.mapper, writer, enclosingDeclaration);
                } else {
                  buildTypeParameterDisplayFromSymbol(parentSymbol, writer, enclosingDeclaration);
                }
              }
              writePunctuation(writer, 21);
            }
            parentSymbol = symbol;
            appendSymbolNameOnly(symbol, writer);
          }
          writer.trackSymbol(symbol, enclosingDeclaration, meaning);
          function walkSymbol(symbol, meaning) {
            if (symbol) {
              var accessibleSymbolChain = getAccessibleSymbolChain(symbol, enclosingDeclaration, meaning, !!(flags & 2));
              if (!accessibleSymbolChain || needsQualification(accessibleSymbolChain[0], enclosingDeclaration, accessibleSymbolChain.length === 1 ? meaning : getQualifiedLeftMeaning(meaning))) {
                walkSymbol(getParentOfSymbol(accessibleSymbolChain ? accessibleSymbolChain[0] : symbol), getQualifiedLeftMeaning(meaning));
              }
              if (accessibleSymbolChain) {
                for (var _i = 0,
                    accessibleSymbolChain_1 = accessibleSymbolChain; _i < accessibleSymbolChain_1.length; _i++) {
                  var accessibleSymbol = accessibleSymbolChain_1[_i];
                  appendParentTypeArgumentsAndSymbolName(accessibleSymbol);
                }
              } else {
                if (!parentSymbol && ts.forEach(symbol.declarations, hasExternalModuleSymbol)) {
                  return;
                }
                if (symbol.flags & 2048 || symbol.flags & 4096) {
                  return;
                }
                appendParentTypeArgumentsAndSymbolName(symbol);
              }
            }
          }
          var isTypeParameter = symbol.flags & 262144;
          var typeFormatFlag = 128 & typeFlags;
          if (!isTypeParameter && (enclosingDeclaration || typeFormatFlag)) {
            walkSymbol(symbol, meaning);
            return;
          }
          return appendParentTypeArgumentsAndSymbolName(symbol);
        }
        function buildTypeDisplay(type, writer, enclosingDeclaration, globalFlags, symbolStack) {
          var globalFlagsToPass = globalFlags & 16;
          var inObjectTypeLiteral = false;
          return writeType(type, globalFlags);
          function writeType(type, flags) {
            if (type.flags & 16777343) {
              writer.writeKeyword(!(globalFlags & 16) && isTypeAny(type) ? "any" : type.intrinsicName);
            } else if (type.flags & 33554432) {
              if (inObjectTypeLiteral) {
                writer.reportInaccessibleThisError();
              }
              writer.writeKeyword("this");
            } else if (type.flags & 4096) {
              writeTypeReference(type, flags);
            } else if (type.flags & (1024 | 2048 | 128 | 512)) {
              buildSymbolDisplay(type.symbol, writer, enclosingDeclaration, 793056, 0, flags);
            } else if (type.flags & 8192) {
              writeTupleType(type);
            } else if (type.flags & 49152) {
              writeUnionOrIntersectionType(type, flags);
            } else if (type.flags & 65536) {
              writeAnonymousType(type, flags);
            } else if (type.flags & 256) {
              writer.writeStringLiteral("\"" + ts.escapeString(type.text) + "\"");
            } else {
              writePunctuation(writer, 15);
              writeSpace(writer);
              writePunctuation(writer, 22);
              writeSpace(writer);
              writePunctuation(writer, 16);
            }
          }
          function writeTypeList(types, delimiter) {
            for (var i = 0; i < types.length; i++) {
              if (i > 0) {
                if (delimiter !== 24) {
                  writeSpace(writer);
                }
                writePunctuation(writer, delimiter);
                writeSpace(writer);
              }
              writeType(types[i], delimiter === 24 ? 0 : 64);
            }
          }
          function writeSymbolTypeReference(symbol, typeArguments, pos, end, flags) {
            if (symbol.flags & 32 || !isReservedMemberName(symbol.name)) {
              buildSymbolDisplay(symbol, writer, enclosingDeclaration, 793056, 0, flags);
            }
            if (pos < end) {
              writePunctuation(writer, 25);
              writeType(typeArguments[pos], 0);
              pos++;
              while (pos < end) {
                writePunctuation(writer, 24);
                writeSpace(writer);
                writeType(typeArguments[pos], 0);
                pos++;
              }
              writePunctuation(writer, 27);
            }
          }
          function writeTypeReference(type, flags) {
            var typeArguments = type.typeArguments || emptyArray;
            if (type.target === globalArrayType && !(flags & 1)) {
              writeType(typeArguments[0], 64);
              writePunctuation(writer, 19);
              writePunctuation(writer, 20);
            } else {
              var outerTypeParameters = type.target.outerTypeParameters;
              var i = 0;
              if (outerTypeParameters) {
                var length_1 = outerTypeParameters.length;
                while (i < length_1) {
                  var start = i;
                  var parent_4 = getParentSymbolOfTypeParameter(outerTypeParameters[i]);
                  do {
                    i++;
                  } while (i < length_1 && getParentSymbolOfTypeParameter(outerTypeParameters[i]) === parent_4);
                  if (!ts.rangeEquals(outerTypeParameters, typeArguments, start, i)) {
                    writeSymbolTypeReference(parent_4, typeArguments, start, i, flags);
                    writePunctuation(writer, 21);
                  }
                }
              }
              var typeParameterCount = (type.target.typeParameters || emptyArray).length;
              writeSymbolTypeReference(type.symbol, typeArguments, i, typeParameterCount, flags);
            }
          }
          function writeTupleType(type) {
            writePunctuation(writer, 19);
            writeTypeList(type.elementTypes, 24);
            writePunctuation(writer, 20);
          }
          function writeUnionOrIntersectionType(type, flags) {
            if (flags & 64) {
              writePunctuation(writer, 17);
            }
            writeTypeList(type.types, type.flags & 16384 ? 47 : 46);
            if (flags & 64) {
              writePunctuation(writer, 18);
            }
          }
          function writeAnonymousType(type, flags) {
            var symbol = type.symbol;
            if (symbol) {
              if (symbol.flags & (32 | 384 | 512)) {
                writeTypeofSymbol(type, flags);
              } else if (shouldWriteTypeOfFunctionSymbol()) {
                writeTypeofSymbol(type, flags);
              } else if (ts.contains(symbolStack, symbol)) {
                var typeAlias = getTypeAliasForTypeLiteral(type);
                if (typeAlias) {
                  buildSymbolDisplay(typeAlias, writer, enclosingDeclaration, 793056, 0, flags);
                } else {
                  writeKeyword(writer, 117);
                }
              } else {
                if (!symbolStack) {
                  symbolStack = [];
                }
                symbolStack.push(symbol);
                writeLiteralType(type, flags);
                symbolStack.pop();
              }
            } else {
              writeLiteralType(type, flags);
            }
            function shouldWriteTypeOfFunctionSymbol() {
              var isStaticMethodSymbol = !!(symbol.flags & 8192 && ts.forEach(symbol.declarations, function(declaration) {
                return declaration.flags & 64;
              }));
              var isNonLocalFunctionSymbol = !!(symbol.flags & 16) && (symbol.parent || ts.forEach(symbol.declarations, function(declaration) {
                return declaration.parent.kind === 251 || declaration.parent.kind === 222;
              }));
              if (isStaticMethodSymbol || isNonLocalFunctionSymbol) {
                return !!(flags & 2) || (ts.contains(symbolStack, symbol));
              }
            }
          }
          function writeTypeofSymbol(type, typeFormatFlags) {
            writeKeyword(writer, 101);
            writeSpace(writer);
            buildSymbolDisplay(type.symbol, writer, enclosingDeclaration, 107455, 0, typeFormatFlags);
          }
          function getIndexerParameterName(type, indexKind, fallbackName) {
            var declaration = getIndexDeclarationOfSymbol(type.symbol, indexKind);
            if (!declaration) {
              return fallbackName;
            }
            ts.Debug.assert(declaration.parameters.length !== 0);
            return ts.declarationNameToString(declaration.parameters[0].name);
          }
          function writeLiteralType(type, flags) {
            var resolved = resolveStructuredTypeMembers(type);
            if (!resolved.properties.length && !resolved.stringIndexType && !resolved.numberIndexType) {
              if (!resolved.callSignatures.length && !resolved.constructSignatures.length) {
                writePunctuation(writer, 15);
                writePunctuation(writer, 16);
                return;
              }
              if (resolved.callSignatures.length === 1 && !resolved.constructSignatures.length) {
                if (flags & 64) {
                  writePunctuation(writer, 17);
                }
                buildSignatureDisplay(resolved.callSignatures[0], writer, enclosingDeclaration, globalFlagsToPass | 8, undefined, symbolStack);
                if (flags & 64) {
                  writePunctuation(writer, 18);
                }
                return;
              }
              if (resolved.constructSignatures.length === 1 && !resolved.callSignatures.length) {
                if (flags & 64) {
                  writePunctuation(writer, 17);
                }
                writeKeyword(writer, 92);
                writeSpace(writer);
                buildSignatureDisplay(resolved.constructSignatures[0], writer, enclosingDeclaration, globalFlagsToPass | 8, undefined, symbolStack);
                if (flags & 64) {
                  writePunctuation(writer, 18);
                }
                return;
              }
            }
            var saveInObjectTypeLiteral = inObjectTypeLiteral;
            inObjectTypeLiteral = true;
            writePunctuation(writer, 15);
            writer.writeLine();
            writer.increaseIndent();
            for (var _i = 0,
                _a = resolved.callSignatures; _i < _a.length; _i++) {
              var signature = _a[_i];
              buildSignatureDisplay(signature, writer, enclosingDeclaration, globalFlagsToPass, undefined, symbolStack);
              writePunctuation(writer, 23);
              writer.writeLine();
            }
            for (var _b = 0,
                _c = resolved.constructSignatures; _b < _c.length; _b++) {
              var signature = _c[_b];
              buildSignatureDisplay(signature, writer, enclosingDeclaration, globalFlagsToPass, 1, symbolStack);
              writePunctuation(writer, 23);
              writer.writeLine();
            }
            if (resolved.stringIndexType) {
              writePunctuation(writer, 19);
              writer.writeParameter(getIndexerParameterName(resolved, 0, "x"));
              writePunctuation(writer, 54);
              writeSpace(writer);
              writeKeyword(writer, 130);
              writePunctuation(writer, 20);
              writePunctuation(writer, 54);
              writeSpace(writer);
              writeType(resolved.stringIndexType, 0);
              writePunctuation(writer, 23);
              writer.writeLine();
            }
            if (resolved.numberIndexType) {
              writePunctuation(writer, 19);
              writer.writeParameter(getIndexerParameterName(resolved, 1, "x"));
              writePunctuation(writer, 54);
              writeSpace(writer);
              writeKeyword(writer, 128);
              writePunctuation(writer, 20);
              writePunctuation(writer, 54);
              writeSpace(writer);
              writeType(resolved.numberIndexType, 0);
              writePunctuation(writer, 23);
              writer.writeLine();
            }
            for (var _d = 0,
                _e = resolved.properties; _d < _e.length; _d++) {
              var p = _e[_d];
              var t = getTypeOfSymbol(p);
              if (p.flags & (16 | 8192) && !getPropertiesOfObjectType(t).length) {
                var signatures = getSignaturesOfType(t, 0);
                for (var _f = 0,
                    signatures_1 = signatures; _f < signatures_1.length; _f++) {
                  var signature = signatures_1[_f];
                  buildSymbolDisplay(p, writer);
                  if (p.flags & 536870912) {
                    writePunctuation(writer, 53);
                  }
                  buildSignatureDisplay(signature, writer, enclosingDeclaration, globalFlagsToPass, undefined, symbolStack);
                  writePunctuation(writer, 23);
                  writer.writeLine();
                }
              } else {
                buildSymbolDisplay(p, writer);
                if (p.flags & 536870912) {
                  writePunctuation(writer, 53);
                }
                writePunctuation(writer, 54);
                writeSpace(writer);
                writeType(t, 0);
                writePunctuation(writer, 23);
                writer.writeLine();
              }
            }
            writer.decreaseIndent();
            writePunctuation(writer, 16);
            inObjectTypeLiteral = saveInObjectTypeLiteral;
          }
        }
        function buildTypeParameterDisplayFromSymbol(symbol, writer, enclosingDeclaration, flags) {
          var targetSymbol = getTargetSymbol(symbol);
          if (targetSymbol.flags & 32 || targetSymbol.flags & 64 || targetSymbol.flags & 524288) {
            buildDisplayForTypeParametersAndDelimiters(getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(symbol), writer, enclosingDeclaration, flags);
          }
        }
        function buildTypeParameterDisplay(tp, writer, enclosingDeclaration, flags, symbolStack) {
          appendSymbolNameOnly(tp.symbol, writer);
          var constraint = getConstraintOfTypeParameter(tp);
          if (constraint) {
            writeSpace(writer);
            writeKeyword(writer, 83);
            writeSpace(writer);
            buildTypeDisplay(constraint, writer, enclosingDeclaration, flags, symbolStack);
          }
        }
        function buildParameterDisplay(p, writer, enclosingDeclaration, flags, symbolStack) {
          var parameterNode = p.valueDeclaration;
          if (ts.isRestParameter(parameterNode)) {
            writePunctuation(writer, 22);
          }
          appendSymbolNameOnly(p, writer);
          if (isOptionalParameter(parameterNode)) {
            writePunctuation(writer, 53);
          }
          writePunctuation(writer, 54);
          writeSpace(writer);
          buildTypeDisplay(getTypeOfSymbol(p), writer, enclosingDeclaration, flags, symbolStack);
        }
        function buildDisplayForTypeParametersAndDelimiters(typeParameters, writer, enclosingDeclaration, flags, symbolStack) {
          if (typeParameters && typeParameters.length) {
            writePunctuation(writer, 25);
            for (var i = 0; i < typeParameters.length; i++) {
              if (i > 0) {
                writePunctuation(writer, 24);
                writeSpace(writer);
              }
              buildTypeParameterDisplay(typeParameters[i], writer, enclosingDeclaration, flags, symbolStack);
            }
            writePunctuation(writer, 27);
          }
        }
        function buildDisplayForTypeArgumentsAndDelimiters(typeParameters, mapper, writer, enclosingDeclaration, flags, symbolStack) {
          if (typeParameters && typeParameters.length) {
            writePunctuation(writer, 25);
            for (var i = 0; i < typeParameters.length; i++) {
              if (i > 0) {
                writePunctuation(writer, 24);
                writeSpace(writer);
              }
              buildTypeDisplay(mapper(typeParameters[i]), writer, enclosingDeclaration, 0);
            }
            writePunctuation(writer, 27);
          }
        }
        function buildDisplayForParametersAndDelimiters(parameters, writer, enclosingDeclaration, flags, symbolStack) {
          writePunctuation(writer, 17);
          for (var i = 0; i < parameters.length; i++) {
            if (i > 0) {
              writePunctuation(writer, 24);
              writeSpace(writer);
            }
            buildParameterDisplay(parameters[i], writer, enclosingDeclaration, flags, symbolStack);
          }
          writePunctuation(writer, 18);
        }
        function buildTypePredicateDisplay(predicate, writer, enclosingDeclaration, flags, symbolStack) {
          if (ts.isIdentifierTypePredicate(predicate)) {
            writer.writeParameter(predicate.parameterName);
          } else {
            writeKeyword(writer, 97);
          }
          writeSpace(writer);
          writeKeyword(writer, 124);
          writeSpace(writer);
          buildTypeDisplay(predicate.type, writer, enclosingDeclaration, flags, symbolStack);
        }
        function buildReturnTypeDisplay(signature, writer, enclosingDeclaration, flags, symbolStack) {
          if (flags & 8) {
            writeSpace(writer);
            writePunctuation(writer, 34);
          } else {
            writePunctuation(writer, 54);
          }
          writeSpace(writer);
          if (signature.typePredicate) {
            buildTypePredicateDisplay(signature.typePredicate, writer, enclosingDeclaration, flags, symbolStack);
          } else {
            var returnType = getReturnTypeOfSignature(signature);
            buildTypeDisplay(returnType, writer, enclosingDeclaration, flags, symbolStack);
          }
        }
        function buildSignatureDisplay(signature, writer, enclosingDeclaration, flags, kind, symbolStack) {
          if (kind === 1) {
            writeKeyword(writer, 92);
            writeSpace(writer);
          }
          if (signature.target && (flags & 32)) {
            buildDisplayForTypeArgumentsAndDelimiters(signature.target.typeParameters, signature.mapper, writer, enclosingDeclaration);
          } else {
            buildDisplayForTypeParametersAndDelimiters(signature.typeParameters, writer, enclosingDeclaration, flags, symbolStack);
          }
          buildDisplayForParametersAndDelimiters(signature.parameters, writer, enclosingDeclaration, flags, symbolStack);
          buildReturnTypeDisplay(signature, writer, enclosingDeclaration, flags, symbolStack);
        }
        return _displayBuilder || (_displayBuilder = {
          buildSymbolDisplay: buildSymbolDisplay,
          buildTypeDisplay: buildTypeDisplay,
          buildTypeParameterDisplay: buildTypeParameterDisplay,
          buildTypePredicateDisplay: buildTypePredicateDisplay,
          buildParameterDisplay: buildParameterDisplay,
          buildDisplayForParametersAndDelimiters: buildDisplayForParametersAndDelimiters,
          buildDisplayForTypeParametersAndDelimiters: buildDisplayForTypeParametersAndDelimiters,
          buildTypeParameterDisplayFromSymbol: buildTypeParameterDisplayFromSymbol,
          buildSignatureDisplay: buildSignatureDisplay,
          buildReturnTypeDisplay: buildReturnTypeDisplay
        });
      }
      function isDeclarationVisible(node) {
        if (node) {
          var links = getNodeLinks(node);
          if (links.isVisible === undefined) {
            links.isVisible = !!determineIfDeclarationIsVisible();
          }
          return links.isVisible;
        }
        return false;
        function determineIfDeclarationIsVisible() {
          switch (node.kind) {
            case 166:
              return isDeclarationVisible(node.parent.parent);
            case 214:
              if (ts.isBindingPattern(node.name) && !node.name.elements.length) {
                return false;
              }
            case 221:
            case 217:
            case 218:
            case 219:
            case 216:
            case 220:
            case 224:
              if (ts.isExternalModuleAugmentation(node)) {
                return true;
              }
              var parent_5 = getDeclarationContainer(node);
              if (!(ts.getCombinedNodeFlags(node) & 2) && !(node.kind !== 224 && parent_5.kind !== 251 && ts.isInAmbientContext(parent_5))) {
                return isGlobalSourceFile(parent_5);
              }
              return isDeclarationVisible(parent_5);
            case 142:
            case 141:
            case 146:
            case 147:
            case 144:
            case 143:
              if (node.flags & (16 | 32)) {
                return false;
              }
            case 145:
            case 149:
            case 148:
            case 150:
            case 139:
            case 222:
            case 153:
            case 154:
            case 156:
            case 152:
            case 157:
            case 158:
            case 159:
            case 160:
            case 161:
              return isDeclarationVisible(node.parent);
            case 226:
            case 227:
            case 229:
              return false;
            case 138:
            case 251:
              return true;
            case 230:
              return false;
            default:
              ts.Debug.fail("isDeclarationVisible unknown: SyntaxKind: " + node.kind);
          }
        }
      }
      function collectLinkedAliases(node) {
        var exportSymbol;
        if (node.parent && node.parent.kind === 230) {
          exportSymbol = resolveName(node.parent, node.text, 107455 | 793056 | 1536 | 8388608, ts.Diagnostics.Cannot_find_name_0, node);
        } else if (node.parent.kind === 233) {
          var exportSpecifier = node.parent;
          exportSymbol = exportSpecifier.parent.parent.moduleSpecifier ? getExternalModuleMember(exportSpecifier.parent.parent, exportSpecifier) : resolveEntityName(exportSpecifier.propertyName || exportSpecifier.name, 107455 | 793056 | 1536 | 8388608);
        }
        var result = [];
        if (exportSymbol) {
          buildVisibleNodeList(exportSymbol.declarations);
        }
        return result;
        function buildVisibleNodeList(declarations) {
          ts.forEach(declarations, function(declaration) {
            getNodeLinks(declaration).isVisible = true;
            var resultNode = getAnyImportSyntax(declaration) || declaration;
            if (!ts.contains(result, resultNode)) {
              result.push(resultNode);
            }
            if (ts.isInternalModuleImportEqualsDeclaration(declaration)) {
              var internalModuleReference = declaration.moduleReference;
              var firstIdentifier = getFirstIdentifier(internalModuleReference);
              var importSymbol = resolveName(declaration, firstIdentifier.text, 107455 | 793056 | 1536, ts.Diagnostics.Cannot_find_name_0, firstIdentifier);
              if (importSymbol) {
                buildVisibleNodeList(importSymbol.declarations);
              }
            }
          });
        }
      }
      function pushTypeResolution(target, propertyName) {
        var resolutionCycleStartIndex = findResolutionCycleStartIndex(target, propertyName);
        if (resolutionCycleStartIndex >= 0) {
          var length_2 = resolutionTargets.length;
          for (var i = resolutionCycleStartIndex; i < length_2; i++) {
            resolutionResults[i] = false;
          }
          return false;
        }
        resolutionTargets.push(target);
        resolutionResults.push(true);
        resolutionPropertyNames.push(propertyName);
        return true;
      }
      function findResolutionCycleStartIndex(target, propertyName) {
        for (var i = resolutionTargets.length - 1; i >= 0; i--) {
          if (hasType(resolutionTargets[i], resolutionPropertyNames[i])) {
            return -1;
          }
          if (resolutionTargets[i] === target && resolutionPropertyNames[i] === propertyName) {
            return i;
          }
        }
        return -1;
      }
      function hasType(target, propertyName) {
        if (propertyName === 0) {
          return getSymbolLinks(target).type;
        }
        if (propertyName === 2) {
          return getSymbolLinks(target).declaredType;
        }
        if (propertyName === 1) {
          ts.Debug.assert(!!(target.flags & 1024));
          return target.resolvedBaseConstructorType;
        }
        if (propertyName === 3) {
          return target.resolvedReturnType;
        }
        ts.Debug.fail("Unhandled TypeSystemPropertyName " + propertyName);
      }
      function popTypeResolution() {
        resolutionTargets.pop();
        resolutionPropertyNames.pop();
        return resolutionResults.pop();
      }
      function getDeclarationContainer(node) {
        node = ts.getRootDeclaration(node);
        while (node) {
          switch (node.kind) {
            case 214:
            case 215:
            case 229:
            case 228:
            case 227:
            case 226:
              node = node.parent;
              break;
            default:
              return node.parent;
          }
        }
      }
      function getTypeOfPrototypeProperty(prototype) {
        var classType = getDeclaredTypeOfSymbol(getParentOfSymbol(prototype));
        return classType.typeParameters ? createTypeReference(classType, ts.map(classType.typeParameters, function(_) {
          return anyType;
        })) : classType;
      }
      function getTypeOfPropertyOfType(type, name) {
        var prop = getPropertyOfType(type, name);
        return prop ? getTypeOfSymbol(prop) : undefined;
      }
      function isTypeAny(type) {
        return type && (type.flags & 1) !== 0;
      }
      function getTypeForBindingElementParent(node) {
        var symbol = getSymbolOfNode(node);
        return symbol && getSymbolLinks(symbol).type || getTypeForVariableLikeDeclaration(node);
      }
      function getTextOfPropertyName(name) {
        switch (name.kind) {
          case 69:
            return name.text;
          case 9:
          case 8:
            return name.text;
          case 137:
            if (ts.isStringOrNumericLiteral(name.expression.kind)) {
              return name.expression.text;
            }
        }
        return undefined;
      }
      function isComputedNonLiteralName(name) {
        return name.kind === 137 && !ts.isStringOrNumericLiteral(name.expression.kind);
      }
      function getTypeForBindingElement(declaration) {
        var pattern = declaration.parent;
        var parentType = getTypeForBindingElementParent(pattern.parent);
        if (parentType === unknownType) {
          return unknownType;
        }
        if (!parentType || isTypeAny(parentType)) {
          if (declaration.initializer) {
            return checkExpressionCached(declaration.initializer);
          }
          return parentType;
        }
        var type;
        if (pattern.kind === 164) {
          var name_10 = declaration.propertyName || declaration.name;
          if (isComputedNonLiteralName(name_10)) {
            return anyType;
          }
          var text = getTextOfPropertyName(name_10);
          type = getTypeOfPropertyOfType(parentType, text) || isNumericLiteralName(text) && getIndexTypeOfType(parentType, 1) || getIndexTypeOfType(parentType, 0);
          if (!type) {
            error(name_10, ts.Diagnostics.Type_0_has_no_property_1_and_no_string_index_signature, typeToString(parentType), ts.declarationNameToString(name_10));
            return unknownType;
          }
        } else {
          var elementType = checkIteratedTypeOrElementType(parentType, pattern, false);
          if (!declaration.dotDotDotToken) {
            var propName = "" + ts.indexOf(pattern.elements, declaration);
            type = isTupleLikeType(parentType) ? getTypeOfPropertyOfType(parentType, propName) : elementType;
            if (!type) {
              if (isTupleType(parentType)) {
                error(declaration, ts.Diagnostics.Tuple_type_0_with_length_1_cannot_be_assigned_to_tuple_with_length_2, typeToString(parentType), parentType.elementTypes.length, pattern.elements.length);
              } else {
                error(declaration, ts.Diagnostics.Type_0_has_no_property_1, typeToString(parentType), propName);
              }
              return unknownType;
            }
          } else {
            type = createArrayType(elementType);
          }
        }
        return type;
      }
      function getTypeForVariableLikeDeclarationFromJSDocComment(declaration) {
        var jsDocType = getJSDocTypeForVariableLikeDeclarationFromJSDocComment(declaration);
        if (jsDocType) {
          return getTypeFromTypeNode(jsDocType);
        }
      }
      function getJSDocTypeForVariableLikeDeclarationFromJSDocComment(declaration) {
        var typeTag = ts.getJSDocTypeTag(declaration);
        if (typeTag && typeTag.typeExpression) {
          return typeTag.typeExpression.type;
        }
        if (declaration.kind === 214 && declaration.parent.kind === 215 && declaration.parent.parent.kind === 196) {
          var annotation = ts.getJSDocTypeTag(declaration.parent.parent);
          if (annotation && annotation.typeExpression) {
            return annotation.typeExpression.type;
          }
        } else if (declaration.kind === 139) {
          var paramTag = ts.getCorrespondingJSDocParameterTag(declaration);
          if (paramTag && paramTag.typeExpression) {
            return paramTag.typeExpression.type;
          }
        }
        return undefined;
      }
      function getTypeForVariableLikeDeclaration(declaration) {
        if (declaration.parserContextFlags & 32) {
          var type = getTypeForVariableLikeDeclarationFromJSDocComment(declaration);
          if (type && type !== unknownType) {
            return type;
          }
        }
        if (declaration.parent.parent.kind === 203) {
          return stringType;
        }
        if (declaration.parent.parent.kind === 204) {
          return checkRightHandSideOfForOf(declaration.parent.parent.expression) || anyType;
        }
        if (ts.isBindingPattern(declaration.parent)) {
          return getTypeForBindingElement(declaration);
        }
        if (declaration.type) {
          return getTypeFromTypeNode(declaration.type);
        }
        if (declaration.kind === 139) {
          var func = declaration.parent;
          if (func.kind === 147 && !ts.hasDynamicName(func)) {
            var getter = ts.getDeclarationOfKind(declaration.parent.symbol, 146);
            if (getter) {
              return getReturnTypeOfSignature(getSignatureFromDeclaration(getter));
            }
          }
          var type = getContextuallyTypedParameterType(declaration);
          if (type) {
            return type;
          }
        }
        if (declaration.initializer) {
          return checkExpressionCached(declaration.initializer);
        }
        if (declaration.kind === 249) {
          return checkIdentifier(declaration.name);
        }
        if (ts.isBindingPattern(declaration.name)) {
          return getTypeFromBindingPattern(declaration.name, false);
        }
        return undefined;
      }
      function getTypeFromBindingElement(element, includePatternInType) {
        if (element.initializer) {
          return getWidenedType(checkExpressionCached(element.initializer));
        }
        if (ts.isBindingPattern(element.name)) {
          return getTypeFromBindingPattern(element.name, includePatternInType);
        }
        return anyType;
      }
      function getTypeFromObjectBindingPattern(pattern, includePatternInType) {
        var members = {};
        var hasComputedProperties = false;
        ts.forEach(pattern.elements, function(e) {
          var name = e.propertyName || e.name;
          if (isComputedNonLiteralName(name)) {
            hasComputedProperties = true;
            return;
          }
          var text = getTextOfPropertyName(name);
          var flags = 4 | 67108864 | (e.initializer ? 536870912 : 0);
          var symbol = createSymbol(flags, text);
          symbol.type = getTypeFromBindingElement(e, includePatternInType);
          symbol.bindingElement = e;
          members[symbol.name] = symbol;
        });
        var result = createAnonymousType(undefined, members, emptyArray, emptyArray, undefined, undefined);
        if (includePatternInType) {
          result.pattern = pattern;
        }
        if (hasComputedProperties) {
          result.flags |= 67108864;
        }
        return result;
      }
      function getTypeFromArrayBindingPattern(pattern, includePatternInType) {
        var elements = pattern.elements;
        if (elements.length === 0 || elements[elements.length - 1].dotDotDotToken) {
          return languageVersion >= 2 ? createIterableType(anyType) : anyArrayType;
        }
        var elementTypes = ts.map(elements, function(e) {
          return e.kind === 190 ? anyType : getTypeFromBindingElement(e, includePatternInType);
        });
        if (includePatternInType) {
          var result = createNewTupleType(elementTypes);
          result.pattern = pattern;
          return result;
        }
        return createTupleType(elementTypes);
      }
      function getTypeFromBindingPattern(pattern, includePatternInType) {
        return pattern.kind === 164 ? getTypeFromObjectBindingPattern(pattern, includePatternInType) : getTypeFromArrayBindingPattern(pattern, includePatternInType);
      }
      function getWidenedTypeForVariableLikeDeclaration(declaration, reportErrors) {
        var type = getTypeForVariableLikeDeclaration(declaration);
        if (type) {
          if (reportErrors) {
            reportErrorsFromWidening(declaration, type);
          }
          if (declaration.kind === 248) {
            return type;
          }
          return getWidenedType(type);
        }
        type = declaration.dotDotDotToken ? anyArrayType : anyType;
        if (reportErrors && compilerOptions.noImplicitAny) {
          var root = ts.getRootDeclaration(declaration);
          if (!isPrivateWithinAmbient(root) && !(root.kind === 139 && isPrivateWithinAmbient(root.parent))) {
            reportImplicitAnyError(declaration, type);
          }
        }
        return type;
      }
      function getTypeOfVariableOrParameterOrProperty(symbol) {
        var links = getSymbolLinks(symbol);
        if (!links.type) {
          if (symbol.flags & 134217728) {
            return links.type = getTypeOfPrototypeProperty(symbol);
          }
          var declaration = symbol.valueDeclaration;
          if (declaration.parent.kind === 247) {
            return links.type = anyType;
          }
          if (declaration.kind === 230) {
            return links.type = checkExpression(declaration.expression);
          }
          if (declaration.kind === 184) {
            return links.type = getUnionType(ts.map(symbol.declarations, function(decl) {
              return checkExpressionCached(decl.right);
            }));
          }
          if (declaration.kind === 169) {
            if (declaration.parent.kind === 184) {
              return links.type = checkExpressionCached(declaration.parent.right);
            }
          }
          if (!pushTypeResolution(symbol, 0)) {
            return unknownType;
          }
          var type = getWidenedTypeForVariableLikeDeclaration(declaration, true);
          if (!popTypeResolution()) {
            if (symbol.valueDeclaration.type) {
              type = unknownType;
              error(symbol.valueDeclaration, ts.Diagnostics._0_is_referenced_directly_or_indirectly_in_its_own_type_annotation, symbolToString(symbol));
            } else {
              type = anyType;
              if (compilerOptions.noImplicitAny) {
                error(symbol.valueDeclaration, ts.Diagnostics._0_implicitly_has_type_any_because_it_does_not_have_a_type_annotation_and_is_referenced_directly_or_indirectly_in_its_own_initializer, symbolToString(symbol));
              }
            }
          }
          links.type = type;
        }
        return links.type;
      }
      function getAnnotatedAccessorType(accessor) {
        if (accessor) {
          if (accessor.kind === 146) {
            return accessor.type && getTypeFromTypeNode(accessor.type);
          } else {
            var setterTypeAnnotation = ts.getSetAccessorTypeAnnotationNode(accessor);
            return setterTypeAnnotation && getTypeFromTypeNode(setterTypeAnnotation);
          }
        }
        return undefined;
      }
      function getTypeOfAccessors(symbol) {
        var links = getSymbolLinks(symbol);
        if (!links.type) {
          if (!pushTypeResolution(symbol, 0)) {
            return unknownType;
          }
          var getter = ts.getDeclarationOfKind(symbol, 146);
          var setter = ts.getDeclarationOfKind(symbol, 147);
          var type = void 0;
          var getterReturnType = getAnnotatedAccessorType(getter);
          if (getterReturnType) {
            type = getterReturnType;
          } else {
            var setterParameterType = getAnnotatedAccessorType(setter);
            if (setterParameterType) {
              type = setterParameterType;
            } else {
              if (getter && getter.body) {
                type = getReturnTypeFromBody(getter);
              } else {
                if (compilerOptions.noImplicitAny) {
                  error(setter, ts.Diagnostics.Property_0_implicitly_has_type_any_because_its_set_accessor_lacks_a_type_annotation, symbolToString(symbol));
                }
                type = anyType;
              }
            }
          }
          if (!popTypeResolution()) {
            type = anyType;
            if (compilerOptions.noImplicitAny) {
              var getter_1 = ts.getDeclarationOfKind(symbol, 146);
              error(getter_1, ts.Diagnostics._0_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions, symbolToString(symbol));
            }
          }
          links.type = type;
        }
        return links.type;
      }
      function getTypeOfFuncClassEnumModule(symbol) {
        var links = getSymbolLinks(symbol);
        if (!links.type) {
          links.type = createObjectType(65536, symbol);
        }
        return links.type;
      }
      function getTypeOfEnumMember(symbol) {
        var links = getSymbolLinks(symbol);
        if (!links.type) {
          links.type = getDeclaredTypeOfEnum(getParentOfSymbol(symbol));
        }
        return links.type;
      }
      function getTypeOfAlias(symbol) {
        var links = getSymbolLinks(symbol);
        if (!links.type) {
          var targetSymbol = resolveAlias(symbol);
          links.type = targetSymbol.flags & 107455 ? getTypeOfSymbol(targetSymbol) : unknownType;
        }
        return links.type;
      }
      function getTypeOfInstantiatedSymbol(symbol) {
        var links = getSymbolLinks(symbol);
        if (!links.type) {
          links.type = instantiateType(getTypeOfSymbol(links.target), links.mapper);
        }
        return links.type;
      }
      function getTypeOfSymbol(symbol) {
        if (symbol.flags & 16777216) {
          return getTypeOfInstantiatedSymbol(symbol);
        }
        if (symbol.flags & (3 | 4)) {
          return getTypeOfVariableOrParameterOrProperty(symbol);
        }
        if (symbol.flags & (16 | 8192 | 32 | 384 | 512)) {
          return getTypeOfFuncClassEnumModule(symbol);
        }
        if (symbol.flags & 8) {
          return getTypeOfEnumMember(symbol);
        }
        if (symbol.flags & 98304) {
          return getTypeOfAccessors(symbol);
        }
        if (symbol.flags & 8388608) {
          return getTypeOfAlias(symbol);
        }
        return unknownType;
      }
      function getTargetType(type) {
        return type.flags & 4096 ? type.target : type;
      }
      function hasBaseType(type, checkBase) {
        return check(type);
        function check(type) {
          var target = getTargetType(type);
          return target === checkBase || ts.forEach(getBaseTypes(target), check);
        }
      }
      function appendTypeParameters(typeParameters, declarations) {
        for (var _i = 0,
            declarations_2 = declarations; _i < declarations_2.length; _i++) {
          var declaration = declarations_2[_i];
          var tp = getDeclaredTypeOfTypeParameter(getSymbolOfNode(declaration));
          if (!typeParameters) {
            typeParameters = [tp];
          } else if (!ts.contains(typeParameters, tp)) {
            typeParameters.push(tp);
          }
        }
        return typeParameters;
      }
      function appendOuterTypeParameters(typeParameters, node) {
        while (true) {
          node = node.parent;
          if (!node) {
            return typeParameters;
          }
          if (node.kind === 217 || node.kind === 189 || node.kind === 216 || node.kind === 176 || node.kind === 144 || node.kind === 177) {
            var declarations = node.typeParameters;
            if (declarations) {
              return appendTypeParameters(appendOuterTypeParameters(typeParameters, node), declarations);
            }
          }
        }
      }
      function getOuterTypeParametersOfClassOrInterface(symbol) {
        var declaration = symbol.flags & 32 ? symbol.valueDeclaration : ts.getDeclarationOfKind(symbol, 218);
        return appendOuterTypeParameters(undefined, declaration);
      }
      function getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(symbol) {
        var result;
        for (var _i = 0,
            _a = symbol.declarations; _i < _a.length; _i++) {
          var node = _a[_i];
          if (node.kind === 218 || node.kind === 217 || node.kind === 189 || node.kind === 219) {
            var declaration = node;
            if (declaration.typeParameters) {
              result = appendTypeParameters(result, declaration.typeParameters);
            }
          }
        }
        return result;
      }
      function getTypeParametersOfClassOrInterface(symbol) {
        return ts.concatenate(getOuterTypeParametersOfClassOrInterface(symbol), getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(symbol));
      }
      function isConstructorType(type) {
        return type.flags & 80896 && getSignaturesOfType(type, 1).length > 0;
      }
      function getBaseTypeNodeOfClass(type) {
        return ts.getClassExtendsHeritageClauseElement(type.symbol.valueDeclaration);
      }
      function getConstructorsForTypeArguments(type, typeArgumentNodes) {
        var typeArgCount = typeArgumentNodes ? typeArgumentNodes.length : 0;
        return ts.filter(getSignaturesOfType(type, 1), function(sig) {
          return (sig.typeParameters ? sig.typeParameters.length : 0) === typeArgCount;
        });
      }
      function getInstantiatedConstructorsForTypeArguments(type, typeArgumentNodes) {
        var signatures = getConstructorsForTypeArguments(type, typeArgumentNodes);
        if (typeArgumentNodes) {
          var typeArguments_1 = ts.map(typeArgumentNodes, getTypeFromTypeNode);
          signatures = ts.map(signatures, function(sig) {
            return getSignatureInstantiation(sig, typeArguments_1);
          });
        }
        return signatures;
      }
      function getBaseConstructorTypeOfClass(type) {
        if (!type.resolvedBaseConstructorType) {
          var baseTypeNode = getBaseTypeNodeOfClass(type);
          if (!baseTypeNode) {
            return type.resolvedBaseConstructorType = undefinedType;
          }
          if (!pushTypeResolution(type, 1)) {
            return unknownType;
          }
          var baseConstructorType = checkExpression(baseTypeNode.expression);
          if (baseConstructorType.flags & 80896) {
            resolveStructuredTypeMembers(baseConstructorType);
          }
          if (!popTypeResolution()) {
            error(type.symbol.valueDeclaration, ts.Diagnostics._0_is_referenced_directly_or_indirectly_in_its_own_base_expression, symbolToString(type.symbol));
            return type.resolvedBaseConstructorType = unknownType;
          }
          if (baseConstructorType !== unknownType && baseConstructorType !== nullType && !isConstructorType(baseConstructorType)) {
            error(baseTypeNode.expression, ts.Diagnostics.Type_0_is_not_a_constructor_function_type, typeToString(baseConstructorType));
            return type.resolvedBaseConstructorType = unknownType;
          }
          type.resolvedBaseConstructorType = baseConstructorType;
        }
        return type.resolvedBaseConstructorType;
      }
      function getBaseTypes(type) {
        var isClass = type.symbol.flags & 32;
        var isInterface = type.symbol.flags & 64;
        if (!type.resolvedBaseTypes) {
          if (!isClass && !isInterface) {
            ts.Debug.fail("type must be class or interface");
          }
          if (isClass) {
            resolveBaseTypesOfClass(type);
          }
          if (isInterface) {
            resolveBaseTypesOfInterface(type);
          }
        }
        return type.resolvedBaseTypes;
      }
      function resolveBaseTypesOfClass(type) {
        type.resolvedBaseTypes = type.resolvedBaseTypes || emptyArray;
        var baseConstructorType = getBaseConstructorTypeOfClass(type);
        if (!(baseConstructorType.flags & 80896)) {
          return;
        }
        var baseTypeNode = getBaseTypeNodeOfClass(type);
        var baseType;
        var originalBaseType = baseConstructorType && baseConstructorType.symbol ? getDeclaredTypeOfSymbol(baseConstructorType.symbol) : undefined;
        if (baseConstructorType.symbol && baseConstructorType.symbol.flags & 32 && areAllOuterTypeParametersApplied(originalBaseType)) {
          baseType = getTypeFromClassOrInterfaceReference(baseTypeNode, baseConstructorType.symbol);
        } else {
          var constructors = getInstantiatedConstructorsForTypeArguments(baseConstructorType, baseTypeNode.typeArguments);
          if (!constructors.length) {
            error(baseTypeNode.expression, ts.Diagnostics.No_base_constructor_has_the_specified_number_of_type_arguments);
            return;
          }
          baseType = getReturnTypeOfSignature(constructors[0]);
        }
        if (baseType === unknownType) {
          return;
        }
        if (!(getTargetType(baseType).flags & (1024 | 2048))) {
          error(baseTypeNode.expression, ts.Diagnostics.Base_constructor_return_type_0_is_not_a_class_or_interface_type, typeToString(baseType));
          return;
        }
        if (type === baseType || hasBaseType(baseType, type)) {
          error(type.symbol.valueDeclaration, ts.Diagnostics.Type_0_recursively_references_itself_as_a_base_type, typeToString(type, undefined, 1));
          return;
        }
        if (type.resolvedBaseTypes === emptyArray) {
          type.resolvedBaseTypes = [baseType];
        } else {
          type.resolvedBaseTypes.push(baseType);
        }
      }
      function areAllOuterTypeParametersApplied(type) {
        var outerTypeParameters = type.outerTypeParameters;
        if (outerTypeParameters) {
          var last = outerTypeParameters.length - 1;
          var typeArguments = type.typeArguments;
          return outerTypeParameters[last].symbol !== typeArguments[last].symbol;
        }
        return true;
      }
      function resolveBaseTypesOfInterface(type) {
        type.resolvedBaseTypes = type.resolvedBaseTypes || emptyArray;
        for (var _i = 0,
            _a = type.symbol.declarations; _i < _a.length; _i++) {
          var declaration = _a[_i];
          if (declaration.kind === 218 && ts.getInterfaceBaseTypeNodes(declaration)) {
            for (var _b = 0,
                _c = ts.getInterfaceBaseTypeNodes(declaration); _b < _c.length; _b++) {
              var node = _c[_b];
              var baseType = getTypeFromTypeNode(node);
              if (baseType !== unknownType) {
                if (getTargetType(baseType).flags & (1024 | 2048)) {
                  if (type !== baseType && !hasBaseType(baseType, type)) {
                    if (type.resolvedBaseTypes === emptyArray) {
                      type.resolvedBaseTypes = [baseType];
                    } else {
                      type.resolvedBaseTypes.push(baseType);
                    }
                  } else {
                    error(declaration, ts.Diagnostics.Type_0_recursively_references_itself_as_a_base_type, typeToString(type, undefined, 1));
                  }
                } else {
                  error(node, ts.Diagnostics.An_interface_may_only_extend_a_class_or_another_interface);
                }
              }
            }
          }
        }
      }
      function isIndependentInterface(symbol) {
        for (var _i = 0,
            _a = symbol.declarations; _i < _a.length; _i++) {
          var declaration = _a[_i];
          if (declaration.kind === 218) {
            if (declaration.flags & 262144) {
              return false;
            }
            var baseTypeNodes = ts.getInterfaceBaseTypeNodes(declaration);
            if (baseTypeNodes) {
              for (var _b = 0,
                  baseTypeNodes_1 = baseTypeNodes; _b < baseTypeNodes_1.length; _b++) {
                var node = baseTypeNodes_1[_b];
                if (ts.isSupportedExpressionWithTypeArguments(node)) {
                  var baseSymbol = resolveEntityName(node.expression, 793056, true);
                  if (!baseSymbol || !(baseSymbol.flags & 64) || getDeclaredTypeOfClassOrInterface(baseSymbol).thisType) {
                    return false;
                  }
                }
              }
            }
          }
        }
        return true;
      }
      function getDeclaredTypeOfClassOrInterface(symbol) {
        var links = getSymbolLinks(symbol);
        if (!links.declaredType) {
          var kind = symbol.flags & 32 ? 1024 : 2048;
          var type = links.declaredType = createObjectType(kind, symbol);
          var outerTypeParameters = getOuterTypeParametersOfClassOrInterface(symbol);
          var localTypeParameters = getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(symbol);
          if (outerTypeParameters || localTypeParameters || kind === 1024 || !isIndependentInterface(symbol)) {
            type.flags |= 4096;
            type.typeParameters = ts.concatenate(outerTypeParameters, localTypeParameters);
            type.outerTypeParameters = outerTypeParameters;
            type.localTypeParameters = localTypeParameters;
            type.instantiations = {};
            type.instantiations[getTypeListId(type.typeParameters)] = type;
            type.target = type;
            type.typeArguments = type.typeParameters;
            type.thisType = createType(512 | 33554432);
            type.thisType.symbol = symbol;
            type.thisType.constraint = type;
          }
        }
        return links.declaredType;
      }
      function getDeclaredTypeOfTypeAlias(symbol) {
        var links = getSymbolLinks(symbol);
        if (!links.declaredType) {
          if (!pushTypeResolution(symbol, 2)) {
            return unknownType;
          }
          var declaration = ts.getDeclarationOfKind(symbol, 219);
          var type = getTypeFromTypeNode(declaration.type);
          if (popTypeResolution()) {
            links.typeParameters = getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(symbol);
            if (links.typeParameters) {
              links.instantiations = {};
              links.instantiations[getTypeListId(links.typeParameters)] = type;
            }
          } else {
            type = unknownType;
            error(declaration.name, ts.Diagnostics.Type_alias_0_circularly_references_itself, symbolToString(symbol));
          }
          links.declaredType = type;
        }
        return links.declaredType;
      }
      function getDeclaredTypeOfEnum(symbol) {
        var links = getSymbolLinks(symbol);
        if (!links.declaredType) {
          var type = createType(128);
          type.symbol = symbol;
          links.declaredType = type;
        }
        return links.declaredType;
      }
      function getDeclaredTypeOfTypeParameter(symbol) {
        var links = getSymbolLinks(symbol);
        if (!links.declaredType) {
          var type = createType(512);
          type.symbol = symbol;
          if (!ts.getDeclarationOfKind(symbol, 138).constraint) {
            type.constraint = noConstraintType;
          }
          links.declaredType = type;
        }
        return links.declaredType;
      }
      function getDeclaredTypeOfAlias(symbol) {
        var links = getSymbolLinks(symbol);
        if (!links.declaredType) {
          links.declaredType = getDeclaredTypeOfSymbol(resolveAlias(symbol));
        }
        return links.declaredType;
      }
      function getDeclaredTypeOfSymbol(symbol) {
        ts.Debug.assert((symbol.flags & 16777216) === 0);
        if (symbol.flags & (32 | 64)) {
          return getDeclaredTypeOfClassOrInterface(symbol);
        }
        if (symbol.flags & 524288) {
          return getDeclaredTypeOfTypeAlias(symbol);
        }
        if (symbol.flags & 384) {
          return getDeclaredTypeOfEnum(symbol);
        }
        if (symbol.flags & 262144) {
          return getDeclaredTypeOfTypeParameter(symbol);
        }
        if (symbol.flags & 8388608) {
          return getDeclaredTypeOfAlias(symbol);
        }
        return unknownType;
      }
      function isIndependentTypeReference(node) {
        if (node.typeArguments) {
          for (var _i = 0,
              _a = node.typeArguments; _i < _a.length; _i++) {
            var typeNode = _a[_i];
            if (!isIndependentType(typeNode)) {
              return false;
            }
          }
        }
        return true;
      }
      function isIndependentType(node) {
        switch (node.kind) {
          case 117:
          case 130:
          case 128:
          case 120:
          case 131:
          case 103:
          case 163:
            return true;
          case 157:
            return isIndependentType(node.elementType);
          case 152:
            return isIndependentTypeReference(node);
        }
        return false;
      }
      function isIndependentVariableLikeDeclaration(node) {
        return node.type && isIndependentType(node.type) || !node.type && !node.initializer;
      }
      function isIndependentFunctionLikeDeclaration(node) {
        if (node.kind !== 145 && (!node.type || !isIndependentType(node.type))) {
          return false;
        }
        for (var _i = 0,
            _a = node.parameters; _i < _a.length; _i++) {
          var parameter = _a[_i];
          if (!isIndependentVariableLikeDeclaration(parameter)) {
            return false;
          }
        }
        return true;
      }
      function isIndependentMember(symbol) {
        if (symbol.declarations && symbol.declarations.length === 1) {
          var declaration = symbol.declarations[0];
          if (declaration) {
            switch (declaration.kind) {
              case 142:
              case 141:
                return isIndependentVariableLikeDeclaration(declaration);
              case 144:
              case 143:
              case 145:
                return isIndependentFunctionLikeDeclaration(declaration);
            }
          }
        }
        return false;
      }
      function createSymbolTable(symbols) {
        var result = {};
        for (var _i = 0,
            symbols_1 = symbols; _i < symbols_1.length; _i++) {
          var symbol = symbols_1[_i];
          result[symbol.name] = symbol;
        }
        return result;
      }
      function createInstantiatedSymbolTable(symbols, mapper, mappingThisOnly) {
        var result = {};
        for (var _i = 0,
            symbols_2 = symbols; _i < symbols_2.length; _i++) {
          var symbol = symbols_2[_i];
          result[symbol.name] = mappingThisOnly && isIndependentMember(symbol) ? symbol : instantiateSymbol(symbol, mapper);
        }
        return result;
      }
      function addInheritedMembers(symbols, baseSymbols) {
        for (var _i = 0,
            baseSymbols_1 = baseSymbols; _i < baseSymbols_1.length; _i++) {
          var s = baseSymbols_1[_i];
          if (!ts.hasProperty(symbols, s.name)) {
            symbols[s.name] = s;
          }
        }
      }
      function resolveDeclaredMembers(type) {
        if (!type.declaredProperties) {
          var symbol = type.symbol;
          type.declaredProperties = getNamedMembers(symbol.members);
          type.declaredCallSignatures = getSignaturesOfSymbol(symbol.members["__call"]);
          type.declaredConstructSignatures = getSignaturesOfSymbol(symbol.members["__new"]);
          type.declaredStringIndexType = getIndexTypeOfSymbol(symbol, 0);
          type.declaredNumberIndexType = getIndexTypeOfSymbol(symbol, 1);
        }
        return type;
      }
      function getTypeWithThisArgument(type, thisArgument) {
        if (type.flags & 4096) {
          return createTypeReference(type.target, ts.concatenate(type.typeArguments, [thisArgument || type.target.thisType]));
        }
        return type;
      }
      function resolveObjectTypeMembers(type, source, typeParameters, typeArguments) {
        var mapper = identityMapper;
        var members = source.symbol.members;
        var callSignatures = source.declaredCallSignatures;
        var constructSignatures = source.declaredConstructSignatures;
        var stringIndexType = source.declaredStringIndexType;
        var numberIndexType = source.declaredNumberIndexType;
        if (!ts.rangeEquals(typeParameters, typeArguments, 0, typeParameters.length)) {
          mapper = createTypeMapper(typeParameters, typeArguments);
          members = createInstantiatedSymbolTable(source.declaredProperties, mapper, typeParameters.length === 1);
          callSignatures = instantiateList(source.declaredCallSignatures, mapper, instantiateSignature);
          constructSignatures = instantiateList(source.declaredConstructSignatures, mapper, instantiateSignature);
          stringIndexType = instantiateType(source.declaredStringIndexType, mapper);
          numberIndexType = instantiateType(source.declaredNumberIndexType, mapper);
        }
        var baseTypes = getBaseTypes(source);
        if (baseTypes.length) {
          if (members === source.symbol.members) {
            members = createSymbolTable(source.declaredProperties);
          }
          var thisArgument = ts.lastOrUndefined(typeArguments);
          for (var _i = 0,
              baseTypes_1 = baseTypes; _i < baseTypes_1.length; _i++) {
            var baseType = baseTypes_1[_i];
            var instantiatedBaseType = thisArgument ? getTypeWithThisArgument(instantiateType(baseType, mapper), thisArgument) : baseType;
            addInheritedMembers(members, getPropertiesOfObjectType(instantiatedBaseType));
            callSignatures = ts.concatenate(callSignatures, getSignaturesOfType(instantiatedBaseType, 0));
            constructSignatures = ts.concatenate(constructSignatures, getSignaturesOfType(instantiatedBaseType, 1));
            stringIndexType = stringIndexType || getIndexTypeOfType(instantiatedBaseType, 0);
            numberIndexType = numberIndexType || getIndexTypeOfType(instantiatedBaseType, 1);
          }
        }
        setObjectTypeMembers(type, members, callSignatures, constructSignatures, stringIndexType, numberIndexType);
      }
      function resolveClassOrInterfaceMembers(type) {
        resolveObjectTypeMembers(type, resolveDeclaredMembers(type), emptyArray, emptyArray);
      }
      function resolveTypeReferenceMembers(type) {
        var source = resolveDeclaredMembers(type.target);
        var typeParameters = ts.concatenate(source.typeParameters, [source.thisType]);
        var typeArguments = type.typeArguments && type.typeArguments.length === typeParameters.length ? type.typeArguments : ts.concatenate(type.typeArguments, [type]);
        resolveObjectTypeMembers(type, source, typeParameters, typeArguments);
      }
      function createSignature(declaration, typeParameters, parameters, resolvedReturnType, typePredicate, minArgumentCount, hasRestParameter, hasStringLiterals) {
        var sig = new Signature(checker);
        sig.declaration = declaration;
        sig.typeParameters = typeParameters;
        sig.parameters = parameters;
        sig.resolvedReturnType = resolvedReturnType;
        sig.typePredicate = typePredicate;
        sig.minArgumentCount = minArgumentCount;
        sig.hasRestParameter = hasRestParameter;
        sig.hasStringLiterals = hasStringLiterals;
        return sig;
      }
      function cloneSignature(sig) {
        return createSignature(sig.declaration, sig.typeParameters, sig.parameters, sig.resolvedReturnType, sig.typePredicate, sig.minArgumentCount, sig.hasRestParameter, sig.hasStringLiterals);
      }
      function getDefaultConstructSignatures(classType) {
        var baseConstructorType = getBaseConstructorTypeOfClass(classType);
        var baseSignatures = getSignaturesOfType(baseConstructorType, 1);
        if (baseSignatures.length === 0) {
          return [createSignature(undefined, classType.localTypeParameters, emptyArray, classType, undefined, 0, false, false)];
        }
        var baseTypeNode = getBaseTypeNodeOfClass(classType);
        var typeArguments = ts.map(baseTypeNode.typeArguments, getTypeFromTypeNode);
        var typeArgCount = typeArguments ? typeArguments.length : 0;
        var result = [];
        for (var _i = 0,
            baseSignatures_1 = baseSignatures; _i < baseSignatures_1.length; _i++) {
          var baseSig = baseSignatures_1[_i];
          var typeParamCount = baseSig.typeParameters ? baseSig.typeParameters.length : 0;
          if (typeParamCount === typeArgCount) {
            var sig = typeParamCount ? getSignatureInstantiation(baseSig, typeArguments) : cloneSignature(baseSig);
            sig.typeParameters = classType.localTypeParameters;
            sig.resolvedReturnType = classType;
            result.push(sig);
          }
        }
        return result;
      }
      function createTupleTypeMemberSymbols(memberTypes) {
        var members = {};
        for (var i = 0; i < memberTypes.length; i++) {
          var symbol = createSymbol(4 | 67108864, "" + i);
          symbol.type = memberTypes[i];
          members[i] = symbol;
        }
        return members;
      }
      function resolveTupleTypeMembers(type) {
        var arrayElementType = getUnionType(type.elementTypes, true);
        var arrayType = resolveStructuredTypeMembers(createTypeFromGenericGlobalType(globalArrayType, [arrayElementType, type]));
        var members = createTupleTypeMemberSymbols(type.elementTypes);
        addInheritedMembers(members, arrayType.properties);
        setObjectTypeMembers(type, members, arrayType.callSignatures, arrayType.constructSignatures, arrayType.stringIndexType, arrayType.numberIndexType);
      }
      function findMatchingSignature(signatureList, signature, partialMatch, ignoreReturnTypes) {
        for (var _i = 0,
            signatureList_1 = signatureList; _i < signatureList_1.length; _i++) {
          var s = signatureList_1[_i];
          if (compareSignaturesIdentical(s, signature, partialMatch, ignoreReturnTypes, compareTypesIdentical)) {
            return s;
          }
        }
      }
      function findMatchingSignatures(signatureLists, signature, listIndex) {
        if (signature.typeParameters) {
          if (listIndex > 0) {
            return undefined;
          }
          for (var i = 1; i < signatureLists.length; i++) {
            if (!findMatchingSignature(signatureLists[i], signature, false, false)) {
              return undefined;
            }
          }
          return [signature];
        }
        var result = undefined;
        for (var i = 0; i < signatureLists.length; i++) {
          var match = i === listIndex ? signature : findMatchingSignature(signatureLists[i], signature, true, true);
          if (!match) {
            return undefined;
          }
          if (!ts.contains(result, match)) {
            (result || (result = [])).push(match);
          }
        }
        return result;
      }
      function getUnionSignatures(types, kind) {
        var signatureLists = ts.map(types, function(t) {
          return getSignaturesOfType(t, kind);
        });
        var result = undefined;
        for (var i = 0; i < signatureLists.length; i++) {
          for (var _i = 0,
              _a = signatureLists[i]; _i < _a.length; _i++) {
            var signature = _a[_i];
            if (!result || !findMatchingSignature(result, signature, false, true)) {
              var unionSignatures = findMatchingSignatures(signatureLists, signature, i);
              if (unionSignatures) {
                var s = signature;
                if (unionSignatures.length > 1) {
                  s = cloneSignature(signature);
                  s.resolvedReturnType = undefined;
                  s.unionSignatures = unionSignatures;
                }
                (result || (result = [])).push(s);
              }
            }
          }
        }
        return result || emptyArray;
      }
      function getUnionIndexType(types, kind) {
        var indexTypes = [];
        for (var _i = 0,
            types_1 = types; _i < types_1.length; _i++) {
          var type = types_1[_i];
          var indexType = getIndexTypeOfType(type, kind);
          if (!indexType) {
            return undefined;
          }
          indexTypes.push(indexType);
        }
        return getUnionType(indexTypes);
      }
      function resolveUnionTypeMembers(type) {
        var callSignatures = getUnionSignatures(type.types, 0);
        var constructSignatures = getUnionSignatures(type.types, 1);
        var stringIndexType = getUnionIndexType(type.types, 0);
        var numberIndexType = getUnionIndexType(type.types, 1);
        setObjectTypeMembers(type, emptySymbols, callSignatures, constructSignatures, stringIndexType, numberIndexType);
      }
      function intersectTypes(type1, type2) {
        return !type1 ? type2 : !type2 ? type1 : getIntersectionType([type1, type2]);
      }
      function resolveIntersectionTypeMembers(type) {
        var callSignatures = emptyArray;
        var constructSignatures = emptyArray;
        var stringIndexType = undefined;
        var numberIndexType = undefined;
        for (var _i = 0,
            _a = type.types; _i < _a.length; _i++) {
          var t = _a[_i];
          callSignatures = ts.concatenate(callSignatures, getSignaturesOfType(t, 0));
          constructSignatures = ts.concatenate(constructSignatures, getSignaturesOfType(t, 1));
          stringIndexType = intersectTypes(stringIndexType, getIndexTypeOfType(t, 0));
          numberIndexType = intersectTypes(numberIndexType, getIndexTypeOfType(t, 1));
        }
        setObjectTypeMembers(type, emptySymbols, callSignatures, constructSignatures, stringIndexType, numberIndexType);
      }
      function resolveAnonymousTypeMembers(type) {
        var symbol = type.symbol;
        if (type.target) {
          var members = createInstantiatedSymbolTable(getPropertiesOfObjectType(type.target), type.mapper, false);
          var callSignatures = instantiateList(getSignaturesOfType(type.target, 0), type.mapper, instantiateSignature);
          var constructSignatures = instantiateList(getSignaturesOfType(type.target, 1), type.mapper, instantiateSignature);
          var stringIndexType = instantiateType(getIndexTypeOfType(type.target, 0), type.mapper);
          var numberIndexType = instantiateType(getIndexTypeOfType(type.target, 1), type.mapper);
          setObjectTypeMembers(type, members, callSignatures, constructSignatures, stringIndexType, numberIndexType);
        } else if (symbol.flags & 2048) {
          var members = symbol.members;
          var callSignatures = getSignaturesOfSymbol(members["__call"]);
          var constructSignatures = getSignaturesOfSymbol(members["__new"]);
          var stringIndexType = getIndexTypeOfSymbol(symbol, 0);
          var numberIndexType = getIndexTypeOfSymbol(symbol, 1);
          setObjectTypeMembers(type, members, callSignatures, constructSignatures, stringIndexType, numberIndexType);
        } else {
          var members = emptySymbols;
          var constructSignatures = emptyArray;
          if (symbol.flags & 1952) {
            members = getExportsOfSymbol(symbol);
          }
          if (symbol.flags & 32) {
            var classType = getDeclaredTypeOfClassOrInterface(symbol);
            constructSignatures = getSignaturesOfSymbol(symbol.members["__constructor"]);
            if (!constructSignatures.length) {
              constructSignatures = getDefaultConstructSignatures(classType);
            }
            var baseConstructorType = getBaseConstructorTypeOfClass(classType);
            if (baseConstructorType.flags & 80896) {
              members = createSymbolTable(getNamedMembers(members));
              addInheritedMembers(members, getPropertiesOfObjectType(baseConstructorType));
            }
          }
          var numberIndexType = (symbol.flags & 384) ? stringType : undefined;
          setObjectTypeMembers(type, members, emptyArray, constructSignatures, undefined, numberIndexType);
          if (symbol.flags & (16 | 8192)) {
            type.callSignatures = getSignaturesOfSymbol(symbol);
          }
        }
      }
      function resolveStructuredTypeMembers(type) {
        if (!type.members) {
          if (type.flags & 4096) {
            resolveTypeReferenceMembers(type);
          } else if (type.flags & (1024 | 2048)) {
            resolveClassOrInterfaceMembers(type);
          } else if (type.flags & 65536) {
            resolveAnonymousTypeMembers(type);
          } else if (type.flags & 8192) {
            resolveTupleTypeMembers(type);
          } else if (type.flags & 16384) {
            resolveUnionTypeMembers(type);
          } else if (type.flags & 32768) {
            resolveIntersectionTypeMembers(type);
          }
        }
        return type;
      }
      function getPropertiesOfObjectType(type) {
        if (type.flags & 80896) {
          return resolveStructuredTypeMembers(type).properties;
        }
        return emptyArray;
      }
      function getPropertyOfObjectType(type, name) {
        if (type.flags & 80896) {
          var resolved = resolveStructuredTypeMembers(type);
          if (ts.hasProperty(resolved.members, name)) {
            var symbol = resolved.members[name];
            if (symbolIsValue(symbol)) {
              return symbol;
            }
          }
        }
      }
      function getPropertiesOfUnionOrIntersectionType(type) {
        for (var _i = 0,
            _a = type.types; _i < _a.length; _i++) {
          var current = _a[_i];
          for (var _b = 0,
              _c = getPropertiesOfType(current); _b < _c.length; _b++) {
            var prop = _c[_b];
            getPropertyOfUnionOrIntersectionType(type, prop.name);
          }
          if (type.flags & 16384) {
            break;
          }
        }
        return type.resolvedProperties ? symbolsToArray(type.resolvedProperties) : emptyArray;
      }
      function getPropertiesOfType(type) {
        type = getApparentType(type);
        return type.flags & 49152 ? getPropertiesOfUnionOrIntersectionType(type) : getPropertiesOfObjectType(type);
      }
      function getApparentTypeOfTypeParameter(type) {
        if (!type.resolvedApparentType) {
          var constraintType = getConstraintOfTypeParameter(type);
          while (constraintType && constraintType.flags & 512) {
            constraintType = getConstraintOfTypeParameter(constraintType);
          }
          type.resolvedApparentType = getTypeWithThisArgument(constraintType || emptyObjectType, type);
        }
        return type.resolvedApparentType;
      }
      function getApparentType(type) {
        if (type.flags & 512) {
          type = getApparentTypeOfTypeParameter(type);
        }
        if (type.flags & 258) {
          type = globalStringType;
        } else if (type.flags & 132) {
          type = globalNumberType;
        } else if (type.flags & 8) {
          type = globalBooleanType;
        } else if (type.flags & 16777216) {
          type = globalESSymbolType;
        }
        return type;
      }
      function createUnionOrIntersectionProperty(containingType, name) {
        var types = containingType.types;
        var props;
        var commonFlags = (containingType.flags & 32768) ? 536870912 : 0;
        for (var _i = 0,
            types_2 = types; _i < types_2.length; _i++) {
          var current = types_2[_i];
          var type = getApparentType(current);
          if (type !== unknownType) {
            var prop = getPropertyOfType(type, name);
            if (prop && !(getDeclarationFlagsFromSymbol(prop) & (16 | 32))) {
              commonFlags &= prop.flags;
              if (!props) {
                props = [prop];
              } else if (!ts.contains(props, prop)) {
                props.push(prop);
              }
            } else if (containingType.flags & 16384) {
              return undefined;
            }
          }
        }
        if (!props) {
          return undefined;
        }
        if (props.length === 1) {
          return props[0];
        }
        var propTypes = [];
        var declarations = [];
        for (var _a = 0,
            props_1 = props; _a < props_1.length; _a++) {
          var prop = props_1[_a];
          if (prop.declarations) {
            ts.addRange(declarations, prop.declarations);
          }
          propTypes.push(getTypeOfSymbol(prop));
        }
        var result = createSymbol(4 | 67108864 | 268435456 | commonFlags, name);
        result.containingType = containingType;
        result.declarations = declarations;
        result.type = containingType.flags & 16384 ? getUnionType(propTypes) : getIntersectionType(propTypes);
        return result;
      }
      function getPropertyOfUnionOrIntersectionType(type, name) {
        var properties = type.resolvedProperties || (type.resolvedProperties = {});
        if (ts.hasProperty(properties, name)) {
          return properties[name];
        }
        var property = createUnionOrIntersectionProperty(type, name);
        if (property) {
          properties[name] = property;
        }
        return property;
      }
      function getPropertyOfType(type, name) {
        type = getApparentType(type);
        if (type.flags & 80896) {
          var resolved = resolveStructuredTypeMembers(type);
          if (ts.hasProperty(resolved.members, name)) {
            var symbol = resolved.members[name];
            if (symbolIsValue(symbol)) {
              return symbol;
            }
          }
          if (resolved === anyFunctionType || resolved.callSignatures.length || resolved.constructSignatures.length) {
            var symbol = getPropertyOfObjectType(globalFunctionType, name);
            if (symbol) {
              return symbol;
            }
          }
          return getPropertyOfObjectType(globalObjectType, name);
        }
        if (type.flags & 49152) {
          return getPropertyOfUnionOrIntersectionType(type, name);
        }
        return undefined;
      }
      function getSignaturesOfStructuredType(type, kind) {
        if (type.flags & 130048) {
          var resolved = resolveStructuredTypeMembers(type);
          return kind === 0 ? resolved.callSignatures : resolved.constructSignatures;
        }
        return emptyArray;
      }
      function getSignaturesOfType(type, kind) {
        return getSignaturesOfStructuredType(getApparentType(type), kind);
      }
      function getIndexTypeOfStructuredType(type, kind) {
        if (type.flags & 130048) {
          var resolved = resolveStructuredTypeMembers(type);
          return kind === 0 ? resolved.stringIndexType : resolved.numberIndexType;
        }
      }
      function getIndexTypeOfType(type, kind) {
        return getIndexTypeOfStructuredType(getApparentType(type), kind);
      }
      function getTypeParametersFromJSDocTemplate(declaration) {
        if (declaration.parserContextFlags & 32) {
          var templateTag = ts.getJSDocTemplateTag(declaration);
          if (templateTag) {
            return getTypeParametersFromDeclaration(templateTag.typeParameters);
          }
        }
        return undefined;
      }
      function getTypeParametersFromDeclaration(typeParameterDeclarations) {
        var result = [];
        ts.forEach(typeParameterDeclarations, function(node) {
          var tp = getDeclaredTypeOfTypeParameter(node.symbol);
          if (!ts.contains(result, tp)) {
            result.push(tp);
          }
        });
        return result;
      }
      function symbolsToArray(symbols) {
        var result = [];
        for (var id in symbols) {
          if (!isReservedMemberName(id)) {
            result.push(symbols[id]);
          }
        }
        return result;
      }
      function isOptionalParameter(node) {
        if (node.parserContextFlags & 32) {
          if (node.type && node.type.kind === 263) {
            return true;
          }
          var paramTag = ts.getCorrespondingJSDocParameterTag(node);
          if (paramTag) {
            if (paramTag.isBracketed) {
              return true;
            }
            if (paramTag.typeExpression) {
              return paramTag.typeExpression.type.kind === 263;
            }
          }
        }
        if (ts.hasQuestionToken(node)) {
          return true;
        }
        if (node.initializer) {
          var signatureDeclaration = node.parent;
          var signature = getSignatureFromDeclaration(signatureDeclaration);
          var parameterIndex = ts.indexOf(signatureDeclaration.parameters, node);
          ts.Debug.assert(parameterIndex >= 0);
          return parameterIndex >= signature.minArgumentCount;
        }
        return false;
      }
      function createTypePredicateFromTypePredicateNode(node) {
        if (node.parameterName.kind === 69) {
          var parameterName = node.parameterName;
          return {
            kind: 1,
            parameterName: parameterName ? parameterName.text : undefined,
            parameterIndex: parameterName ? getTypePredicateParameterIndex(node.parent.parameters, parameterName) : undefined,
            type: getTypeFromTypeNode(node.type)
          };
        } else {
          return {
            kind: 0,
            type: getTypeFromTypeNode(node.type)
          };
        }
      }
      function getSignatureFromDeclaration(declaration) {
        var links = getNodeLinks(declaration);
        if (!links.resolvedSignature) {
          var classType = declaration.kind === 145 ? getDeclaredTypeOfClassOrInterface(getMergedSymbol(declaration.parent.symbol)) : undefined;
          var typeParameters = classType ? classType.localTypeParameters : declaration.typeParameters ? getTypeParametersFromDeclaration(declaration.typeParameters) : getTypeParametersFromJSDocTemplate(declaration);
          var parameters = [];
          var hasStringLiterals = false;
          var minArgumentCount = -1;
          var isJSConstructSignature = ts.isJSDocConstructSignature(declaration);
          var returnType = undefined;
          var typePredicate = undefined;
          for (var i = isJSConstructSignature ? 1 : 0,
              n = declaration.parameters.length; i < n; i++) {
            var param = declaration.parameters[i];
            var paramSymbol = param.symbol;
            if (paramSymbol && !!(paramSymbol.flags & 4) && !ts.isBindingPattern(param.name)) {
              var resolvedSymbol = resolveName(param, paramSymbol.name, 107455, undefined, undefined);
              paramSymbol = resolvedSymbol;
            }
            parameters.push(paramSymbol);
            if (param.type && param.type.kind === 163) {
              hasStringLiterals = true;
            }
            if (param.initializer || param.questionToken || param.dotDotDotToken) {
              if (minArgumentCount < 0) {
                minArgumentCount = i;
              }
            } else {
              minArgumentCount = -1;
            }
          }
          if (minArgumentCount < 0) {
            minArgumentCount = declaration.parameters.length;
          }
          if (isJSConstructSignature) {
            minArgumentCount--;
            returnType = getTypeFromTypeNode(declaration.parameters[0].type);
          } else if (classType) {
            returnType = classType;
          } else if (declaration.type) {
            returnType = getTypeFromTypeNode(declaration.type);
            if (declaration.type.kind === 151) {
              typePredicate = createTypePredicateFromTypePredicateNode(declaration.type);
            }
          } else {
            if (declaration.parserContextFlags & 32) {
              var type = getReturnTypeFromJSDocComment(declaration);
              if (type && type !== unknownType) {
                returnType = type;
              }
            }
            if (declaration.kind === 146 && !ts.hasDynamicName(declaration)) {
              var setter = ts.getDeclarationOfKind(declaration.symbol, 147);
              returnType = getAnnotatedAccessorType(setter);
            }
            if (!returnType && ts.nodeIsMissing(declaration.body)) {
              returnType = anyType;
            }
          }
          links.resolvedSignature = createSignature(declaration, typeParameters, parameters, returnType, typePredicate, minArgumentCount, ts.hasRestParameter(declaration), hasStringLiterals);
        }
        return links.resolvedSignature;
      }
      function getSignaturesOfSymbol(symbol) {
        if (!symbol)
          return emptyArray;
        var result = [];
        for (var i = 0,
            len = symbol.declarations.length; i < len; i++) {
          var node = symbol.declarations[i];
          switch (node.kind) {
            case 153:
            case 154:
            case 216:
            case 144:
            case 143:
            case 145:
            case 148:
            case 149:
            case 150:
            case 146:
            case 147:
            case 176:
            case 177:
            case 264:
              if (i > 0 && node.body) {
                var previous = symbol.declarations[i - 1];
                if (node.parent === previous.parent && node.kind === previous.kind && node.pos === previous.end) {
                  break;
                }
              }
              result.push(getSignatureFromDeclaration(node));
          }
        }
        return result;
      }
      function resolveExternalModuleTypeByLiteral(name) {
        var moduleSym = resolveExternalModuleName(name, name);
        if (moduleSym) {
          var resolvedModuleSymbol = resolveExternalModuleSymbol(moduleSym);
          if (resolvedModuleSymbol) {
            return getTypeOfSymbol(resolvedModuleSymbol);
          }
        }
        return anyType;
      }
      function getReturnTypeOfSignature(signature) {
        if (!signature.resolvedReturnType) {
          if (!pushTypeResolution(signature, 3)) {
            return unknownType;
          }
          var type = void 0;
          if (signature.target) {
            type = instantiateType(getReturnTypeOfSignature(signature.target), signature.mapper);
          } else if (signature.unionSignatures) {
            type = getUnionType(ts.map(signature.unionSignatures, getReturnTypeOfSignature));
          } else {
            type = getReturnTypeFromBody(signature.declaration);
          }
          if (!popTypeResolution()) {
            type = anyType;
            if (compilerOptions.noImplicitAny) {
              var declaration = signature.declaration;
              if (declaration.name) {
                error(declaration.name, ts.Diagnostics._0_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions, ts.declarationNameToString(declaration.name));
              } else {
                error(declaration, ts.Diagnostics.Function_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions);
              }
            }
          }
          signature.resolvedReturnType = type;
        }
        return signature.resolvedReturnType;
      }
      function getRestTypeOfSignature(signature) {
        if (signature.hasRestParameter) {
          var type = getTypeOfSymbol(ts.lastOrUndefined(signature.parameters));
          if (type.flags & 4096 && type.target === globalArrayType) {
            return type.typeArguments[0];
          }
        }
        return anyType;
      }
      function getSignatureInstantiation(signature, typeArguments) {
        return instantiateSignature(signature, createTypeMapper(signature.typeParameters, typeArguments), true);
      }
      function getErasedSignature(signature) {
        if (!signature.typeParameters)
          return signature;
        if (!signature.erasedSignatureCache) {
          if (signature.target) {
            signature.erasedSignatureCache = instantiateSignature(getErasedSignature(signature.target), signature.mapper);
          } else {
            signature.erasedSignatureCache = instantiateSignature(signature, createTypeEraser(signature.typeParameters), true);
          }
        }
        return signature.erasedSignatureCache;
      }
      function getOrCreateTypeFromSignature(signature) {
        if (!signature.isolatedSignatureType) {
          var isConstructor = signature.declaration.kind === 145 || signature.declaration.kind === 149;
          var type = createObjectType(65536 | 262144);
          type.members = emptySymbols;
          type.properties = emptyArray;
          type.callSignatures = !isConstructor ? [signature] : emptyArray;
          type.constructSignatures = isConstructor ? [signature] : emptyArray;
          signature.isolatedSignatureType = type;
        }
        return signature.isolatedSignatureType;
      }
      function getIndexSymbol(symbol) {
        return symbol.members["__index"];
      }
      function getIndexDeclarationOfSymbol(symbol, kind) {
        var syntaxKind = kind === 1 ? 128 : 130;
        var indexSymbol = getIndexSymbol(symbol);
        if (indexSymbol) {
          for (var _i = 0,
              _a = indexSymbol.declarations; _i < _a.length; _i++) {
            var decl = _a[_i];
            var node = decl;
            if (node.parameters.length === 1) {
              var parameter = node.parameters[0];
              if (parameter && parameter.type && parameter.type.kind === syntaxKind) {
                return node;
              }
            }
          }
        }
        return undefined;
      }
      function getIndexTypeOfSymbol(symbol, kind) {
        var declaration = getIndexDeclarationOfSymbol(symbol, kind);
        return declaration ? declaration.type ? getTypeFromTypeNode(declaration.type) : anyType : undefined;
      }
      function getConstraintDeclaration(type) {
        return ts.getDeclarationOfKind(type.symbol, 138).constraint;
      }
      function hasConstraintReferenceTo(type, target) {
        var checked;
        while (type && !(type.flags & 33554432) && type.flags & 512 && !ts.contains(checked, type)) {
          if (type === target) {
            return true;
          }
          (checked || (checked = [])).push(type);
          var constraintDeclaration = getConstraintDeclaration(type);
          type = constraintDeclaration && getTypeFromTypeNode(constraintDeclaration);
        }
        return false;
      }
      function getConstraintOfTypeParameter(typeParameter) {
        if (!typeParameter.constraint) {
          if (typeParameter.target) {
            var targetConstraint = getConstraintOfTypeParameter(typeParameter.target);
            typeParameter.constraint = targetConstraint ? instantiateType(targetConstraint, typeParameter.mapper) : noConstraintType;
          } else {
            var constraintDeclaration = getConstraintDeclaration(typeParameter);
            var constraint = getTypeFromTypeNode(constraintDeclaration);
            if (hasConstraintReferenceTo(constraint, typeParameter)) {
              error(constraintDeclaration, ts.Diagnostics.Type_parameter_0_has_a_circular_constraint, typeToString(typeParameter));
              constraint = unknownType;
            }
            typeParameter.constraint = constraint;
          }
        }
        return typeParameter.constraint === noConstraintType ? undefined : typeParameter.constraint;
      }
      function getParentSymbolOfTypeParameter(typeParameter) {
        return getSymbolOfNode(ts.getDeclarationOfKind(typeParameter.symbol, 138).parent);
      }
      function getTypeListId(types) {
        if (types) {
          switch (types.length) {
            case 1:
              return "" + types[0].id;
            case 2:
              return types[0].id + "," + types[1].id;
            default:
              var result = "";
              for (var i = 0; i < types.length; i++) {
                if (i > 0) {
                  result += ",";
                }
                result += types[i].id;
              }
              return result;
          }
        }
        return "";
      }
      function getPropagatingFlagsOfTypes(types) {
        var result = 0;
        for (var _i = 0,
            types_3 = types; _i < types_3.length; _i++) {
          var type = types_3[_i];
          result |= type.flags;
        }
        return result & 14680064;
      }
      function createTypeReference(target, typeArguments) {
        var id = getTypeListId(typeArguments);
        var type = target.instantiations[id];
        if (!type) {
          var flags = 4096 | (typeArguments ? getPropagatingFlagsOfTypes(typeArguments) : 0);
          type = target.instantiations[id] = createObjectType(flags, target.symbol);
          type.target = target;
          type.typeArguments = typeArguments;
        }
        return type;
      }
      function getTypeFromClassOrInterfaceReference(node, symbol) {
        var type = getDeclaredTypeOfSymbol(symbol);
        var typeParameters = type.localTypeParameters;
        if (typeParameters) {
          if (!node.typeArguments || node.typeArguments.length !== typeParameters.length) {
            error(node, ts.Diagnostics.Generic_type_0_requires_1_type_argument_s, typeToString(type, undefined, 1), typeParameters.length);
            return unknownType;
          }
          return createTypeReference(type, ts.concatenate(type.outerTypeParameters, ts.map(node.typeArguments, getTypeFromTypeNode)));
        }
        if (node.typeArguments) {
          error(node, ts.Diagnostics.Type_0_is_not_generic, typeToString(type));
          return unknownType;
        }
        return type;
      }
      function getTypeFromTypeAliasReference(node, symbol) {
        var type = getDeclaredTypeOfSymbol(symbol);
        var links = getSymbolLinks(symbol);
        var typeParameters = links.typeParameters;
        if (typeParameters) {
          if (!node.typeArguments || node.typeArguments.length !== typeParameters.length) {
            error(node, ts.Diagnostics.Generic_type_0_requires_1_type_argument_s, symbolToString(symbol), typeParameters.length);
            return unknownType;
          }
          var typeArguments = ts.map(node.typeArguments, getTypeFromTypeNode);
          var id = getTypeListId(typeArguments);
          return links.instantiations[id] || (links.instantiations[id] = instantiateType(type, createTypeMapper(typeParameters, typeArguments)));
        }
        if (node.typeArguments) {
          error(node, ts.Diagnostics.Type_0_is_not_generic, symbolToString(symbol));
          return unknownType;
        }
        return type;
      }
      function getTypeFromNonGenericTypeReference(node, symbol) {
        if (node.typeArguments) {
          error(node, ts.Diagnostics.Type_0_is_not_generic, symbolToString(symbol));
          return unknownType;
        }
        return getDeclaredTypeOfSymbol(symbol);
      }
      function getTypeReferenceName(node) {
        switch (node.kind) {
          case 152:
            return node.typeName;
          case 262:
            return node.name;
          case 191:
            if (ts.isSupportedExpressionWithTypeArguments(node)) {
              return node.expression;
            }
        }
        return undefined;
      }
      function resolveTypeReferenceName(node, typeReferenceName) {
        if (!typeReferenceName) {
          return unknownSymbol;
        }
        return resolveEntityName(typeReferenceName, 793056) || unknownSymbol;
      }
      function getTypeReferenceType(node, symbol) {
        if (symbol === unknownSymbol) {
          return unknownType;
        }
        if (symbol.flags & (32 | 64)) {
          return getTypeFromClassOrInterfaceReference(node, symbol);
        }
        if (symbol.flags & 524288) {
          return getTypeFromTypeAliasReference(node, symbol);
        }
        if (symbol.flags & 107455 && node.kind === 262) {
          return getTypeOfSymbol(symbol);
        }
        return getTypeFromNonGenericTypeReference(node, symbol);
      }
      function getTypeFromTypeReference(node) {
        var links = getNodeLinks(node);
        if (!links.resolvedType) {
          var symbol = void 0;
          var type = void 0;
          if (node.kind === 262) {
            var typeReferenceName = getTypeReferenceName(node);
            symbol = resolveTypeReferenceName(node, typeReferenceName);
            type = getTypeReferenceType(node, symbol);
            links.resolvedSymbol = symbol;
            links.resolvedType = type;
          } else {
            var typeNameOrExpression = node.kind === 152 ? node.typeName : ts.isSupportedExpressionWithTypeArguments(node) ? node.expression : undefined;
            symbol = typeNameOrExpression && resolveEntityName(typeNameOrExpression, 793056) || unknownSymbol;
            type = symbol === unknownSymbol ? unknownType : symbol.flags & (32 | 64) ? getTypeFromClassOrInterfaceReference(node, symbol) : symbol.flags & 524288 ? getTypeFromTypeAliasReference(node, symbol) : getTypeFromNonGenericTypeReference(node, symbol);
          }
          links.resolvedSymbol = symbol;
          links.resolvedType = type;
        }
        return links.resolvedType;
      }
      function getTypeFromTypeQueryNode(node) {
        var links = getNodeLinks(node);
        if (!links.resolvedType) {
          links.resolvedType = getWidenedType(checkExpression(node.exprName));
        }
        return links.resolvedType;
      }
      function getTypeOfGlobalSymbol(symbol, arity) {
        function getTypeDeclaration(symbol) {
          var declarations = symbol.declarations;
          for (var _i = 0,
              declarations_3 = declarations; _i < declarations_3.length; _i++) {
            var declaration = declarations_3[_i];
            switch (declaration.kind) {
              case 217:
              case 218:
              case 220:
                return declaration;
            }
          }
        }
        if (!symbol) {
          return arity ? emptyGenericType : emptyObjectType;
        }
        var type = getDeclaredTypeOfSymbol(symbol);
        if (!(type.flags & 80896)) {
          error(getTypeDeclaration(symbol), ts.Diagnostics.Global_type_0_must_be_a_class_or_interface_type, symbol.name);
          return arity ? emptyGenericType : emptyObjectType;
        }
        if ((type.typeParameters ? type.typeParameters.length : 0) !== arity) {
          error(getTypeDeclaration(symbol), ts.Diagnostics.Global_type_0_must_have_1_type_parameter_s, symbol.name, arity);
          return arity ? emptyGenericType : emptyObjectType;
        }
        return type;
      }
      function getGlobalValueSymbol(name) {
        return getGlobalSymbol(name, 107455, ts.Diagnostics.Cannot_find_global_value_0);
      }
      function getGlobalTypeSymbol(name) {
        return getGlobalSymbol(name, 793056, ts.Diagnostics.Cannot_find_global_type_0);
      }
      function getGlobalSymbol(name, meaning, diagnostic) {
        return resolveName(undefined, name, meaning, diagnostic, name);
      }
      function getGlobalType(name, arity) {
        if (arity === void 0) {
          arity = 0;
        }
        return getTypeOfGlobalSymbol(getGlobalTypeSymbol(name), arity);
      }
      function getExportedTypeFromNamespace(namespace, name) {
        var namespaceSymbol = getGlobalSymbol(namespace, 1536, undefined);
        var typeSymbol = namespaceSymbol && getSymbol(namespaceSymbol.exports, name, 793056);
        return typeSymbol && getDeclaredTypeOfSymbol(typeSymbol);
      }
      function getGlobalESSymbolConstructorSymbol() {
        return globalESSymbolConstructorSymbol || (globalESSymbolConstructorSymbol = getGlobalValueSymbol("Symbol"));
      }
      function createTypedPropertyDescriptorType(propertyType) {
        var globalTypedPropertyDescriptorType = getGlobalTypedPropertyDescriptorType();
        return globalTypedPropertyDescriptorType !== emptyGenericType ? createTypeReference(globalTypedPropertyDescriptorType, [propertyType]) : emptyObjectType;
      }
      function createTypeFromGenericGlobalType(genericGlobalType, typeArguments) {
        return genericGlobalType !== emptyGenericType ? createTypeReference(genericGlobalType, typeArguments) : emptyObjectType;
      }
      function createIterableType(elementType) {
        return createTypeFromGenericGlobalType(globalIterableType, [elementType]);
      }
      function createIterableIteratorType(elementType) {
        return createTypeFromGenericGlobalType(globalIterableIteratorType, [elementType]);
      }
      function createArrayType(elementType) {
        return createTypeFromGenericGlobalType(globalArrayType, [elementType]);
      }
      function getTypeFromArrayTypeNode(node) {
        var links = getNodeLinks(node);
        if (!links.resolvedType) {
          links.resolvedType = createArrayType(getTypeFromTypeNode(node.elementType));
        }
        return links.resolvedType;
      }
      function createTupleType(elementTypes) {
        var id = getTypeListId(elementTypes);
        return tupleTypes[id] || (tupleTypes[id] = createNewTupleType(elementTypes));
      }
      function createNewTupleType(elementTypes) {
        var type = createObjectType(8192 | getPropagatingFlagsOfTypes(elementTypes));
        type.elementTypes = elementTypes;
        return type;
      }
      function getTypeFromTupleTypeNode(node) {
        var links = getNodeLinks(node);
        if (!links.resolvedType) {
          links.resolvedType = createTupleType(ts.map(node.elementTypes, getTypeFromTypeNode));
        }
        return links.resolvedType;
      }
      function addTypeToSet(typeSet, type, typeSetKind) {
        if (type.flags & typeSetKind) {
          addTypesToSet(typeSet, type.types, typeSetKind);
        } else if (!ts.contains(typeSet, type)) {
          typeSet.push(type);
        }
      }
      function addTypesToSet(typeSet, types, typeSetKind) {
        for (var _i = 0,
            types_4 = types; _i < types_4.length; _i++) {
          var type = types_4[_i];
          addTypeToSet(typeSet, type, typeSetKind);
        }
      }
      function isSubtypeOfAny(candidate, types) {
        for (var i = 0,
            len = types.length; i < len; i++) {
          if (candidate !== types[i] && isTypeSubtypeOf(candidate, types[i])) {
            return true;
          }
        }
        return false;
      }
      function removeSubtypes(types) {
        var i = types.length;
        while (i > 0) {
          i--;
          if (isSubtypeOfAny(types[i], types)) {
            types.splice(i, 1);
          }
        }
      }
      function containsTypeAny(types) {
        for (var _i = 0,
            types_5 = types; _i < types_5.length; _i++) {
          var type = types_5[_i];
          if (isTypeAny(type)) {
            return true;
          }
        }
        return false;
      }
      function removeAllButLast(types, typeToRemove) {
        var i = types.length;
        while (i > 0 && types.length > 1) {
          i--;
          if (types[i] === typeToRemove) {
            types.splice(i, 1);
          }
        }
      }
      function getUnionType(types, noSubtypeReduction) {
        if (types.length === 0) {
          return emptyUnionType;
        }
        var typeSet = [];
        addTypesToSet(typeSet, types, 16384);
        if (containsTypeAny(typeSet)) {
          return anyType;
        }
        if (noSubtypeReduction) {
          removeAllButLast(typeSet, undefinedType);
          removeAllButLast(typeSet, nullType);
        } else {
          removeSubtypes(typeSet);
        }
        if (typeSet.length === 1) {
          return typeSet[0];
        }
        var id = getTypeListId(typeSet);
        var type = unionTypes[id];
        if (!type) {
          type = unionTypes[id] = createObjectType(16384 | getPropagatingFlagsOfTypes(typeSet));
          type.types = typeSet;
        }
        return type;
      }
      function getTypeFromUnionTypeNode(node) {
        var links = getNodeLinks(node);
        if (!links.resolvedType) {
          links.resolvedType = getUnionType(ts.map(node.types, getTypeFromTypeNode), true);
        }
        return links.resolvedType;
      }
      function getIntersectionType(types) {
        if (types.length === 0) {
          return emptyObjectType;
        }
        var typeSet = [];
        addTypesToSet(typeSet, types, 32768);
        if (containsTypeAny(typeSet)) {
          return anyType;
        }
        if (typeSet.length === 1) {
          return typeSet[0];
        }
        var id = getTypeListId(typeSet);
        var type = intersectionTypes[id];
        if (!type) {
          type = intersectionTypes[id] = createObjectType(32768 | getPropagatingFlagsOfTypes(typeSet));
          type.types = typeSet;
        }
        return type;
      }
      function getTypeFromIntersectionTypeNode(node) {
        var links = getNodeLinks(node);
        if (!links.resolvedType) {
          links.resolvedType = getIntersectionType(ts.map(node.types, getTypeFromTypeNode));
        }
        return links.resolvedType;
      }
      function getTypeFromTypeLiteralOrFunctionOrConstructorTypeNode(node) {
        var links = getNodeLinks(node);
        if (!links.resolvedType) {
          links.resolvedType = createObjectType(65536, node.symbol);
        }
        return links.resolvedType;
      }
      function getStringLiteralTypeForText(text) {
        if (ts.hasProperty(stringLiteralTypes, text)) {
          return stringLiteralTypes[text];
        }
        var type = stringLiteralTypes[text] = createType(256);
        type.text = text;
        return type;
      }
      function getTypeFromStringLiteralTypeNode(node) {
        var links = getNodeLinks(node);
        if (!links.resolvedType) {
          links.resolvedType = getStringLiteralTypeForText(node.text);
        }
        return links.resolvedType;
      }
      function getTypeFromJSDocVariadicType(node) {
        var links = getNodeLinks(node);
        if (!links.resolvedType) {
          var type = getTypeFromTypeNode(node.type);
          links.resolvedType = type ? createArrayType(type) : unknownType;
        }
        return links.resolvedType;
      }
      function getTypeFromJSDocTupleType(node) {
        var links = getNodeLinks(node);
        if (!links.resolvedType) {
          var types = ts.map(node.types, getTypeFromTypeNode);
          links.resolvedType = createTupleType(types);
        }
        return links.resolvedType;
      }
      function getThisType(node) {
        var container = ts.getThisContainer(node, false);
        var parent = container && container.parent;
        if (parent && (ts.isClassLike(parent) || parent.kind === 218)) {
          if (!(container.flags & 64) && (container.kind !== 145 || ts.isNodeDescendentOf(node, container.body))) {
            return getDeclaredTypeOfClassOrInterface(getSymbolOfNode(parent)).thisType;
          }
        }
        error(node, ts.Diagnostics.A_this_type_is_available_only_in_a_non_static_member_of_a_class_or_interface);
        return unknownType;
      }
      function getTypeFromThisTypeNode(node) {
        var links = getNodeLinks(node);
        if (!links.resolvedType) {
          links.resolvedType = getThisType(node);
        }
        return links.resolvedType;
      }
      function getTypeFromTypeNode(node) {
        switch (node.kind) {
          case 117:
          case 253:
          case 254:
            return anyType;
          case 130:
            return stringType;
          case 128:
            return numberType;
          case 120:
            return booleanType;
          case 131:
            return esSymbolType;
          case 103:
            return voidType;
          case 162:
            return getTypeFromThisTypeNode(node);
          case 163:
            return getTypeFromStringLiteralTypeNode(node);
          case 152:
          case 262:
            return getTypeFromTypeReference(node);
          case 151:
            return booleanType;
          case 191:
            return getTypeFromTypeReference(node);
          case 155:
            return getTypeFromTypeQueryNode(node);
          case 157:
          case 255:
            return getTypeFromArrayTypeNode(node);
          case 158:
            return getTypeFromTupleTypeNode(node);
          case 159:
          case 256:
            return getTypeFromUnionTypeNode(node);
          case 160:
            return getTypeFromIntersectionTypeNode(node);
          case 161:
          case 258:
          case 259:
          case 266:
          case 267:
          case 263:
            return getTypeFromTypeNode(node.type);
          case 153:
          case 154:
          case 156:
          case 264:
          case 260:
            return getTypeFromTypeLiteralOrFunctionOrConstructorTypeNode(node);
          case 69:
          case 136:
            var symbol = getSymbolAtLocation(node);
            return symbol && getDeclaredTypeOfSymbol(symbol);
          case 257:
            return getTypeFromJSDocTupleType(node);
          case 265:
            return getTypeFromJSDocVariadicType(node);
          default:
            return unknownType;
        }
      }
      function instantiateList(items, mapper, instantiator) {
        if (items && items.length) {
          var result = [];
          for (var _i = 0,
              items_1 = items; _i < items_1.length; _i++) {
            var v = items_1[_i];
            result.push(instantiator(v, mapper));
          }
          return result;
        }
        return items;
      }
      function createUnaryTypeMapper(source, target) {
        return function(t) {
          return t === source ? target : t;
        };
      }
      function createBinaryTypeMapper(source1, target1, source2, target2) {
        return function(t) {
          return t === source1 ? target1 : t === source2 ? target2 : t;
        };
      }
      function createTypeMapper(sources, targets) {
        switch (sources.length) {
          case 1:
            return createUnaryTypeMapper(sources[0], targets[0]);
          case 2:
            return createBinaryTypeMapper(sources[0], targets[0], sources[1], targets[1]);
        }
        return function(t) {
          for (var i = 0; i < sources.length; i++) {
            if (t === sources[i]) {
              return targets[i];
            }
          }
          return t;
        };
      }
      function createUnaryTypeEraser(source) {
        return function(t) {
          return t === source ? anyType : t;
        };
      }
      function createBinaryTypeEraser(source1, source2) {
        return function(t) {
          return t === source1 || t === source2 ? anyType : t;
        };
      }
      function createTypeEraser(sources) {
        switch (sources.length) {
          case 1:
            return createUnaryTypeEraser(sources[0]);
          case 2:
            return createBinaryTypeEraser(sources[0], sources[1]);
        }
        return function(t) {
          for (var _i = 0,
              sources_1 = sources; _i < sources_1.length; _i++) {
            var source = sources_1[_i];
            if (t === source) {
              return anyType;
            }
          }
          return t;
        };
      }
      function getInferenceMapper(context) {
        if (!context.mapper) {
          var mapper = function(t) {
            var typeParameters = context.typeParameters;
            for (var i = 0; i < typeParameters.length; i++) {
              if (t === typeParameters[i]) {
                context.inferences[i].isFixed = true;
                return getInferredType(context, i);
              }
            }
            return t;
          };
          mapper.context = context;
          context.mapper = mapper;
        }
        return context.mapper;
      }
      function identityMapper(type) {
        return type;
      }
      function combineTypeMappers(mapper1, mapper2) {
        return function(t) {
          return instantiateType(mapper1(t), mapper2);
        };
      }
      function cloneTypeParameter(typeParameter) {
        var result = createType(512);
        result.symbol = typeParameter.symbol;
        result.target = typeParameter;
        return result;
      }
      function cloneTypePredicate(predicate, mapper) {
        if (ts.isIdentifierTypePredicate(predicate)) {
          return {
            kind: 1,
            parameterName: predicate.parameterName,
            parameterIndex: predicate.parameterIndex,
            type: instantiateType(predicate.type, mapper)
          };
        } else {
          return {
            kind: 0,
            type: instantiateType(predicate.type, mapper)
          };
        }
      }
      function instantiateSignature(signature, mapper, eraseTypeParameters) {
        var freshTypeParameters;
        var freshTypePredicate;
        if (signature.typeParameters && !eraseTypeParameters) {
          freshTypeParameters = ts.map(signature.typeParameters, cloneTypeParameter);
          mapper = combineTypeMappers(createTypeMapper(signature.typeParameters, freshTypeParameters), mapper);
          for (var _i = 0,
              freshTypeParameters_1 = freshTypeParameters; _i < freshTypeParameters_1.length; _i++) {
            var tp = freshTypeParameters_1[_i];
            tp.mapper = mapper;
          }
        }
        if (signature.typePredicate) {
          freshTypePredicate = cloneTypePredicate(signature.typePredicate, mapper);
        }
        var result = createSignature(signature.declaration, freshTypeParameters, instantiateList(signature.parameters, mapper, instantiateSymbol), instantiateType(signature.resolvedReturnType, mapper), freshTypePredicate, signature.minArgumentCount, signature.hasRestParameter, signature.hasStringLiterals);
        result.target = signature;
        result.mapper = mapper;
        return result;
      }
      function instantiateSymbol(symbol, mapper) {
        if (symbol.flags & 16777216) {
          var links = getSymbolLinks(symbol);
          symbol = links.target;
          mapper = combineTypeMappers(links.mapper, mapper);
        }
        var result = createSymbol(16777216 | 67108864 | symbol.flags, symbol.name);
        result.declarations = symbol.declarations;
        result.parent = symbol.parent;
        result.target = symbol;
        result.mapper = mapper;
        if (symbol.valueDeclaration) {
          result.valueDeclaration = symbol.valueDeclaration;
        }
        return result;
      }
      function instantiateAnonymousType(type, mapper) {
        if (mapper.instantiations) {
          var cachedType = mapper.instantiations[type.id];
          if (cachedType) {
            return cachedType;
          }
        } else {
          mapper.instantiations = [];
        }
        var result = createObjectType(65536 | 131072, type.symbol);
        result.target = type;
        result.mapper = mapper;
        mapper.instantiations[type.id] = result;
        return result;
      }
      function instantiateType(type, mapper) {
        if (type && mapper !== identityMapper) {
          if (type.flags & 512) {
            return mapper(type);
          }
          if (type.flags & 65536) {
            return type.symbol && type.symbol.flags & (16 | 8192 | 32 | 2048 | 4096) ? instantiateAnonymousType(type, mapper) : type;
          }
          if (type.flags & 4096) {
            return createTypeReference(type.target, instantiateList(type.typeArguments, mapper, instantiateType));
          }
          if (type.flags & 8192) {
            return createTupleType(instantiateList(type.elementTypes, mapper, instantiateType));
          }
          if (type.flags & 16384) {
            return getUnionType(instantiateList(type.types, mapper, instantiateType), true);
          }
          if (type.flags & 32768) {
            return getIntersectionType(instantiateList(type.types, mapper, instantiateType));
          }
        }
        return type;
      }
      function isContextSensitive(node) {
        ts.Debug.assert(node.kind !== 144 || ts.isObjectLiteralMethod(node));
        switch (node.kind) {
          case 176:
          case 177:
            return isContextSensitiveFunctionLikeDeclaration(node);
          case 168:
            return ts.forEach(node.properties, isContextSensitive);
          case 167:
            return ts.forEach(node.elements, isContextSensitive);
          case 185:
            return isContextSensitive(node.whenTrue) || isContextSensitive(node.whenFalse);
          case 184:
            return node.operatorToken.kind === 52 && (isContextSensitive(node.left) || isContextSensitive(node.right));
          case 248:
            return isContextSensitive(node.initializer);
          case 144:
          case 143:
            return isContextSensitiveFunctionLikeDeclaration(node);
          case 175:
            return isContextSensitive(node.expression);
        }
        return false;
      }
      function isContextSensitiveFunctionLikeDeclaration(node) {
        return !node.typeParameters && node.parameters.length && !ts.forEach(node.parameters, function(p) {
          return p.type;
        });
      }
      function getTypeWithoutSignatures(type) {
        if (type.flags & 80896) {
          var resolved = resolveStructuredTypeMembers(type);
          if (resolved.constructSignatures.length) {
            var result = createObjectType(65536, type.symbol);
            result.members = resolved.members;
            result.properties = resolved.properties;
            result.callSignatures = emptyArray;
            result.constructSignatures = emptyArray;
            type = result;
          }
        }
        return type;
      }
      function isTypeIdenticalTo(source, target) {
        return checkTypeRelatedTo(source, target, identityRelation, undefined);
      }
      function compareTypesIdentical(source, target) {
        return checkTypeRelatedTo(source, target, identityRelation, undefined) ? -1 : 0;
      }
      function compareTypesAssignable(source, target) {
        return checkTypeRelatedTo(source, target, assignableRelation, undefined) ? -1 : 0;
      }
      function isTypeSubtypeOf(source, target) {
        return checkTypeSubtypeOf(source, target, undefined);
      }
      function isTypeAssignableTo(source, target) {
        return checkTypeAssignableTo(source, target, undefined);
      }
      function checkTypeSubtypeOf(source, target, errorNode, headMessage, containingMessageChain) {
        return checkTypeRelatedTo(source, target, subtypeRelation, errorNode, headMessage, containingMessageChain);
      }
      function checkTypeAssignableTo(source, target, errorNode, headMessage, containingMessageChain) {
        return checkTypeRelatedTo(source, target, assignableRelation, errorNode, headMessage, containingMessageChain);
      }
      function isSignatureAssignableTo(source, target, ignoreReturnTypes) {
        return compareSignaturesRelated(source, target, ignoreReturnTypes, false, undefined, compareTypesAssignable) !== 0;
      }
      function compareSignaturesRelated(source, target, ignoreReturnTypes, reportErrors, errorReporter, compareTypes) {
        if (source === target) {
          return -1;
        }
        if (!target.hasRestParameter && source.minArgumentCount > target.parameters.length) {
          return 0;
        }
        source = getErasedSignature(source);
        target = getErasedSignature(target);
        var result = -1;
        var sourceMax = getNumNonRestParameters(source);
        var targetMax = getNumNonRestParameters(target);
        var checkCount = getNumParametersToCheckForSignatureRelatability(source, sourceMax, target, targetMax);
        var sourceParams = source.parameters;
        var targetParams = target.parameters;
        for (var i = 0; i < checkCount; i++) {
          var s = i < sourceMax ? getTypeOfSymbol(sourceParams[i]) : getRestTypeOfSignature(source);
          var t = i < targetMax ? getTypeOfSymbol(targetParams[i]) : getRestTypeOfSignature(target);
          var related = compareTypes(s, t, false) || compareTypes(t, s, reportErrors);
          if (!related) {
            if (reportErrors) {
              errorReporter(ts.Diagnostics.Types_of_parameters_0_and_1_are_incompatible, sourceParams[i < sourceMax ? i : sourceMax].name, targetParams[i < targetMax ? i : targetMax].name);
            }
            return 0;
          }
          result &= related;
        }
        if (!ignoreReturnTypes) {
          var targetReturnType = getReturnTypeOfSignature(target);
          if (targetReturnType === voidType) {
            return result;
          }
          var sourceReturnType = getReturnTypeOfSignature(source);
          if (target.typePredicate) {
            if (source.typePredicate) {
              result &= compareTypePredicateRelatedTo(source.typePredicate, target.typePredicate, reportErrors, errorReporter, compareTypes);
            } else if (ts.isIdentifierTypePredicate(target.typePredicate)) {
              if (reportErrors) {
                errorReporter(ts.Diagnostics.Signature_0_must_have_a_type_predicate, signatureToString(source));
              }
              return 0;
            }
          } else {
            result &= compareTypes(sourceReturnType, targetReturnType, reportErrors);
          }
        }
        return result;
      }
      function compareTypePredicateRelatedTo(source, target, reportErrors, errorReporter, compareTypes) {
        if (source.kind !== target.kind) {
          if (reportErrors) {
            errorReporter(ts.Diagnostics.A_this_based_type_guard_is_not_compatible_with_a_parameter_based_type_guard);
            errorReporter(ts.Diagnostics.Type_predicate_0_is_not_assignable_to_1, typePredicateToString(source), typePredicateToString(target));
          }
          return 0;
        }
        if (source.kind === 1) {
          var sourceIdentifierPredicate = source;
          var targetIdentifierPredicate = target;
          if (sourceIdentifierPredicate.parameterIndex !== targetIdentifierPredicate.parameterIndex) {
            if (reportErrors) {
              errorReporter(ts.Diagnostics.Parameter_0_is_not_in_the_same_position_as_parameter_1, sourceIdentifierPredicate.parameterName, targetIdentifierPredicate.parameterName);
              errorReporter(ts.Diagnostics.Type_predicate_0_is_not_assignable_to_1, typePredicateToString(source), typePredicateToString(target));
            }
            return 0;
          }
        }
        var related = compareTypes(source.type, target.type, reportErrors);
        if (related === 0 && reportErrors) {
          errorReporter(ts.Diagnostics.Type_predicate_0_is_not_assignable_to_1, typePredicateToString(source), typePredicateToString(target));
        }
        return related;
      }
      function isImplementationCompatibleWithOverload(implementation, overload) {
        var erasedSource = getErasedSignature(implementation);
        var erasedTarget = getErasedSignature(overload);
        var sourceReturnType = getReturnTypeOfSignature(erasedSource);
        var targetReturnType = getReturnTypeOfSignature(erasedTarget);
        if (targetReturnType === voidType || checkTypeRelatedTo(targetReturnType, sourceReturnType, assignableRelation, undefined) || checkTypeRelatedTo(sourceReturnType, targetReturnType, assignableRelation, undefined)) {
          return isSignatureAssignableTo(erasedSource, erasedTarget, true);
        }
        return false;
      }
      function getNumNonRestParameters(signature) {
        var numParams = signature.parameters.length;
        return signature.hasRestParameter ? numParams - 1 : numParams;
      }
      function getNumParametersToCheckForSignatureRelatability(source, sourceNonRestParamCount, target, targetNonRestParamCount) {
        if (source.hasRestParameter === target.hasRestParameter) {
          if (source.hasRestParameter) {
            return Math.max(sourceNonRestParamCount, targetNonRestParamCount) + 1;
          } else {
            return Math.min(sourceNonRestParamCount, targetNonRestParamCount);
          }
        } else {
          return source.hasRestParameter ? targetNonRestParamCount : sourceNonRestParamCount;
        }
      }
      function checkTypeRelatedTo(source, target, relation, errorNode, headMessage, containingMessageChain) {
        var errorInfo;
        var sourceStack;
        var targetStack;
        var maybeStack;
        var expandingFlags;
        var depth = 0;
        var overflow = false;
        ts.Debug.assert(relation !== identityRelation || !errorNode, "no error reporting in identity checking");
        var result = isRelatedTo(source, target, !!errorNode, headMessage);
        if (overflow) {
          error(errorNode, ts.Diagnostics.Excessive_stack_depth_comparing_types_0_and_1, typeToString(source), typeToString(target));
        } else if (errorInfo) {
          if (containingMessageChain) {
            errorInfo = ts.concatenateDiagnosticMessageChains(containingMessageChain, errorInfo);
          }
          diagnostics.add(ts.createDiagnosticForNodeFromMessageChain(errorNode, errorInfo));
        }
        return result !== 0;
        function reportError(message, arg0, arg1, arg2) {
          ts.Debug.assert(!!errorNode);
          errorInfo = ts.chainDiagnosticMessages(errorInfo, message, arg0, arg1, arg2);
        }
        function reportRelationError(message, source, target) {
          var sourceType = typeToString(source);
          var targetType = typeToString(target);
          if (sourceType === targetType) {
            sourceType = typeToString(source, undefined, 128);
            targetType = typeToString(target, undefined, 128);
          }
          reportError(message || ts.Diagnostics.Type_0_is_not_assignable_to_type_1, sourceType, targetType);
        }
        function isRelatedTo(source, target, reportErrors, headMessage) {
          var result;
          if (source === target)
            return -1;
          if (relation === identityRelation) {
            return isIdenticalTo(source, target);
          }
          if (isTypeAny(target))
            return -1;
          if (source === undefinedType)
            return -1;
          if (source === nullType && target !== undefinedType)
            return -1;
          if (source.flags & 128 && target === numberType)
            return -1;
          if (source.flags & 128 && target.flags & 128) {
            if (result = enumRelatedTo(source, target)) {
              return result;
            }
          }
          if (source.flags & 256 && target === stringType)
            return -1;
          if (relation === assignableRelation) {
            if (isTypeAny(source))
              return -1;
            if (source === numberType && target.flags & 128)
              return -1;
          }
          if (source.flags & 8 && target.flags & 8) {
            return -1;
          }
          if (source.flags & 1048576) {
            if (hasExcessProperties(source, target, reportErrors)) {
              if (reportErrors) {
                reportRelationError(headMessage, source, target);
              }
              return 0;
            }
            if (target.flags & 49152) {
              source = getRegularTypeOfObjectLiteral(source);
            }
          }
          var saveErrorInfo = errorInfo;
          if (source.flags & 16384) {
            if (result = eachTypeRelatedToType(source, target, reportErrors)) {
              return result;
            }
          } else if (target.flags & 32768) {
            if (result = typeRelatedToEachType(source, target, reportErrors)) {
              return result;
            }
          } else {
            if (source.flags & 32768) {
              if (result = someTypeRelatedToType(source, target, reportErrors && !(target.flags & 16384))) {
                return result;
              }
            }
            if (target.flags & 16384) {
              if (result = typeRelatedToSomeType(source, target, reportErrors)) {
                return result;
              }
            }
          }
          if (source.flags & 512) {
            var constraint = getConstraintOfTypeParameter(source);
            if (!constraint || constraint.flags & 1) {
              constraint = emptyObjectType;
            }
            var reportConstraintErrors = reportErrors && constraint !== emptyObjectType;
            if (result = isRelatedTo(constraint, target, reportConstraintErrors)) {
              errorInfo = saveErrorInfo;
              return result;
            }
          } else {
            if (source.flags & 4096 && target.flags & 4096 && source.target === target.target) {
              if (result = typeArgumentsRelatedTo(source, target, reportErrors)) {
                return result;
              }
            }
            var apparentSource = getApparentType(source);
            if (apparentSource.flags & (80896 | 32768) && target.flags & 80896) {
              var reportStructuralErrors = reportErrors && errorInfo === saveErrorInfo && !(source.flags & 16777726);
              if (result = objectTypeRelatedTo(apparentSource, source, target, reportStructuralErrors)) {
                errorInfo = saveErrorInfo;
                return result;
              }
            }
          }
          if (reportErrors) {
            reportRelationError(headMessage, source, target);
          }
          return 0;
        }
        function isIdenticalTo(source, target) {
          var result;
          if (source.flags & 80896 && target.flags & 80896) {
            if (source.flags & 4096 && target.flags & 4096 && source.target === target.target) {
              if (result = typeArgumentsRelatedTo(source, target, false)) {
                return result;
              }
            }
            return objectTypeRelatedTo(source, source, target, false);
          }
          if (source.flags & 16384 && target.flags & 16384 || source.flags & 32768 && target.flags & 32768) {
            if (result = eachTypeRelatedToSomeType(source, target)) {
              if (result &= eachTypeRelatedToSomeType(target, source)) {
                return result;
              }
            }
          }
          return 0;
        }
        function isKnownProperty(type, name) {
          if (type.flags & 80896) {
            var resolved = resolveStructuredTypeMembers(type);
            if (relation === assignableRelation && (type === globalObjectType || resolved.properties.length === 0) || resolved.stringIndexType || resolved.numberIndexType || getPropertyOfType(type, name)) {
              return true;
            }
          } else if (type.flags & 49152) {
            for (var _i = 0,
                _a = type.types; _i < _a.length; _i++) {
              var t = _a[_i];
              if (isKnownProperty(t, name)) {
                return true;
              }
            }
          }
          return false;
        }
        function hasExcessProperties(source, target, reportErrors) {
          if (!(target.flags & 67108864) && someConstituentTypeHasKind(target, 80896)) {
            for (var _i = 0,
                _a = getPropertiesOfObjectType(source); _i < _a.length; _i++) {
              var prop = _a[_i];
              if (!isKnownProperty(target, prop.name)) {
                if (reportErrors) {
                  ts.Debug.assert(!!errorNode);
                  errorNode = prop.valueDeclaration;
                  reportError(ts.Diagnostics.Object_literal_may_only_specify_known_properties_and_0_does_not_exist_in_type_1, symbolToString(prop), typeToString(target));
                }
                return true;
              }
            }
          }
          return false;
        }
        function eachTypeRelatedToSomeType(source, target) {
          var result = -1;
          var sourceTypes = source.types;
          for (var _i = 0,
              sourceTypes_1 = sourceTypes; _i < sourceTypes_1.length; _i++) {
            var sourceType = sourceTypes_1[_i];
            var related = typeRelatedToSomeType(sourceType, target, false);
            if (!related) {
              return 0;
            }
            result &= related;
          }
          return result;
        }
        function typeRelatedToSomeType(source, target, reportErrors) {
          var targetTypes = target.types;
          for (var i = 0,
              len = targetTypes.length; i < len; i++) {
            var related = isRelatedTo(source, targetTypes[i], reportErrors && i === len - 1);
            if (related) {
              return related;
            }
          }
          return 0;
        }
        function typeRelatedToEachType(source, target, reportErrors) {
          var result = -1;
          var targetTypes = target.types;
          for (var _i = 0,
              targetTypes_1 = targetTypes; _i < targetTypes_1.length; _i++) {
            var targetType = targetTypes_1[_i];
            var related = isRelatedTo(source, targetType, reportErrors);
            if (!related) {
              return 0;
            }
            result &= related;
          }
          return result;
        }
        function someTypeRelatedToType(source, target, reportErrors) {
          var sourceTypes = source.types;
          for (var i = 0,
              len = sourceTypes.length; i < len; i++) {
            var related = isRelatedTo(sourceTypes[i], target, reportErrors && i === len - 1);
            if (related) {
              return related;
            }
          }
          return 0;
        }
        function eachTypeRelatedToType(source, target, reportErrors) {
          var result = -1;
          var sourceTypes = source.types;
          for (var _i = 0,
              sourceTypes_2 = sourceTypes; _i < sourceTypes_2.length; _i++) {
            var sourceType = sourceTypes_2[_i];
            var related = isRelatedTo(sourceType, target, reportErrors);
            if (!related) {
              return 0;
            }
            result &= related;
          }
          return result;
        }
        function typeArgumentsRelatedTo(source, target, reportErrors) {
          var sources = source.typeArguments || emptyArray;
          var targets = target.typeArguments || emptyArray;
          if (sources.length !== targets.length && relation === identityRelation) {
            return 0;
          }
          var length = sources.length <= targets.length ? sources.length : targets.length;
          var result = -1;
          for (var i = 0; i < length; i++) {
            var related = isRelatedTo(sources[i], targets[i], reportErrors);
            if (!related) {
              return 0;
            }
            result &= related;
          }
          return result;
        }
        function objectTypeRelatedTo(source, originalSource, target, reportErrors) {
          if (overflow) {
            return 0;
          }
          var id = relation !== identityRelation || source.id < target.id ? source.id + "," + target.id : target.id + "," + source.id;
          var related = relation[id];
          if (related !== undefined) {
            if (reportErrors && related === 2) {
              relation[id] = 3;
            } else {
              return related === 1 ? -1 : 0;
            }
          }
          if (depth > 0) {
            for (var i = 0; i < depth; i++) {
              if (maybeStack[i][id]) {
                return 1;
              }
            }
            if (depth === 100) {
              overflow = true;
              return 0;
            }
          } else {
            sourceStack = [];
            targetStack = [];
            maybeStack = [];
            expandingFlags = 0;
          }
          sourceStack[depth] = source;
          targetStack[depth] = target;
          maybeStack[depth] = {};
          maybeStack[depth][id] = 1;
          depth++;
          var saveExpandingFlags = expandingFlags;
          if (!(expandingFlags & 1) && isDeeplyNestedGeneric(source, sourceStack, depth))
            expandingFlags |= 1;
          if (!(expandingFlags & 2) && isDeeplyNestedGeneric(target, targetStack, depth))
            expandingFlags |= 2;
          var result;
          if (expandingFlags === 3) {
            result = 1;
          } else {
            result = propertiesRelatedTo(source, target, reportErrors);
            if (result) {
              result &= signaturesRelatedTo(source, target, 0, reportErrors);
              if (result) {
                result &= signaturesRelatedTo(source, target, 1, reportErrors);
                if (result) {
                  result &= stringIndexTypesRelatedTo(source, originalSource, target, reportErrors);
                  if (result) {
                    result &= numberIndexTypesRelatedTo(source, originalSource, target, reportErrors);
                  }
                }
              }
            }
          }
          expandingFlags = saveExpandingFlags;
          depth--;
          if (result) {
            var maybeCache = maybeStack[depth];
            var destinationCache = (result === -1 || depth === 0) ? relation : maybeStack[depth - 1];
            ts.copyMap(maybeCache, destinationCache);
          } else {
            relation[id] = reportErrors ? 3 : 2;
          }
          return result;
        }
        function propertiesRelatedTo(source, target, reportErrors) {
          if (relation === identityRelation) {
            return propertiesIdenticalTo(source, target);
          }
          var result = -1;
          var properties = getPropertiesOfObjectType(target);
          var requireOptionalProperties = relation === subtypeRelation && !(source.flags & 524288);
          for (var _i = 0,
              properties_1 = properties; _i < properties_1.length; _i++) {
            var targetProp = properties_1[_i];
            var sourceProp = getPropertyOfType(source, targetProp.name);
            if (sourceProp !== targetProp) {
              if (!sourceProp) {
                if (!(targetProp.flags & 536870912) || requireOptionalProperties) {
                  if (reportErrors) {
                    reportError(ts.Diagnostics.Property_0_is_missing_in_type_1, symbolToString(targetProp), typeToString(source));
                  }
                  return 0;
                }
              } else if (!(targetProp.flags & 134217728)) {
                var sourcePropFlags = getDeclarationFlagsFromSymbol(sourceProp);
                var targetPropFlags = getDeclarationFlagsFromSymbol(targetProp);
                if (sourcePropFlags & 16 || targetPropFlags & 16) {
                  if (sourceProp.valueDeclaration !== targetProp.valueDeclaration) {
                    if (reportErrors) {
                      if (sourcePropFlags & 16 && targetPropFlags & 16) {
                        reportError(ts.Diagnostics.Types_have_separate_declarations_of_a_private_property_0, symbolToString(targetProp));
                      } else {
                        reportError(ts.Diagnostics.Property_0_is_private_in_type_1_but_not_in_type_2, symbolToString(targetProp), typeToString(sourcePropFlags & 16 ? source : target), typeToString(sourcePropFlags & 16 ? target : source));
                      }
                    }
                    return 0;
                  }
                } else if (targetPropFlags & 32) {
                  var sourceDeclaredInClass = sourceProp.parent && sourceProp.parent.flags & 32;
                  var sourceClass = sourceDeclaredInClass ? getDeclaredTypeOfSymbol(getParentOfSymbol(sourceProp)) : undefined;
                  var targetClass = getDeclaredTypeOfSymbol(getParentOfSymbol(targetProp));
                  if (!sourceClass || !hasBaseType(sourceClass, targetClass)) {
                    if (reportErrors) {
                      reportError(ts.Diagnostics.Property_0_is_protected_but_type_1_is_not_a_class_derived_from_2, symbolToString(targetProp), typeToString(sourceClass || source), typeToString(targetClass));
                    }
                    return 0;
                  }
                } else if (sourcePropFlags & 32) {
                  if (reportErrors) {
                    reportError(ts.Diagnostics.Property_0_is_protected_in_type_1_but_public_in_type_2, symbolToString(targetProp), typeToString(source), typeToString(target));
                  }
                  return 0;
                }
                var related = isRelatedTo(getTypeOfSymbol(sourceProp), getTypeOfSymbol(targetProp), reportErrors);
                if (!related) {
                  if (reportErrors) {
                    reportError(ts.Diagnostics.Types_of_property_0_are_incompatible, symbolToString(targetProp));
                  }
                  return 0;
                }
                result &= related;
                if (sourceProp.flags & 536870912 && !(targetProp.flags & 536870912)) {
                  if (reportErrors) {
                    reportError(ts.Diagnostics.Property_0_is_optional_in_type_1_but_required_in_type_2, symbolToString(targetProp), typeToString(source), typeToString(target));
                  }
                  return 0;
                }
              }
            }
          }
          return result;
        }
        function propertiesIdenticalTo(source, target) {
          if (!(source.flags & 80896 && target.flags & 80896)) {
            return 0;
          }
          var sourceProperties = getPropertiesOfObjectType(source);
          var targetProperties = getPropertiesOfObjectType(target);
          if (sourceProperties.length !== targetProperties.length) {
            return 0;
          }
          var result = -1;
          for (var _i = 0,
              sourceProperties_1 = sourceProperties; _i < sourceProperties_1.length; _i++) {
            var sourceProp = sourceProperties_1[_i];
            var targetProp = getPropertyOfObjectType(target, sourceProp.name);
            if (!targetProp) {
              return 0;
            }
            var related = compareProperties(sourceProp, targetProp, isRelatedTo);
            if (!related) {
              return 0;
            }
            result &= related;
          }
          return result;
        }
        function signaturesRelatedTo(source, target, kind, reportErrors) {
          if (relation === identityRelation) {
            return signaturesIdenticalTo(source, target, kind);
          }
          if (target === anyFunctionType || source === anyFunctionType) {
            return -1;
          }
          var sourceSignatures = getSignaturesOfType(source, kind);
          var targetSignatures = getSignaturesOfType(target, kind);
          if (kind === 1 && sourceSignatures.length && targetSignatures.length && isAbstractConstructorType(source) && !isAbstractConstructorType(target)) {
            if (reportErrors) {
              reportError(ts.Diagnostics.Cannot_assign_an_abstract_constructor_type_to_a_non_abstract_constructor_type);
            }
            return 0;
          }
          var result = -1;
          var saveErrorInfo = errorInfo;
          outer: for (var _i = 0,
              targetSignatures_1 = targetSignatures; _i < targetSignatures_1.length; _i++) {
            var t = targetSignatures_1[_i];
            if (!t.hasStringLiterals || target.flags & 262144) {
              var shouldElaborateErrors = reportErrors;
              for (var _a = 0,
                  sourceSignatures_1 = sourceSignatures; _a < sourceSignatures_1.length; _a++) {
                var s = sourceSignatures_1[_a];
                if (!s.hasStringLiterals || source.flags & 262144) {
                  var related = signatureRelatedTo(s, t, shouldElaborateErrors);
                  if (related) {
                    result &= related;
                    errorInfo = saveErrorInfo;
                    continue outer;
                  }
                  shouldElaborateErrors = false;
                }
              }
              if (shouldElaborateErrors) {
                reportError(ts.Diagnostics.Type_0_provides_no_match_for_the_signature_1, typeToString(source), signatureToString(t, undefined, undefined, kind));
              }
              return 0;
            }
          }
          return result;
        }
        function signatureRelatedTo(source, target, reportErrors) {
          return compareSignaturesRelated(source, target, false, reportErrors, reportError, isRelatedTo);
        }
        function signaturesIdenticalTo(source, target, kind) {
          var sourceSignatures = getSignaturesOfType(source, kind);
          var targetSignatures = getSignaturesOfType(target, kind);
          if (sourceSignatures.length !== targetSignatures.length) {
            return 0;
          }
          var result = -1;
          for (var i = 0,
              len = sourceSignatures.length; i < len; i++) {
            var related = compareSignaturesIdentical(sourceSignatures[i], targetSignatures[i], false, false, isRelatedTo);
            if (!related) {
              return 0;
            }
            result &= related;
          }
          return result;
        }
        function stringIndexTypesRelatedTo(source, originalSource, target, reportErrors) {
          if (relation === identityRelation) {
            return indexTypesIdenticalTo(0, source, target);
          }
          var targetType = getIndexTypeOfType(target, 0);
          if (targetType) {
            if ((targetType.flags & 1) && !(originalSource.flags & 16777726)) {
              return -1;
            }
            var sourceType = getIndexTypeOfType(source, 0);
            if (!sourceType) {
              if (reportErrors) {
                reportError(ts.Diagnostics.Index_signature_is_missing_in_type_0, typeToString(source));
              }
              return 0;
            }
            var related = isRelatedTo(sourceType, targetType, reportErrors);
            if (!related) {
              if (reportErrors) {
                reportError(ts.Diagnostics.Index_signatures_are_incompatible);
              }
              return 0;
            }
            return related;
          }
          return -1;
        }
        function numberIndexTypesRelatedTo(source, originalSource, target, reportErrors) {
          if (relation === identityRelation) {
            return indexTypesIdenticalTo(1, source, target);
          }
          var targetType = getIndexTypeOfType(target, 1);
          if (targetType) {
            if ((targetType.flags & 1) && !(originalSource.flags & 16777726)) {
              return -1;
            }
            var sourceStringType = getIndexTypeOfType(source, 0);
            var sourceNumberType = getIndexTypeOfType(source, 1);
            if (!(sourceStringType || sourceNumberType)) {
              if (reportErrors) {
                reportError(ts.Diagnostics.Index_signature_is_missing_in_type_0, typeToString(source));
              }
              return 0;
            }
            var related = void 0;
            if (sourceStringType && sourceNumberType) {
              related = isRelatedTo(sourceStringType, targetType, false) || isRelatedTo(sourceNumberType, targetType, reportErrors);
            } else {
              related = isRelatedTo(sourceStringType || sourceNumberType, targetType, reportErrors);
            }
            if (!related) {
              if (reportErrors) {
                reportError(ts.Diagnostics.Index_signatures_are_incompatible);
              }
              return 0;
            }
            return related;
          }
          return -1;
        }
        function indexTypesIdenticalTo(indexKind, source, target) {
          var targetType = getIndexTypeOfType(target, indexKind);
          var sourceType = getIndexTypeOfType(source, indexKind);
          if (!sourceType && !targetType) {
            return -1;
          }
          if (sourceType && targetType) {
            return isRelatedTo(sourceType, targetType);
          }
          return 0;
        }
        function enumRelatedTo(source, target) {
          if (source.symbol.name !== target.symbol.name || source.symbol.flags & 128 || target.symbol.flags & 128) {
            return 0;
          }
          var targetEnumType = getTypeOfSymbol(target.symbol);
          for (var _i = 0,
              _a = getPropertiesOfType(getTypeOfSymbol(source.symbol)); _i < _a.length; _i++) {
            var property = _a[_i];
            if (property.flags & 8) {
              var targetProperty = getPropertyOfType(targetEnumType, property.name);
              if (!targetProperty || !(targetProperty.flags & 8)) {
                reportError(ts.Diagnostics.Property_0_is_missing_in_type_1, property.name, typeToString(target, undefined, 128));
                return 0;
              }
            }
          }
          return -1;
        }
      }
      function isAbstractConstructorType(type) {
        if (type.flags & 65536) {
          var symbol = type.symbol;
          if (symbol && symbol.flags & 32) {
            var declaration = getClassLikeDeclarationOfSymbol(symbol);
            if (declaration && declaration.flags & 128) {
              return true;
            }
          }
        }
        return false;
      }
      function isDeeplyNestedGeneric(type, stack, depth) {
        if (type.flags & (4096 | 131072) && depth >= 5) {
          var symbol = type.symbol;
          var count = 0;
          for (var i = 0; i < depth; i++) {
            var t = stack[i];
            if (t.flags & (4096 | 131072) && t.symbol === symbol) {
              count++;
              if (count >= 5)
                return true;
            }
          }
        }
        return false;
      }
      function isPropertyIdenticalTo(sourceProp, targetProp) {
        return compareProperties(sourceProp, targetProp, compareTypesIdentical) !== 0;
      }
      function compareProperties(sourceProp, targetProp, compareTypes) {
        if (sourceProp === targetProp) {
          return -1;
        }
        var sourcePropAccessibility = getDeclarationFlagsFromSymbol(sourceProp) & (16 | 32);
        var targetPropAccessibility = getDeclarationFlagsFromSymbol(targetProp) & (16 | 32);
        if (sourcePropAccessibility !== targetPropAccessibility) {
          return 0;
        }
        if (sourcePropAccessibility) {
          if (getTargetSymbol(sourceProp) !== getTargetSymbol(targetProp)) {
            return 0;
          }
        } else {
          if ((sourceProp.flags & 536870912) !== (targetProp.flags & 536870912)) {
            return 0;
          }
        }
        return compareTypes(getTypeOfSymbol(sourceProp), getTypeOfSymbol(targetProp));
      }
      function isMatchingSignature(source, target, partialMatch) {
        if (source.parameters.length === target.parameters.length && source.minArgumentCount === target.minArgumentCount && source.hasRestParameter === target.hasRestParameter) {
          return true;
        }
        if (partialMatch && source.minArgumentCount <= target.minArgumentCount && (source.hasRestParameter && !target.hasRestParameter || source.hasRestParameter === target.hasRestParameter && source.parameters.length >= target.parameters.length)) {
          return true;
        }
        return false;
      }
      function compareSignaturesIdentical(source, target, partialMatch, ignoreReturnTypes, compareTypes) {
        if (source === target) {
          return -1;
        }
        if (!(isMatchingSignature(source, target, partialMatch))) {
          return 0;
        }
        if ((source.typeParameters ? source.typeParameters.length : 0) !== (target.typeParameters ? target.typeParameters.length : 0)) {
          return 0;
        }
        source = getErasedSignature(source);
        target = getErasedSignature(target);
        var result = -1;
        var targetLen = target.parameters.length;
        for (var i = 0; i < targetLen; i++) {
          var s = isRestParameterIndex(source, i) ? getRestTypeOfSignature(source) : getTypeOfSymbol(source.parameters[i]);
          var t = isRestParameterIndex(target, i) ? getRestTypeOfSignature(target) : getTypeOfSymbol(target.parameters[i]);
          var related = compareTypes(s, t);
          if (!related) {
            return 0;
          }
          result &= related;
        }
        if (!ignoreReturnTypes) {
          result &= compareTypes(getReturnTypeOfSignature(source), getReturnTypeOfSignature(target));
        }
        return result;
      }
      function isRestParameterIndex(signature, parameterIndex) {
        return signature.hasRestParameter && parameterIndex >= signature.parameters.length - 1;
      }
      function isSupertypeOfEach(candidate, types) {
        for (var _i = 0,
            types_6 = types; _i < types_6.length; _i++) {
          var type = types_6[_i];
          if (candidate !== type && !isTypeSubtypeOf(type, candidate))
            return false;
        }
        return true;
      }
      function getCommonSupertype(types) {
        return ts.forEach(types, function(t) {
          return isSupertypeOfEach(t, types) ? t : undefined;
        });
      }
      function reportNoCommonSupertypeError(types, errorLocation, errorMessageChainHead) {
        var bestSupertype;
        var bestSupertypeDownfallType;
        var bestSupertypeScore = 0;
        for (var i = 0; i < types.length; i++) {
          var score = 0;
          var downfallType = undefined;
          for (var j = 0; j < types.length; j++) {
            if (isTypeSubtypeOf(types[j], types[i])) {
              score++;
            } else if (!downfallType) {
              downfallType = types[j];
            }
          }
          ts.Debug.assert(!!downfallType, "If there is no common supertype, each type should have a downfallType");
          if (score > bestSupertypeScore) {
            bestSupertype = types[i];
            bestSupertypeDownfallType = downfallType;
            bestSupertypeScore = score;
          }
          if (bestSupertypeScore === types.length - 1) {
            break;
          }
        }
        checkTypeSubtypeOf(bestSupertypeDownfallType, bestSupertype, errorLocation, ts.Diagnostics.Type_argument_candidate_1_is_not_a_valid_type_argument_because_it_is_not_a_supertype_of_candidate_0, errorMessageChainHead);
      }
      function isArrayType(type) {
        return type.flags & 4096 && type.target === globalArrayType;
      }
      function isArrayLikeType(type) {
        return !(type.flags & (32 | 64)) && isTypeAssignableTo(type, anyArrayType);
      }
      function isTupleLikeType(type) {
        return !!getPropertyOfType(type, "0");
      }
      function isStringLiteralType(type) {
        return type.flags & 256;
      }
      function isTupleType(type) {
        return !!(type.flags & 8192);
      }
      function getRegularTypeOfObjectLiteral(type) {
        if (type.flags & 1048576) {
          var regularType = type.regularType;
          if (!regularType) {
            regularType = createType(type.flags & ~1048576);
            regularType.symbol = type.symbol;
            regularType.members = type.members;
            regularType.properties = type.properties;
            regularType.callSignatures = type.callSignatures;
            regularType.constructSignatures = type.constructSignatures;
            regularType.stringIndexType = type.stringIndexType;
            regularType.numberIndexType = type.numberIndexType;
            type.regularType = regularType;
          }
          return regularType;
        }
        return type;
      }
      function getWidenedTypeOfObjectLiteral(type) {
        var properties = getPropertiesOfObjectType(type);
        var members = {};
        ts.forEach(properties, function(p) {
          var propType = getTypeOfSymbol(p);
          var widenedType = getWidenedType(propType);
          if (propType !== widenedType) {
            var symbol = createSymbol(p.flags | 67108864, p.name);
            symbol.declarations = p.declarations;
            symbol.parent = p.parent;
            symbol.type = widenedType;
            symbol.target = p;
            if (p.valueDeclaration)
              symbol.valueDeclaration = p.valueDeclaration;
            p = symbol;
          }
          members[p.name] = p;
        });
        var stringIndexType = getIndexTypeOfType(type, 0);
        var numberIndexType = getIndexTypeOfType(type, 1);
        if (stringIndexType)
          stringIndexType = getWidenedType(stringIndexType);
        if (numberIndexType)
          numberIndexType = getWidenedType(numberIndexType);
        return createAnonymousType(type.symbol, members, emptyArray, emptyArray, stringIndexType, numberIndexType);
      }
      function getWidenedType(type) {
        if (type.flags & 6291456) {
          if (type.flags & (32 | 64)) {
            return anyType;
          }
          if (type.flags & 524288) {
            return getWidenedTypeOfObjectLiteral(type);
          }
          if (type.flags & 16384) {
            return getUnionType(ts.map(type.types, getWidenedType), true);
          }
          if (isArrayType(type)) {
            return createArrayType(getWidenedType(type.typeArguments[0]));
          }
          if (isTupleType(type)) {
            return createTupleType(ts.map(type.elementTypes, getWidenedType));
          }
        }
        return type;
      }
      function reportWideningErrorsInType(type) {
        var errorReported = false;
        if (type.flags & 16384) {
          for (var _i = 0,
              _a = type.types; _i < _a.length; _i++) {
            var t = _a[_i];
            if (reportWideningErrorsInType(t)) {
              errorReported = true;
            }
          }
        }
        if (isArrayType(type)) {
          return reportWideningErrorsInType(type.typeArguments[0]);
        }
        if (isTupleType(type)) {
          for (var _b = 0,
              _c = type.elementTypes; _b < _c.length; _b++) {
            var t = _c[_b];
            if (reportWideningErrorsInType(t)) {
              errorReported = true;
            }
          }
        }
        if (type.flags & 524288) {
          for (var _d = 0,
              _e = getPropertiesOfObjectType(type); _d < _e.length; _d++) {
            var p = _e[_d];
            var t = getTypeOfSymbol(p);
            if (t.flags & 2097152) {
              if (!reportWideningErrorsInType(t)) {
                error(p.valueDeclaration, ts.Diagnostics.Object_literal_s_property_0_implicitly_has_an_1_type, p.name, typeToString(getWidenedType(t)));
              }
              errorReported = true;
            }
          }
        }
        return errorReported;
      }
      function reportImplicitAnyError(declaration, type) {
        var typeAsString = typeToString(getWidenedType(type));
        var diagnostic;
        switch (declaration.kind) {
          case 142:
          case 141:
            diagnostic = ts.Diagnostics.Member_0_implicitly_has_an_1_type;
            break;
          case 139:
            diagnostic = declaration.dotDotDotToken ? ts.Diagnostics.Rest_parameter_0_implicitly_has_an_any_type : ts.Diagnostics.Parameter_0_implicitly_has_an_1_type;
            break;
          case 216:
          case 144:
          case 143:
          case 146:
          case 147:
          case 176:
          case 177:
            if (!declaration.name) {
              error(declaration, ts.Diagnostics.Function_expression_which_lacks_return_type_annotation_implicitly_has_an_0_return_type, typeAsString);
              return;
            }
            diagnostic = ts.Diagnostics._0_which_lacks_return_type_annotation_implicitly_has_an_1_return_type;
            break;
          default:
            diagnostic = ts.Diagnostics.Variable_0_implicitly_has_an_1_type;
        }
        error(declaration, diagnostic, ts.declarationNameToString(declaration.name), typeAsString);
      }
      function reportErrorsFromWidening(declaration, type) {
        if (produceDiagnostics && compilerOptions.noImplicitAny && type.flags & 2097152) {
          if (!reportWideningErrorsInType(type)) {
            reportImplicitAnyError(declaration, type);
          }
        }
      }
      function forEachMatchingParameterType(source, target, callback) {
        var sourceMax = source.parameters.length;
        var targetMax = target.parameters.length;
        var count;
        if (source.hasRestParameter && target.hasRestParameter) {
          count = sourceMax > targetMax ? sourceMax : targetMax;
          sourceMax--;
          targetMax--;
        } else if (source.hasRestParameter) {
          sourceMax--;
          count = targetMax;
        } else if (target.hasRestParameter) {
          targetMax--;
          count = sourceMax;
        } else {
          count = sourceMax < targetMax ? sourceMax : targetMax;
        }
        for (var i = 0; i < count; i++) {
          var s = i < sourceMax ? getTypeOfSymbol(source.parameters[i]) : getRestTypeOfSignature(source);
          var t = i < targetMax ? getTypeOfSymbol(target.parameters[i]) : getRestTypeOfSignature(target);
          callback(s, t);
        }
      }
      function createInferenceContext(typeParameters, inferUnionTypes) {
        var inferences = ts.map(typeParameters, createTypeInferencesObject);
        return {
          typeParameters: typeParameters,
          inferUnionTypes: inferUnionTypes,
          inferences: inferences,
          inferredTypes: new Array(typeParameters.length)
        };
      }
      function createTypeInferencesObject() {
        return {
          primary: undefined,
          secondary: undefined,
          isFixed: false
        };
      }
      function inferTypes(context, source, target) {
        var sourceStack;
        var targetStack;
        var maxDepth = 5;
        var depth = 0;
        var inferiority = 0;
        var visited = {};
        inferFromTypes(source, target);
        function isInProcess(source, target) {
          for (var i = 0; i < depth; i++) {
            if (source === sourceStack[i] && target === targetStack[i]) {
              return true;
            }
          }
          return false;
        }
        function inferFromTypes(source, target) {
          if (source.flags & 16384 && target.flags & 16384 || source.flags & 32768 && target.flags & 32768) {
            var matchingTypes = void 0;
            for (var _i = 0,
                _a = target.types; _i < _a.length; _i++) {
              var t = _a[_i];
              if (typeIdenticalToSomeType(t, source.types)) {
                (matchingTypes || (matchingTypes = [])).push(t);
                inferFromTypes(t, t);
              }
            }
            if (matchingTypes) {
              source = removeTypesFromUnionOrIntersection(source, matchingTypes);
              target = removeTypesFromUnionOrIntersection(target, matchingTypes);
            }
          }
          if (target.flags & 512) {
            if (source.flags & 8388608) {
              return;
            }
            var typeParameters = context.typeParameters;
            for (var i = 0; i < typeParameters.length; i++) {
              if (target === typeParameters[i]) {
                var inferences = context.inferences[i];
                if (!inferences.isFixed) {
                  var candidates = inferiority ? inferences.secondary || (inferences.secondary = []) : inferences.primary || (inferences.primary = []);
                  if (!ts.contains(candidates, source)) {
                    candidates.push(source);
                  }
                }
                return;
              }
            }
          } else if (source.flags & 4096 && target.flags & 4096 && source.target === target.target) {
            var sourceTypes = source.typeArguments || emptyArray;
            var targetTypes = target.typeArguments || emptyArray;
            var count = sourceTypes.length < targetTypes.length ? sourceTypes.length : targetTypes.length;
            for (var i = 0; i < count; i++) {
              inferFromTypes(sourceTypes[i], targetTypes[i]);
            }
          } else if (source.flags & 8192 && target.flags & 8192 && source.elementTypes.length === target.elementTypes.length) {
            var sourceTypes = source.elementTypes;
            var targetTypes = target.elementTypes;
            for (var i = 0; i < sourceTypes.length; i++) {
              inferFromTypes(sourceTypes[i], targetTypes[i]);
            }
          } else if (target.flags & 49152) {
            var targetTypes = target.types;
            var typeParameterCount = 0;
            var typeParameter = void 0;
            for (var _b = 0,
                targetTypes_2 = targetTypes; _b < targetTypes_2.length; _b++) {
              var t = targetTypes_2[_b];
              if (t.flags & 512 && ts.contains(context.typeParameters, t)) {
                typeParameter = t;
                typeParameterCount++;
              } else {
                inferFromTypes(source, t);
              }
            }
            if (target.flags & 16384 && typeParameterCount === 1) {
              inferiority++;
              inferFromTypes(source, typeParameter);
              inferiority--;
            }
          } else if (source.flags & 49152) {
            var sourceTypes = source.types;
            for (var _c = 0,
                sourceTypes_3 = sourceTypes; _c < sourceTypes_3.length; _c++) {
              var sourceType = sourceTypes_3[_c];
              inferFromTypes(sourceType, target);
            }
          } else {
            source = getApparentType(source);
            if (source.flags & 80896 && (target.flags & 4096 && target.typeArguments || target.flags & 8192 || target.flags & 65536 && target.symbol && target.symbol.flags & (8192 | 2048 | 32))) {
              if (isInProcess(source, target)) {
                return;
              }
              if (depth > maxDepth) {
                return;
              }
              if (isDeeplyNestedGeneric(source, sourceStack, depth) && isDeeplyNestedGeneric(target, targetStack, depth)) {
                return;
              }
              var key = source.id + "," + target.id;
              if (ts.hasProperty(visited, key)) {
                return;
              }
              visited[key] = true;
              if (depth === 0) {
                sourceStack = [];
                targetStack = [];
              }
              sourceStack[depth] = source;
              targetStack[depth] = target;
              depth++;
              inferFromProperties(source, target);
              inferFromSignatures(source, target, 0);
              inferFromSignatures(source, target, 1);
              inferFromIndexTypes(source, target, 0, 0);
              inferFromIndexTypes(source, target, 1, 1);
              inferFromIndexTypes(source, target, 0, 1);
              depth--;
            }
          }
        }
        function inferFromProperties(source, target) {
          var properties = getPropertiesOfObjectType(target);
          for (var _i = 0,
              properties_2 = properties; _i < properties_2.length; _i++) {
            var targetProp = properties_2[_i];
            var sourceProp = getPropertyOfObjectType(source, targetProp.name);
            if (sourceProp) {
              inferFromTypes(getTypeOfSymbol(sourceProp), getTypeOfSymbol(targetProp));
            }
          }
        }
        function inferFromSignatures(source, target, kind) {
          var sourceSignatures = getSignaturesOfType(source, kind);
          var targetSignatures = getSignaturesOfType(target, kind);
          var sourceLen = sourceSignatures.length;
          var targetLen = targetSignatures.length;
          var len = sourceLen < targetLen ? sourceLen : targetLen;
          for (var i = 0; i < len; i++) {
            inferFromSignature(getErasedSignature(sourceSignatures[sourceLen - len + i]), getErasedSignature(targetSignatures[targetLen - len + i]));
          }
        }
        function inferFromSignature(source, target) {
          forEachMatchingParameterType(source, target, inferFromTypes);
          if (source.typePredicate && target.typePredicate && source.typePredicate.kind === target.typePredicate.kind) {
            inferFromTypes(source.typePredicate.type, target.typePredicate.type);
          } else {
            inferFromTypes(getReturnTypeOfSignature(source), getReturnTypeOfSignature(target));
          }
        }
        function inferFromIndexTypes(source, target, sourceKind, targetKind) {
          var targetIndexType = getIndexTypeOfType(target, targetKind);
          if (targetIndexType) {
            var sourceIndexType = getIndexTypeOfType(source, sourceKind);
            if (sourceIndexType) {
              inferFromTypes(sourceIndexType, targetIndexType);
            }
          }
        }
      }
      function typeIdenticalToSomeType(type, types) {
        for (var _i = 0,
            types_7 = types; _i < types_7.length; _i++) {
          var t = types_7[_i];
          if (isTypeIdenticalTo(t, type)) {
            return true;
          }
        }
        return false;
      }
      function removeTypesFromUnionOrIntersection(type, typesToRemove) {
        var reducedTypes = [];
        for (var _i = 0,
            _a = type.types; _i < _a.length; _i++) {
          var t = _a[_i];
          if (!typeIdenticalToSomeType(t, typesToRemove)) {
            reducedTypes.push(t);
          }
        }
        return type.flags & 16384 ? getUnionType(reducedTypes, true) : getIntersectionType(reducedTypes);
      }
      function getInferenceCandidates(context, index) {
        var inferences = context.inferences[index];
        return inferences.primary || inferences.secondary || emptyArray;
      }
      function getInferredType(context, index) {
        var inferredType = context.inferredTypes[index];
        var inferenceSucceeded;
        if (!inferredType) {
          var inferences = getInferenceCandidates(context, index);
          if (inferences.length) {
            var unionOrSuperType = context.inferUnionTypes ? getUnionType(inferences) : getCommonSupertype(inferences);
            inferredType = unionOrSuperType ? getWidenedType(unionOrSuperType) : unknownType;
            inferenceSucceeded = !!unionOrSuperType;
          } else {
            inferredType = emptyObjectType;
            inferenceSucceeded = true;
          }
          context.inferredTypes[index] = inferredType;
          if (inferenceSucceeded) {
            var constraint = getConstraintOfTypeParameter(context.typeParameters[index]);
            if (constraint) {
              var instantiatedConstraint = instantiateType(constraint, getInferenceMapper(context));
              if (!isTypeAssignableTo(inferredType, getTypeWithThisArgument(instantiatedConstraint, inferredType))) {
                context.inferredTypes[index] = inferredType = instantiatedConstraint;
              }
            }
          } else if (context.failedTypeParameterIndex === undefined || context.failedTypeParameterIndex > index) {
            context.failedTypeParameterIndex = index;
          }
        }
        return inferredType;
      }
      function getInferredTypes(context) {
        for (var i = 0; i < context.inferredTypes.length; i++) {
          getInferredType(context, i);
        }
        return context.inferredTypes;
      }
      function getResolvedSymbol(node) {
        var links = getNodeLinks(node);
        if (!links.resolvedSymbol) {
          links.resolvedSymbol = (!ts.nodeIsMissing(node) && resolveName(node, node.text, 107455 | 1048576, ts.Diagnostics.Cannot_find_name_0, node)) || unknownSymbol;
        }
        return links.resolvedSymbol;
      }
      function isInTypeQuery(node) {
        while (node) {
          switch (node.kind) {
            case 155:
              return true;
            case 69:
            case 136:
              node = node.parent;
              continue;
            default:
              return false;
          }
        }
        ts.Debug.fail("should not get here");
      }
      function hasInitializer(node) {
        return !!(node.initializer || ts.isBindingPattern(node.parent) && hasInitializer(node.parent.parent));
      }
      function isVariableAssignedWithin(symbol, node) {
        var links = getNodeLinks(node);
        if (links.assignmentChecks) {
          var cachedResult = links.assignmentChecks[symbol.id];
          if (cachedResult !== undefined) {
            return cachedResult;
          }
        } else {
          links.assignmentChecks = {};
        }
        return links.assignmentChecks[symbol.id] = isAssignedIn(node);
        function isAssignedInBinaryExpression(node) {
          if (node.operatorToken.kind >= 56 && node.operatorToken.kind <= 68) {
            var n = skipParenthesizedNodes(node.left);
            if (n.kind === 69 && getResolvedSymbol(n) === symbol) {
              return true;
            }
          }
          return ts.forEachChild(node, isAssignedIn);
        }
        function isAssignedInVariableDeclaration(node) {
          if (!ts.isBindingPattern(node.name) && getSymbolOfNode(node) === symbol && hasInitializer(node)) {
            return true;
          }
          return ts.forEachChild(node, isAssignedIn);
        }
        function isAssignedIn(node) {
          switch (node.kind) {
            case 184:
              return isAssignedInBinaryExpression(node);
            case 214:
            case 166:
              return isAssignedInVariableDeclaration(node);
            case 164:
            case 165:
            case 167:
            case 168:
            case 169:
            case 170:
            case 171:
            case 172:
            case 174:
            case 192:
            case 175:
            case 182:
            case 178:
            case 181:
            case 179:
            case 180:
            case 183:
            case 187:
            case 185:
            case 188:
            case 195:
            case 196:
            case 198:
            case 199:
            case 200:
            case 201:
            case 202:
            case 203:
            case 204:
            case 207:
            case 208:
            case 209:
            case 244:
            case 245:
            case 210:
            case 211:
            case 212:
            case 247:
            case 236:
            case 237:
            case 241:
            case 242:
            case 238:
            case 243:
              return ts.forEachChild(node, isAssignedIn);
          }
          return false;
        }
      }
      function getNarrowedTypeOfSymbol(symbol, node) {
        var type = getTypeOfSymbol(symbol);
        if (node && symbol.flags & 3) {
          if (isTypeAny(type) || type.flags & (80896 | 16384 | 512)) {
            var declaration = ts.getDeclarationOfKind(symbol, 214);
            var top_1 = declaration && getDeclarationContainer(declaration);
            var originalType = type;
            var nodeStack = [];
            loop: while (node.parent) {
              var child = node;
              node = node.parent;
              switch (node.kind) {
                case 199:
                case 185:
                case 184:
                  nodeStack.push({
                    node: node,
                    child: child
                  });
                  break;
                case 251:
                case 221:
                  break loop;
              }
              if (node === top_1) {
                break;
              }
            }
            var nodes = void 0;
            while (nodes = nodeStack.pop()) {
              var node_1 = nodes.node,
                  child = nodes.child;
              switch (node_1.kind) {
                case 199:
                  if (child !== node_1.expression) {
                    type = narrowType(type, node_1.expression, child === node_1.thenStatement);
                  }
                  break;
                case 185:
                  if (child !== node_1.condition) {
                    type = narrowType(type, node_1.condition, child === node_1.whenTrue);
                  }
                  break;
                case 184:
                  if (child === node_1.right) {
                    if (node_1.operatorToken.kind === 51) {
                      type = narrowType(type, node_1.left, true);
                    } else if (node_1.operatorToken.kind === 52) {
                      type = narrowType(type, node_1.left, false);
                    }
                  }
                  break;
                default:
                  ts.Debug.fail("Unreachable!");
              }
              if (type !== originalType && isVariableAssignedWithin(symbol, node_1)) {
                type = originalType;
              }
            }
            if (type === emptyUnionType) {
              type = originalType;
            }
          }
        }
        return type;
        function narrowTypeByEquality(type, expr, assumeTrue) {
          if (expr.left.kind !== 179 || expr.right.kind !== 9) {
            return type;
          }
          var left = expr.left;
          var right = expr.right;
          if (left.expression.kind !== 69 || getResolvedSymbol(left.expression) !== symbol) {
            return type;
          }
          if (expr.operatorToken.kind === 33) {
            assumeTrue = !assumeTrue;
          }
          var typeInfo = primitiveTypeInfo[right.text];
          if (typeInfo && typeInfo.type === undefinedType) {
            return type;
          }
          var flags;
          if (typeInfo) {
            flags = typeInfo.flags;
          } else {
            assumeTrue = !assumeTrue;
            flags = 132 | 258 | 16777216 | 8;
          }
          if (!(type.flags & 16384)) {
            if (assumeTrue && typeInfo && isTypeSubtypeOf(typeInfo.type, type)) {
              return typeInfo.type;
            }
            return filterUnion(type) ? type : emptyUnionType;
          }
          return getUnionType(ts.filter(type.types, filterUnion), true);
          function filterUnion(type) {
            return assumeTrue === !!(type.flags & flags);
          }
        }
        function narrowTypeByAnd(type, expr, assumeTrue) {
          if (assumeTrue) {
            return narrowType(narrowType(type, expr.left, true), expr.right, true);
          } else {
            return getUnionType([narrowType(type, expr.left, false), narrowType(type, expr.right, false)]);
          }
        }
        function narrowTypeByOr(type, expr, assumeTrue) {
          if (assumeTrue) {
            return getUnionType([narrowType(type, expr.left, true), narrowType(type, expr.right, true)]);
          } else {
            return narrowType(narrowType(type, expr.left, false), expr.right, false);
          }
        }
        function narrowTypeByInstanceof(type, expr, assumeTrue) {
          if (isTypeAny(type) || expr.left.kind !== 69 || getResolvedSymbol(expr.left) !== symbol) {
            return type;
          }
          var rightType = checkExpression(expr.right);
          if (!isTypeSubtypeOf(rightType, globalFunctionType)) {
            return type;
          }
          var targetType;
          var prototypeProperty = getPropertyOfType(rightType, "prototype");
          if (prototypeProperty) {
            var prototypePropertyType = getTypeOfSymbol(prototypeProperty);
            if (!isTypeAny(prototypePropertyType)) {
              targetType = prototypePropertyType;
            }
          }
          if (!targetType) {
            var constructSignatures = void 0;
            if (rightType.flags & 2048) {
              constructSignatures = resolveDeclaredMembers(rightType).declaredConstructSignatures;
            } else if (rightType.flags & 65536) {
              constructSignatures = getSignaturesOfType(rightType, 1);
            }
            if (constructSignatures && constructSignatures.length) {
              targetType = getUnionType(ts.map(constructSignatures, function(signature) {
                return getReturnTypeOfSignature(getErasedSignature(signature));
              }));
            }
          }
          if (targetType) {
            return getNarrowedType(type, targetType, assumeTrue);
          }
          return type;
        }
        function getNarrowedType(originalType, narrowedTypeCandidate, assumeTrue) {
          if (!assumeTrue) {
            if (originalType.flags & 16384) {
              return getUnionType(ts.filter(originalType.types, function(t) {
                return !isTypeSubtypeOf(t, narrowedTypeCandidate);
              }));
            }
            return originalType;
          }
          if (originalType.flags & 16384) {
            var assignableConstituents = ts.filter(originalType.types, function(t) {
              return isTypeAssignableTo(t, narrowedTypeCandidate);
            });
            if (assignableConstituents.length) {
              return getUnionType(assignableConstituents);
            }
          }
          if (isTypeAssignableTo(narrowedTypeCandidate, originalType)) {
            return narrowedTypeCandidate;
          }
          return originalType;
        }
        function narrowTypeByTypePredicate(type, callExpression, assumeTrue) {
          if (type.flags & 1) {
            return type;
          }
          var signature = getResolvedSignature(callExpression);
          var predicate = signature.typePredicate;
          if (!predicate) {
            return type;
          }
          if (ts.isIdentifierTypePredicate(predicate)) {
            if (callExpression.arguments[predicate.parameterIndex] && getSymbolAtTypePredicatePosition(callExpression.arguments[predicate.parameterIndex]) === symbol) {
              return getNarrowedType(type, predicate.type, assumeTrue);
            }
          } else {
            var invokedExpression = skipParenthesizedNodes(callExpression.expression);
            return narrowTypeByThisTypePredicate(type, predicate, invokedExpression, assumeTrue);
          }
          return type;
        }
        function narrowTypeByThisTypePredicate(type, predicate, invokedExpression, assumeTrue) {
          if (invokedExpression.kind === 170 || invokedExpression.kind === 169) {
            var accessExpression = invokedExpression;
            var possibleIdentifier = skipParenthesizedNodes(accessExpression.expression);
            if (possibleIdentifier.kind === 69 && getSymbolAtTypePredicatePosition(possibleIdentifier) === symbol) {
              return getNarrowedType(type, predicate.type, assumeTrue);
            }
          }
          return type;
        }
        function getSymbolAtTypePredicatePosition(expr) {
          expr = skipParenthesizedNodes(expr);
          switch (expr.kind) {
            case 69:
            case 169:
              return getSymbolOfEntityNameOrPropertyAccessExpression(expr);
          }
        }
        function narrowType(type, expr, assumeTrue) {
          switch (expr.kind) {
            case 171:
              return narrowTypeByTypePredicate(type, expr, assumeTrue);
            case 175:
              return narrowType(type, expr.expression, assumeTrue);
            case 184:
              var operator = expr.operatorToken.kind;
              if (operator === 32 || operator === 33) {
                return narrowTypeByEquality(type, expr, assumeTrue);
              } else if (operator === 51) {
                return narrowTypeByAnd(type, expr, assumeTrue);
              } else if (operator === 52) {
                return narrowTypeByOr(type, expr, assumeTrue);
              } else if (operator === 91) {
                return narrowTypeByInstanceof(type, expr, assumeTrue);
              }
              break;
            case 182:
              if (expr.operator === 49) {
                return narrowType(type, expr.operand, !assumeTrue);
              }
              break;
          }
          return type;
        }
      }
      function skipParenthesizedNodes(expression) {
        while (expression.kind === 175) {
          expression = expression.expression;
        }
        return expression;
      }
      function checkIdentifier(node) {
        var symbol = getResolvedSymbol(node);
        if (symbol === argumentsSymbol) {
          var container = ts.getContainingFunction(node);
          if (container.kind === 177) {
            if (languageVersion < 2) {
              error(node, ts.Diagnostics.The_arguments_object_cannot_be_referenced_in_an_arrow_function_in_ES3_and_ES5_Consider_using_a_standard_function_expression);
            }
          }
          if (node.parserContextFlags & 8) {
            getNodeLinks(container).flags |= 8192;
          }
        }
        if (symbol.flags & 8388608 && !isInTypeQuery(node) && !isConstEnumOrConstEnumOnlyModule(resolveAlias(symbol))) {
          markAliasSymbolAsReferenced(symbol);
        }
        var localOrExportSymbol = getExportSymbolOfValueSymbolIfExported(symbol);
        if (languageVersion === 2 && localOrExportSymbol.flags & 32 && localOrExportSymbol.valueDeclaration.kind === 217 && ts.nodeIsDecorated(localOrExportSymbol.valueDeclaration)) {
          var container = ts.getContainingClass(node);
          while (container !== undefined) {
            if (container === localOrExportSymbol.valueDeclaration && container.name !== node) {
              getNodeLinks(container).flags |= 524288;
              getNodeLinks(node).flags |= 1048576;
              break;
            }
            container = ts.getContainingClass(container);
          }
        }
        checkCollisionWithCapturedSuperVariable(node, node);
        checkCollisionWithCapturedThisVariable(node, node);
        checkNestedBlockScopedBinding(node, symbol);
        return getNarrowedTypeOfSymbol(localOrExportSymbol, node);
      }
      function isInsideFunction(node, threshold) {
        var current = node;
        while (current && current !== threshold) {
          if (ts.isFunctionLike(current)) {
            return true;
          }
          current = current.parent;
        }
        return false;
      }
      function checkNestedBlockScopedBinding(node, symbol) {
        if (languageVersion >= 2 || (symbol.flags & (2 | 32)) === 0 || symbol.valueDeclaration.parent.kind === 247) {
          return;
        }
        var container = ts.getEnclosingBlockScopeContainer(symbol.valueDeclaration);
        var usedInFunction = isInsideFunction(node.parent, container);
        var current = container;
        var containedInIterationStatement = false;
        while (current && !ts.nodeStartsNewLexicalEnvironment(current)) {
          if (ts.isIterationStatement(current, false)) {
            containedInIterationStatement = true;
            break;
          }
          current = current.parent;
        }
        if (containedInIterationStatement) {
          if (usedInFunction) {
            getNodeLinks(current).flags |= 65536;
          }
          if (container.kind === 202 && ts.getAncestor(symbol.valueDeclaration, 215).parent === container && isAssignedInBodyOfForStatement(node, container)) {
            getNodeLinks(symbol.valueDeclaration).flags |= 2097152;
          }
          getNodeLinks(symbol.valueDeclaration).flags |= 262144;
        }
        if (usedInFunction) {
          getNodeLinks(symbol.valueDeclaration).flags |= 131072;
        }
      }
      function isAssignedInBodyOfForStatement(node, container) {
        var current = node;
        while (current.parent.kind === 175) {
          current = current.parent;
        }
        var isAssigned = false;
        if (current.parent.kind === 184) {
          isAssigned = current.parent.left === current && ts.isAssignmentOperator(current.parent.operatorToken.kind);
        }
        if ((current.parent.kind === 182 || current.parent.kind === 183)) {
          var expr = current.parent;
          isAssigned = expr.operator === 41 || expr.operator === 42;
        }
        if (!isAssigned) {
          return false;
        }
        while (current !== container) {
          if (current === container.statement) {
            return true;
          } else {
            current = current.parent;
          }
        }
        return false;
      }
      function captureLexicalThis(node, container) {
        getNodeLinks(node).flags |= 2;
        if (container.kind === 142 || container.kind === 145) {
          var classNode = container.parent;
          getNodeLinks(classNode).flags |= 4;
        } else {
          getNodeLinks(container).flags |= 4;
        }
      }
      function findFirstSuperCall(n) {
        if (ts.isSuperCallExpression(n)) {
          return n;
        } else if (ts.isFunctionLike(n)) {
          return undefined;
        }
        return ts.forEachChild(n, findFirstSuperCall);
      }
      function getSuperCallInConstructor(constructor) {
        var links = getNodeLinks(constructor);
        if (links.hasSuperCall === undefined) {
          links.superCall = findFirstSuperCall(constructor.body);
          links.hasSuperCall = links.superCall ? true : false;
        }
        return links.superCall;
      }
      function classDeclarationExtendsNull(classDecl) {
        var classSymbol = getSymbolOfNode(classDecl);
        var classInstanceType = getDeclaredTypeOfSymbol(classSymbol);
        var baseConstructorType = getBaseConstructorTypeOfClass(classInstanceType);
        return baseConstructorType === nullType;
      }
      function checkThisExpression(node) {
        var container = ts.getThisContainer(node, true);
        var needToCaptureLexicalThis = false;
        if (container.kind === 145) {
          var containingClassDecl = container.parent;
          var baseTypeNode = ts.getClassExtendsHeritageClauseElement(containingClassDecl);
          if (baseTypeNode && !classDeclarationExtendsNull(containingClassDecl)) {
            var superCall = getSuperCallInConstructor(container);
            if (!superCall || superCall.end > node.pos) {
              error(node, ts.Diagnostics.super_must_be_called_before_accessing_this_in_the_constructor_of_a_derived_class);
            }
          }
        }
        if (container.kind === 177) {
          container = ts.getThisContainer(container, false);
          needToCaptureLexicalThis = (languageVersion < 2);
        }
        switch (container.kind) {
          case 221:
            error(node, ts.Diagnostics.this_cannot_be_referenced_in_a_module_or_namespace_body);
            break;
          case 220:
            error(node, ts.Diagnostics.this_cannot_be_referenced_in_current_location);
            break;
          case 145:
            if (isInConstructorArgumentInitializer(node, container)) {
              error(node, ts.Diagnostics.this_cannot_be_referenced_in_constructor_arguments);
            }
            break;
          case 142:
          case 141:
            if (container.flags & 64) {
              error(node, ts.Diagnostics.this_cannot_be_referenced_in_a_static_property_initializer);
            }
            break;
          case 137:
            error(node, ts.Diagnostics.this_cannot_be_referenced_in_a_computed_property_name);
            break;
        }
        if (needToCaptureLexicalThis) {
          captureLexicalThis(node, container);
        }
        if (ts.isClassLike(container.parent)) {
          var symbol = getSymbolOfNode(container.parent);
          return container.flags & 64 ? getTypeOfSymbol(symbol) : getDeclaredTypeOfSymbol(symbol).thisType;
        }
        if (ts.isInJavaScriptFile(node)) {
          var type = getTypeForThisExpressionFromJSDoc(container);
          if (type && type !== unknownType) {
            return type;
          }
          if (container.kind === 176) {
            if (ts.getSpecialPropertyAssignmentKind(container.parent) === 3) {
              var className = container.parent.left.expression.expression;
              var classSymbol = checkExpression(className).symbol;
              if (classSymbol && classSymbol.members && (classSymbol.flags & 16)) {
                return getInferredClassType(classSymbol);
              }
            }
          }
        }
        return anyType;
      }
      function getTypeForThisExpressionFromJSDoc(node) {
        var typeTag = ts.getJSDocTypeTag(node);
        if (typeTag && typeTag.typeExpression && typeTag.typeExpression.type && typeTag.typeExpression.type.kind === 264) {
          var jsDocFunctionType = typeTag.typeExpression.type;
          if (jsDocFunctionType.parameters.length > 0 && jsDocFunctionType.parameters[0].type.kind === 267) {
            return getTypeFromTypeNode(jsDocFunctionType.parameters[0].type);
          }
        }
      }
      function isInConstructorArgumentInitializer(node, constructorDecl) {
        for (var n = node; n && n !== constructorDecl; n = n.parent) {
          if (n.kind === 139) {
            return true;
          }
        }
        return false;
      }
      function checkSuperExpression(node) {
        var isCallExpression = node.parent.kind === 171 && node.parent.expression === node;
        var container = ts.getSuperContainer(node, true);
        var needToCaptureLexicalThis = false;
        if (!isCallExpression) {
          while (container && container.kind === 177) {
            container = ts.getSuperContainer(container, true);
            needToCaptureLexicalThis = languageVersion < 2;
          }
        }
        var canUseSuperExpression = isLegalUsageOfSuperExpression(container);
        var nodeCheckFlag = 0;
        if (!canUseSuperExpression) {
          var current = node;
          while (current && current !== container && current.kind !== 137) {
            current = current.parent;
          }
          if (current && current.kind === 137) {
            error(node, ts.Diagnostics.super_cannot_be_referenced_in_a_computed_property_name);
          } else if (isCallExpression) {
            error(node, ts.Diagnostics.Super_calls_are_not_permitted_outside_constructors_or_in_nested_functions_inside_constructors);
          } else if (!container || !container.parent || !(ts.isClassLike(container.parent) || container.parent.kind === 168)) {
            error(node, ts.Diagnostics.super_can_only_be_referenced_in_members_of_derived_classes_or_object_literal_expressions);
          } else {
            error(node, ts.Diagnostics.super_property_access_is_permitted_only_in_a_constructor_member_function_or_member_accessor_of_a_derived_class);
          }
          return unknownType;
        }
        if ((container.flags & 64) || isCallExpression) {
          nodeCheckFlag = 512;
        } else {
          nodeCheckFlag = 256;
        }
        getNodeLinks(node).flags |= nodeCheckFlag;
        if (container.kind === 144 && container.flags & 256) {
          if (ts.isSuperPropertyOrElementAccess(node.parent) && isAssignmentTarget(node.parent)) {
            getNodeLinks(container).flags |= 4096;
          } else {
            getNodeLinks(container).flags |= 2048;
          }
        }
        if (needToCaptureLexicalThis) {
          captureLexicalThis(node.parent, container);
        }
        if (container.parent.kind === 168) {
          if (languageVersion < 2) {
            error(node, ts.Diagnostics.super_is_only_allowed_in_members_of_object_literal_expressions_when_option_target_is_ES2015_or_higher);
            return unknownType;
          } else {
            return anyType;
          }
        }
        var classLikeDeclaration = container.parent;
        var classType = getDeclaredTypeOfSymbol(getSymbolOfNode(classLikeDeclaration));
        var baseClassType = classType && getBaseTypes(classType)[0];
        if (!baseClassType) {
          if (!ts.getClassExtendsHeritageClauseElement(classLikeDeclaration)) {
            error(node, ts.Diagnostics.super_can_only_be_referenced_in_a_derived_class);
          }
          return unknownType;
        }
        if (container.kind === 145 && isInConstructorArgumentInitializer(node, container)) {
          error(node, ts.Diagnostics.super_cannot_be_referenced_in_constructor_arguments);
          return unknownType;
        }
        return nodeCheckFlag === 512 ? getBaseConstructorTypeOfClass(classType) : baseClassType;
        function isLegalUsageOfSuperExpression(container) {
          if (!container) {
            return false;
          }
          if (isCallExpression) {
            return container.kind === 145;
          } else {
            if (ts.isClassLike(container.parent) || container.parent.kind === 168) {
              if (container.flags & 64) {
                return container.kind === 144 || container.kind === 143 || container.kind === 146 || container.kind === 147;
              } else {
                return container.kind === 144 || container.kind === 143 || container.kind === 146 || container.kind === 147 || container.kind === 142 || container.kind === 141 || container.kind === 145;
              }
            }
          }
          return false;
        }
      }
      function getContextuallyTypedParameterType(parameter) {
        var func = parameter.parent;
        if (isFunctionExpressionOrArrowFunction(func) || ts.isObjectLiteralMethod(func)) {
          if (isContextSensitive(func)) {
            var contextualSignature = getContextualSignature(func);
            if (contextualSignature) {
              var funcHasRestParameters = ts.hasRestParameter(func);
              var len = func.parameters.length - (funcHasRestParameters ? 1 : 0);
              var indexOfParameter = ts.indexOf(func.parameters, parameter);
              if (indexOfParameter < len) {
                return getTypeAtPosition(contextualSignature, indexOfParameter);
              }
              if (funcHasRestParameters && indexOfParameter === (func.parameters.length - 1) && isRestParameterIndex(contextualSignature, func.parameters.length - 1)) {
                return getTypeOfSymbol(ts.lastOrUndefined(contextualSignature.parameters));
              }
            }
          }
        }
        return undefined;
      }
      function getContextualTypeForInitializerExpression(node) {
        var declaration = node.parent;
        if (node === declaration.initializer) {
          if (declaration.type) {
            return getTypeFromTypeNode(declaration.type);
          }
          if (declaration.kind === 139) {
            var type = getContextuallyTypedParameterType(declaration);
            if (type) {
              return type;
            }
          }
          if (ts.isBindingPattern(declaration.name)) {
            return getTypeFromBindingPattern(declaration.name, true);
          }
        }
        return undefined;
      }
      function getContextualTypeForReturnExpression(node) {
        var func = ts.getContainingFunction(node);
        if (func && !func.asteriskToken) {
          return getContextualReturnType(func);
        }
        return undefined;
      }
      function getContextualTypeForYieldOperand(node) {
        var func = ts.getContainingFunction(node);
        if (func) {
          var contextualReturnType = getContextualReturnType(func);
          if (contextualReturnType) {
            return node.asteriskToken ? contextualReturnType : getElementTypeOfIterableIterator(contextualReturnType);
          }
        }
        return undefined;
      }
      function isInParameterInitializerBeforeContainingFunction(node) {
        while (node.parent && !ts.isFunctionLike(node.parent)) {
          if (node.parent.kind === 139 && node.parent.initializer === node) {
            return true;
          }
          node = node.parent;
        }
        return false;
      }
      function getContextualReturnType(functionDecl) {
        if (functionDecl.type || functionDecl.kind === 145 || functionDecl.kind === 146 && ts.getSetAccessorTypeAnnotationNode(ts.getDeclarationOfKind(functionDecl.symbol, 147))) {
          return getReturnTypeOfSignature(getSignatureFromDeclaration(functionDecl));
        }
        var signature = getContextualSignatureForFunctionLikeDeclaration(functionDecl);
        if (signature) {
          return getReturnTypeOfSignature(signature);
        }
        return undefined;
      }
      function getContextualTypeForArgument(callTarget, arg) {
        var args = getEffectiveCallArguments(callTarget);
        var argIndex = ts.indexOf(args, arg);
        if (argIndex >= 0) {
          var signature = getResolvedSignature(callTarget);
          return getTypeAtPosition(signature, argIndex);
        }
        return undefined;
      }
      function getContextualTypeForSubstitutionExpression(template, substitutionExpression) {
        if (template.parent.kind === 173) {
          return getContextualTypeForArgument(template.parent, substitutionExpression);
        }
        return undefined;
      }
      function getContextualTypeForBinaryOperand(node) {
        var binaryExpression = node.parent;
        var operator = binaryExpression.operatorToken.kind;
        if (operator >= 56 && operator <= 68) {
          if (node === binaryExpression.right) {
            return checkExpression(binaryExpression.left);
          }
        } else if (operator === 52) {
          var type = getContextualType(binaryExpression);
          if (!type && node === binaryExpression.right) {
            type = checkExpression(binaryExpression.left);
          }
          return type;
        } else if (operator === 51 || operator === 24) {
          if (node === binaryExpression.right) {
            return getContextualType(binaryExpression);
          }
        }
        return undefined;
      }
      function applyToContextualType(type, mapper) {
        if (!(type.flags & 16384)) {
          return mapper(type);
        }
        var types = type.types;
        var mappedType;
        var mappedTypes;
        for (var _i = 0,
            types_8 = types; _i < types_8.length; _i++) {
          var current = types_8[_i];
          var t = mapper(current);
          if (t) {
            if (!mappedType) {
              mappedType = t;
            } else if (!mappedTypes) {
              mappedTypes = [mappedType, t];
            } else {
              mappedTypes.push(t);
            }
          }
        }
        return mappedTypes ? getUnionType(mappedTypes) : mappedType;
      }
      function getTypeOfPropertyOfContextualType(type, name) {
        return applyToContextualType(type, function(t) {
          var prop = t.flags & 130048 ? getPropertyOfType(t, name) : undefined;
          return prop ? getTypeOfSymbol(prop) : undefined;
        });
      }
      function getIndexTypeOfContextualType(type, kind) {
        return applyToContextualType(type, function(t) {
          return getIndexTypeOfStructuredType(t, kind);
        });
      }
      function contextualTypeIsStringLiteralType(type) {
        return !!(type.flags & 16384 ? ts.forEach(type.types, isStringLiteralType) : isStringLiteralType(type));
      }
      function contextualTypeIsTupleLikeType(type) {
        return !!(type.flags & 16384 ? ts.forEach(type.types, isTupleLikeType) : isTupleLikeType(type));
      }
      function contextualTypeHasIndexSignature(type, kind) {
        return !!(type.flags & 16384 ? ts.forEach(type.types, function(t) {
          return getIndexTypeOfStructuredType(t, kind);
        }) : getIndexTypeOfStructuredType(type, kind));
      }
      function getContextualTypeForObjectLiteralMethod(node) {
        ts.Debug.assert(ts.isObjectLiteralMethod(node));
        if (isInsideWithStatementBody(node)) {
          return undefined;
        }
        return getContextualTypeForObjectLiteralElement(node);
      }
      function getContextualTypeForObjectLiteralElement(element) {
        var objectLiteral = element.parent;
        var type = getApparentTypeOfContextualType(objectLiteral);
        if (type) {
          if (!ts.hasDynamicName(element)) {
            var symbolName = getSymbolOfNode(element).name;
            var propertyType = getTypeOfPropertyOfContextualType(type, symbolName);
            if (propertyType) {
              return propertyType;
            }
          }
          return isNumericName(element.name) && getIndexTypeOfContextualType(type, 1) || getIndexTypeOfContextualType(type, 0);
        }
        return undefined;
      }
      function getContextualTypeForElementExpression(node) {
        var arrayLiteral = node.parent;
        var type = getApparentTypeOfContextualType(arrayLiteral);
        if (type) {
          var index = ts.indexOf(arrayLiteral.elements, node);
          return getTypeOfPropertyOfContextualType(type, "" + index) || getIndexTypeOfContextualType(type, 1) || (languageVersion >= 2 ? getElementTypeOfIterable(type, undefined) : undefined);
        }
        return undefined;
      }
      function getContextualTypeForConditionalOperand(node) {
        var conditional = node.parent;
        return node === conditional.whenTrue || node === conditional.whenFalse ? getContextualType(conditional) : undefined;
      }
      function getContextualTypeForJsxAttribute(attribute) {
        var kind = attribute.kind;
        var jsxElement = attribute.parent;
        var attrsType = getJsxElementAttributesType(jsxElement);
        if (attribute.kind === 241) {
          if (!attrsType || isTypeAny(attrsType)) {
            return undefined;
          }
          return getTypeOfPropertyOfType(attrsType, attribute.name.text);
        } else if (attribute.kind === 242) {
          return attrsType;
        }
        ts.Debug.fail("Expected JsxAttribute or JsxSpreadAttribute, got ts.SyntaxKind[" + kind + "]");
      }
      function getApparentTypeOfContextualType(node) {
        var type = getContextualType(node);
        return type && getApparentType(type);
      }
      function getContextualType(node) {
        if (isInsideWithStatementBody(node)) {
          return undefined;
        }
        if (node.contextualType) {
          return node.contextualType;
        }
        var parent = node.parent;
        switch (parent.kind) {
          case 214:
          case 139:
          case 142:
          case 141:
          case 166:
            return getContextualTypeForInitializerExpression(node);
          case 177:
          case 207:
            return getContextualTypeForReturnExpression(node);
          case 187:
            return getContextualTypeForYieldOperand(parent);
          case 171:
          case 172:
            return getContextualTypeForArgument(parent, node);
          case 174:
          case 192:
            return getTypeFromTypeNode(parent.type);
          case 184:
            return getContextualTypeForBinaryOperand(node);
          case 248:
            return getContextualTypeForObjectLiteralElement(parent);
          case 167:
            return getContextualTypeForElementExpression(node);
          case 185:
            return getContextualTypeForConditionalOperand(node);
          case 193:
            ts.Debug.assert(parent.parent.kind === 186);
            return getContextualTypeForSubstitutionExpression(parent.parent, node);
          case 175:
            return getContextualType(parent);
          case 243:
            return getContextualType(parent);
          case 241:
          case 242:
            return getContextualTypeForJsxAttribute(parent);
        }
        return undefined;
      }
      function getNonGenericSignature(type) {
        var signatures = getSignaturesOfStructuredType(type, 0);
        if (signatures.length === 1) {
          var signature = signatures[0];
          if (!signature.typeParameters) {
            return signature;
          }
        }
      }
      function isFunctionExpressionOrArrowFunction(node) {
        return node.kind === 176 || node.kind === 177;
      }
      function getContextualSignatureForFunctionLikeDeclaration(node) {
        return isFunctionExpressionOrArrowFunction(node) || ts.isObjectLiteralMethod(node) ? getContextualSignature(node) : undefined;
      }
      function getContextualSignature(node) {
        ts.Debug.assert(node.kind !== 144 || ts.isObjectLiteralMethod(node));
        var type = ts.isObjectLiteralMethod(node) ? getContextualTypeForObjectLiteralMethod(node) : getApparentTypeOfContextualType(node);
        if (!type) {
          return undefined;
        }
        if (!(type.flags & 16384)) {
          return getNonGenericSignature(type);
        }
        var signatureList;
        var types = type.types;
        for (var _i = 0,
            types_9 = types; _i < types_9.length; _i++) {
          var current = types_9[_i];
          var signature = getNonGenericSignature(current);
          if (signature) {
            if (!signatureList) {
              signatureList = [signature];
            } else if (!compareSignaturesIdentical(signatureList[0], signature, false, true, compareTypesIdentical)) {
              return undefined;
            } else {
              signatureList.push(signature);
            }
          }
        }
        var result;
        if (signatureList) {
          result = cloneSignature(signatureList[0]);
          result.resolvedReturnType = undefined;
          result.unionSignatures = signatureList;
        }
        return result;
      }
      function isInferentialContext(mapper) {
        return mapper && mapper.context;
      }
      function isAssignmentTarget(node) {
        var parent = node.parent;
        if (parent.kind === 184 && parent.operatorToken.kind === 56 && parent.left === node) {
          return true;
        }
        if (parent.kind === 248) {
          return isAssignmentTarget(parent.parent);
        }
        if (parent.kind === 167) {
          return isAssignmentTarget(parent);
        }
        return false;
      }
      function checkSpreadElementExpression(node, contextualMapper) {
        var arrayOrIterableType = checkExpressionCached(node.expression, contextualMapper);
        return checkIteratedTypeOrElementType(arrayOrIterableType, node.expression, false);
      }
      function hasDefaultValue(node) {
        return (node.kind === 166 && !!node.initializer) || (node.kind === 184 && node.operatorToken.kind === 56);
      }
      function checkArrayLiteral(node, contextualMapper) {
        var elements = node.elements;
        var hasSpreadElement = false;
        var elementTypes = [];
        var inDestructuringPattern = isAssignmentTarget(node);
        for (var _i = 0,
            elements_1 = elements; _i < elements_1.length; _i++) {
          var e = elements_1[_i];
          if (inDestructuringPattern && e.kind === 188) {
            var restArrayType = checkExpression(e.expression, contextualMapper);
            var restElementType = getIndexTypeOfType(restArrayType, 1) || (languageVersion >= 2 ? getElementTypeOfIterable(restArrayType, undefined) : undefined);
            if (restElementType) {
              elementTypes.push(restElementType);
            }
          } else {
            var type = checkExpression(e, contextualMapper);
            elementTypes.push(type);
          }
          hasSpreadElement = hasSpreadElement || e.kind === 188;
        }
        if (!hasSpreadElement) {
          if (inDestructuringPattern && elementTypes.length) {
            var type = createNewTupleType(elementTypes);
            type.pattern = node;
            return type;
          }
          var contextualType = getApparentTypeOfContextualType(node);
          if (contextualType && contextualTypeIsTupleLikeType(contextualType)) {
            var pattern = contextualType.pattern;
            if (pattern && (pattern.kind === 165 || pattern.kind === 167)) {
              var patternElements = pattern.elements;
              for (var i = elementTypes.length; i < patternElements.length; i++) {
                var patternElement = patternElements[i];
                if (hasDefaultValue(patternElement)) {
                  elementTypes.push(contextualType.elementTypes[i]);
                } else {
                  if (patternElement.kind !== 190) {
                    error(patternElement, ts.Diagnostics.Initializer_provides_no_value_for_this_binding_element_and_the_binding_element_has_no_default_value);
                  }
                  elementTypes.push(unknownType);
                }
              }
            }
            if (elementTypes.length) {
              return createTupleType(elementTypes);
            }
          }
        }
        return createArrayType(elementTypes.length ? getUnionType(elementTypes) : undefinedType);
      }
      function isNumericName(name) {
        return name.kind === 137 ? isNumericComputedName(name) : isNumericLiteralName(name.text);
      }
      function isNumericComputedName(name) {
        return isTypeAnyOrAllConstituentTypesHaveKind(checkComputedPropertyName(name), 132);
      }
      function isTypeAnyOrAllConstituentTypesHaveKind(type, kind) {
        return isTypeAny(type) || allConstituentTypesHaveKind(type, kind);
      }
      function isNumericLiteralName(name) {
        return (+name).toString() === name;
      }
      function checkComputedPropertyName(node) {
        var links = getNodeLinks(node.expression);
        if (!links.resolvedType) {
          links.resolvedType = checkExpression(node.expression);
          if (!isTypeAnyOrAllConstituentTypesHaveKind(links.resolvedType, 132 | 258 | 16777216)) {
            error(node, ts.Diagnostics.A_computed_property_name_must_be_of_type_string_number_symbol_or_any);
          } else {
            checkThatExpressionIsProperSymbolReference(node.expression, links.resolvedType, true);
          }
        }
        return links.resolvedType;
      }
      function checkObjectLiteral(node, contextualMapper) {
        var inDestructuringPattern = isAssignmentTarget(node);
        checkGrammarObjectLiteralExpression(node, inDestructuringPattern);
        var propertiesTable = {};
        var propertiesArray = [];
        var contextualType = getApparentTypeOfContextualType(node);
        var contextualTypeHasPattern = contextualType && contextualType.pattern && (contextualType.pattern.kind === 164 || contextualType.pattern.kind === 168);
        var typeFlags = 0;
        var patternWithComputedProperties = false;
        for (var _i = 0,
            _a = node.properties; _i < _a.length; _i++) {
          var memberDecl = _a[_i];
          var member = memberDecl.symbol;
          if (memberDecl.kind === 248 || memberDecl.kind === 249 || ts.isObjectLiteralMethod(memberDecl)) {
            var type = void 0;
            if (memberDecl.kind === 248) {
              type = checkPropertyAssignment(memberDecl, contextualMapper);
            } else if (memberDecl.kind === 144) {
              type = checkObjectLiteralMethod(memberDecl, contextualMapper);
            } else {
              ts.Debug.assert(memberDecl.kind === 249);
              type = checkExpression(memberDecl.name, contextualMapper);
            }
            typeFlags |= type.flags;
            var prop = createSymbol(4 | 67108864 | member.flags, member.name);
            if (inDestructuringPattern) {
              var isOptional = (memberDecl.kind === 248 && hasDefaultValue(memberDecl.initializer)) || (memberDecl.kind === 249 && memberDecl.objectAssignmentInitializer);
              if (isOptional) {
                prop.flags |= 536870912;
              }
              if (ts.hasDynamicName(memberDecl)) {
                patternWithComputedProperties = true;
              }
            } else if (contextualTypeHasPattern && !(contextualType.flags & 67108864)) {
              var impliedProp = getPropertyOfType(contextualType, member.name);
              if (impliedProp) {
                prop.flags |= impliedProp.flags & 536870912;
              } else if (!compilerOptions.suppressExcessPropertyErrors) {
                error(memberDecl.name, ts.Diagnostics.Object_literal_may_only_specify_known_properties_and_0_does_not_exist_in_type_1, symbolToString(member), typeToString(contextualType));
              }
            }
            prop.declarations = member.declarations;
            prop.parent = member.parent;
            if (member.valueDeclaration) {
              prop.valueDeclaration = member.valueDeclaration;
            }
            prop.type = type;
            prop.target = member;
            member = prop;
          } else {
            ts.Debug.assert(memberDecl.kind === 146 || memberDecl.kind === 147);
            checkAccessorDeclaration(memberDecl);
          }
          if (!ts.hasDynamicName(memberDecl)) {
            propertiesTable[member.name] = member;
          }
          propertiesArray.push(member);
        }
        if (contextualTypeHasPattern) {
          for (var _b = 0,
              _c = getPropertiesOfType(contextualType); _b < _c.length; _b++) {
            var prop = _c[_b];
            if (!ts.hasProperty(propertiesTable, prop.name)) {
              if (!(prop.flags & 536870912)) {
                error(prop.valueDeclaration || prop.bindingElement, ts.Diagnostics.Initializer_provides_no_value_for_this_binding_element_and_the_binding_element_has_no_default_value);
              }
              propertiesTable[prop.name] = prop;
              propertiesArray.push(prop);
            }
          }
        }
        var stringIndexType = getIndexType(0);
        var numberIndexType = getIndexType(1);
        var result = createAnonymousType(node.symbol, propertiesTable, emptyArray, emptyArray, stringIndexType, numberIndexType);
        var freshObjectLiteralFlag = compilerOptions.suppressExcessPropertyErrors ? 0 : 1048576;
        result.flags |= 524288 | 4194304 | freshObjectLiteralFlag | (typeFlags & 14680064) | (patternWithComputedProperties ? 67108864 : 0);
        if (inDestructuringPattern) {
          result.pattern = node;
        }
        return result;
        function getIndexType(kind) {
          if (contextualType && contextualTypeHasIndexSignature(contextualType, kind)) {
            var propTypes = [];
            for (var i = 0; i < propertiesArray.length; i++) {
              var propertyDecl = node.properties[i];
              if (kind === 0 || isNumericName(propertyDecl.name)) {
                var type = getTypeOfSymbol(propertiesArray[i]);
                if (!ts.contains(propTypes, type)) {
                  propTypes.push(type);
                }
              }
            }
            var result_1 = propTypes.length ? getUnionType(propTypes) : undefinedType;
            typeFlags |= result_1.flags;
            return result_1;
          }
          return undefined;
        }
      }
      function checkJsxSelfClosingElement(node) {
        checkJsxOpeningLikeElement(node);
        return jsxElementType || anyType;
      }
      function checkJsxElement(node) {
        checkJsxOpeningLikeElement(node.openingElement);
        getJsxElementTagSymbol(node.closingElement);
        for (var _i = 0,
            _a = node.children; _i < _a.length; _i++) {
          var child = _a[_i];
          switch (child.kind) {
            case 243:
              checkJsxExpression(child);
              break;
            case 236:
              checkJsxElement(child);
              break;
            case 237:
              checkJsxSelfClosingElement(child);
              break;
          }
        }
        return jsxElementType || anyType;
      }
      function isUnhyphenatedJsxName(name) {
        return name.indexOf("-") < 0;
      }
      function isJsxIntrinsicIdentifier(tagName) {
        if (tagName.kind === 136) {
          return false;
        } else {
          return ts.isIntrinsicJsxName(tagName.text);
        }
      }
      function checkJsxAttribute(node, elementAttributesType, nameTable) {
        var correspondingPropType = undefined;
        if (elementAttributesType === emptyObjectType && isUnhyphenatedJsxName(node.name.text)) {
          error(node.parent, ts.Diagnostics.JSX_element_class_does_not_support_attributes_because_it_does_not_have_a_0_property, getJsxElementPropertiesName());
        } else if (elementAttributesType && !isTypeAny(elementAttributesType)) {
          var correspondingPropSymbol = getPropertyOfType(elementAttributesType, node.name.text);
          correspondingPropType = correspondingPropSymbol && getTypeOfSymbol(correspondingPropSymbol);
          if (isUnhyphenatedJsxName(node.name.text)) {
            var indexerType = getIndexTypeOfType(elementAttributesType, 0);
            if (indexerType) {
              correspondingPropType = indexerType;
            } else {
              if (!correspondingPropType) {
                error(node.name, ts.Diagnostics.Property_0_does_not_exist_on_type_1, node.name.text, typeToString(elementAttributesType));
                return unknownType;
              }
            }
          }
        }
        var exprType;
        if (node.initializer) {
          exprType = checkExpression(node.initializer);
        } else {
          exprType = booleanType;
        }
        if (correspondingPropType) {
          checkTypeAssignableTo(exprType, correspondingPropType, node);
        }
        nameTable[node.name.text] = true;
        return exprType;
      }
      function checkJsxSpreadAttribute(node, elementAttributesType, nameTable) {
        var type = checkExpression(node.expression);
        var props = getPropertiesOfType(type);
        for (var _i = 0,
            props_2 = props; _i < props_2.length; _i++) {
          var prop = props_2[_i];
          if (!nameTable[prop.name]) {
            var targetPropSym = getPropertyOfType(elementAttributesType, prop.name);
            if (targetPropSym) {
              var msg = ts.chainDiagnosticMessages(undefined, ts.Diagnostics.Property_0_of_JSX_spread_attribute_is_not_assignable_to_target_property, prop.name);
              checkTypeAssignableTo(getTypeOfSymbol(prop), getTypeOfSymbol(targetPropSym), node, undefined, msg);
            }
            nameTable[prop.name] = true;
          }
        }
        return type;
      }
      function getJsxType(name) {
        if (jsxTypes[name] === undefined) {
          return jsxTypes[name] = getExportedTypeFromNamespace(JsxNames.JSX, name) || unknownType;
        }
        return jsxTypes[name];
      }
      function getJsxElementTagSymbol(node) {
        var links = getNodeLinks(node);
        if (!links.resolvedSymbol) {
          if (isJsxIntrinsicIdentifier(node.tagName)) {
            links.resolvedSymbol = lookupIntrinsicTag(node);
          } else {
            links.resolvedSymbol = lookupClassTag(node);
          }
        }
        return links.resolvedSymbol;
        function lookupIntrinsicTag(node) {
          var intrinsicElementsType = getJsxType(JsxNames.IntrinsicElements);
          if (intrinsicElementsType !== unknownType) {
            var intrinsicProp = getPropertyOfType(intrinsicElementsType, node.tagName.text);
            if (intrinsicProp) {
              links.jsxFlags |= 1;
              return intrinsicProp;
            }
            var indexSignatureType = getIndexTypeOfType(intrinsicElementsType, 0);
            if (indexSignatureType) {
              links.jsxFlags |= 2;
              return intrinsicElementsType.symbol;
            }
            error(node, ts.Diagnostics.Property_0_does_not_exist_on_type_1, node.tagName.text, "JSX." + JsxNames.IntrinsicElements);
            return unknownSymbol;
          } else {
            if (compilerOptions.noImplicitAny) {
              error(node, ts.Diagnostics.JSX_element_implicitly_has_type_any_because_no_interface_JSX_0_exists, JsxNames.IntrinsicElements);
            }
            return unknownSymbol;
          }
        }
        function lookupClassTag(node) {
          var valueSymbol = resolveJsxTagName(node);
          if (valueSymbol && valueSymbol !== unknownSymbol) {
            links.jsxFlags |= 4;
            if (valueSymbol.flags & 8388608) {
              markAliasSymbolAsReferenced(valueSymbol);
            }
          }
          return valueSymbol || unknownSymbol;
        }
        function resolveJsxTagName(node) {
          if (node.tagName.kind === 69) {
            var tag = node.tagName;
            var sym = getResolvedSymbol(tag);
            return sym.exportSymbol || sym;
          } else {
            return checkQualifiedName(node.tagName).symbol;
          }
        }
      }
      function getJsxElementInstanceType(node) {
        ts.Debug.assert(!!(getNodeLinks(node).jsxFlags & 4), "Should not call getJsxElementInstanceType on non-class Element");
        var classSymbol = getJsxElementTagSymbol(node);
        if (classSymbol === unknownSymbol) {
          return anyType;
        }
        var valueType = getTypeOfSymbol(classSymbol);
        if (isTypeAny(valueType)) {
          return anyType;
        }
        var signatures = getSignaturesOfType(valueType, 1);
        if (signatures.length === 0) {
          signatures = getSignaturesOfType(valueType, 0);
          if (signatures.length === 0) {
            error(node.tagName, ts.Diagnostics.JSX_element_type_0_does_not_have_any_construct_or_call_signatures, ts.getTextOfNode(node.tagName));
            return unknownType;
          }
        }
        return getUnionType(signatures.map(getReturnTypeOfSignature));
      }
      function getJsxElementPropertiesName() {
        var jsxNamespace = getGlobalSymbol(JsxNames.JSX, 1536, undefined);
        var attribsPropTypeSym = jsxNamespace && getSymbol(jsxNamespace.exports, JsxNames.ElementAttributesPropertyNameContainer, 793056);
        var attribPropType = attribsPropTypeSym && getDeclaredTypeOfSymbol(attribsPropTypeSym);
        var attribProperties = attribPropType && getPropertiesOfType(attribPropType);
        if (attribProperties) {
          if (attribProperties.length === 0) {
            return "";
          } else if (attribProperties.length === 1) {
            return attribProperties[0].name;
          } else {
            error(attribsPropTypeSym.declarations[0], ts.Diagnostics.The_global_type_JSX_0_may_not_have_more_than_one_property, JsxNames.ElementAttributesPropertyNameContainer);
            return undefined;
          }
        } else {
          return undefined;
        }
      }
      function getJsxElementAttributesType(node) {
        var links = getNodeLinks(node);
        if (!links.resolvedJsxType) {
          var sym = getJsxElementTagSymbol(node);
          if (links.jsxFlags & 4) {
            var elemInstanceType = getJsxElementInstanceType(node);
            var elemClassType = getJsxGlobalElementClassType();
            if (!elemClassType || !isTypeAssignableTo(elemInstanceType, elemClassType)) {
              var elemType = getTypeOfSymbol(sym);
              var callSignatures = elemType && getSignaturesOfType(elemType, 0);
              var callSignature = callSignatures && callSignatures.length > 0 && callSignatures[0];
              var callReturnType = callSignature && getReturnTypeOfSignature(callSignature);
              var paramType = callReturnType && (callSignature.parameters.length === 0 ? emptyObjectType : getTypeOfSymbol(callSignature.parameters[0]));
              if (callReturnType && isTypeAssignableTo(callReturnType, jsxElementType)) {
                var intrinsicAttributes = getJsxType(JsxNames.IntrinsicAttributes);
                if (intrinsicAttributes !== unknownType) {
                  paramType = intersectTypes(intrinsicAttributes, paramType);
                }
                return links.resolvedJsxType = paramType;
              }
            }
            if (elemClassType) {
              checkTypeRelatedTo(elemInstanceType, elemClassType, assignableRelation, node, ts.Diagnostics.JSX_element_type_0_is_not_a_constructor_function_for_JSX_elements);
            }
            if (isTypeAny(elemInstanceType)) {
              return links.resolvedJsxType = elemInstanceType;
            }
            var propsName = getJsxElementPropertiesName();
            if (propsName === undefined) {
              return links.resolvedJsxType = anyType;
            } else if (propsName === "") {
              return links.resolvedJsxType = elemInstanceType;
            } else {
              var attributesType = getTypeOfPropertyOfType(elemInstanceType, propsName);
              if (!attributesType) {
                return links.resolvedJsxType = emptyObjectType;
              } else if (isTypeAny(attributesType) || (attributesType === unknownType)) {
                return links.resolvedJsxType = attributesType;
              } else if (attributesType.flags & 16384) {
                error(node.tagName, ts.Diagnostics.JSX_element_attributes_type_0_may_not_be_a_union_type, typeToString(attributesType));
                return links.resolvedJsxType = anyType;
              } else {
                var apparentAttributesType = attributesType;
                var intrinsicClassAttribs = getJsxType(JsxNames.IntrinsicClassAttributes);
                if (intrinsicClassAttribs !== unknownType) {
                  var typeParams = getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(intrinsicClassAttribs.symbol);
                  if (typeParams) {
                    if (typeParams.length === 1) {
                      apparentAttributesType = intersectTypes(createTypeReference(intrinsicClassAttribs, [elemInstanceType]), apparentAttributesType);
                    }
                  } else {
                    apparentAttributesType = intersectTypes(attributesType, intrinsicClassAttribs);
                  }
                }
                var intrinsicAttribs = getJsxType(JsxNames.IntrinsicAttributes);
                if (intrinsicAttribs !== unknownType) {
                  apparentAttributesType = intersectTypes(intrinsicAttribs, apparentAttributesType);
                }
                return links.resolvedJsxType = apparentAttributesType;
              }
            }
          } else if (links.jsxFlags & 1) {
            return links.resolvedJsxType = getTypeOfSymbol(sym);
          } else if (links.jsxFlags & 2) {
            return links.resolvedJsxType = getIndexTypeOfSymbol(sym, 0);
          } else {
            return links.resolvedJsxType = anyType;
          }
        }
        return links.resolvedJsxType;
      }
      function getJsxAttributePropertySymbol(attrib) {
        var attributesType = getJsxElementAttributesType(attrib.parent);
        var prop = getPropertyOfType(attributesType, attrib.name.text);
        return prop || unknownSymbol;
      }
      function getJsxGlobalElementClassType() {
        if (!jsxElementClassType) {
          jsxElementClassType = getExportedTypeFromNamespace(JsxNames.JSX, JsxNames.ElementClass);
        }
        return jsxElementClassType;
      }
      function getJsxIntrinsicTagNames() {
        var intrinsics = getJsxType(JsxNames.IntrinsicElements);
        return intrinsics ? getPropertiesOfType(intrinsics) : emptyArray;
      }
      function checkJsxPreconditions(errorNode) {
        if ((compilerOptions.jsx || 0) === 0) {
          error(errorNode, ts.Diagnostics.Cannot_use_JSX_unless_the_jsx_flag_is_provided);
        }
        if (jsxElementType === undefined) {
          if (compilerOptions.noImplicitAny) {
            error(errorNode, ts.Diagnostics.JSX_element_implicitly_has_type_any_because_the_global_type_JSX_Element_does_not_exist);
          }
        }
      }
      function checkJsxOpeningLikeElement(node) {
        checkGrammarJsxElement(node);
        checkJsxPreconditions(node);
        var reactRefErr = compilerOptions.jsx === 2 ? ts.Diagnostics.Cannot_find_name_0 : undefined;
        var reactNamespace = compilerOptions.reactNamespace ? compilerOptions.reactNamespace : "React";
        var reactSym = resolveName(node.tagName, reactNamespace, 107455, reactRefErr, reactNamespace);
        if (reactSym) {
          getSymbolLinks(reactSym).referenced = true;
        }
        var targetAttributesType = getJsxElementAttributesType(node);
        var nameTable = {};
        var sawSpreadedAny = false;
        for (var i = node.attributes.length - 1; i >= 0; i--) {
          if (node.attributes[i].kind === 241) {
            checkJsxAttribute((node.attributes[i]), targetAttributesType, nameTable);
          } else {
            ts.Debug.assert(node.attributes[i].kind === 242);
            var spreadType = checkJsxSpreadAttribute((node.attributes[i]), targetAttributesType, nameTable);
            if (isTypeAny(spreadType)) {
              sawSpreadedAny = true;
            }
          }
        }
        if (targetAttributesType && !sawSpreadedAny) {
          var targetProperties = getPropertiesOfType(targetAttributesType);
          for (var i = 0; i < targetProperties.length; i++) {
            if (!(targetProperties[i].flags & 536870912) && nameTable[targetProperties[i].name] === undefined) {
              error(node, ts.Diagnostics.Property_0_is_missing_in_type_1, targetProperties[i].name, typeToString(targetAttributesType));
            }
          }
        }
      }
      function checkJsxExpression(node) {
        if (node.expression) {
          return checkExpression(node.expression);
        } else {
          return unknownType;
        }
      }
      function getDeclarationKindFromSymbol(s) {
        return s.valueDeclaration ? s.valueDeclaration.kind : 142;
      }
      function getDeclarationFlagsFromSymbol(s) {
        return s.valueDeclaration ? ts.getCombinedNodeFlags(s.valueDeclaration) : s.flags & 134217728 ? 8 | 64 : 0;
      }
      function checkClassPropertyAccess(node, left, type, prop) {
        var flags = getDeclarationFlagsFromSymbol(prop);
        var declaringClass = getDeclaredTypeOfSymbol(getParentOfSymbol(prop));
        if (left.kind === 95) {
          var errorNode = node.kind === 169 ? node.name : node.right;
          if (languageVersion < 2 && getDeclarationKindFromSymbol(prop) !== 144) {
            error(errorNode, ts.Diagnostics.Only_public_and_protected_methods_of_the_base_class_are_accessible_via_the_super_keyword);
            return false;
          }
          if (flags & 128) {
            error(errorNode, ts.Diagnostics.Abstract_method_0_in_class_1_cannot_be_accessed_via_super_expression, symbolToString(prop), typeToString(declaringClass));
            return false;
          }
        }
        if (!(flags & (16 | 32))) {
          return true;
        }
        var enclosingClassDeclaration = ts.getContainingClass(node);
        var enclosingClass = enclosingClassDeclaration ? getDeclaredTypeOfSymbol(getSymbolOfNode(enclosingClassDeclaration)) : undefined;
        if (flags & 16) {
          if (declaringClass !== enclosingClass) {
            error(node, ts.Diagnostics.Property_0_is_private_and_only_accessible_within_class_1, symbolToString(prop), typeToString(declaringClass));
            return false;
          }
          return true;
        }
        if (left.kind === 95) {
          return true;
        }
        if (!enclosingClass || !hasBaseType(enclosingClass, declaringClass)) {
          error(node, ts.Diagnostics.Property_0_is_protected_and_only_accessible_within_class_1_and_its_subclasses, symbolToString(prop), typeToString(declaringClass));
          return false;
        }
        if (flags & 64) {
          return true;
        }
        if (type.flags & 33554432) {
          type = getConstraintOfTypeParameter(type);
        }
        if (!(getTargetType(type).flags & (1024 | 2048) && hasBaseType(type, enclosingClass))) {
          error(node, ts.Diagnostics.Property_0_is_protected_and_only_accessible_through_an_instance_of_class_1, symbolToString(prop), typeToString(enclosingClass));
          return false;
        }
        return true;
      }
      function checkPropertyAccessExpression(node) {
        return checkPropertyAccessExpressionOrQualifiedName(node, node.expression, node.name);
      }
      function checkQualifiedName(node) {
        return checkPropertyAccessExpressionOrQualifiedName(node, node.left, node.right);
      }
      function checkPropertyAccessExpressionOrQualifiedName(node, left, right) {
        var type = checkExpression(left);
        if (isTypeAny(type)) {
          return type;
        }
        var apparentType = getApparentType(getWidenedType(type));
        if (apparentType === unknownType) {
          return unknownType;
        }
        var prop = getPropertyOfType(apparentType, right.text);
        if (!prop) {
          if (right.text) {
            error(right, ts.Diagnostics.Property_0_does_not_exist_on_type_1, ts.declarationNameToString(right), typeToString(type.flags & 33554432 ? apparentType : type));
          }
          return unknownType;
        }
        getNodeLinks(node).resolvedSymbol = prop;
        if (prop.parent && prop.parent.flags & 32) {
          checkClassPropertyAccess(node, left, apparentType, prop);
        }
        return getTypeOfSymbol(prop);
      }
      function isValidPropertyAccess(node, propertyName) {
        var left = node.kind === 169 ? node.expression : node.left;
        var type = checkExpression(left);
        if (type !== unknownType && !isTypeAny(type)) {
          var prop = getPropertyOfType(getWidenedType(type), propertyName);
          if (prop && prop.parent && prop.parent.flags & 32) {
            return checkClassPropertyAccess(node, left, type, prop);
          }
        }
        return true;
      }
      function getForInVariableSymbol(node) {
        var initializer = node.initializer;
        if (initializer.kind === 215) {
          var variable = initializer.declarations[0];
          if (variable && !ts.isBindingPattern(variable.name)) {
            return getSymbolOfNode(variable);
          }
        } else if (initializer.kind === 69) {
          return getResolvedSymbol(initializer);
        }
        return undefined;
      }
      function hasNumericPropertyNames(type) {
        return getIndexTypeOfType(type, 1) && !getIndexTypeOfType(type, 0);
      }
      function isForInVariableForNumericPropertyNames(expr) {
        var e = skipParenthesizedNodes(expr);
        if (e.kind === 69) {
          var symbol = getResolvedSymbol(e);
          if (symbol.flags & 3) {
            var child = expr;
            var node = expr.parent;
            while (node) {
              if (node.kind === 203 && child === node.statement && getForInVariableSymbol(node) === symbol && hasNumericPropertyNames(checkExpression(node.expression))) {
                return true;
              }
              child = node;
              node = node.parent;
            }
          }
        }
        return false;
      }
      function checkIndexedAccess(node) {
        if (!node.argumentExpression) {
          var sourceFile = ts.getSourceFileOfNode(node);
          if (node.parent.kind === 172 && node.parent.expression === node) {
            var start = ts.skipTrivia(sourceFile.text, node.expression.end);
            var end = node.end;
            grammarErrorAtPos(sourceFile, start, end - start, ts.Diagnostics.new_T_cannot_be_used_to_create_an_array_Use_new_Array_T_instead);
          } else {
            var start = node.end - "]".length;
            var end = node.end;
            grammarErrorAtPos(sourceFile, start, end - start, ts.Diagnostics.Expression_expected);
          }
        }
        var objectType = getApparentType(checkExpression(node.expression));
        var indexType = node.argumentExpression ? checkExpression(node.argumentExpression) : unknownType;
        if (objectType === unknownType) {
          return unknownType;
        }
        var isConstEnum = isConstEnumObjectType(objectType);
        if (isConstEnum && (!node.argumentExpression || node.argumentExpression.kind !== 9)) {
          error(node.argumentExpression, ts.Diagnostics.A_const_enum_member_can_only_be_accessed_using_a_string_literal);
          return unknownType;
        }
        if (node.argumentExpression) {
          var name_11 = getPropertyNameForIndexedAccess(node.argumentExpression, indexType);
          if (name_11 !== undefined) {
            var prop = getPropertyOfType(objectType, name_11);
            if (prop) {
              getNodeLinks(node).resolvedSymbol = prop;
              return getTypeOfSymbol(prop);
            } else if (isConstEnum) {
              error(node.argumentExpression, ts.Diagnostics.Property_0_does_not_exist_on_const_enum_1, name_11, symbolToString(objectType.symbol));
              return unknownType;
            }
          }
        }
        if (isTypeAnyOrAllConstituentTypesHaveKind(indexType, 258 | 132 | 16777216)) {
          if (isTypeAnyOrAllConstituentTypesHaveKind(indexType, 132) || isForInVariableForNumericPropertyNames(node.argumentExpression)) {
            var numberIndexType = getIndexTypeOfType(objectType, 1);
            if (numberIndexType) {
              return numberIndexType;
            }
          }
          var stringIndexType = getIndexTypeOfType(objectType, 0);
          if (stringIndexType) {
            return stringIndexType;
          }
          if (compilerOptions.noImplicitAny && !compilerOptions.suppressImplicitAnyIndexErrors && !isTypeAny(objectType)) {
            error(node, getIndexTypeOfType(objectType, 1) ? ts.Diagnostics.Element_implicitly_has_an_any_type_because_index_expression_is_not_of_type_number : ts.Diagnostics.Index_signature_of_object_type_implicitly_has_an_any_type);
          }
          return anyType;
        }
        error(node, ts.Diagnostics.An_index_expression_argument_must_be_of_type_string_number_symbol_or_any);
        return unknownType;
      }
      function getPropertyNameForIndexedAccess(indexArgumentExpression, indexArgumentType) {
        if (indexArgumentExpression.kind === 9 || indexArgumentExpression.kind === 8) {
          return indexArgumentExpression.text;
        }
        if (indexArgumentExpression.kind === 170 || indexArgumentExpression.kind === 169) {
          var value = getConstantValue(indexArgumentExpression);
          if (value !== undefined) {
            return value.toString();
          }
        }
        if (checkThatExpressionIsProperSymbolReference(indexArgumentExpression, indexArgumentType, false)) {
          var rightHandSideName = indexArgumentExpression.name.text;
          return ts.getPropertyNameForKnownSymbolName(rightHandSideName);
        }
        return undefined;
      }
      function checkThatExpressionIsProperSymbolReference(expression, expressionType, reportError) {
        if (expressionType === unknownType) {
          return false;
        }
        if (!ts.isWellKnownSymbolSyntactically(expression)) {
          return false;
        }
        if ((expressionType.flags & 16777216) === 0) {
          if (reportError) {
            error(expression, ts.Diagnostics.A_computed_property_name_of_the_form_0_must_be_of_type_symbol, ts.getTextOfNode(expression));
          }
          return false;
        }
        var leftHandSide = expression.expression;
        var leftHandSideSymbol = getResolvedSymbol(leftHandSide);
        if (!leftHandSideSymbol) {
          return false;
        }
        var globalESSymbol = getGlobalESSymbolConstructorSymbol();
        if (!globalESSymbol) {
          return false;
        }
        if (leftHandSideSymbol !== globalESSymbol) {
          if (reportError) {
            error(leftHandSide, ts.Diagnostics.Symbol_reference_does_not_refer_to_the_global_Symbol_constructor_object);
          }
          return false;
        }
        return true;
      }
      function resolveUntypedCall(node) {
        if (node.kind === 173) {
          checkExpression(node.template);
        } else if (node.kind !== 140) {
          ts.forEach(node.arguments, function(argument) {
            checkExpression(argument);
          });
        }
        return anySignature;
      }
      function resolveErrorCall(node) {
        resolveUntypedCall(node);
        return unknownSignature;
      }
      function reorderCandidates(signatures, result) {
        var lastParent;
        var lastSymbol;
        var cutoffIndex = 0;
        var index;
        var specializedIndex = -1;
        var spliceIndex;
        ts.Debug.assert(!result.length);
        for (var _i = 0,
            signatures_2 = signatures; _i < signatures_2.length; _i++) {
          var signature = signatures_2[_i];
          var symbol = signature.declaration && getSymbolOfNode(signature.declaration);
          var parent_6 = signature.declaration && signature.declaration.parent;
          if (!lastSymbol || symbol === lastSymbol) {
            if (lastParent && parent_6 === lastParent) {
              index++;
            } else {
              lastParent = parent_6;
              index = cutoffIndex;
            }
          } else {
            index = cutoffIndex = result.length;
            lastParent = parent_6;
          }
          lastSymbol = symbol;
          if (signature.hasStringLiterals) {
            specializedIndex++;
            spliceIndex = specializedIndex;
            cutoffIndex++;
          } else {
            spliceIndex = index;
          }
          result.splice(spliceIndex, 0, signature);
        }
      }
      function getSpreadArgumentIndex(args) {
        for (var i = 0; i < args.length; i++) {
          var arg = args[i];
          if (arg && arg.kind === 188) {
            return i;
          }
        }
        return -1;
      }
      function hasCorrectArity(node, args, signature) {
        var adjustedArgCount;
        var typeArguments;
        var callIsIncomplete;
        var isDecorator;
        var spreadArgIndex = -1;
        if (node.kind === 173) {
          var tagExpression = node;
          adjustedArgCount = args.length;
          typeArguments = undefined;
          if (tagExpression.template.kind === 186) {
            var templateExpression = tagExpression.template;
            var lastSpan = ts.lastOrUndefined(templateExpression.templateSpans);
            ts.Debug.assert(lastSpan !== undefined);
            callIsIncomplete = ts.nodeIsMissing(lastSpan.literal) || !!lastSpan.literal.isUnterminated;
          } else {
            var templateLiteral = tagExpression.template;
            ts.Debug.assert(templateLiteral.kind === 11);
            callIsIncomplete = !!templateLiteral.isUnterminated;
          }
        } else if (node.kind === 140) {
          isDecorator = true;
          typeArguments = undefined;
          adjustedArgCount = getEffectiveArgumentCount(node, undefined, signature);
        } else {
          var callExpression = node;
          if (!callExpression.arguments) {
            ts.Debug.assert(callExpression.kind === 172);
            return signature.minArgumentCount === 0;
          }
          adjustedArgCount = callExpression.arguments.hasTrailingComma ? args.length + 1 : args.length;
          callIsIncomplete = callExpression.arguments.end === callExpression.end;
          typeArguments = callExpression.typeArguments;
          spreadArgIndex = getSpreadArgumentIndex(args);
        }
        var hasRightNumberOfTypeArgs = !typeArguments || (signature.typeParameters && typeArguments.length === signature.typeParameters.length);
        if (!hasRightNumberOfTypeArgs) {
          return false;
        }
        if (spreadArgIndex >= 0) {
          return isRestParameterIndex(signature, spreadArgIndex);
        }
        if (!signature.hasRestParameter && adjustedArgCount > signature.parameters.length) {
          return false;
        }
        var hasEnoughArguments = adjustedArgCount >= signature.minArgumentCount;
        return callIsIncomplete || hasEnoughArguments;
      }
      function getSingleCallSignature(type) {
        if (type.flags & 80896) {
          var resolved = resolveStructuredTypeMembers(type);
          if (resolved.callSignatures.length === 1 && resolved.constructSignatures.length === 0 && resolved.properties.length === 0 && !resolved.stringIndexType && !resolved.numberIndexType) {
            return resolved.callSignatures[0];
          }
        }
        return undefined;
      }
      function instantiateSignatureInContextOf(signature, contextualSignature, contextualMapper) {
        var context = createInferenceContext(signature.typeParameters, true);
        forEachMatchingParameterType(contextualSignature, signature, function(source, target) {
          inferTypes(context, instantiateType(source, contextualMapper), target);
        });
        return getSignatureInstantiation(signature, getInferredTypes(context));
      }
      function inferTypeArguments(node, signature, args, excludeArgument, context) {
        var typeParameters = signature.typeParameters;
        var inferenceMapper = getInferenceMapper(context);
        for (var i = 0; i < typeParameters.length; i++) {
          if (!context.inferences[i].isFixed) {
            context.inferredTypes[i] = undefined;
          }
        }
        if (context.failedTypeParameterIndex !== undefined && !context.inferences[context.failedTypeParameterIndex].isFixed) {
          context.failedTypeParameterIndex = undefined;
        }
        var argCount = getEffectiveArgumentCount(node, args, signature);
        for (var i = 0; i < argCount; i++) {
          var arg = getEffectiveArgument(node, args, i);
          if (arg === undefined || arg.kind !== 190) {
            var paramType = getTypeAtPosition(signature, i);
            var argType = getEffectiveArgumentType(node, i, arg);
            if (argType === undefined) {
              var mapper = excludeArgument && excludeArgument[i] !== undefined ? identityMapper : inferenceMapper;
              argType = checkExpressionWithContextualType(arg, paramType, mapper);
            }
            inferTypes(context, argType, paramType);
          }
        }
        if (excludeArgument) {
          for (var i = 0; i < argCount; i++) {
            if (excludeArgument[i] === false) {
              var arg = args[i];
              var paramType = getTypeAtPosition(signature, i);
              inferTypes(context, checkExpressionWithContextualType(arg, paramType, inferenceMapper), paramType);
            }
          }
        }
        getInferredTypes(context);
      }
      function checkTypeArguments(signature, typeArgumentNodes, typeArgumentTypes, reportErrors, headMessage) {
        var typeParameters = signature.typeParameters;
        var typeArgumentsAreAssignable = true;
        var mapper;
        for (var i = 0; i < typeParameters.length; i++) {
          if (typeArgumentsAreAssignable) {
            var constraint = getConstraintOfTypeParameter(typeParameters[i]);
            if (constraint) {
              var errorInfo = void 0;
              var typeArgumentHeadMessage = ts.Diagnostics.Type_0_does_not_satisfy_the_constraint_1;
              if (reportErrors && headMessage) {
                errorInfo = ts.chainDiagnosticMessages(errorInfo, typeArgumentHeadMessage);
                typeArgumentHeadMessage = headMessage;
              }
              if (!mapper) {
                mapper = createTypeMapper(typeParameters, typeArgumentTypes);
              }
              var typeArgument = typeArgumentTypes[i];
              typeArgumentsAreAssignable = checkTypeAssignableTo(typeArgument, getTypeWithThisArgument(instantiateType(constraint, mapper), typeArgument), reportErrors ? typeArgumentNodes[i] : undefined, typeArgumentHeadMessage, errorInfo);
            }
          }
        }
        return typeArgumentsAreAssignable;
      }
      function checkApplicableSignature(node, args, signature, relation, excludeArgument, reportErrors) {
        var argCount = getEffectiveArgumentCount(node, args, signature);
        for (var i = 0; i < argCount; i++) {
          var arg = getEffectiveArgument(node, args, i);
          if (arg === undefined || arg.kind !== 190) {
            var paramType = getTypeAtPosition(signature, i);
            var argType = getEffectiveArgumentType(node, i, arg);
            if (argType === undefined) {
              argType = arg.kind === 9 && !reportErrors ? getStringLiteralTypeForText(arg.text) : checkExpressionWithContextualType(arg, paramType, excludeArgument && excludeArgument[i] ? identityMapper : undefined);
            }
            var errorNode = reportErrors ? getEffectiveArgumentErrorNode(node, i, arg) : undefined;
            var headMessage = ts.Diagnostics.Argument_of_type_0_is_not_assignable_to_parameter_of_type_1;
            if (!checkTypeRelatedTo(argType, paramType, relation, errorNode, headMessage)) {
              return false;
            }
          }
        }
        return true;
      }
      function getEffectiveCallArguments(node) {
        var args;
        if (node.kind === 173) {
          var template = node.template;
          args = [undefined];
          if (template.kind === 186) {
            ts.forEach(template.templateSpans, function(span) {
              args.push(span.expression);
            });
          }
        } else if (node.kind === 140) {
          return undefined;
        } else {
          args = node.arguments || emptyArray;
        }
        return args;
      }
      function getEffectiveArgumentCount(node, args, signature) {
        if (node.kind === 140) {
          switch (node.parent.kind) {
            case 217:
            case 189:
              return 1;
            case 142:
              return 2;
            case 144:
            case 146:
            case 147:
              if (languageVersion === 0) {
                return 2;
              }
              return signature.parameters.length >= 3 ? 3 : 2;
            case 139:
              return 3;
          }
        } else {
          return args.length;
        }
      }
      function getEffectiveDecoratorFirstArgumentType(node) {
        if (node.kind === 217) {
          var classSymbol = getSymbolOfNode(node);
          return getTypeOfSymbol(classSymbol);
        }
        if (node.kind === 139) {
          node = node.parent;
          if (node.kind === 145) {
            var classSymbol = getSymbolOfNode(node);
            return getTypeOfSymbol(classSymbol);
          }
        }
        if (node.kind === 142 || node.kind === 144 || node.kind === 146 || node.kind === 147) {
          return getParentTypeOfClassElement(node);
        }
        ts.Debug.fail("Unsupported decorator target.");
        return unknownType;
      }
      function getEffectiveDecoratorSecondArgumentType(node) {
        if (node.kind === 217) {
          ts.Debug.fail("Class decorators should not have a second synthetic argument.");
          return unknownType;
        }
        if (node.kind === 139) {
          node = node.parent;
          if (node.kind === 145) {
            return anyType;
          }
        }
        if (node.kind === 142 || node.kind === 144 || node.kind === 146 || node.kind === 147) {
          var element = node;
          switch (element.name.kind) {
            case 69:
            case 8:
            case 9:
              return getStringLiteralTypeForText(element.name.text);
            case 137:
              var nameType = checkComputedPropertyName(element.name);
              if (allConstituentTypesHaveKind(nameType, 16777216)) {
                return nameType;
              } else {
                return stringType;
              }
            default:
              ts.Debug.fail("Unsupported property name.");
              return unknownType;
          }
        }
        ts.Debug.fail("Unsupported decorator target.");
        return unknownType;
      }
      function getEffectiveDecoratorThirdArgumentType(node) {
        if (node.kind === 217) {
          ts.Debug.fail("Class decorators should not have a third synthetic argument.");
          return unknownType;
        }
        if (node.kind === 139) {
          return numberType;
        }
        if (node.kind === 142) {
          ts.Debug.fail("Property decorators should not have a third synthetic argument.");
          return unknownType;
        }
        if (node.kind === 144 || node.kind === 146 || node.kind === 147) {
          var propertyType = getTypeOfNode(node);
          return createTypedPropertyDescriptorType(propertyType);
        }
        ts.Debug.fail("Unsupported decorator target.");
        return unknownType;
      }
      function getEffectiveDecoratorArgumentType(node, argIndex) {
        if (argIndex === 0) {
          return getEffectiveDecoratorFirstArgumentType(node.parent);
        } else if (argIndex === 1) {
          return getEffectiveDecoratorSecondArgumentType(node.parent);
        } else if (argIndex === 2) {
          return getEffectiveDecoratorThirdArgumentType(node.parent);
        }
        ts.Debug.fail("Decorators should not have a fourth synthetic argument.");
        return unknownType;
      }
      function getEffectiveArgumentType(node, argIndex, arg) {
        if (node.kind === 140) {
          return getEffectiveDecoratorArgumentType(node, argIndex);
        } else if (argIndex === 0 && node.kind === 173) {
          return globalTemplateStringsArrayType;
        }
        return undefined;
      }
      function getEffectiveArgument(node, args, argIndex) {
        if (node.kind === 140 || (argIndex === 0 && node.kind === 173)) {
          return undefined;
        }
        return args[argIndex];
      }
      function getEffectiveArgumentErrorNode(node, argIndex, arg) {
        if (node.kind === 140) {
          return node.expression;
        } else if (argIndex === 0 && node.kind === 173) {
          return node.template;
        } else {
          return arg;
        }
      }
      function resolveCall(node, signatures, candidatesOutArray, headMessage) {
        var isTaggedTemplate = node.kind === 173;
        var isDecorator = node.kind === 140;
        var typeArguments;
        if (!isTaggedTemplate && !isDecorator) {
          typeArguments = node.typeArguments;
          if (node.expression.kind !== 95) {
            ts.forEach(typeArguments, checkSourceElement);
          }
        }
        var candidates = candidatesOutArray || [];
        reorderCandidates(signatures, candidates);
        if (!candidates.length) {
          reportError(ts.Diagnostics.Supplied_parameters_do_not_match_any_signature_of_call_target);
          return resolveErrorCall(node);
        }
        var args = getEffectiveCallArguments(node);
        var excludeArgument;
        if (!isDecorator) {
          for (var i = isTaggedTemplate ? 1 : 0; i < args.length; i++) {
            if (isContextSensitive(args[i])) {
              if (!excludeArgument) {
                excludeArgument = new Array(args.length);
              }
              excludeArgument[i] = true;
            }
          }
        }
        var candidateForArgumentError;
        var candidateForTypeArgumentError;
        var resultOfFailedInference;
        var result;
        if (candidates.length > 1) {
          result = chooseOverload(candidates, subtypeRelation);
        }
        if (!result) {
          candidateForArgumentError = undefined;
          candidateForTypeArgumentError = undefined;
          resultOfFailedInference = undefined;
          result = chooseOverload(candidates, assignableRelation);
        }
        if (result) {
          return result;
        }
        if (candidateForArgumentError) {
          checkApplicableSignature(node, args, candidateForArgumentError, assignableRelation, undefined, true);
        } else if (candidateForTypeArgumentError) {
          if (!isTaggedTemplate && !isDecorator && typeArguments) {
            var typeArguments_2 = node.typeArguments;
            checkTypeArguments(candidateForTypeArgumentError, typeArguments_2, ts.map(typeArguments_2, getTypeFromTypeNode), true, headMessage);
          } else {
            ts.Debug.assert(resultOfFailedInference.failedTypeParameterIndex >= 0);
            var failedTypeParameter = candidateForTypeArgumentError.typeParameters[resultOfFailedInference.failedTypeParameterIndex];
            var inferenceCandidates = getInferenceCandidates(resultOfFailedInference, resultOfFailedInference.failedTypeParameterIndex);
            var diagnosticChainHead = ts.chainDiagnosticMessages(undefined, ts.Diagnostics.The_type_argument_for_type_parameter_0_cannot_be_inferred_from_the_usage_Consider_specifying_the_type_arguments_explicitly, typeToString(failedTypeParameter));
            if (headMessage) {
              diagnosticChainHead = ts.chainDiagnosticMessages(diagnosticChainHead, headMessage);
            }
            reportNoCommonSupertypeError(inferenceCandidates, node.expression || node.tag, diagnosticChainHead);
          }
        } else {
          reportError(ts.Diagnostics.Supplied_parameters_do_not_match_any_signature_of_call_target);
        }
        if (!produceDiagnostics) {
          for (var _i = 0,
              candidates_1 = candidates; _i < candidates_1.length; _i++) {
            var candidate = candidates_1[_i];
            if (hasCorrectArity(node, args, candidate)) {
              if (candidate.typeParameters && typeArguments) {
                candidate = getSignatureInstantiation(candidate, ts.map(typeArguments, getTypeFromTypeNode));
              }
              return candidate;
            }
          }
        }
        return resolveErrorCall(node);
        function reportError(message, arg0, arg1, arg2) {
          var errorInfo;
          errorInfo = ts.chainDiagnosticMessages(errorInfo, message, arg0, arg1, arg2);
          if (headMessage) {
            errorInfo = ts.chainDiagnosticMessages(errorInfo, headMessage);
          }
          diagnostics.add(ts.createDiagnosticForNodeFromMessageChain(node, errorInfo));
        }
        function chooseOverload(candidates, relation) {
          for (var _i = 0,
              candidates_2 = candidates; _i < candidates_2.length; _i++) {
            var originalCandidate = candidates_2[_i];
            if (!hasCorrectArity(node, args, originalCandidate)) {
              continue;
            }
            var candidate = void 0;
            var typeArgumentsAreValid = void 0;
            var inferenceContext = originalCandidate.typeParameters ? createInferenceContext(originalCandidate.typeParameters, false) : undefined;
            while (true) {
              candidate = originalCandidate;
              if (candidate.typeParameters) {
                var typeArgumentTypes = void 0;
                if (typeArguments) {
                  typeArgumentTypes = ts.map(typeArguments, getTypeFromTypeNode);
                  typeArgumentsAreValid = checkTypeArguments(candidate, typeArguments, typeArgumentTypes, false);
                } else {
                  inferTypeArguments(node, candidate, args, excludeArgument, inferenceContext);
                  typeArgumentsAreValid = inferenceContext.failedTypeParameterIndex === undefined;
                  typeArgumentTypes = inferenceContext.inferredTypes;
                }
                if (!typeArgumentsAreValid) {
                  break;
                }
                candidate = getSignatureInstantiation(candidate, typeArgumentTypes);
              }
              if (!checkApplicableSignature(node, args, candidate, relation, excludeArgument, false)) {
                break;
              }
              var index = excludeArgument ? ts.indexOf(excludeArgument, true) : -1;
              if (index < 0) {
                return candidate;
              }
              excludeArgument[index] = false;
            }
            if (originalCandidate.typeParameters) {
              var instantiatedCandidate = candidate;
              if (typeArgumentsAreValid) {
                candidateForArgumentError = instantiatedCandidate;
              } else {
                candidateForTypeArgumentError = originalCandidate;
                if (!typeArguments) {
                  resultOfFailedInference = inferenceContext;
                }
              }
            } else {
              ts.Debug.assert(originalCandidate === candidate);
              candidateForArgumentError = originalCandidate;
            }
          }
          return undefined;
        }
      }
      function resolveCallExpression(node, candidatesOutArray) {
        if (node.expression.kind === 95) {
          var superType = checkSuperExpression(node.expression);
          if (superType !== unknownType) {
            var baseTypeNode = ts.getClassExtendsHeritageClauseElement(ts.getContainingClass(node));
            var baseConstructors = getInstantiatedConstructorsForTypeArguments(superType, baseTypeNode.typeArguments);
            return resolveCall(node, baseConstructors, candidatesOutArray);
          }
          return resolveUntypedCall(node);
        }
        var funcType = checkExpression(node.expression);
        var apparentType = getApparentType(funcType);
        if (apparentType === unknownType) {
          return resolveErrorCall(node);
        }
        var callSignatures = getSignaturesOfType(apparentType, 0);
        var constructSignatures = getSignaturesOfType(apparentType, 1);
        if (isTypeAny(funcType) || (!callSignatures.length && !constructSignatures.length && !(funcType.flags & 16384) && isTypeAssignableTo(funcType, globalFunctionType))) {
          if (funcType !== unknownType && node.typeArguments) {
            error(node, ts.Diagnostics.Untyped_function_calls_may_not_accept_type_arguments);
          }
          return resolveUntypedCall(node);
        }
        if (!callSignatures.length) {
          if (constructSignatures.length) {
            error(node, ts.Diagnostics.Value_of_type_0_is_not_callable_Did_you_mean_to_include_new, typeToString(funcType));
          } else {
            error(node, ts.Diagnostics.Cannot_invoke_an_expression_whose_type_lacks_a_call_signature);
          }
          return resolveErrorCall(node);
        }
        return resolveCall(node, callSignatures, candidatesOutArray);
      }
      function resolveNewExpression(node, candidatesOutArray) {
        if (node.arguments && languageVersion < 1) {
          var spreadIndex = getSpreadArgumentIndex(node.arguments);
          if (spreadIndex >= 0) {
            error(node.arguments[spreadIndex], ts.Diagnostics.Spread_operator_in_new_expressions_is_only_available_when_targeting_ECMAScript_5_and_higher);
          }
        }
        var expressionType = checkExpression(node.expression);
        expressionType = getApparentType(expressionType);
        if (expressionType === unknownType) {
          return resolveErrorCall(node);
        }
        var valueDecl = expressionType.symbol && getClassLikeDeclarationOfSymbol(expressionType.symbol);
        if (valueDecl && valueDecl.flags & 128) {
          error(node, ts.Diagnostics.Cannot_create_an_instance_of_the_abstract_class_0, ts.declarationNameToString(valueDecl.name));
          return resolveErrorCall(node);
        }
        if (isTypeAny(expressionType)) {
          if (node.typeArguments) {
            error(node, ts.Diagnostics.Untyped_function_calls_may_not_accept_type_arguments);
          }
          return resolveUntypedCall(node);
        }
        var constructSignatures = getSignaturesOfType(expressionType, 1);
        if (constructSignatures.length) {
          return resolveCall(node, constructSignatures, candidatesOutArray);
        }
        var callSignatures = getSignaturesOfType(expressionType, 0);
        if (callSignatures.length) {
          var signature = resolveCall(node, callSignatures, candidatesOutArray);
          if (getReturnTypeOfSignature(signature) !== voidType) {
            error(node, ts.Diagnostics.Only_a_void_function_can_be_called_with_the_new_keyword);
          }
          return signature;
        }
        error(node, ts.Diagnostics.Cannot_use_new_with_an_expression_whose_type_lacks_a_call_or_construct_signature);
        return resolveErrorCall(node);
      }
      function resolveTaggedTemplateExpression(node, candidatesOutArray) {
        var tagType = checkExpression(node.tag);
        var apparentType = getApparentType(tagType);
        if (apparentType === unknownType) {
          return resolveErrorCall(node);
        }
        var callSignatures = getSignaturesOfType(apparentType, 0);
        if (isTypeAny(tagType) || (!callSignatures.length && !(tagType.flags & 16384) && isTypeAssignableTo(tagType, globalFunctionType))) {
          return resolveUntypedCall(node);
        }
        if (!callSignatures.length) {
          error(node, ts.Diagnostics.Cannot_invoke_an_expression_whose_type_lacks_a_call_signature);
          return resolveErrorCall(node);
        }
        return resolveCall(node, callSignatures, candidatesOutArray);
      }
      function getDiagnosticHeadMessageForDecoratorResolution(node) {
        switch (node.parent.kind) {
          case 217:
          case 189:
            return ts.Diagnostics.Unable_to_resolve_signature_of_class_decorator_when_called_as_an_expression;
          case 139:
            return ts.Diagnostics.Unable_to_resolve_signature_of_parameter_decorator_when_called_as_an_expression;
          case 142:
            return ts.Diagnostics.Unable_to_resolve_signature_of_property_decorator_when_called_as_an_expression;
          case 144:
          case 146:
          case 147:
            return ts.Diagnostics.Unable_to_resolve_signature_of_method_decorator_when_called_as_an_expression;
        }
      }
      function resolveDecorator(node, candidatesOutArray) {
        var funcType = checkExpression(node.expression);
        var apparentType = getApparentType(funcType);
        if (apparentType === unknownType) {
          return resolveErrorCall(node);
        }
        var callSignatures = getSignaturesOfType(apparentType, 0);
        if (funcType === anyType || (!callSignatures.length && !(funcType.flags & 16384) && isTypeAssignableTo(funcType, globalFunctionType))) {
          return resolveUntypedCall(node);
        }
        var headMessage = getDiagnosticHeadMessageForDecoratorResolution(node);
        if (!callSignatures.length) {
          var errorInfo = void 0;
          errorInfo = ts.chainDiagnosticMessages(errorInfo, ts.Diagnostics.Cannot_invoke_an_expression_whose_type_lacks_a_call_signature);
          errorInfo = ts.chainDiagnosticMessages(errorInfo, headMessage);
          diagnostics.add(ts.createDiagnosticForNodeFromMessageChain(node, errorInfo));
          return resolveErrorCall(node);
        }
        return resolveCall(node, callSignatures, candidatesOutArray, headMessage);
      }
      function getResolvedSignature(node, candidatesOutArray) {
        var links = getNodeLinks(node);
        if (!links.resolvedSignature || candidatesOutArray) {
          links.resolvedSignature = anySignature;
          if (node.kind === 171) {
            links.resolvedSignature = resolveCallExpression(node, candidatesOutArray);
          } else if (node.kind === 172) {
            links.resolvedSignature = resolveNewExpression(node, candidatesOutArray);
          } else if (node.kind === 173) {
            links.resolvedSignature = resolveTaggedTemplateExpression(node, candidatesOutArray);
          } else if (node.kind === 140) {
            links.resolvedSignature = resolveDecorator(node, candidatesOutArray);
          } else {
            ts.Debug.fail("Branch in 'getResolvedSignature' should be unreachable.");
          }
        }
        return links.resolvedSignature;
      }
      function getInferredClassType(symbol) {
        var links = getSymbolLinks(symbol);
        if (!links.inferredClassType) {
          links.inferredClassType = createAnonymousType(undefined, symbol.members, emptyArray, emptyArray, undefined, undefined);
        }
        return links.inferredClassType;
      }
      function checkCallExpression(node) {
        checkGrammarTypeArguments(node, node.typeArguments) || checkGrammarArguments(node, node.arguments);
        var signature = getResolvedSignature(node);
        if (node.expression.kind === 95) {
          return voidType;
        }
        if (node.kind === 172) {
          var declaration = signature.declaration;
          if (declaration && declaration.kind !== 145 && declaration.kind !== 149 && declaration.kind !== 154 && !ts.isJSDocConstructSignature(declaration)) {
            var funcSymbol = checkExpression(node.expression).symbol;
            if (funcSymbol && funcSymbol.members && (funcSymbol.flags & 16)) {
              return getInferredClassType(funcSymbol);
            } else if (compilerOptions.noImplicitAny) {
              error(node, ts.Diagnostics.new_expression_whose_target_lacks_a_construct_signature_implicitly_has_an_any_type);
            }
            return anyType;
          }
        }
        if (ts.isInJavaScriptFile(node) && ts.isRequireCall(node, true)) {
          return resolveExternalModuleTypeByLiteral(node.arguments[0]);
        }
        return getReturnTypeOfSignature(signature);
      }
      function checkTaggedTemplateExpression(node) {
        return getReturnTypeOfSignature(getResolvedSignature(node));
      }
      function checkAssertion(node) {
        var exprType = getRegularTypeOfObjectLiteral(checkExpression(node.expression));
        var targetType = getTypeFromTypeNode(node.type);
        if (produceDiagnostics && targetType !== unknownType) {
          var widenedType = getWidenedType(exprType);
          var bothAreStringLike = someConstituentTypeHasKind(targetType, 258) && someConstituentTypeHasKind(widenedType, 258);
          if (!bothAreStringLike && !(isTypeAssignableTo(targetType, widenedType))) {
            checkTypeAssignableTo(exprType, targetType, node, ts.Diagnostics.Neither_type_0_nor_type_1_is_assignable_to_the_other);
          }
        }
        return targetType;
      }
      function getTypeAtPosition(signature, pos) {
        return signature.hasRestParameter ? pos < signature.parameters.length - 1 ? getTypeOfSymbol(signature.parameters[pos]) : getRestTypeOfSignature(signature) : pos < signature.parameters.length ? getTypeOfSymbol(signature.parameters[pos]) : anyType;
      }
      function assignContextualParameterTypes(signature, context, mapper) {
        var len = signature.parameters.length - (signature.hasRestParameter ? 1 : 0);
        for (var i = 0; i < len; i++) {
          var parameter = signature.parameters[i];
          var contextualParameterType = getTypeAtPosition(context, i);
          assignTypeToParameterAndFixTypeParameters(parameter, contextualParameterType, mapper);
        }
        if (signature.hasRestParameter && isRestParameterIndex(context, signature.parameters.length - 1)) {
          var parameter = ts.lastOrUndefined(signature.parameters);
          var contextualParameterType = getTypeOfSymbol(ts.lastOrUndefined(context.parameters));
          assignTypeToParameterAndFixTypeParameters(parameter, contextualParameterType, mapper);
        }
      }
      function assignBindingElementTypes(node) {
        if (ts.isBindingPattern(node.name)) {
          for (var _i = 0,
              _a = node.name.elements; _i < _a.length; _i++) {
            var element = _a[_i];
            if (element.kind !== 190) {
              if (element.name.kind === 69) {
                getSymbolLinks(getSymbolOfNode(element)).type = getTypeForBindingElement(element);
              }
              assignBindingElementTypes(element);
            }
          }
        }
      }
      function assignTypeToParameterAndFixTypeParameters(parameter, contextualType, mapper) {
        var links = getSymbolLinks(parameter);
        if (!links.type) {
          links.type = instantiateType(contextualType, mapper);
          assignBindingElementTypes(parameter.valueDeclaration);
        } else if (isInferentialContext(mapper)) {
          inferTypes(mapper.context, links.type, instantiateType(contextualType, mapper));
        }
      }
      function getReturnTypeFromJSDocComment(func) {
        var returnTag = ts.getJSDocReturnTag(func);
        if (returnTag && returnTag.typeExpression) {
          return getTypeFromTypeNode(returnTag.typeExpression.type);
        }
        return undefined;
      }
      function createPromiseType(promisedType) {
        var globalPromiseType = getGlobalPromiseType();
        if (globalPromiseType !== emptyGenericType) {
          promisedType = getAwaitedType(promisedType);
          return createTypeReference(globalPromiseType, [promisedType]);
        }
        return emptyObjectType;
      }
      function getReturnTypeFromBody(func, contextualMapper) {
        var contextualSignature = getContextualSignatureForFunctionLikeDeclaration(func);
        if (!func.body) {
          return unknownType;
        }
        var isAsync = ts.isAsyncFunctionLike(func);
        var type;
        if (func.body.kind !== 195) {
          type = checkExpressionCached(func.body, contextualMapper);
          if (isAsync) {
            type = checkAwaitedType(type, func, ts.Diagnostics.Return_expression_in_async_function_does_not_have_a_valid_callable_then_member);
          }
        } else {
          var types = void 0;
          var funcIsGenerator = !!func.asteriskToken;
          if (funcIsGenerator) {
            types = checkAndAggregateYieldOperandTypes(func.body, contextualMapper);
            if (types.length === 0) {
              var iterableIteratorAny = createIterableIteratorType(anyType);
              if (compilerOptions.noImplicitAny) {
                error(func.asteriskToken, ts.Diagnostics.Generator_implicitly_has_type_0_because_it_does_not_yield_any_values_Consider_supplying_a_return_type, typeToString(iterableIteratorAny));
              }
              return iterableIteratorAny;
            }
          } else {
            types = checkAndAggregateReturnExpressionTypes(func.body, contextualMapper, isAsync);
            if (types.length === 0) {
              if (isAsync) {
                var promiseType = createPromiseType(voidType);
                if (promiseType === emptyObjectType) {
                  error(func, ts.Diagnostics.An_async_function_or_method_must_have_a_valid_awaitable_return_type);
                  return unknownType;
                }
                return promiseType;
              } else {
                return voidType;
              }
            }
          }
          type = contextualSignature ? getUnionType(types) : getCommonSupertype(types);
          if (!type) {
            if (funcIsGenerator) {
              error(func, ts.Diagnostics.No_best_common_type_exists_among_yield_expressions);
              return createIterableIteratorType(unknownType);
            } else {
              error(func, ts.Diagnostics.No_best_common_type_exists_among_return_expressions);
              return getUnionType(types);
            }
          }
          if (funcIsGenerator) {
            type = createIterableIteratorType(type);
          }
        }
        if (!contextualSignature) {
          reportErrorsFromWidening(func, type);
        }
        var widenedType = getWidenedType(type);
        if (isAsync) {
          var promiseType = createPromiseType(widenedType);
          if (promiseType === emptyObjectType) {
            error(func, ts.Diagnostics.An_async_function_or_method_must_have_a_valid_awaitable_return_type);
            return unknownType;
          }
          return promiseType;
        } else {
          return widenedType;
        }
      }
      function checkAndAggregateYieldOperandTypes(body, contextualMapper) {
        var aggregatedTypes = [];
        ts.forEachYieldExpression(body, function(yieldExpression) {
          var expr = yieldExpression.expression;
          if (expr) {
            var type = checkExpressionCached(expr, contextualMapper);
            if (yieldExpression.asteriskToken) {
              type = checkElementTypeOfIterable(type, yieldExpression.expression);
            }
            if (!ts.contains(aggregatedTypes, type)) {
              aggregatedTypes.push(type);
            }
          }
        });
        return aggregatedTypes;
      }
      function checkAndAggregateReturnExpressionTypes(body, contextualMapper, isAsync) {
        var aggregatedTypes = [];
        ts.forEachReturnStatement(body, function(returnStatement) {
          var expr = returnStatement.expression;
          if (expr) {
            var type = checkExpressionCached(expr, contextualMapper);
            if (isAsync) {
              type = checkAwaitedType(type, body.parent, ts.Diagnostics.Return_expression_in_async_function_does_not_have_a_valid_callable_then_member);
            }
            if (!ts.contains(aggregatedTypes, type)) {
              aggregatedTypes.push(type);
            }
          }
        });
        return aggregatedTypes;
      }
      function checkAllCodePathsInNonVoidFunctionReturnOrThrow(func, returnType) {
        if (!produceDiagnostics) {
          return;
        }
        if (returnType === voidType || isTypeAny(returnType) || (returnType && (returnType.flags & 16384) && someConstituentTypeHasKind(returnType, 1 | 16))) {
          return;
        }
        if (ts.nodeIsMissing(func.body) || func.body.kind !== 195 || !(func.flags & 524288)) {
          return;
        }
        var hasExplicitReturn = func.flags & 1048576;
        if (returnType && !hasExplicitReturn) {
          error(func.type, ts.Diagnostics.A_function_whose_declared_type_is_neither_void_nor_any_must_return_a_value);
        } else if (compilerOptions.noImplicitReturns) {
          if (!returnType) {
            var inferredReturnType = hasExplicitReturn ? getReturnTypeOfSignature(getSignatureFromDeclaration(func)) : voidType;
            if (inferredReturnType === voidType || isTypeAny(inferredReturnType)) {
              return;
            }
          }
          error(func.type || func, ts.Diagnostics.Not_all_code_paths_return_a_value);
        }
      }
      function checkFunctionExpressionOrObjectLiteralMethod(node, contextualMapper) {
        ts.Debug.assert(node.kind !== 144 || ts.isObjectLiteralMethod(node));
        var hasGrammarError = checkGrammarFunctionLikeDeclaration(node);
        if (!hasGrammarError && node.kind === 176) {
          checkGrammarForGenerator(node);
        }
        if (contextualMapper === identityMapper && isContextSensitive(node)) {
          checkNodeDeferred(node);
          return anyFunctionType;
        }
        var links = getNodeLinks(node);
        var type = getTypeOfSymbol(node.symbol);
        var contextSensitive = isContextSensitive(node);
        var mightFixTypeParameters = contextSensitive && isInferentialContext(contextualMapper);
        if (mightFixTypeParameters || !(links.flags & 1024)) {
          var contextualSignature = getContextualSignature(node);
          var contextChecked = !!(links.flags & 1024);
          if (mightFixTypeParameters || !contextChecked) {
            links.flags |= 1024;
            if (contextualSignature) {
              var signature = getSignaturesOfType(type, 0)[0];
              if (contextSensitive) {
                assignContextualParameterTypes(signature, contextualSignature, contextualMapper || identityMapper);
              }
              if (mightFixTypeParameters || !node.type && !signature.resolvedReturnType) {
                var returnType = getReturnTypeFromBody(node, contextualMapper);
                if (!signature.resolvedReturnType) {
                  signature.resolvedReturnType = returnType;
                }
              }
            }
            if (!contextChecked) {
              checkSignatureDeclaration(node);
              checkNodeDeferred(node);
            }
          }
        }
        if (produceDiagnostics && node.kind !== 144 && node.kind !== 143) {
          checkCollisionWithCapturedSuperVariable(node, node.name);
          checkCollisionWithCapturedThisVariable(node, node.name);
        }
        return type;
      }
      function checkFunctionExpressionOrObjectLiteralMethodDeferred(node) {
        ts.Debug.assert(node.kind !== 144 || ts.isObjectLiteralMethod(node));
        var isAsync = ts.isAsyncFunctionLike(node);
        var returnOrPromisedType = node.type && (isAsync ? checkAsyncFunctionReturnType(node) : getTypeFromTypeNode(node.type));
        if (!node.asteriskToken) {
          checkAllCodePathsInNonVoidFunctionReturnOrThrow(node, returnOrPromisedType);
        }
        if (node.body) {
          if (!node.type) {
            getReturnTypeOfSignature(getSignatureFromDeclaration(node));
          }
          if (node.body.kind === 195) {
            checkSourceElement(node.body);
          } else {
            var exprType = checkExpression(node.body);
            if (returnOrPromisedType) {
              if (isAsync) {
                var awaitedType = checkAwaitedType(exprType, node.body, ts.Diagnostics.Expression_body_for_async_arrow_function_does_not_have_a_valid_callable_then_member);
                checkTypeAssignableTo(awaitedType, returnOrPromisedType, node.body);
              } else {
                checkTypeAssignableTo(exprType, returnOrPromisedType, node.body);
              }
            }
          }
        }
      }
      function checkArithmeticOperandType(operand, type, diagnostic) {
        if (!isTypeAnyOrAllConstituentTypesHaveKind(type, 132)) {
          error(operand, diagnostic);
          return false;
        }
        return true;
      }
      function checkReferenceExpression(n, invalidReferenceMessage, constantVariableMessage) {
        function findSymbol(n) {
          var symbol = getNodeLinks(n).resolvedSymbol;
          return symbol && getExportSymbolOfValueSymbolIfExported(symbol);
        }
        function isReferenceOrErrorExpression(n) {
          switch (n.kind) {
            case 69:
              {
                var symbol = findSymbol(n);
                return !symbol || symbol === unknownSymbol || symbol === argumentsSymbol || (symbol.flags & 3) !== 0;
              }
            case 169:
              {
                var symbol = findSymbol(n);
                return !symbol || symbol === unknownSymbol || (symbol.flags & ~8) !== 0;
              }
            case 170:
              return true;
            case 175:
              return isReferenceOrErrorExpression(n.expression);
            default:
              return false;
          }
        }
        function isConstVariableReference(n) {
          switch (n.kind) {
            case 69:
            case 169:
              {
                var symbol = findSymbol(n);
                return symbol && (symbol.flags & 3) !== 0 && (getDeclarationFlagsFromSymbol(symbol) & 16384) !== 0;
              }
            case 170:
              {
                var index = n.argumentExpression;
                var symbol = findSymbol(n.expression);
                if (symbol && index && index.kind === 9) {
                  var name_12 = index.text;
                  var prop = getPropertyOfType(getTypeOfSymbol(symbol), name_12);
                  return prop && (prop.flags & 3) !== 0 && (getDeclarationFlagsFromSymbol(prop) & 16384) !== 0;
                }
                return false;
              }
            case 175:
              return isConstVariableReference(n.expression);
            default:
              return false;
          }
        }
        if (!isReferenceOrErrorExpression(n)) {
          error(n, invalidReferenceMessage);
          return false;
        }
        if (isConstVariableReference(n)) {
          error(n, constantVariableMessage);
          return false;
        }
        return true;
      }
      function checkDeleteExpression(node) {
        checkExpression(node.expression);
        return booleanType;
      }
      function checkTypeOfExpression(node) {
        checkExpression(node.expression);
        return stringType;
      }
      function checkVoidExpression(node) {
        checkExpression(node.expression);
        return undefinedType;
      }
      function checkAwaitExpression(node) {
        if (produceDiagnostics) {
          if (!(node.parserContextFlags & 8)) {
            grammarErrorOnFirstToken(node, ts.Diagnostics.await_expression_is_only_allowed_within_an_async_function);
          }
          if (isInParameterInitializerBeforeContainingFunction(node)) {
            error(node, ts.Diagnostics.await_expressions_cannot_be_used_in_a_parameter_initializer);
          }
        }
        var operandType = checkExpression(node.expression);
        return checkAwaitedType(operandType, node);
      }
      function checkPrefixUnaryExpression(node) {
        var operandType = checkExpression(node.operand);
        switch (node.operator) {
          case 35:
          case 36:
          case 50:
            if (someConstituentTypeHasKind(operandType, 16777216)) {
              error(node.operand, ts.Diagnostics.The_0_operator_cannot_be_applied_to_type_symbol, ts.tokenToString(node.operator));
            }
            return numberType;
          case 49:
            return booleanType;
          case 41:
          case 42:
            var ok = checkArithmeticOperandType(node.operand, operandType, ts.Diagnostics.An_arithmetic_operand_must_be_of_type_any_number_or_an_enum_type);
            if (ok) {
              checkReferenceExpression(node.operand, ts.Diagnostics.The_operand_of_an_increment_or_decrement_operator_must_be_a_variable_property_or_indexer, ts.Diagnostics.The_operand_of_an_increment_or_decrement_operator_cannot_be_a_constant);
            }
            return numberType;
        }
        return unknownType;
      }
      function checkPostfixUnaryExpression(node) {
        var operandType = checkExpression(node.operand);
        var ok = checkArithmeticOperandType(node.operand, operandType, ts.Diagnostics.An_arithmetic_operand_must_be_of_type_any_number_or_an_enum_type);
        if (ok) {
          checkReferenceExpression(node.operand, ts.Diagnostics.The_operand_of_an_increment_or_decrement_operator_must_be_a_variable_property_or_indexer, ts.Diagnostics.The_operand_of_an_increment_or_decrement_operator_cannot_be_a_constant);
        }
        return numberType;
      }
      function someConstituentTypeHasKind(type, kind) {
        if (type.flags & kind) {
          return true;
        }
        if (type.flags & 49152) {
          var types = type.types;
          for (var _i = 0,
              types_10 = types; _i < types_10.length; _i++) {
            var current = types_10[_i];
            if (current.flags & kind) {
              return true;
            }
          }
          return false;
        }
        return false;
      }
      function allConstituentTypesHaveKind(type, kind) {
        if (type.flags & kind) {
          return true;
        }
        if (type.flags & 49152) {
          var types = type.types;
          for (var _i = 0,
              types_11 = types; _i < types_11.length; _i++) {
            var current = types_11[_i];
            if (!(current.flags & kind)) {
              return false;
            }
          }
          return true;
        }
        return false;
      }
      function isConstEnumObjectType(type) {
        return type.flags & (80896 | 65536) && type.symbol && isConstEnumSymbol(type.symbol);
      }
      function isConstEnumSymbol(symbol) {
        return (symbol.flags & 128) !== 0;
      }
      function checkInstanceOfExpression(left, right, leftType, rightType) {
        if (allConstituentTypesHaveKind(leftType, 16777726)) {
          error(left, ts.Diagnostics.The_left_hand_side_of_an_instanceof_expression_must_be_of_type_any_an_object_type_or_a_type_parameter);
        }
        if (!(isTypeAny(rightType) || isTypeSubtypeOf(rightType, globalFunctionType))) {
          error(right, ts.Diagnostics.The_right_hand_side_of_an_instanceof_expression_must_be_of_type_any_or_of_a_type_assignable_to_the_Function_interface_type);
        }
        return booleanType;
      }
      function checkInExpression(left, right, leftType, rightType) {
        if (!isTypeAnyOrAllConstituentTypesHaveKind(leftType, 258 | 132 | 16777216)) {
          error(left, ts.Diagnostics.The_left_hand_side_of_an_in_expression_must_be_of_type_any_string_number_or_symbol);
        }
        if (!isTypeAnyOrAllConstituentTypesHaveKind(rightType, 80896 | 512)) {
          error(right, ts.Diagnostics.The_right_hand_side_of_an_in_expression_must_be_of_type_any_an_object_type_or_a_type_parameter);
        }
        return booleanType;
      }
      function checkObjectLiteralAssignment(node, sourceType, contextualMapper) {
        var properties = node.properties;
        for (var _i = 0,
            properties_3 = properties; _i < properties_3.length; _i++) {
          var p = properties_3[_i];
          if (p.kind === 248 || p.kind === 249) {
            var name_13 = p.name;
            if (name_13.kind === 137) {
              checkComputedPropertyName(name_13);
            }
            if (isComputedNonLiteralName(name_13)) {
              continue;
            }
            var text = getTextOfPropertyName(name_13);
            var type = isTypeAny(sourceType) ? sourceType : getTypeOfPropertyOfType(sourceType, text) || isNumericLiteralName(text) && getIndexTypeOfType(sourceType, 1) || getIndexTypeOfType(sourceType, 0);
            if (type) {
              if (p.kind === 249) {
                checkDestructuringAssignment(p, type);
              } else {
                checkDestructuringAssignment(p.initializer, type);
              }
            } else {
              error(name_13, ts.Diagnostics.Type_0_has_no_property_1_and_no_string_index_signature, typeToString(sourceType), ts.declarationNameToString(name_13));
            }
          } else {
            error(p, ts.Diagnostics.Property_assignment_expected);
          }
        }
        return sourceType;
      }
      function checkArrayLiteralAssignment(node, sourceType, contextualMapper) {
        var elementType = checkIteratedTypeOrElementType(sourceType, node, false) || unknownType;
        var elements = node.elements;
        for (var i = 0; i < elements.length; i++) {
          var e = elements[i];
          if (e.kind !== 190) {
            if (e.kind !== 188) {
              var propName = "" + i;
              var type = isTypeAny(sourceType) ? sourceType : isTupleLikeType(sourceType) ? getTypeOfPropertyOfType(sourceType, propName) : elementType;
              if (type) {
                checkDestructuringAssignment(e, type, contextualMapper);
              } else {
                if (isTupleType(sourceType)) {
                  error(e, ts.Diagnostics.Tuple_type_0_with_length_1_cannot_be_assigned_to_tuple_with_length_2, typeToString(sourceType), sourceType.elementTypes.length, elements.length);
                } else {
                  error(e, ts.Diagnostics.Type_0_has_no_property_1, typeToString(sourceType), propName);
                }
              }
            } else {
              if (i < elements.length - 1) {
                error(e, ts.Diagnostics.A_rest_element_must_be_last_in_an_array_destructuring_pattern);
              } else {
                var restExpression = e.expression;
                if (restExpression.kind === 184 && restExpression.operatorToken.kind === 56) {
                  error(restExpression.operatorToken, ts.Diagnostics.A_rest_element_cannot_have_an_initializer);
                } else {
                  checkDestructuringAssignment(restExpression, createArrayType(elementType), contextualMapper);
                }
              }
            }
          }
        }
        return sourceType;
      }
      function checkDestructuringAssignment(exprOrAssignment, sourceType, contextualMapper) {
        var target;
        if (exprOrAssignment.kind === 249) {
          var prop = exprOrAssignment;
          if (prop.objectAssignmentInitializer) {
            checkBinaryLikeExpression(prop.name, prop.equalsToken, prop.objectAssignmentInitializer, contextualMapper);
          }
          target = exprOrAssignment.name;
        } else {
          target = exprOrAssignment;
        }
        if (target.kind === 184 && target.operatorToken.kind === 56) {
          checkBinaryExpression(target, contextualMapper);
          target = target.left;
        }
        if (target.kind === 168) {
          return checkObjectLiteralAssignment(target, sourceType, contextualMapper);
        }
        if (target.kind === 167) {
          return checkArrayLiteralAssignment(target, sourceType, contextualMapper);
        }
        return checkReferenceAssignment(target, sourceType, contextualMapper);
      }
      function checkReferenceAssignment(target, sourceType, contextualMapper) {
        var targetType = checkExpression(target, contextualMapper);
        if (checkReferenceExpression(target, ts.Diagnostics.Invalid_left_hand_side_of_assignment_expression, ts.Diagnostics.Left_hand_side_of_assignment_expression_cannot_be_a_constant)) {
          checkTypeAssignableTo(sourceType, targetType, target, undefined);
        }
        return sourceType;
      }
      function checkBinaryExpression(node, contextualMapper) {
        return checkBinaryLikeExpression(node.left, node.operatorToken, node.right, contextualMapper, node);
      }
      function checkBinaryLikeExpression(left, operatorToken, right, contextualMapper, errorNode) {
        var operator = operatorToken.kind;
        if (operator === 56 && (left.kind === 168 || left.kind === 167)) {
          return checkDestructuringAssignment(left, checkExpression(right, contextualMapper), contextualMapper);
        }
        var leftType = checkExpression(left, contextualMapper);
        var rightType = checkExpression(right, contextualMapper);
        switch (operator) {
          case 37:
          case 38:
          case 59:
          case 60:
          case 39:
          case 61:
          case 40:
          case 62:
          case 36:
          case 58:
          case 43:
          case 63:
          case 44:
          case 64:
          case 45:
          case 65:
          case 47:
          case 67:
          case 48:
          case 68:
          case 46:
          case 66:
            if (leftType.flags & (32 | 64))
              leftType = rightType;
            if (rightType.flags & (32 | 64))
              rightType = leftType;
            var suggestedOperator = void 0;
            if ((leftType.flags & 8) && (rightType.flags & 8) && (suggestedOperator = getSuggestedBooleanOperator(operatorToken.kind)) !== undefined) {
              error(errorNode || operatorToken, ts.Diagnostics.The_0_operator_is_not_allowed_for_boolean_types_Consider_using_1_instead, ts.tokenToString(operatorToken.kind), ts.tokenToString(suggestedOperator));
            } else {
              var leftOk = checkArithmeticOperandType(left, leftType, ts.Diagnostics.The_left_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_or_an_enum_type);
              var rightOk = checkArithmeticOperandType(right, rightType, ts.Diagnostics.The_right_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_or_an_enum_type);
              if (leftOk && rightOk) {
                checkAssignmentOperator(numberType);
              }
            }
            return numberType;
          case 35:
          case 57:
            if (leftType.flags & (32 | 64))
              leftType = rightType;
            if (rightType.flags & (32 | 64))
              rightType = leftType;
            var resultType = void 0;
            if (allConstituentTypesHaveKind(leftType, 132) && allConstituentTypesHaveKind(rightType, 132)) {
              resultType = numberType;
            } else {
              if (allConstituentTypesHaveKind(leftType, 258) || allConstituentTypesHaveKind(rightType, 258)) {
                resultType = stringType;
              } else if (isTypeAny(leftType) || isTypeAny(rightType)) {
                resultType = leftType === unknownType || rightType === unknownType ? unknownType : anyType;
              }
              if (resultType && !checkForDisallowedESSymbolOperand(operator)) {
                return resultType;
              }
            }
            if (!resultType) {
              reportOperatorError();
              return anyType;
            }
            if (operator === 57) {
              checkAssignmentOperator(resultType);
            }
            return resultType;
          case 25:
          case 27:
          case 28:
          case 29:
            if (!checkForDisallowedESSymbolOperand(operator)) {
              return booleanType;
            }
          case 30:
          case 31:
          case 32:
          case 33:
            if (someConstituentTypeHasKind(leftType, 258) && someConstituentTypeHasKind(rightType, 258)) {
              return booleanType;
            }
            if (!isTypeAssignableTo(leftType, rightType) && !isTypeAssignableTo(rightType, leftType)) {
              reportOperatorError();
            }
            return booleanType;
          case 91:
            return checkInstanceOfExpression(left, right, leftType, rightType);
          case 90:
            return checkInExpression(left, right, leftType, rightType);
          case 51:
            return rightType;
          case 52:
            return getUnionType([leftType, rightType]);
          case 56:
            checkAssignmentOperator(rightType);
            return getRegularTypeOfObjectLiteral(rightType);
          case 24:
            return rightType;
        }
        function checkForDisallowedESSymbolOperand(operator) {
          var offendingSymbolOperand = someConstituentTypeHasKind(leftType, 16777216) ? left : someConstituentTypeHasKind(rightType, 16777216) ? right : undefined;
          if (offendingSymbolOperand) {
            error(offendingSymbolOperand, ts.Diagnostics.The_0_operator_cannot_be_applied_to_type_symbol, ts.tokenToString(operator));
            return false;
          }
          return true;
        }
        function getSuggestedBooleanOperator(operator) {
          switch (operator) {
            case 47:
            case 67:
              return 52;
            case 48:
            case 68:
              return 33;
            case 46:
            case 66:
              return 51;
            default:
              return undefined;
          }
        }
        function checkAssignmentOperator(valueType) {
          if (produceDiagnostics && operator >= 56 && operator <= 68) {
            var ok = checkReferenceExpression(left, ts.Diagnostics.Invalid_left_hand_side_of_assignment_expression, ts.Diagnostics.Left_hand_side_of_assignment_expression_cannot_be_a_constant);
            if (ok) {
              checkTypeAssignableTo(valueType, leftType, left, undefined);
            }
          }
        }
        function reportOperatorError() {
          error(errorNode || operatorToken, ts.Diagnostics.Operator_0_cannot_be_applied_to_types_1_and_2, ts.tokenToString(operatorToken.kind), typeToString(leftType), typeToString(rightType));
        }
      }
      function isYieldExpressionInClass(node) {
        var current = node;
        var parent = node.parent;
        while (parent) {
          if (ts.isFunctionLike(parent) && current === parent.body) {
            return false;
          } else if (ts.isClassLike(current)) {
            return true;
          }
          current = parent;
          parent = parent.parent;
        }
        return false;
      }
      function checkYieldExpression(node) {
        if (produceDiagnostics) {
          if (!(node.parserContextFlags & 2) || isYieldExpressionInClass(node)) {
            grammarErrorOnFirstToken(node, ts.Diagnostics.A_yield_expression_is_only_allowed_in_a_generator_body);
          }
          if (isInParameterInitializerBeforeContainingFunction(node)) {
            error(node, ts.Diagnostics.yield_expressions_cannot_be_used_in_a_parameter_initializer);
          }
        }
        if (node.expression) {
          var func = ts.getContainingFunction(node);
          if (func && func.asteriskToken) {
            var expressionType = checkExpressionCached(node.expression, undefined);
            var expressionElementType = void 0;
            var nodeIsYieldStar = !!node.asteriskToken;
            if (nodeIsYieldStar) {
              expressionElementType = checkElementTypeOfIterable(expressionType, node.expression);
            }
            if (func.type) {
              var signatureElementType = getElementTypeOfIterableIterator(getTypeFromTypeNode(func.type)) || anyType;
              if (nodeIsYieldStar) {
                checkTypeAssignableTo(expressionElementType, signatureElementType, node.expression, undefined);
              } else {
                checkTypeAssignableTo(expressionType, signatureElementType, node.expression, undefined);
              }
            }
          }
        }
        return anyType;
      }
      function checkConditionalExpression(node, contextualMapper) {
        checkExpression(node.condition);
        var type1 = checkExpression(node.whenTrue, contextualMapper);
        var type2 = checkExpression(node.whenFalse, contextualMapper);
        return getUnionType([type1, type2]);
      }
      function checkStringLiteralExpression(node) {
        var contextualType = getContextualType(node);
        if (contextualType && contextualTypeIsStringLiteralType(contextualType)) {
          return getStringLiteralTypeForText(node.text);
        }
        return stringType;
      }
      function checkTemplateExpression(node) {
        ts.forEach(node.templateSpans, function(templateSpan) {
          checkExpression(templateSpan.expression);
        });
        return stringType;
      }
      function checkExpressionWithContextualType(node, contextualType, contextualMapper) {
        var saveContextualType = node.contextualType;
        node.contextualType = contextualType;
        var result = checkExpression(node, contextualMapper);
        node.contextualType = saveContextualType;
        return result;
      }
      function checkExpressionCached(node, contextualMapper) {
        var links = getNodeLinks(node);
        if (!links.resolvedType) {
          links.resolvedType = checkExpression(node, contextualMapper);
        }
        return links.resolvedType;
      }
      function checkPropertyAssignment(node, contextualMapper) {
        if (node.name.kind === 137) {
          checkComputedPropertyName(node.name);
        }
        return checkExpression(node.initializer, contextualMapper);
      }
      function checkObjectLiteralMethod(node, contextualMapper) {
        checkGrammarMethod(node);
        if (node.name.kind === 137) {
          checkComputedPropertyName(node.name);
        }
        var uninstantiatedType = checkFunctionExpressionOrObjectLiteralMethod(node, contextualMapper);
        return instantiateTypeWithSingleGenericCallSignature(node, uninstantiatedType, contextualMapper);
      }
      function instantiateTypeWithSingleGenericCallSignature(node, type, contextualMapper) {
        if (isInferentialContext(contextualMapper)) {
          var signature = getSingleCallSignature(type);
          if (signature && signature.typeParameters) {
            var contextualType = getApparentTypeOfContextualType(node);
            if (contextualType) {
              var contextualSignature = getSingleCallSignature(contextualType);
              if (contextualSignature && !contextualSignature.typeParameters) {
                return getOrCreateTypeFromSignature(instantiateSignatureInContextOf(signature, contextualSignature, contextualMapper));
              }
            }
          }
        }
        return type;
      }
      function checkExpression(node, contextualMapper) {
        var type;
        if (node.kind === 136) {
          type = checkQualifiedName(node);
        } else {
          var uninstantiatedType = checkExpressionWorker(node, contextualMapper);
          type = instantiateTypeWithSingleGenericCallSignature(node, uninstantiatedType, contextualMapper);
        }
        if (isConstEnumObjectType(type)) {
          var ok = (node.parent.kind === 169 && node.parent.expression === node) || (node.parent.kind === 170 && node.parent.expression === node) || ((node.kind === 69 || node.kind === 136) && isInRightSideOfImportOrExportAssignment(node));
          if (!ok) {
            error(node, ts.Diagnostics.const_enums_can_only_be_used_in_property_or_index_access_expressions_or_the_right_hand_side_of_an_import_declaration_or_export_assignment);
          }
        }
        return type;
      }
      function checkNumericLiteral(node) {
        checkGrammarNumericLiteral(node);
        return numberType;
      }
      function checkExpressionWorker(node, contextualMapper) {
        switch (node.kind) {
          case 69:
            return checkIdentifier(node);
          case 97:
            return checkThisExpression(node);
          case 95:
            return checkSuperExpression(node);
          case 93:
            return nullType;
          case 99:
          case 84:
            return booleanType;
          case 8:
            return checkNumericLiteral(node);
          case 186:
            return checkTemplateExpression(node);
          case 9:
            return checkStringLiteralExpression(node);
          case 11:
            return stringType;
          case 10:
            return globalRegExpType;
          case 167:
            return checkArrayLiteral(node, contextualMapper);
          case 168:
            return checkObjectLiteral(node, contextualMapper);
          case 169:
            return checkPropertyAccessExpression(node);
          case 170:
            return checkIndexedAccess(node);
          case 171:
          case 172:
            return checkCallExpression(node);
          case 173:
            return checkTaggedTemplateExpression(node);
          case 175:
            return checkExpression(node.expression, contextualMapper);
          case 189:
            return checkClassExpression(node);
          case 176:
          case 177:
            return checkFunctionExpressionOrObjectLiteralMethod(node, contextualMapper);
          case 179:
            return checkTypeOfExpression(node);
          case 174:
          case 192:
            return checkAssertion(node);
          case 178:
            return checkDeleteExpression(node);
          case 180:
            return checkVoidExpression(node);
          case 181:
            return checkAwaitExpression(node);
          case 182:
            return checkPrefixUnaryExpression(node);
          case 183:
            return checkPostfixUnaryExpression(node);
          case 184:
            return checkBinaryExpression(node, contextualMapper);
          case 185:
            return checkConditionalExpression(node, contextualMapper);
          case 188:
            return checkSpreadElementExpression(node, contextualMapper);
          case 190:
            return undefinedType;
          case 187:
            return checkYieldExpression(node);
          case 243:
            return checkJsxExpression(node);
          case 236:
            return checkJsxElement(node);
          case 237:
            return checkJsxSelfClosingElement(node);
          case 238:
            ts.Debug.fail("Shouldn't ever directly check a JsxOpeningElement");
        }
        return unknownType;
      }
      function checkTypeParameter(node) {
        if (node.expression) {
          grammarErrorOnFirstToken(node.expression, ts.Diagnostics.Type_expected);
        }
        checkSourceElement(node.constraint);
        getConstraintOfTypeParameter(getDeclaredTypeOfTypeParameter(getSymbolOfNode(node)));
        if (produceDiagnostics) {
          checkTypeNameIsReserved(node.name, ts.Diagnostics.Type_parameter_name_cannot_be_0);
        }
      }
      function checkParameter(node) {
        checkGrammarDecorators(node) || checkGrammarModifiers(node);
        checkVariableLikeDeclaration(node);
        var func = ts.getContainingFunction(node);
        if (node.flags & 56) {
          func = ts.getContainingFunction(node);
          if (!(func.kind === 145 && ts.nodeIsPresent(func.body))) {
            error(node, ts.Diagnostics.A_parameter_property_is_only_allowed_in_a_constructor_implementation);
          }
        }
        if (node.questionToken && ts.isBindingPattern(node.name) && func.body) {
          error(node, ts.Diagnostics.A_binding_pattern_parameter_cannot_be_optional_in_an_implementation_signature);
        }
        if (node.dotDotDotToken && !ts.isBindingPattern(node.name) && !isArrayType(getTypeOfSymbol(node.symbol))) {
          error(node, ts.Diagnostics.A_rest_parameter_must_be_of_an_array_type);
        }
      }
      function isSyntacticallyValidGenerator(node) {
        if (!node.asteriskToken || !node.body) {
          return false;
        }
        return node.kind === 144 || node.kind === 216 || node.kind === 176;
      }
      function getTypePredicateParameterIndex(parameterList, parameter) {
        if (parameterList) {
          for (var i = 0; i < parameterList.length; i++) {
            var param = parameterList[i];
            if (param.name.kind === 69 && param.name.text === parameter.text) {
              return i;
            }
          }
        }
        return -1;
      }
      function checkTypePredicate(node) {
        var parent = getTypePredicateParent(node);
        if (!parent) {
          error(node, ts.Diagnostics.A_type_predicate_is_only_allowed_in_return_type_position_for_functions_and_methods);
          return;
        }
        var typePredicate = getSignatureFromDeclaration(parent).typePredicate;
        if (!typePredicate) {
          return;
        }
        var parameterName = node.parameterName;
        if (ts.isThisTypePredicate(typePredicate)) {
          getTypeFromThisTypeNode(parameterName);
        } else {
          if (typePredicate.parameterIndex >= 0) {
            if (parent.parameters[typePredicate.parameterIndex].dotDotDotToken) {
              error(parameterName, ts.Diagnostics.A_type_predicate_cannot_reference_a_rest_parameter);
            } else {
              checkTypeAssignableTo(typePredicate.type, getTypeOfNode(parent.parameters[typePredicate.parameterIndex]), node.type);
            }
          } else if (parameterName) {
            var hasReportedError = false;
            for (var _i = 0,
                _a = parent.parameters; _i < _a.length; _i++) {
              var name_14 = _a[_i].name;
              if (ts.isBindingPattern(name_14) && checkIfTypePredicateVariableIsDeclaredInBindingPattern(name_14, parameterName, typePredicate.parameterName)) {
                hasReportedError = true;
                break;
              }
            }
            if (!hasReportedError) {
              error(node.parameterName, ts.Diagnostics.Cannot_find_parameter_0, typePredicate.parameterName);
            }
          }
        }
      }
      function getTypePredicateParent(node) {
        switch (node.parent.kind) {
          case 177:
          case 148:
          case 216:
          case 176:
          case 153:
          case 144:
          case 143:
            var parent_7 = node.parent;
            if (node === parent_7.type) {
              return parent_7;
            }
        }
      }
      function checkIfTypePredicateVariableIsDeclaredInBindingPattern(pattern, predicateVariableNode, predicateVariableName) {
        for (var _i = 0,
            _a = pattern.elements; _i < _a.length; _i++) {
          var name_15 = _a[_i].name;
          if (name_15.kind === 69 && name_15.text === predicateVariableName) {
            error(predicateVariableNode, ts.Diagnostics.A_type_predicate_cannot_reference_element_0_in_a_binding_pattern, predicateVariableName);
            return true;
          } else if (name_15.kind === 165 || name_15.kind === 164) {
            if (checkIfTypePredicateVariableIsDeclaredInBindingPattern(name_15, predicateVariableNode, predicateVariableName)) {
              return true;
            }
          }
        }
      }
      function checkSignatureDeclaration(node) {
        if (node.kind === 150) {
          checkGrammarIndexSignature(node);
        } else if (node.kind === 153 || node.kind === 216 || node.kind === 154 || node.kind === 148 || node.kind === 145 || node.kind === 149) {
          checkGrammarFunctionLikeDeclaration(node);
        }
        checkTypeParameters(node.typeParameters);
        ts.forEach(node.parameters, checkParameter);
        if (node.type) {
          checkSourceElement(node.type);
        }
        if (produceDiagnostics) {
          checkCollisionWithArgumentsInGeneratedCode(node);
          if (compilerOptions.noImplicitAny && !node.type) {
            switch (node.kind) {
              case 149:
                error(node, ts.Diagnostics.Construct_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type);
                break;
              case 148:
                error(node, ts.Diagnostics.Call_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type);
                break;
            }
          }
          if (node.type) {
            if (languageVersion >= 2 && isSyntacticallyValidGenerator(node)) {
              var returnType = getTypeFromTypeNode(node.type);
              if (returnType === voidType) {
                error(node.type, ts.Diagnostics.A_generator_cannot_have_a_void_type_annotation);
              } else {
                var generatorElementType = getElementTypeOfIterableIterator(returnType) || anyType;
                var iterableIteratorInstantiation = createIterableIteratorType(generatorElementType);
                checkTypeAssignableTo(iterableIteratorInstantiation, returnType, node.type);
              }
            } else if (ts.isAsyncFunctionLike(node)) {
              checkAsyncFunctionReturnType(node);
            }
          }
        }
        checkSpecializedSignatureDeclaration(node);
      }
      function checkTypeForDuplicateIndexSignatures(node) {
        if (node.kind === 218) {
          var nodeSymbol = getSymbolOfNode(node);
          if (nodeSymbol.declarations.length > 0 && nodeSymbol.declarations[0] !== node) {
            return;
          }
        }
        var indexSymbol = getIndexSymbol(getSymbolOfNode(node));
        if (indexSymbol) {
          var seenNumericIndexer = false;
          var seenStringIndexer = false;
          for (var _i = 0,
              _a = indexSymbol.declarations; _i < _a.length; _i++) {
            var decl = _a[_i];
            var declaration = decl;
            if (declaration.parameters.length === 1 && declaration.parameters[0].type) {
              switch (declaration.parameters[0].type.kind) {
                case 130:
                  if (!seenStringIndexer) {
                    seenStringIndexer = true;
                  } else {
                    error(declaration, ts.Diagnostics.Duplicate_string_index_signature);
                  }
                  break;
                case 128:
                  if (!seenNumericIndexer) {
                    seenNumericIndexer = true;
                  } else {
                    error(declaration, ts.Diagnostics.Duplicate_number_index_signature);
                  }
                  break;
              }
            }
          }
        }
      }
      function checkPropertyDeclaration(node) {
        checkGrammarDecorators(node) || checkGrammarModifiers(node) || checkGrammarProperty(node) || checkGrammarComputedPropertyName(node.name);
        checkVariableLikeDeclaration(node);
      }
      function checkMethodDeclaration(node) {
        checkGrammarMethod(node) || checkGrammarComputedPropertyName(node.name);
        checkFunctionOrMethodDeclaration(node);
        if (node.flags & 128 && node.body) {
          error(node, ts.Diagnostics.Method_0_cannot_have_an_implementation_because_it_is_marked_abstract, ts.declarationNameToString(node.name));
        }
      }
      function checkConstructorDeclaration(node) {
        checkSignatureDeclaration(node);
        checkGrammarConstructorTypeParameters(node) || checkGrammarConstructorTypeAnnotation(node);
        checkSourceElement(node.body);
        var symbol = getSymbolOfNode(node);
        var firstDeclaration = ts.getDeclarationOfKind(symbol, node.kind);
        if (node === firstDeclaration) {
          checkFunctionOrConstructorSymbol(symbol);
        }
        if (ts.nodeIsMissing(node.body)) {
          return;
        }
        if (!produceDiagnostics) {
          return;
        }
        function markThisReferencesAsErrors(n) {
          if (n.kind === 97) {
            error(n, ts.Diagnostics.this_cannot_be_referenced_in_current_location);
          } else if (n.kind !== 176 && n.kind !== 216) {
            ts.forEachChild(n, markThisReferencesAsErrors);
          }
        }
        function isInstancePropertyWithInitializer(n) {
          return n.kind === 142 && !(n.flags & 64) && !!n.initializer;
        }
        var containingClassDecl = node.parent;
        if (ts.getClassExtendsHeritageClauseElement(containingClassDecl)) {
          var classExtendsNull = classDeclarationExtendsNull(containingClassDecl);
          var superCall = getSuperCallInConstructor(node);
          if (superCall) {
            if (classExtendsNull) {
              error(superCall, ts.Diagnostics.A_constructor_cannot_contain_a_super_call_when_its_class_extends_null);
            }
            var superCallShouldBeFirst = ts.forEach(node.parent.members, isInstancePropertyWithInitializer) || ts.forEach(node.parameters, function(p) {
              return p.flags & (8 | 16 | 32);
            });
            if (superCallShouldBeFirst) {
              var statements = node.body.statements;
              var superCallStatement = void 0;
              for (var _i = 0,
                  statements_2 = statements; _i < statements_2.length; _i++) {
                var statement = statements_2[_i];
                if (statement.kind === 198 && ts.isSuperCallExpression(statement.expression)) {
                  superCallStatement = statement;
                  break;
                }
                if (!ts.isPrologueDirective(statement)) {
                  break;
                }
              }
              if (!superCallStatement) {
                error(node, ts.Diagnostics.A_super_call_must_be_the_first_statement_in_the_constructor_when_a_class_contains_initialized_properties_or_has_parameter_properties);
              }
            }
          } else if (!classExtendsNull) {
            error(node, ts.Diagnostics.Constructors_for_derived_classes_must_contain_a_super_call);
          }
        }
      }
      function checkAccessorDeclaration(node) {
        if (produceDiagnostics) {
          checkGrammarFunctionLikeDeclaration(node) || checkGrammarAccessor(node) || checkGrammarComputedPropertyName(node.name);
          checkDecorators(node);
          checkSignatureDeclaration(node);
          if (node.kind === 146) {
            if (!ts.isInAmbientContext(node) && ts.nodeIsPresent(node.body) && (node.flags & 524288)) {
              if (node.flags & 1048576) {
                if (compilerOptions.noImplicitReturns) {
                  error(node.name, ts.Diagnostics.Not_all_code_paths_return_a_value);
                }
              } else {
                error(node.name, ts.Diagnostics.A_get_accessor_must_return_a_value);
              }
            }
          }
          if (node.name.kind === 137) {
            checkComputedPropertyName(node.name);
          }
          if (!ts.hasDynamicName(node)) {
            var otherKind = node.kind === 146 ? 147 : 146;
            var otherAccessor = ts.getDeclarationOfKind(node.symbol, otherKind);
            if (otherAccessor) {
              if (((node.flags & 56) !== (otherAccessor.flags & 56))) {
                error(node.name, ts.Diagnostics.Getter_and_setter_accessors_do_not_agree_in_visibility);
              }
              var currentAccessorType = getAnnotatedAccessorType(node);
              var otherAccessorType = getAnnotatedAccessorType(otherAccessor);
              if (currentAccessorType && otherAccessorType) {
                if (!isTypeIdenticalTo(currentAccessorType, otherAccessorType)) {
                  error(node, ts.Diagnostics.get_and_set_accessor_must_have_the_same_type);
                }
              }
            }
          }
          getTypeOfAccessors(getSymbolOfNode(node));
        }
        if (node.parent.kind !== 168) {
          checkSourceElement(node.body);
        } else {
          checkNodeDeferred(node);
        }
      }
      function checkAccessorDeferred(node) {
        checkSourceElement(node.body);
      }
      function checkMissingDeclaration(node) {
        checkDecorators(node);
      }
      function checkTypeArgumentConstraints(typeParameters, typeArgumentNodes) {
        var typeArguments;
        var mapper;
        var result = true;
        for (var i = 0; i < typeParameters.length; i++) {
          var constraint = getConstraintOfTypeParameter(typeParameters[i]);
          if (constraint) {
            if (!typeArguments) {
              typeArguments = ts.map(typeArgumentNodes, getTypeFromTypeNode);
              mapper = createTypeMapper(typeParameters, typeArguments);
            }
            var typeArgument = typeArguments[i];
            result = result && checkTypeAssignableTo(typeArgument, getTypeWithThisArgument(instantiateType(constraint, mapper), typeArgument), typeArgumentNodes[i], ts.Diagnostics.Type_0_does_not_satisfy_the_constraint_1);
          }
        }
        return result;
      }
      function checkTypeReferenceNode(node) {
        checkGrammarTypeArguments(node, node.typeArguments);
        var type = getTypeFromTypeReference(node);
        if (type !== unknownType && node.typeArguments) {
          ts.forEach(node.typeArguments, checkSourceElement);
          if (produceDiagnostics) {
            var symbol = getNodeLinks(node).resolvedSymbol;
            var typeParameters = symbol.flags & 524288 ? getSymbolLinks(symbol).typeParameters : type.target.localTypeParameters;
            checkTypeArgumentConstraints(typeParameters, node.typeArguments);
          }
        }
      }
      function checkTypeQuery(node) {
        getTypeFromTypeQueryNode(node);
      }
      function checkTypeLiteral(node) {
        ts.forEach(node.members, checkSourceElement);
        if (produceDiagnostics) {
          var type = getTypeFromTypeLiteralOrFunctionOrConstructorTypeNode(node);
          checkIndexConstraints(type);
          checkTypeForDuplicateIndexSignatures(node);
        }
      }
      function checkArrayType(node) {
        checkSourceElement(node.elementType);
      }
      function checkTupleType(node) {
        var hasErrorFromDisallowedTrailingComma = checkGrammarForDisallowedTrailingComma(node.elementTypes);
        if (!hasErrorFromDisallowedTrailingComma && node.elementTypes.length === 0) {
          grammarErrorOnNode(node, ts.Diagnostics.A_tuple_type_element_list_cannot_be_empty);
        }
        ts.forEach(node.elementTypes, checkSourceElement);
      }
      function checkUnionOrIntersectionType(node) {
        ts.forEach(node.types, checkSourceElement);
      }
      function isPrivateWithinAmbient(node) {
        return (node.flags & 16) && ts.isInAmbientContext(node);
      }
      function checkSpecializedSignatureDeclaration(signatureDeclarationNode) {
        if (!produceDiagnostics) {
          return;
        }
        var signature = getSignatureFromDeclaration(signatureDeclarationNode);
        if (!signature.hasStringLiterals) {
          return;
        }
        if (ts.nodeIsPresent(signatureDeclarationNode.body)) {
          error(signatureDeclarationNode, ts.Diagnostics.A_signature_with_an_implementation_cannot_use_a_string_literal_type);
          return;
        }
        var signaturesToCheck;
        if (!signatureDeclarationNode.name && signatureDeclarationNode.parent && signatureDeclarationNode.parent.kind === 218) {
          ts.Debug.assert(signatureDeclarationNode.kind === 148 || signatureDeclarationNode.kind === 149);
          var signatureKind = signatureDeclarationNode.kind === 148 ? 0 : 1;
          var containingSymbol = getSymbolOfNode(signatureDeclarationNode.parent);
          var containingType = getDeclaredTypeOfSymbol(containingSymbol);
          signaturesToCheck = getSignaturesOfType(containingType, signatureKind);
        } else {
          signaturesToCheck = getSignaturesOfSymbol(getSymbolOfNode(signatureDeclarationNode));
        }
        for (var _i = 0,
            signaturesToCheck_1 = signaturesToCheck; _i < signaturesToCheck_1.length; _i++) {
          var otherSignature = signaturesToCheck_1[_i];
          if (!otherSignature.hasStringLiterals && isSignatureAssignableTo(signature, otherSignature, false)) {
            return;
          }
        }
        error(signatureDeclarationNode, ts.Diagnostics.Specialized_overload_signature_is_not_assignable_to_any_non_specialized_signature);
      }
      function getEffectiveDeclarationFlags(n, flagsToCheck) {
        var flags = ts.getCombinedNodeFlags(n);
        if (n.parent.kind !== 218 && n.parent.kind !== 217 && n.parent.kind !== 189 && ts.isInAmbientContext(n)) {
          if (!(flags & 4)) {
            flags |= 2;
          }
          flags |= 4;
        }
        return flags & flagsToCheck;
      }
      function checkFunctionOrConstructorSymbol(symbol) {
        if (!produceDiagnostics) {
          return;
        }
        function getCanonicalOverload(overloads, implementation) {
          var implementationSharesContainerWithFirstOverload = implementation !== undefined && implementation.parent === overloads[0].parent;
          return implementationSharesContainerWithFirstOverload ? implementation : overloads[0];
        }
        function checkFlagAgreementBetweenOverloads(overloads, implementation, flagsToCheck, someOverloadFlags, allOverloadFlags) {
          var someButNotAllOverloadFlags = someOverloadFlags ^ allOverloadFlags;
          if (someButNotAllOverloadFlags !== 0) {
            var canonicalFlags_1 = getEffectiveDeclarationFlags(getCanonicalOverload(overloads, implementation), flagsToCheck);
            ts.forEach(overloads, function(o) {
              var deviation = getEffectiveDeclarationFlags(o, flagsToCheck) ^ canonicalFlags_1;
              if (deviation & 2) {
                error(o.name, ts.Diagnostics.Overload_signatures_must_all_be_exported_or_not_exported);
              } else if (deviation & 4) {
                error(o.name, ts.Diagnostics.Overload_signatures_must_all_be_ambient_or_non_ambient);
              } else if (deviation & (16 | 32)) {
                error(o.name, ts.Diagnostics.Overload_signatures_must_all_be_public_private_or_protected);
              } else if (deviation & 128) {
                error(o.name, ts.Diagnostics.Overload_signatures_must_all_be_abstract_or_not_abstract);
              }
            });
          }
        }
        function checkQuestionTokenAgreementBetweenOverloads(overloads, implementation, someHaveQuestionToken, allHaveQuestionToken) {
          if (someHaveQuestionToken !== allHaveQuestionToken) {
            var canonicalHasQuestionToken_1 = ts.hasQuestionToken(getCanonicalOverload(overloads, implementation));
            ts.forEach(overloads, function(o) {
              var deviation = ts.hasQuestionToken(o) !== canonicalHasQuestionToken_1;
              if (deviation) {
                error(o.name, ts.Diagnostics.Overload_signatures_must_all_be_optional_or_required);
              }
            });
          }
        }
        var flagsToCheck = 2 | 4 | 16 | 32 | 128;
        var someNodeFlags = 0;
        var allNodeFlags = flagsToCheck;
        var someHaveQuestionToken = false;
        var allHaveQuestionToken = true;
        var hasOverloads = false;
        var bodyDeclaration;
        var lastSeenNonAmbientDeclaration;
        var previousDeclaration;
        var declarations = symbol.declarations;
        var isConstructor = (symbol.flags & 16384) !== 0;
        function reportImplementationExpectedError(node) {
          if (node.name && ts.nodeIsMissing(node.name)) {
            return;
          }
          var seen = false;
          var subsequentNode = ts.forEachChild(node.parent, function(c) {
            if (seen) {
              return c;
            } else {
              seen = c === node;
            }
          });
          if (subsequentNode && subsequentNode.pos === node.end) {
            if (subsequentNode.kind === node.kind) {
              var errorNode_1 = subsequentNode.name || subsequentNode;
              if (node.name && subsequentNode.name && node.name.text === subsequentNode.name.text) {
                var reportError = (node.kind === 144 || node.kind === 143) && (node.flags & 64) !== (subsequentNode.flags & 64);
                if (reportError) {
                  var diagnostic = node.flags & 64 ? ts.Diagnostics.Function_overload_must_be_static : ts.Diagnostics.Function_overload_must_not_be_static;
                  error(errorNode_1, diagnostic);
                }
                return;
              } else if (ts.nodeIsPresent(subsequentNode.body)) {
                error(errorNode_1, ts.Diagnostics.Function_implementation_name_must_be_0, ts.declarationNameToString(node.name));
                return;
              }
            }
          }
          var errorNode = node.name || node;
          if (isConstructor) {
            error(errorNode, ts.Diagnostics.Constructor_implementation_is_missing);
          } else {
            if (node.flags & 128) {
              error(errorNode, ts.Diagnostics.All_declarations_of_an_abstract_method_must_be_consecutive);
            } else {
              error(errorNode, ts.Diagnostics.Function_implementation_is_missing_or_not_immediately_following_the_declaration);
            }
          }
        }
        var isExportSymbolInsideModule = symbol.parent && symbol.parent.flags & 1536;
        var duplicateFunctionDeclaration = false;
        var multipleConstructorImplementation = false;
        for (var _i = 0,
            declarations_4 = declarations; _i < declarations_4.length; _i++) {
          var current = declarations_4[_i];
          var node = current;
          var inAmbientContext = ts.isInAmbientContext(node);
          var inAmbientContextOrInterface = node.parent.kind === 218 || node.parent.kind === 156 || inAmbientContext;
          if (inAmbientContextOrInterface) {
            previousDeclaration = undefined;
          }
          if (node.kind === 216 || node.kind === 144 || node.kind === 143 || node.kind === 145) {
            var currentNodeFlags = getEffectiveDeclarationFlags(node, flagsToCheck);
            someNodeFlags |= currentNodeFlags;
            allNodeFlags &= currentNodeFlags;
            someHaveQuestionToken = someHaveQuestionToken || ts.hasQuestionToken(node);
            allHaveQuestionToken = allHaveQuestionToken && ts.hasQuestionToken(node);
            if (ts.nodeIsPresent(node.body) && bodyDeclaration) {
              if (isConstructor) {
                multipleConstructorImplementation = true;
              } else {
                duplicateFunctionDeclaration = true;
              }
            } else if (!isExportSymbolInsideModule && previousDeclaration && previousDeclaration.parent === node.parent && previousDeclaration.end !== node.pos) {
              reportImplementationExpectedError(previousDeclaration);
            }
            if (ts.nodeIsPresent(node.body)) {
              if (!bodyDeclaration) {
                bodyDeclaration = node;
              }
            } else {
              hasOverloads = true;
            }
            previousDeclaration = node;
            if (!inAmbientContextOrInterface) {
              lastSeenNonAmbientDeclaration = node;
            }
          }
        }
        if (multipleConstructorImplementation) {
          ts.forEach(declarations, function(declaration) {
            error(declaration, ts.Diagnostics.Multiple_constructor_implementations_are_not_allowed);
          });
        }
        if (duplicateFunctionDeclaration) {
          ts.forEach(declarations, function(declaration) {
            error(declaration.name, ts.Diagnostics.Duplicate_function_implementation);
          });
        }
        if (!isExportSymbolInsideModule && lastSeenNonAmbientDeclaration && !lastSeenNonAmbientDeclaration.body && !(lastSeenNonAmbientDeclaration.flags & 128)) {
          reportImplementationExpectedError(lastSeenNonAmbientDeclaration);
        }
        if (hasOverloads) {
          checkFlagAgreementBetweenOverloads(declarations, bodyDeclaration, flagsToCheck, someNodeFlags, allNodeFlags);
          checkQuestionTokenAgreementBetweenOverloads(declarations, bodyDeclaration, someHaveQuestionToken, allHaveQuestionToken);
          if (bodyDeclaration) {
            var signatures = getSignaturesOfSymbol(symbol);
            var bodySignature = getSignatureFromDeclaration(bodyDeclaration);
            if (!bodySignature.hasStringLiterals) {
              for (var _a = 0,
                  signatures_3 = signatures; _a < signatures_3.length; _a++) {
                var signature = signatures_3[_a];
                if (!signature.hasStringLiterals && !isImplementationCompatibleWithOverload(bodySignature, signature)) {
                  error(signature.declaration, ts.Diagnostics.Overload_signature_is_not_compatible_with_function_implementation);
                  break;
                }
              }
            }
          }
        }
      }
      function checkExportsOnMergedDeclarations(node) {
        if (!produceDiagnostics) {
          return;
        }
        var symbol = node.localSymbol;
        if (!symbol) {
          symbol = getSymbolOfNode(node);
          if (!(symbol.flags & 7340032)) {
            return;
          }
        }
        if (ts.getDeclarationOfKind(symbol, node.kind) !== node) {
          return;
        }
        var exportedDeclarationSpaces = 0;
        var nonExportedDeclarationSpaces = 0;
        var defaultExportedDeclarationSpaces = 0;
        for (var _i = 0,
            _a = symbol.declarations; _i < _a.length; _i++) {
          var d = _a[_i];
          var declarationSpaces = getDeclarationSpaces(d);
          var effectiveDeclarationFlags = getEffectiveDeclarationFlags(d, 2 | 512);
          if (effectiveDeclarationFlags & 2) {
            if (effectiveDeclarationFlags & 512) {
              defaultExportedDeclarationSpaces |= declarationSpaces;
            } else {
              exportedDeclarationSpaces |= declarationSpaces;
            }
          } else {
            nonExportedDeclarationSpaces |= declarationSpaces;
          }
        }
        var nonDefaultExportedDeclarationSpaces = exportedDeclarationSpaces | nonExportedDeclarationSpaces;
        var commonDeclarationSpacesForExportsAndLocals = exportedDeclarationSpaces & nonExportedDeclarationSpaces;
        var commonDeclarationSpacesForDefaultAndNonDefault = defaultExportedDeclarationSpaces & nonDefaultExportedDeclarationSpaces;
        if (commonDeclarationSpacesForExportsAndLocals || commonDeclarationSpacesForDefaultAndNonDefault) {
          for (var _b = 0,
              _c = symbol.declarations; _b < _c.length; _b++) {
            var d = _c[_b];
            var declarationSpaces = getDeclarationSpaces(d);
            if (declarationSpaces & commonDeclarationSpacesForDefaultAndNonDefault) {
              error(d.name, ts.Diagnostics.Merged_declaration_0_cannot_include_a_default_export_declaration_Consider_adding_a_separate_export_default_0_declaration_instead, ts.declarationNameToString(d.name));
            } else if (declarationSpaces & commonDeclarationSpacesForExportsAndLocals) {
              error(d.name, ts.Diagnostics.Individual_declarations_in_merged_declaration_0_must_be_all_exported_or_all_local, ts.declarationNameToString(d.name));
            }
          }
        }
        function getDeclarationSpaces(d) {
          switch (d.kind) {
            case 218:
              return 2097152;
            case 221:
              return ts.isAmbientModule(d) || ts.getModuleInstanceState(d) !== 0 ? 4194304 | 1048576 : 4194304;
            case 217:
            case 220:
              return 2097152 | 1048576;
            case 224:
              var result_2 = 0;
              var target = resolveAlias(getSymbolOfNode(d));
              ts.forEach(target.declarations, function(d) {
                result_2 |= getDeclarationSpaces(d);
              });
              return result_2;
            default:
              return 1048576;
          }
        }
      }
      function checkNonThenableType(type, location, message) {
        type = getWidenedType(type);
        if (!isTypeAny(type) && isTypeAssignableTo(type, getGlobalThenableType())) {
          if (location) {
            if (!message) {
              message = ts.Diagnostics.Operand_for_await_does_not_have_a_valid_callable_then_member;
            }
            error(location, message);
          }
          return unknownType;
        }
        return type;
      }
      function getPromisedType(promise) {
        if (promise.flags & 1) {
          return undefined;
        }
        if ((promise.flags & 4096) && promise.target === tryGetGlobalPromiseType()) {
          return promise.typeArguments[0];
        }
        var globalPromiseLikeType = getInstantiatedGlobalPromiseLikeType();
        if (globalPromiseLikeType === emptyObjectType || !isTypeAssignableTo(promise, globalPromiseLikeType)) {
          return undefined;
        }
        var thenFunction = getTypeOfPropertyOfType(promise, "then");
        if (thenFunction && (thenFunction.flags & 1)) {
          return undefined;
        }
        var thenSignatures = thenFunction ? getSignaturesOfType(thenFunction, 0) : emptyArray;
        if (thenSignatures.length === 0) {
          return undefined;
        }
        var onfulfilledParameterType = getUnionType(ts.map(thenSignatures, getTypeOfFirstParameterOfSignature));
        if (onfulfilledParameterType.flags & 1) {
          return undefined;
        }
        var onfulfilledParameterSignatures = getSignaturesOfType(onfulfilledParameterType, 0);
        if (onfulfilledParameterSignatures.length === 0) {
          return undefined;
        }
        var valueParameterType = getUnionType(ts.map(onfulfilledParameterSignatures, getTypeOfFirstParameterOfSignature));
        return valueParameterType;
      }
      function getTypeOfFirstParameterOfSignature(signature) {
        return getTypeAtPosition(signature, 0);
      }
      function getAwaitedType(type) {
        return checkAwaitedType(type, undefined, undefined);
      }
      function checkAwaitedType(type, location, message) {
        return checkAwaitedTypeWorker(type);
        function checkAwaitedTypeWorker(type) {
          if (type.flags & 16384) {
            var types = [];
            for (var _i = 0,
                _a = type.types; _i < _a.length; _i++) {
              var constituentType = _a[_i];
              types.push(checkAwaitedTypeWorker(constituentType));
            }
            return getUnionType(types);
          } else {
            var promisedType = getPromisedType(type);
            if (promisedType === undefined) {
              return checkNonThenableType(type, location, message);
            } else {
              if (type.id === promisedType.id || awaitedTypeStack.indexOf(promisedType.id) >= 0) {
                if (location) {
                  error(location, ts.Diagnostics._0_is_referenced_directly_or_indirectly_in_the_fulfillment_callback_of_its_own_then_method, symbolToString(type.symbol));
                }
                return unknownType;
              }
              awaitedTypeStack.push(type.id);
              var awaitedType = checkAwaitedTypeWorker(promisedType);
              awaitedTypeStack.pop();
              return awaitedType;
            }
          }
        }
      }
      function checkCorrectPromiseType(returnType, location) {
        if (returnType === unknownType) {
          return unknownType;
        }
        var globalPromiseType = getGlobalPromiseType();
        if (globalPromiseType === emptyGenericType || globalPromiseType === getTargetType(returnType)) {
          return checkAwaitedType(returnType, location, ts.Diagnostics.An_async_function_or_method_must_have_a_valid_awaitable_return_type);
        }
        error(location, ts.Diagnostics.The_return_type_of_an_async_function_or_method_must_be_the_global_Promise_T_type);
        return unknownType;
      }
      function checkAsyncFunctionReturnType(node) {
        if (compilerOptions.noCustomAsyncPromise && languageVersion >= 2) {
          var returnType = getTypeFromTypeNode(node.type);
          return checkCorrectPromiseType(returnType, node.type);
        }
        var globalPromiseConstructorLikeType = getGlobalPromiseConstructorLikeType();
        if (globalPromiseConstructorLikeType === emptyObjectType) {
          return unknownType;
        }
        var promiseType = getTypeFromTypeNode(node.type);
        if (promiseType === unknownType && compilerOptions.isolatedModules) {
          return unknownType;
        }
        var promiseConstructor = getNodeLinks(node.type).resolvedSymbol;
        if (!promiseConstructor || !symbolIsValue(promiseConstructor)) {
          var typeName = promiseConstructor ? symbolToString(promiseConstructor) : typeToString(promiseType);
          error(node, ts.Diagnostics.Type_0_is_not_a_valid_async_function_return_type, typeName);
          return unknownType;
        }
        checkReturnTypeAnnotationAsExpression(node);
        var promiseConstructorType = getTypeOfSymbol(promiseConstructor);
        if (!checkTypeAssignableTo(promiseConstructorType, globalPromiseConstructorLikeType, node, ts.Diagnostics.Type_0_is_not_a_valid_async_function_return_type)) {
          return unknownType;
        }
        var promiseName = ts.getEntityNameFromTypeNode(node.type);
        var promiseNameOrNamespaceRoot = getFirstIdentifier(promiseName);
        var rootSymbol = getSymbol(node.locals, promiseNameOrNamespaceRoot.text, 107455);
        if (rootSymbol) {
          error(rootSymbol.valueDeclaration, ts.Diagnostics.Duplicate_identifier_0_Compiler_uses_declaration_1_to_support_async_functions, promiseNameOrNamespaceRoot.text, getFullyQualifiedName(promiseConstructor));
          return unknownType;
        }
        return checkAwaitedType(promiseType, node, ts.Diagnostics.An_async_function_or_method_must_have_a_valid_awaitable_return_type);
      }
      function checkDecorator(node) {
        var signature = getResolvedSignature(node);
        var returnType = getReturnTypeOfSignature(signature);
        if (returnType.flags & 1) {
          return;
        }
        var expectedReturnType;
        var headMessage = getDiagnosticHeadMessageForDecoratorResolution(node);
        var errorInfo;
        switch (node.parent.kind) {
          case 217:
            var classSymbol = getSymbolOfNode(node.parent);
            var classConstructorType = getTypeOfSymbol(classSymbol);
            expectedReturnType = getUnionType([classConstructorType, voidType]);
            break;
          case 139:
            expectedReturnType = voidType;
            errorInfo = ts.chainDiagnosticMessages(errorInfo, ts.Diagnostics.The_return_type_of_a_parameter_decorator_function_must_be_either_void_or_any);
            break;
          case 142:
            expectedReturnType = voidType;
            errorInfo = ts.chainDiagnosticMessages(errorInfo, ts.Diagnostics.The_return_type_of_a_property_decorator_function_must_be_either_void_or_any);
            break;
          case 144:
          case 146:
          case 147:
            var methodType = getTypeOfNode(node.parent);
            var descriptorType = createTypedPropertyDescriptorType(methodType);
            expectedReturnType = getUnionType([descriptorType, voidType]);
            break;
        }
        checkTypeAssignableTo(returnType, expectedReturnType, node, headMessage, errorInfo);
      }
      function checkTypeNodeAsExpression(node) {
        if (node && node.kind === 152) {
          var root = getFirstIdentifier(node.typeName);
          var meaning = root.parent.kind === 152 ? 793056 : 1536;
          var rootSymbol = resolveName(root, root.text, meaning | 8388608, undefined, undefined);
          if (rootSymbol && rootSymbol.flags & 8388608) {
            var aliasTarget = resolveAlias(rootSymbol);
            if (aliasTarget.flags & 107455 && !isConstEnumOrConstEnumOnlyModule(resolveAlias(rootSymbol))) {
              markAliasSymbolAsReferenced(rootSymbol);
            }
          }
        }
      }
      function checkTypeAnnotationAsExpression(node) {
        checkTypeNodeAsExpression(node.type);
      }
      function checkReturnTypeAnnotationAsExpression(node) {
        checkTypeNodeAsExpression(node.type);
      }
      function checkParameterTypeAnnotationsAsExpressions(node) {
        for (var _i = 0,
            _a = node.parameters; _i < _a.length; _i++) {
          var parameter = _a[_i];
          checkTypeAnnotationAsExpression(parameter);
        }
      }
      function checkDecorators(node) {
        if (!node.decorators) {
          return;
        }
        if (!ts.nodeCanBeDecorated(node)) {
          return;
        }
        if (!compilerOptions.experimentalDecorators) {
          error(node, ts.Diagnostics.Experimental_support_for_decorators_is_a_feature_that_is_subject_to_change_in_a_future_release_Set_the_experimentalDecorators_option_to_remove_this_warning);
        }
        if (compilerOptions.emitDecoratorMetadata) {
          switch (node.kind) {
            case 217:
              var constructor = ts.getFirstConstructorWithBody(node);
              if (constructor) {
                checkParameterTypeAnnotationsAsExpressions(constructor);
              }
              break;
            case 144:
            case 146:
            case 147:
              checkParameterTypeAnnotationsAsExpressions(node);
              checkReturnTypeAnnotationAsExpression(node);
              break;
            case 142:
            case 139:
              checkTypeAnnotationAsExpression(node);
              break;
          }
        }
        ts.forEach(node.decorators, checkDecorator);
      }
      function checkFunctionDeclaration(node) {
        if (produceDiagnostics) {
          checkFunctionOrMethodDeclaration(node) || checkGrammarForGenerator(node);
          checkCollisionWithCapturedSuperVariable(node, node.name);
          checkCollisionWithCapturedThisVariable(node, node.name);
          checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
          checkCollisionWithGlobalPromiseInGeneratedCode(node, node.name);
        }
      }
      function checkFunctionOrMethodDeclaration(node) {
        checkDecorators(node);
        checkSignatureDeclaration(node);
        var isAsync = ts.isAsyncFunctionLike(node);
        if (node.name && node.name.kind === 137) {
          checkComputedPropertyName(node.name);
        }
        if (!ts.hasDynamicName(node)) {
          var symbol = getSymbolOfNode(node);
          var localSymbol = node.localSymbol || symbol;
          var firstDeclaration = ts.forEach(localSymbol.declarations, function(declaration) {
            return declaration.kind === node.kind && !ts.isSourceFileJavaScript(ts.getSourceFileOfNode(declaration)) ? declaration : undefined;
          });
          if (node === firstDeclaration) {
            checkFunctionOrConstructorSymbol(localSymbol);
          }
          if (symbol.parent) {
            if (ts.getDeclarationOfKind(symbol, node.kind) === node) {
              checkFunctionOrConstructorSymbol(symbol);
            }
          }
        }
        checkSourceElement(node.body);
        if (!node.asteriskToken) {
          var returnOrPromisedType = node.type && (isAsync ? checkAsyncFunctionReturnType(node) : getTypeFromTypeNode(node.type));
          checkAllCodePathsInNonVoidFunctionReturnOrThrow(node, returnOrPromisedType);
        }
        if (produceDiagnostics && !node.type) {
          if (compilerOptions.noImplicitAny && ts.nodeIsMissing(node.body) && !isPrivateWithinAmbient(node)) {
            reportImplicitAnyError(node, anyType);
          }
          if (node.asteriskToken && ts.nodeIsPresent(node.body)) {
            getReturnTypeOfSignature(getSignatureFromDeclaration(node));
          }
        }
      }
      function checkBlock(node) {
        if (node.kind === 195) {
          checkGrammarStatementInAmbientContext(node);
        }
        ts.forEach(node.statements, checkSourceElement);
      }
      function checkCollisionWithArgumentsInGeneratedCode(node) {
        if (!ts.hasRestParameter(node) || ts.isInAmbientContext(node) || ts.nodeIsMissing(node.body)) {
          return;
        }
        ts.forEach(node.parameters, function(p) {
          if (p.name && !ts.isBindingPattern(p.name) && p.name.text === argumentsSymbol.name) {
            error(p, ts.Diagnostics.Duplicate_identifier_arguments_Compiler_uses_arguments_to_initialize_rest_parameters);
          }
        });
      }
      function needCollisionCheckForIdentifier(node, identifier, name) {
        if (!(identifier && identifier.text === name)) {
          return false;
        }
        if (node.kind === 142 || node.kind === 141 || node.kind === 144 || node.kind === 143 || node.kind === 146 || node.kind === 147) {
          return false;
        }
        if (ts.isInAmbientContext(node)) {
          return false;
        }
        var root = ts.getRootDeclaration(node);
        if (root.kind === 139 && ts.nodeIsMissing(root.parent.body)) {
          return false;
        }
        return true;
      }
      function checkCollisionWithCapturedThisVariable(node, name) {
        if (needCollisionCheckForIdentifier(node, name, "_this")) {
          potentialThisCollisions.push(node);
        }
      }
      function checkIfThisIsCapturedInEnclosingScope(node) {
        var current = node;
        while (current) {
          if (getNodeCheckFlags(current) & 4) {
            var isDeclaration_1 = node.kind !== 69;
            if (isDeclaration_1) {
              error(node.name, ts.Diagnostics.Duplicate_identifier_this_Compiler_uses_variable_declaration_this_to_capture_this_reference);
            } else {
              error(node, ts.Diagnostics.Expression_resolves_to_variable_declaration_this_that_compiler_uses_to_capture_this_reference);
            }
            return;
          }
          current = current.parent;
        }
      }
      function checkCollisionWithCapturedSuperVariable(node, name) {
        if (!needCollisionCheckForIdentifier(node, name, "_super")) {
          return;
        }
        var enclosingClass = ts.getContainingClass(node);
        if (!enclosingClass || ts.isInAmbientContext(enclosingClass)) {
          return;
        }
        if (ts.getClassExtendsHeritageClauseElement(enclosingClass)) {
          var isDeclaration_2 = node.kind !== 69;
          if (isDeclaration_2) {
            error(node, ts.Diagnostics.Duplicate_identifier_super_Compiler_uses_super_to_capture_base_class_reference);
          } else {
            error(node, ts.Diagnostics.Expression_resolves_to_super_that_compiler_uses_to_capture_base_class_reference);
          }
        }
      }
      function checkCollisionWithRequireExportsInGeneratedCode(node, name) {
        if (!needCollisionCheckForIdentifier(node, name, "require") && !needCollisionCheckForIdentifier(node, name, "exports")) {
          return;
        }
        if (node.kind === 221 && ts.getModuleInstanceState(node) !== 1) {
          return;
        }
        var parent = getDeclarationContainer(node);
        if (parent.kind === 251 && ts.isExternalOrCommonJsModule(parent)) {
          error(name, ts.Diagnostics.Duplicate_identifier_0_Compiler_reserves_name_1_in_top_level_scope_of_a_module, ts.declarationNameToString(name), ts.declarationNameToString(name));
        }
      }
      function checkCollisionWithGlobalPromiseInGeneratedCode(node, name) {
        if (!compilerOptions.noCustomAsyncPromise) {
          return;
        }
        if (!needCollisionCheckForIdentifier(node, name, "Promise")) {
          return;
        }
        if (node.kind === 221 && ts.getModuleInstanceState(node) !== 1) {
          return;
        }
        var parent = getDeclarationContainer(node);
        if (parent.kind === 251 && ts.isExternalOrCommonJsModule(parent) && parent.flags & 33554432) {
          error(name, ts.Diagnostics.Duplicate_identifier_0_Compiler_reserves_name_1_in_top_level_scope_of_a_module_containing_async_functions, ts.declarationNameToString(name), ts.declarationNameToString(name));
        }
      }
      function checkVarDeclaredNamesNotShadowed(node) {
        if ((ts.getCombinedNodeFlags(node) & 24576) !== 0 || ts.isParameterDeclaration(node)) {
          return;
        }
        if (node.kind === 214 && !node.initializer) {
          return;
        }
        var symbol = getSymbolOfNode(node);
        if (symbol.flags & 1) {
          var localDeclarationSymbol = resolveName(node, node.name.text, 3, undefined, undefined);
          if (localDeclarationSymbol && localDeclarationSymbol !== symbol && localDeclarationSymbol.flags & 2) {
            if (getDeclarationFlagsFromSymbol(localDeclarationSymbol) & 24576) {
              var varDeclList = ts.getAncestor(localDeclarationSymbol.valueDeclaration, 215);
              var container = varDeclList.parent.kind === 196 && varDeclList.parent.parent ? varDeclList.parent.parent : undefined;
              var namesShareScope = container && (container.kind === 195 && ts.isFunctionLike(container.parent) || container.kind === 222 || container.kind === 221 || container.kind === 251);
              if (!namesShareScope) {
                var name_16 = symbolToString(localDeclarationSymbol);
                error(node, ts.Diagnostics.Cannot_initialize_outer_scoped_variable_0_in_the_same_scope_as_block_scoped_declaration_1, name_16, name_16);
              }
            }
          }
        }
      }
      function checkParameterInitializer(node) {
        if (ts.getRootDeclaration(node).kind !== 139) {
          return;
        }
        var func = ts.getContainingFunction(node);
        visit(node.initializer);
        function visit(n) {
          if (n.kind === 69) {
            var referencedSymbol = getNodeLinks(n).resolvedSymbol;
            if (referencedSymbol && referencedSymbol !== unknownSymbol && getSymbol(func.locals, referencedSymbol.name, 107455) === referencedSymbol) {
              if (referencedSymbol.valueDeclaration.kind === 139) {
                if (referencedSymbol.valueDeclaration === node) {
                  error(n, ts.Diagnostics.Parameter_0_cannot_be_referenced_in_its_initializer, ts.declarationNameToString(node.name));
                  return;
                }
                if (referencedSymbol.valueDeclaration.pos < node.pos) {
                  return;
                }
              }
              error(n, ts.Diagnostics.Initializer_of_parameter_0_cannot_reference_identifier_1_declared_after_it, ts.declarationNameToString(node.name), ts.declarationNameToString(n));
            }
          } else {
            ts.forEachChild(n, visit);
          }
        }
      }
      function checkVariableLikeDeclaration(node) {
        checkDecorators(node);
        checkSourceElement(node.type);
        if (node.name.kind === 137) {
          checkComputedPropertyName(node.name);
          if (node.initializer) {
            checkExpressionCached(node.initializer);
          }
        }
        if (node.kind === 166) {
          if (node.propertyName && node.propertyName.kind === 137) {
            checkComputedPropertyName(node.propertyName);
          }
        }
        if (ts.isBindingPattern(node.name)) {
          ts.forEach(node.name.elements, checkSourceElement);
        }
        if (node.initializer && ts.getRootDeclaration(node).kind === 139 && ts.nodeIsMissing(ts.getContainingFunction(node).body)) {
          error(node, ts.Diagnostics.A_parameter_initializer_is_only_allowed_in_a_function_or_constructor_implementation);
          return;
        }
        if (ts.isBindingPattern(node.name)) {
          if (node.initializer && node.parent.parent.kind !== 203) {
            checkTypeAssignableTo(checkExpressionCached(node.initializer), getWidenedTypeForVariableLikeDeclaration(node), node, undefined);
            checkParameterInitializer(node);
          }
          return;
        }
        var symbol = getSymbolOfNode(node);
        var type = getTypeOfVariableOrParameterOrProperty(symbol);
        if (node === symbol.valueDeclaration) {
          if (node.initializer && node.parent.parent.kind !== 203) {
            checkTypeAssignableTo(checkExpressionCached(node.initializer), type, node, undefined);
            checkParameterInitializer(node);
          }
        } else {
          var declarationType = getWidenedTypeForVariableLikeDeclaration(node);
          if (type !== unknownType && declarationType !== unknownType && !isTypeIdenticalTo(type, declarationType)) {
            error(node.name, ts.Diagnostics.Subsequent_variable_declarations_must_have_the_same_type_Variable_0_must_be_of_type_1_but_here_has_type_2, ts.declarationNameToString(node.name), typeToString(type), typeToString(declarationType));
          }
          if (node.initializer) {
            checkTypeAssignableTo(checkExpressionCached(node.initializer), declarationType, node, undefined);
          }
        }
        if (node.kind !== 142 && node.kind !== 141) {
          checkExportsOnMergedDeclarations(node);
          if (node.kind === 214 || node.kind === 166) {
            checkVarDeclaredNamesNotShadowed(node);
          }
          checkCollisionWithCapturedSuperVariable(node, node.name);
          checkCollisionWithCapturedThisVariable(node, node.name);
          checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
          checkCollisionWithGlobalPromiseInGeneratedCode(node, node.name);
        }
      }
      function checkVariableDeclaration(node) {
        checkGrammarVariableDeclaration(node);
        return checkVariableLikeDeclaration(node);
      }
      function checkBindingElement(node) {
        checkGrammarBindingElement(node);
        return checkVariableLikeDeclaration(node);
      }
      function checkVariableStatement(node) {
        checkGrammarDecorators(node) || checkGrammarModifiers(node) || checkGrammarVariableDeclarationList(node.declarationList) || checkGrammarForDisallowedLetOrConstStatement(node);
        ts.forEach(node.declarationList.declarations, checkSourceElement);
      }
      function checkGrammarDisallowedModifiersOnObjectLiteralExpressionMethod(node) {
        if (node.modifiers && node.parent.kind === 168) {
          if (ts.isAsyncFunctionLike(node)) {
            if (node.modifiers.length > 1) {
              return grammarErrorOnFirstToken(node, ts.Diagnostics.Modifiers_cannot_appear_here);
            }
          } else {
            return grammarErrorOnFirstToken(node, ts.Diagnostics.Modifiers_cannot_appear_here);
          }
        }
      }
      function checkExpressionStatement(node) {
        checkGrammarStatementInAmbientContext(node);
        checkExpression(node.expression);
      }
      function checkIfStatement(node) {
        checkGrammarStatementInAmbientContext(node);
        checkExpression(node.expression);
        checkSourceElement(node.thenStatement);
        if (node.thenStatement.kind === 197) {
          error(node.thenStatement, ts.Diagnostics.The_body_of_an_if_statement_cannot_be_the_empty_statement);
        }
        checkSourceElement(node.elseStatement);
      }
      function checkDoStatement(node) {
        checkGrammarStatementInAmbientContext(node);
        checkSourceElement(node.statement);
        checkExpression(node.expression);
      }
      function checkWhileStatement(node) {
        checkGrammarStatementInAmbientContext(node);
        checkExpression(node.expression);
        checkSourceElement(node.statement);
      }
      function checkForStatement(node) {
        if (!checkGrammarStatementInAmbientContext(node)) {
          if (node.initializer && node.initializer.kind === 215) {
            checkGrammarVariableDeclarationList(node.initializer);
          }
        }
        if (node.initializer) {
          if (node.initializer.kind === 215) {
            ts.forEach(node.initializer.declarations, checkVariableDeclaration);
          } else {
            checkExpression(node.initializer);
          }
        }
        if (node.condition)
          checkExpression(node.condition);
        if (node.incrementor)
          checkExpression(node.incrementor);
        checkSourceElement(node.statement);
      }
      function checkForOfStatement(node) {
        checkGrammarForInOrForOfStatement(node);
        if (node.initializer.kind === 215) {
          checkForInOrForOfVariableDeclaration(node);
        } else {
          var varExpr = node.initializer;
          var iteratedType = checkRightHandSideOfForOf(node.expression);
          if (varExpr.kind === 167 || varExpr.kind === 168) {
            checkDestructuringAssignment(varExpr, iteratedType || unknownType);
          } else {
            var leftType = checkExpression(varExpr);
            checkReferenceExpression(varExpr, ts.Diagnostics.Invalid_left_hand_side_in_for_of_statement, ts.Diagnostics.The_left_hand_side_of_a_for_of_statement_cannot_be_a_previously_defined_constant);
            if (iteratedType) {
              checkTypeAssignableTo(iteratedType, leftType, varExpr, undefined);
            }
          }
        }
        checkSourceElement(node.statement);
      }
      function checkForInStatement(node) {
        checkGrammarForInOrForOfStatement(node);
        if (node.initializer.kind === 215) {
          var variable = node.initializer.declarations[0];
          if (variable && ts.isBindingPattern(variable.name)) {
            error(variable.name, ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_cannot_be_a_destructuring_pattern);
          }
          checkForInOrForOfVariableDeclaration(node);
        } else {
          var varExpr = node.initializer;
          var leftType = checkExpression(varExpr);
          if (varExpr.kind === 167 || varExpr.kind === 168) {
            error(varExpr, ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_cannot_be_a_destructuring_pattern);
          } else if (!isTypeAnyOrAllConstituentTypesHaveKind(leftType, 258)) {
            error(varExpr, ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_must_be_of_type_string_or_any);
          } else {
            checkReferenceExpression(varExpr, ts.Diagnostics.Invalid_left_hand_side_in_for_in_statement, ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_cannot_be_a_previously_defined_constant);
          }
        }
        var rightType = checkExpression(node.expression);
        if (!isTypeAnyOrAllConstituentTypesHaveKind(rightType, 80896 | 512)) {
          error(node.expression, ts.Diagnostics.The_right_hand_side_of_a_for_in_statement_must_be_of_type_any_an_object_type_or_a_type_parameter);
        }
        checkSourceElement(node.statement);
      }
      function checkForInOrForOfVariableDeclaration(iterationStatement) {
        var variableDeclarationList = iterationStatement.initializer;
        if (variableDeclarationList.declarations.length >= 1) {
          var decl = variableDeclarationList.declarations[0];
          checkVariableDeclaration(decl);
        }
      }
      function checkRightHandSideOfForOf(rhsExpression) {
        var expressionType = getTypeOfExpression(rhsExpression);
        return checkIteratedTypeOrElementType(expressionType, rhsExpression, true);
      }
      function checkIteratedTypeOrElementType(inputType, errorNode, allowStringInput) {
        if (isTypeAny(inputType)) {
          return inputType;
        }
        if (languageVersion >= 2) {
          return checkElementTypeOfIterable(inputType, errorNode);
        }
        if (allowStringInput) {
          return checkElementTypeOfArrayOrString(inputType, errorNode);
        }
        if (isArrayLikeType(inputType)) {
          var indexType = getIndexTypeOfType(inputType, 1);
          if (indexType) {
            return indexType;
          }
        }
        error(errorNode, ts.Diagnostics.Type_0_is_not_an_array_type, typeToString(inputType));
        return unknownType;
      }
      function checkElementTypeOfIterable(iterable, errorNode) {
        var elementType = getElementTypeOfIterable(iterable, errorNode);
        if (errorNode && elementType) {
          checkTypeAssignableTo(iterable, createIterableType(elementType), errorNode);
        }
        return elementType || anyType;
      }
      function getElementTypeOfIterable(type, errorNode) {
        if (isTypeAny(type)) {
          return undefined;
        }
        var typeAsIterable = type;
        if (!typeAsIterable.iterableElementType) {
          if ((type.flags & 4096) && type.target === globalIterableType) {
            typeAsIterable.iterableElementType = type.typeArguments[0];
          } else {
            var iteratorFunction = getTypeOfPropertyOfType(type, ts.getPropertyNameForKnownSymbolName("iterator"));
            if (isTypeAny(iteratorFunction)) {
              return undefined;
            }
            var iteratorFunctionSignatures = iteratorFunction ? getSignaturesOfType(iteratorFunction, 0) : emptyArray;
            if (iteratorFunctionSignatures.length === 0) {
              if (errorNode) {
                error(errorNode, ts.Diagnostics.Type_must_have_a_Symbol_iterator_method_that_returns_an_iterator);
              }
              return undefined;
            }
            typeAsIterable.iterableElementType = getElementTypeOfIterator(getUnionType(ts.map(iteratorFunctionSignatures, getReturnTypeOfSignature)), errorNode);
          }
        }
        return typeAsIterable.iterableElementType;
      }
      function getElementTypeOfIterator(type, errorNode) {
        if (isTypeAny(type)) {
          return undefined;
        }
        var typeAsIterator = type;
        if (!typeAsIterator.iteratorElementType) {
          if ((type.flags & 4096) && type.target === globalIteratorType) {
            typeAsIterator.iteratorElementType = type.typeArguments[0];
          } else {
            var iteratorNextFunction = getTypeOfPropertyOfType(type, "next");
            if (isTypeAny(iteratorNextFunction)) {
              return undefined;
            }
            var iteratorNextFunctionSignatures = iteratorNextFunction ? getSignaturesOfType(iteratorNextFunction, 0) : emptyArray;
            if (iteratorNextFunctionSignatures.length === 0) {
              if (errorNode) {
                error(errorNode, ts.Diagnostics.An_iterator_must_have_a_next_method);
              }
              return undefined;
            }
            var iteratorNextResult = getUnionType(ts.map(iteratorNextFunctionSignatures, getReturnTypeOfSignature));
            if (isTypeAny(iteratorNextResult)) {
              return undefined;
            }
            var iteratorNextValue = getTypeOfPropertyOfType(iteratorNextResult, "value");
            if (!iteratorNextValue) {
              if (errorNode) {
                error(errorNode, ts.Diagnostics.The_type_returned_by_the_next_method_of_an_iterator_must_have_a_value_property);
              }
              return undefined;
            }
            typeAsIterator.iteratorElementType = iteratorNextValue;
          }
        }
        return typeAsIterator.iteratorElementType;
      }
      function getElementTypeOfIterableIterator(type) {
        if (isTypeAny(type)) {
          return undefined;
        }
        if ((type.flags & 4096) && type.target === globalIterableIteratorType) {
          return type.typeArguments[0];
        }
        return getElementTypeOfIterable(type, undefined) || getElementTypeOfIterator(type, undefined);
      }
      function checkElementTypeOfArrayOrString(arrayOrStringType, errorNode) {
        ts.Debug.assert(languageVersion < 2);
        var arrayType = arrayOrStringType;
        if (arrayOrStringType.flags & 16384) {
          arrayType = getUnionType(ts.filter(arrayOrStringType.types, function(t) {
            return !(t.flags & 258);
          }));
        } else if (arrayOrStringType.flags & 258) {
          arrayType = emptyUnionType;
        }
        var hasStringConstituent = arrayOrStringType !== arrayType;
        var reportedError = false;
        if (hasStringConstituent) {
          if (languageVersion < 1) {
            error(errorNode, ts.Diagnostics.Using_a_string_in_a_for_of_statement_is_only_supported_in_ECMAScript_5_and_higher);
            reportedError = true;
          }
          if (arrayType === emptyObjectType) {
            return stringType;
          }
        }
        if (!isArrayLikeType(arrayType)) {
          if (!reportedError) {
            var diagnostic = hasStringConstituent ? ts.Diagnostics.Type_0_is_not_an_array_type : ts.Diagnostics.Type_0_is_not_an_array_type_or_a_string_type;
            error(errorNode, diagnostic, typeToString(arrayType));
          }
          return hasStringConstituent ? stringType : unknownType;
        }
        var arrayElementType = getIndexTypeOfType(arrayType, 1) || unknownType;
        if (hasStringConstituent) {
          if (arrayElementType.flags & 258) {
            return stringType;
          }
          return getUnionType([arrayElementType, stringType]);
        }
        return arrayElementType;
      }
      function checkBreakOrContinueStatement(node) {
        checkGrammarStatementInAmbientContext(node) || checkGrammarBreakOrContinueStatement(node);
      }
      function isGetAccessorWithAnnotatatedSetAccessor(node) {
        return !!(node.kind === 146 && ts.getSetAccessorTypeAnnotationNode(ts.getDeclarationOfKind(node.symbol, 147)));
      }
      function checkReturnStatement(node) {
        if (!checkGrammarStatementInAmbientContext(node)) {
          var functionBlock = ts.getContainingFunction(node);
          if (!functionBlock) {
            grammarErrorOnFirstToken(node, ts.Diagnostics.A_return_statement_can_only_be_used_within_a_function_body);
          }
        }
        if (node.expression) {
          var func = ts.getContainingFunction(node);
          if (func) {
            var signature = getSignatureFromDeclaration(func);
            var returnType = getReturnTypeOfSignature(signature);
            var exprType = checkExpressionCached(node.expression);
            if (func.asteriskToken) {
              return;
            }
            if (func.kind === 147) {
              error(node.expression, ts.Diagnostics.Setters_cannot_return_a_value);
            } else if (func.kind === 145) {
              if (!checkTypeAssignableTo(exprType, returnType, node.expression)) {
                error(node.expression, ts.Diagnostics.Return_type_of_constructor_signature_must_be_assignable_to_the_instance_type_of_the_class);
              }
            } else if (func.type || isGetAccessorWithAnnotatatedSetAccessor(func)) {
              if (ts.isAsyncFunctionLike(func)) {
                var promisedType = getPromisedType(returnType);
                var awaitedType = checkAwaitedType(exprType, node.expression, ts.Diagnostics.Return_expression_in_async_function_does_not_have_a_valid_callable_then_member);
                if (promisedType) {
                  checkTypeAssignableTo(awaitedType, promisedType, node.expression);
                }
              } else {
                checkTypeAssignableTo(exprType, returnType, node.expression);
              }
            }
          }
        }
      }
      function checkWithStatement(node) {
        if (!checkGrammarStatementInAmbientContext(node)) {
          if (node.parserContextFlags & 8) {
            grammarErrorOnFirstToken(node, ts.Diagnostics.with_statements_are_not_allowed_in_an_async_function_block);
          }
        }
        checkExpression(node.expression);
        error(node.expression, ts.Diagnostics.All_symbols_within_a_with_block_will_be_resolved_to_any);
      }
      function checkSwitchStatement(node) {
        checkGrammarStatementInAmbientContext(node);
        var firstDefaultClause;
        var hasDuplicateDefaultClause = false;
        var expressionType = checkExpression(node.expression);
        var expressionTypeIsStringLike = someConstituentTypeHasKind(expressionType, 258);
        ts.forEach(node.caseBlock.clauses, function(clause) {
          if (clause.kind === 245 && !hasDuplicateDefaultClause) {
            if (firstDefaultClause === undefined) {
              firstDefaultClause = clause;
            } else {
              var sourceFile = ts.getSourceFileOfNode(node);
              var start = ts.skipTrivia(sourceFile.text, clause.pos);
              var end = clause.statements.length > 0 ? clause.statements[0].pos : clause.end;
              grammarErrorAtPos(sourceFile, start, end - start, ts.Diagnostics.A_default_clause_cannot_appear_more_than_once_in_a_switch_statement);
              hasDuplicateDefaultClause = true;
            }
          }
          if (produceDiagnostics && clause.kind === 244) {
            var caseClause = clause;
            var caseType = checkExpression(caseClause.expression);
            var expressionTypeIsAssignableToCaseType = (expressionTypeIsStringLike && someConstituentTypeHasKind(caseType, 258)) || isTypeAssignableTo(expressionType, caseType);
            if (!expressionTypeIsAssignableToCaseType) {
              checkTypeAssignableTo(caseType, expressionType, caseClause.expression, undefined);
            }
          }
          ts.forEach(clause.statements, checkSourceElement);
        });
      }
      function checkLabeledStatement(node) {
        if (!checkGrammarStatementInAmbientContext(node)) {
          var current = node.parent;
          while (current) {
            if (ts.isFunctionLike(current)) {
              break;
            }
            if (current.kind === 210 && current.label.text === node.label.text) {
              var sourceFile = ts.getSourceFileOfNode(node);
              grammarErrorOnNode(node.label, ts.Diagnostics.Duplicate_label_0, ts.getTextOfNodeFromSourceText(sourceFile.text, node.label));
              break;
            }
            current = current.parent;
          }
        }
        checkSourceElement(node.statement);
      }
      function checkThrowStatement(node) {
        if (!checkGrammarStatementInAmbientContext(node)) {
          if (node.expression === undefined) {
            grammarErrorAfterFirstToken(node, ts.Diagnostics.Line_break_not_permitted_here);
          }
        }
        if (node.expression) {
          checkExpression(node.expression);
        }
      }
      function checkTryStatement(node) {
        checkGrammarStatementInAmbientContext(node);
        checkBlock(node.tryBlock);
        var catchClause = node.catchClause;
        if (catchClause) {
          if (catchClause.variableDeclaration) {
            if (catchClause.variableDeclaration.name.kind !== 69) {
              grammarErrorOnFirstToken(catchClause.variableDeclaration.name, ts.Diagnostics.Catch_clause_variable_name_must_be_an_identifier);
            } else if (catchClause.variableDeclaration.type) {
              grammarErrorOnFirstToken(catchClause.variableDeclaration.type, ts.Diagnostics.Catch_clause_variable_cannot_have_a_type_annotation);
            } else if (catchClause.variableDeclaration.initializer) {
              grammarErrorOnFirstToken(catchClause.variableDeclaration.initializer, ts.Diagnostics.Catch_clause_variable_cannot_have_an_initializer);
            } else {
              var identifierName = catchClause.variableDeclaration.name.text;
              var locals = catchClause.block.locals;
              if (locals && ts.hasProperty(locals, identifierName)) {
                var localSymbol = locals[identifierName];
                if (localSymbol && (localSymbol.flags & 2) !== 0) {
                  grammarErrorOnNode(localSymbol.valueDeclaration, ts.Diagnostics.Cannot_redeclare_identifier_0_in_catch_clause, identifierName);
                }
              }
            }
          }
          checkBlock(catchClause.block);
        }
        if (node.finallyBlock) {
          checkBlock(node.finallyBlock);
        }
      }
      function checkIndexConstraints(type) {
        var declaredNumberIndexer = getIndexDeclarationOfSymbol(type.symbol, 1);
        var declaredStringIndexer = getIndexDeclarationOfSymbol(type.symbol, 0);
        var stringIndexType = getIndexTypeOfType(type, 0);
        var numberIndexType = getIndexTypeOfType(type, 1);
        if (stringIndexType || numberIndexType) {
          ts.forEach(getPropertiesOfObjectType(type), function(prop) {
            var propType = getTypeOfSymbol(prop);
            checkIndexConstraintForProperty(prop, propType, type, declaredStringIndexer, stringIndexType, 0);
            checkIndexConstraintForProperty(prop, propType, type, declaredNumberIndexer, numberIndexType, 1);
          });
          if (type.flags & 1024 && ts.isClassLike(type.symbol.valueDeclaration)) {
            var classDeclaration = type.symbol.valueDeclaration;
            for (var _i = 0,
                _a = classDeclaration.members; _i < _a.length; _i++) {
              var member = _a[_i];
              if (!(member.flags & 64) && ts.hasDynamicName(member)) {
                var propType = getTypeOfSymbol(member.symbol);
                checkIndexConstraintForProperty(member.symbol, propType, type, declaredStringIndexer, stringIndexType, 0);
                checkIndexConstraintForProperty(member.symbol, propType, type, declaredNumberIndexer, numberIndexType, 1);
              }
            }
          }
        }
        var errorNode;
        if (stringIndexType && numberIndexType) {
          errorNode = declaredNumberIndexer || declaredStringIndexer;
          if (!errorNode && (type.flags & 2048)) {
            var someBaseTypeHasBothIndexers = ts.forEach(getBaseTypes(type), function(base) {
              return getIndexTypeOfType(base, 0) && getIndexTypeOfType(base, 1);
            });
            errorNode = someBaseTypeHasBothIndexers ? undefined : type.symbol.declarations[0];
          }
        }
        if (errorNode && !isTypeAssignableTo(numberIndexType, stringIndexType)) {
          error(errorNode, ts.Diagnostics.Numeric_index_type_0_is_not_assignable_to_string_index_type_1, typeToString(numberIndexType), typeToString(stringIndexType));
        }
        function checkIndexConstraintForProperty(prop, propertyType, containingType, indexDeclaration, indexType, indexKind) {
          if (!indexType) {
            return;
          }
          if (indexKind === 1 && !isNumericName(prop.valueDeclaration.name)) {
            return;
          }
          var errorNode;
          if (prop.valueDeclaration.name.kind === 137 || prop.parent === containingType.symbol) {
            errorNode = prop.valueDeclaration;
          } else if (indexDeclaration) {
            errorNode = indexDeclaration;
          } else if (containingType.flags & 2048) {
            var someBaseClassHasBothPropertyAndIndexer = ts.forEach(getBaseTypes(containingType), function(base) {
              return getPropertyOfObjectType(base, prop.name) && getIndexTypeOfType(base, indexKind);
            });
            errorNode = someBaseClassHasBothPropertyAndIndexer ? undefined : containingType.symbol.declarations[0];
          }
          if (errorNode && !isTypeAssignableTo(propertyType, indexType)) {
            var errorMessage = indexKind === 0 ? ts.Diagnostics.Property_0_of_type_1_is_not_assignable_to_string_index_type_2 : ts.Diagnostics.Property_0_of_type_1_is_not_assignable_to_numeric_index_type_2;
            error(errorNode, errorMessage, symbolToString(prop), typeToString(propertyType), typeToString(indexType));
          }
        }
      }
      function checkTypeNameIsReserved(name, message) {
        switch (name.text) {
          case "any":
          case "number":
          case "boolean":
          case "string":
          case "symbol":
          case "void":
            error(name, message, name.text);
        }
      }
      function checkTypeParameters(typeParameterDeclarations) {
        if (typeParameterDeclarations) {
          for (var i = 0,
              n = typeParameterDeclarations.length; i < n; i++) {
            var node = typeParameterDeclarations[i];
            checkTypeParameter(node);
            if (produceDiagnostics) {
              for (var j = 0; j < i; j++) {
                if (typeParameterDeclarations[j].symbol === node.symbol) {
                  error(node.name, ts.Diagnostics.Duplicate_identifier_0, ts.declarationNameToString(node.name));
                }
              }
            }
          }
        }
      }
      function checkClassExpression(node) {
        checkClassLikeDeclaration(node);
        checkNodeDeferred(node);
        return getTypeOfSymbol(getSymbolOfNode(node));
      }
      function checkClassExpressionDeferred(node) {
        ts.forEach(node.members, checkSourceElement);
      }
      function checkClassDeclaration(node) {
        if (!node.name && !(node.flags & 512)) {
          grammarErrorOnFirstToken(node, ts.Diagnostics.A_class_declaration_without_the_default_modifier_must_have_a_name);
        }
        checkClassLikeDeclaration(node);
        ts.forEach(node.members, checkSourceElement);
      }
      function checkClassLikeDeclaration(node) {
        checkGrammarClassDeclarationHeritageClauses(node);
        checkDecorators(node);
        if (node.name) {
          checkTypeNameIsReserved(node.name, ts.Diagnostics.Class_name_cannot_be_0);
          checkCollisionWithCapturedThisVariable(node, node.name);
          checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
          checkCollisionWithGlobalPromiseInGeneratedCode(node, node.name);
        }
        checkTypeParameters(node.typeParameters);
        checkExportsOnMergedDeclarations(node);
        var symbol = getSymbolOfNode(node);
        var type = getDeclaredTypeOfSymbol(symbol);
        var typeWithThis = getTypeWithThisArgument(type);
        var staticType = getTypeOfSymbol(symbol);
        var baseTypeNode = ts.getClassExtendsHeritageClauseElement(node);
        if (baseTypeNode) {
          var baseTypes = getBaseTypes(type);
          if (baseTypes.length && produceDiagnostics) {
            var baseType_1 = baseTypes[0];
            var staticBaseType = getBaseConstructorTypeOfClass(type);
            checkSourceElement(baseTypeNode.expression);
            if (baseTypeNode.typeArguments) {
              ts.forEach(baseTypeNode.typeArguments, checkSourceElement);
              for (var _i = 0,
                  _a = getConstructorsForTypeArguments(staticBaseType, baseTypeNode.typeArguments); _i < _a.length; _i++) {
                var constructor = _a[_i];
                if (!checkTypeArgumentConstraints(constructor.typeParameters, baseTypeNode.typeArguments)) {
                  break;
                }
              }
            }
            checkTypeAssignableTo(typeWithThis, getTypeWithThisArgument(baseType_1, type.thisType), node.name || node, ts.Diagnostics.Class_0_incorrectly_extends_base_class_1);
            checkTypeAssignableTo(staticType, getTypeWithoutSignatures(staticBaseType), node.name || node, ts.Diagnostics.Class_static_side_0_incorrectly_extends_base_class_static_side_1);
            if (!(staticBaseType.symbol && staticBaseType.symbol.flags & 32)) {
              var constructors = getInstantiatedConstructorsForTypeArguments(staticBaseType, baseTypeNode.typeArguments);
              if (ts.forEach(constructors, function(sig) {
                return getReturnTypeOfSignature(sig) !== baseType_1;
              })) {
                error(baseTypeNode.expression, ts.Diagnostics.Base_constructors_must_all_have_the_same_return_type);
              }
            }
            checkKindsOfPropertyMemberOverrides(type, baseType_1);
          }
        }
        var implementedTypeNodes = ts.getClassImplementsHeritageClauseElements(node);
        if (implementedTypeNodes) {
          for (var _b = 0,
              implementedTypeNodes_1 = implementedTypeNodes; _b < implementedTypeNodes_1.length; _b++) {
            var typeRefNode = implementedTypeNodes_1[_b];
            if (!ts.isSupportedExpressionWithTypeArguments(typeRefNode)) {
              error(typeRefNode.expression, ts.Diagnostics.A_class_can_only_implement_an_identifier_Slashqualified_name_with_optional_type_arguments);
            }
            checkTypeReferenceNode(typeRefNode);
            if (produceDiagnostics) {
              var t = getTypeFromTypeNode(typeRefNode);
              if (t !== unknownType) {
                var declaredType = (t.flags & 4096) ? t.target : t;
                if (declaredType.flags & (1024 | 2048)) {
                  checkTypeAssignableTo(typeWithThis, getTypeWithThisArgument(t, type.thisType), node.name || node, ts.Diagnostics.Class_0_incorrectly_implements_interface_1);
                } else {
                  error(typeRefNode, ts.Diagnostics.A_class_may_only_implement_another_class_or_interface);
                }
              }
            }
          }
        }
        if (produceDiagnostics) {
          checkIndexConstraints(type);
          checkTypeForDuplicateIndexSignatures(node);
        }
      }
      function getTargetSymbol(s) {
        return s.flags & 16777216 ? getSymbolLinks(s).target : s;
      }
      function getClassLikeDeclarationOfSymbol(symbol) {
        return ts.forEach(symbol.declarations, function(d) {
          return ts.isClassLike(d) ? d : undefined;
        });
      }
      function checkKindsOfPropertyMemberOverrides(type, baseType) {
        var baseProperties = getPropertiesOfObjectType(baseType);
        for (var _i = 0,
            baseProperties_1 = baseProperties; _i < baseProperties_1.length; _i++) {
          var baseProperty = baseProperties_1[_i];
          var base = getTargetSymbol(baseProperty);
          if (base.flags & 134217728) {
            continue;
          }
          var derived = getTargetSymbol(getPropertyOfObjectType(type, base.name));
          var baseDeclarationFlags = getDeclarationFlagsFromSymbol(base);
          ts.Debug.assert(!!derived, "derived should point to something, even if it is the base class' declaration.");
          if (derived) {
            if (derived === base) {
              var derivedClassDecl = getClassLikeDeclarationOfSymbol(type.symbol);
              if (baseDeclarationFlags & 128 && (!derivedClassDecl || !(derivedClassDecl.flags & 128))) {
                if (derivedClassDecl.kind === 189) {
                  error(derivedClassDecl, ts.Diagnostics.Non_abstract_class_expression_does_not_implement_inherited_abstract_member_0_from_class_1, symbolToString(baseProperty), typeToString(baseType));
                } else {
                  error(derivedClassDecl, ts.Diagnostics.Non_abstract_class_0_does_not_implement_inherited_abstract_member_1_from_class_2, typeToString(type), symbolToString(baseProperty), typeToString(baseType));
                }
              }
            } else {
              var derivedDeclarationFlags = getDeclarationFlagsFromSymbol(derived);
              if ((baseDeclarationFlags & 16) || (derivedDeclarationFlags & 16)) {
                continue;
              }
              if ((baseDeclarationFlags & 64) !== (derivedDeclarationFlags & 64)) {
                continue;
              }
              if ((base.flags & derived.flags & 8192) || ((base.flags & 98308) && (derived.flags & 98308))) {
                continue;
              }
              var errorMessage = void 0;
              if (base.flags & 8192) {
                if (derived.flags & 98304) {
                  errorMessage = ts.Diagnostics.Class_0_defines_instance_member_function_1_but_extended_class_2_defines_it_as_instance_member_accessor;
                } else {
                  ts.Debug.assert((derived.flags & 4) !== 0);
                  errorMessage = ts.Diagnostics.Class_0_defines_instance_member_function_1_but_extended_class_2_defines_it_as_instance_member_property;
                }
              } else if (base.flags & 4) {
                ts.Debug.assert((derived.flags & 8192) !== 0);
                errorMessage = ts.Diagnostics.Class_0_defines_instance_member_property_1_but_extended_class_2_defines_it_as_instance_member_function;
              } else {
                ts.Debug.assert((base.flags & 98304) !== 0);
                ts.Debug.assert((derived.flags & 8192) !== 0);
                errorMessage = ts.Diagnostics.Class_0_defines_instance_member_accessor_1_but_extended_class_2_defines_it_as_instance_member_function;
              }
              error(derived.valueDeclaration.name, errorMessage, typeToString(baseType), symbolToString(base), typeToString(type));
            }
          }
        }
      }
      function isAccessor(kind) {
        return kind === 146 || kind === 147;
      }
      function areTypeParametersIdentical(list1, list2) {
        if (!list1 && !list2) {
          return true;
        }
        if (!list1 || !list2 || list1.length !== list2.length) {
          return false;
        }
        for (var i = 0,
            len = list1.length; i < len; i++) {
          var tp1 = list1[i];
          var tp2 = list2[i];
          if (tp1.name.text !== tp2.name.text) {
            return false;
          }
          if (!tp1.constraint && !tp2.constraint) {
            continue;
          }
          if (!tp1.constraint || !tp2.constraint) {
            return false;
          }
          if (!isTypeIdenticalTo(getTypeFromTypeNode(tp1.constraint), getTypeFromTypeNode(tp2.constraint))) {
            return false;
          }
        }
        return true;
      }
      function checkInheritedPropertiesAreIdentical(type, typeNode) {
        var baseTypes = getBaseTypes(type);
        if (baseTypes.length < 2) {
          return true;
        }
        var seen = {};
        ts.forEach(resolveDeclaredMembers(type).declaredProperties, function(p) {
          seen[p.name] = {
            prop: p,
            containingType: type
          };
        });
        var ok = true;
        for (var _i = 0,
            baseTypes_2 = baseTypes; _i < baseTypes_2.length; _i++) {
          var base = baseTypes_2[_i];
          var properties = getPropertiesOfObjectType(getTypeWithThisArgument(base, type.thisType));
          for (var _a = 0,
              properties_4 = properties; _a < properties_4.length; _a++) {
            var prop = properties_4[_a];
            if (!ts.hasProperty(seen, prop.name)) {
              seen[prop.name] = {
                prop: prop,
                containingType: base
              };
            } else {
              var existing = seen[prop.name];
              var isInheritedProperty = existing.containingType !== type;
              if (isInheritedProperty && !isPropertyIdenticalTo(existing.prop, prop)) {
                ok = false;
                var typeName1 = typeToString(existing.containingType);
                var typeName2 = typeToString(base);
                var errorInfo = ts.chainDiagnosticMessages(undefined, ts.Diagnostics.Named_property_0_of_types_1_and_2_are_not_identical, symbolToString(prop), typeName1, typeName2);
                errorInfo = ts.chainDiagnosticMessages(errorInfo, ts.Diagnostics.Interface_0_cannot_simultaneously_extend_types_1_and_2, typeToString(type), typeName1, typeName2);
                diagnostics.add(ts.createDiagnosticForNodeFromMessageChain(typeNode, errorInfo));
              }
            }
          }
        }
        return ok;
      }
      function checkInterfaceDeclaration(node) {
        checkGrammarDecorators(node) || checkGrammarModifiers(node) || checkGrammarInterfaceDeclaration(node);
        checkTypeParameters(node.typeParameters);
        if (produceDiagnostics) {
          checkTypeNameIsReserved(node.name, ts.Diagnostics.Interface_name_cannot_be_0);
          checkExportsOnMergedDeclarations(node);
          var symbol = getSymbolOfNode(node);
          var firstInterfaceDecl = ts.getDeclarationOfKind(symbol, 218);
          if (symbol.declarations.length > 1) {
            if (node !== firstInterfaceDecl && !areTypeParametersIdentical(firstInterfaceDecl.typeParameters, node.typeParameters)) {
              error(node.name, ts.Diagnostics.All_declarations_of_an_interface_must_have_identical_type_parameters);
            }
          }
          if (node === firstInterfaceDecl) {
            var type = getDeclaredTypeOfSymbol(symbol);
            var typeWithThis = getTypeWithThisArgument(type);
            if (checkInheritedPropertiesAreIdentical(type, node.name)) {
              for (var _i = 0,
                  _a = getBaseTypes(type); _i < _a.length; _i++) {
                var baseType = _a[_i];
                checkTypeAssignableTo(typeWithThis, getTypeWithThisArgument(baseType, type.thisType), node.name, ts.Diagnostics.Interface_0_incorrectly_extends_interface_1);
              }
              checkIndexConstraints(type);
            }
          }
        }
        ts.forEach(ts.getInterfaceBaseTypeNodes(node), function(heritageElement) {
          if (!ts.isSupportedExpressionWithTypeArguments(heritageElement)) {
            error(heritageElement.expression, ts.Diagnostics.An_interface_can_only_extend_an_identifier_Slashqualified_name_with_optional_type_arguments);
          }
          checkTypeReferenceNode(heritageElement);
        });
        ts.forEach(node.members, checkSourceElement);
        if (produceDiagnostics) {
          checkTypeForDuplicateIndexSignatures(node);
        }
      }
      function checkTypeAliasDeclaration(node) {
        checkGrammarDecorators(node) || checkGrammarModifiers(node);
        checkTypeNameIsReserved(node.name, ts.Diagnostics.Type_alias_name_cannot_be_0);
        checkSourceElement(node.type);
      }
      function computeEnumMemberValues(node) {
        var nodeLinks = getNodeLinks(node);
        if (!(nodeLinks.flags & 16384)) {
          var enumSymbol = getSymbolOfNode(node);
          var enumType = getDeclaredTypeOfSymbol(enumSymbol);
          var autoValue = 0;
          var ambient = ts.isInAmbientContext(node);
          var enumIsConst = ts.isConst(node);
          for (var _i = 0,
              _a = node.members; _i < _a.length; _i++) {
            var member = _a[_i];
            if (isComputedNonLiteralName(member.name)) {
              error(member.name, ts.Diagnostics.Computed_property_names_are_not_allowed_in_enums);
            } else {
              var text = getTextOfPropertyName(member.name);
              if (isNumericLiteralName(text)) {
                error(member.name, ts.Diagnostics.An_enum_member_cannot_have_a_numeric_name);
              }
            }
            var previousEnumMemberIsNonConstant = autoValue === undefined;
            var initializer = member.initializer;
            if (initializer) {
              autoValue = computeConstantValueForEnumMemberInitializer(initializer, enumType, enumIsConst, ambient);
            } else if (ambient && !enumIsConst) {
              autoValue = undefined;
            } else if (previousEnumMemberIsNonConstant) {
              error(member.name, ts.Diagnostics.Enum_member_must_have_initializer);
            }
            if (autoValue !== undefined) {
              getNodeLinks(member).enumMemberValue = autoValue;
              autoValue++;
            }
          }
          nodeLinks.flags |= 16384;
        }
        function computeConstantValueForEnumMemberInitializer(initializer, enumType, enumIsConst, ambient) {
          var reportError = true;
          var value = evalConstant(initializer);
          if (reportError) {
            if (value === undefined) {
              if (enumIsConst) {
                error(initializer, ts.Diagnostics.In_const_enum_declarations_member_initializer_must_be_constant_expression);
              } else if (ambient) {
                error(initializer, ts.Diagnostics.In_ambient_enum_declarations_member_initializer_must_be_constant_expression);
              } else {
                checkTypeAssignableTo(checkExpression(initializer), enumType, initializer, undefined);
              }
            } else if (enumIsConst) {
              if (isNaN(value)) {
                error(initializer, ts.Diagnostics.const_enum_member_initializer_was_evaluated_to_disallowed_value_NaN);
              } else if (!isFinite(value)) {
                error(initializer, ts.Diagnostics.const_enum_member_initializer_was_evaluated_to_a_non_finite_value);
              }
            }
          }
          return value;
          function evalConstant(e) {
            switch (e.kind) {
              case 182:
                var value_1 = evalConstant(e.operand);
                if (value_1 === undefined) {
                  return undefined;
                }
                switch (e.operator) {
                  case 35:
                    return value_1;
                  case 36:
                    return -value_1;
                  case 50:
                    return ~value_1;
                }
                return undefined;
              case 184:
                var left = evalConstant(e.left);
                if (left === undefined) {
                  return undefined;
                }
                var right = evalConstant(e.right);
                if (right === undefined) {
                  return undefined;
                }
                switch (e.operatorToken.kind) {
                  case 47:
                    return left | right;
                  case 46:
                    return left & right;
                  case 44:
                    return left >> right;
                  case 45:
                    return left >>> right;
                  case 43:
                    return left << right;
                  case 48:
                    return left ^ right;
                  case 37:
                    return left * right;
                  case 39:
                    return left / right;
                  case 35:
                    return left + right;
                  case 36:
                    return left - right;
                  case 40:
                    return left % right;
                }
                return undefined;
              case 8:
                return +e.text;
              case 175:
                return evalConstant(e.expression);
              case 69:
              case 170:
              case 169:
                var member = initializer.parent;
                var currentType = getTypeOfSymbol(getSymbolOfNode(member.parent));
                var enumType_1;
                var propertyName = void 0;
                if (e.kind === 69) {
                  enumType_1 = currentType;
                  propertyName = e.text;
                } else {
                  var expression = void 0;
                  if (e.kind === 170) {
                    if (e.argumentExpression === undefined || e.argumentExpression.kind !== 9) {
                      return undefined;
                    }
                    expression = e.expression;
                    propertyName = e.argumentExpression.text;
                  } else {
                    expression = e.expression;
                    propertyName = e.name.text;
                  }
                  var current = expression;
                  while (current) {
                    if (current.kind === 69) {
                      break;
                    } else if (current.kind === 169) {
                      current = current.expression;
                    } else {
                      return undefined;
                    }
                  }
                  enumType_1 = checkExpression(expression);
                  if (!(enumType_1.symbol && (enumType_1.symbol.flags & 384))) {
                    return undefined;
                  }
                }
                if (propertyName === undefined) {
                  return undefined;
                }
                var property = getPropertyOfObjectType(enumType_1, propertyName);
                if (!property || !(property.flags & 8)) {
                  return undefined;
                }
                var propertyDecl = property.valueDeclaration;
                if (member === propertyDecl) {
                  return undefined;
                }
                if (!isBlockScopedNameDeclaredBeforeUse(propertyDecl, member)) {
                  reportError = false;
                  error(e, ts.Diagnostics.A_member_initializer_in_a_enum_declaration_cannot_reference_members_declared_after_it_including_members_defined_in_other_enums);
                  return undefined;
                }
                return getNodeLinks(propertyDecl).enumMemberValue;
            }
          }
        }
      }
      function checkEnumDeclaration(node) {
        if (!produceDiagnostics) {
          return;
        }
        checkGrammarDecorators(node) || checkGrammarModifiers(node);
        checkTypeNameIsReserved(node.name, ts.Diagnostics.Enum_name_cannot_be_0);
        checkCollisionWithCapturedThisVariable(node, node.name);
        checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
        checkCollisionWithGlobalPromiseInGeneratedCode(node, node.name);
        checkExportsOnMergedDeclarations(node);
        computeEnumMemberValues(node);
        var enumIsConst = ts.isConst(node);
        if (compilerOptions.isolatedModules && enumIsConst && ts.isInAmbientContext(node)) {
          error(node.name, ts.Diagnostics.Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided);
        }
        var enumSymbol = getSymbolOfNode(node);
        var firstDeclaration = ts.getDeclarationOfKind(enumSymbol, node.kind);
        if (node === firstDeclaration) {
          if (enumSymbol.declarations.length > 1) {
            ts.forEach(enumSymbol.declarations, function(decl) {
              if (ts.isConstEnumDeclaration(decl) !== enumIsConst) {
                error(decl.name, ts.Diagnostics.Enum_declarations_must_all_be_const_or_non_const);
              }
            });
          }
          var seenEnumMissingInitialInitializer_1 = false;
          ts.forEach(enumSymbol.declarations, function(declaration) {
            if (declaration.kind !== 220) {
              return false;
            }
            var enumDeclaration = declaration;
            if (!enumDeclaration.members.length) {
              return false;
            }
            var firstEnumMember = enumDeclaration.members[0];
            if (!firstEnumMember.initializer) {
              if (seenEnumMissingInitialInitializer_1) {
                error(firstEnumMember.name, ts.Diagnostics.In_an_enum_with_multiple_declarations_only_one_declaration_can_omit_an_initializer_for_its_first_enum_element);
              } else {
                seenEnumMissingInitialInitializer_1 = true;
              }
            }
          });
        }
      }
      function getFirstNonAmbientClassOrFunctionDeclaration(symbol) {
        var declarations = symbol.declarations;
        for (var _i = 0,
            declarations_5 = declarations; _i < declarations_5.length; _i++) {
          var declaration = declarations_5[_i];
          if ((declaration.kind === 217 || (declaration.kind === 216 && ts.nodeIsPresent(declaration.body))) && !ts.isInAmbientContext(declaration)) {
            return declaration;
          }
        }
        return undefined;
      }
      function inSameLexicalScope(node1, node2) {
        var container1 = ts.getEnclosingBlockScopeContainer(node1);
        var container2 = ts.getEnclosingBlockScopeContainer(node2);
        if (isGlobalSourceFile(container1)) {
          return isGlobalSourceFile(container2);
        } else if (isGlobalSourceFile(container2)) {
          return false;
        } else {
          return container1 === container2;
        }
      }
      function checkModuleDeclaration(node) {
        if (produceDiagnostics) {
          var isGlobalAugmentation = ts.isGlobalScopeAugmentation(node);
          var inAmbientContext = ts.isInAmbientContext(node);
          if (isGlobalAugmentation && !inAmbientContext) {
            error(node.name, ts.Diagnostics.Augmentations_for_the_global_scope_should_have_declare_modifier_unless_they_appear_in_already_ambient_context);
          }
          var isAmbientExternalModule = ts.isAmbientModule(node);
          var contextErrorMessage = isAmbientExternalModule ? ts.Diagnostics.An_ambient_module_declaration_is_only_allowed_at_the_top_level_in_a_file : ts.Diagnostics.A_namespace_declaration_is_only_allowed_in_a_namespace_or_module;
          if (checkGrammarModuleElementContext(node, contextErrorMessage)) {
            return;
          }
          if (!checkGrammarDecorators(node) && !checkGrammarModifiers(node)) {
            if (!inAmbientContext && node.name.kind === 9) {
              grammarErrorOnNode(node.name, ts.Diagnostics.Only_ambient_modules_can_use_quoted_names);
            }
          }
          checkCollisionWithCapturedThisVariable(node, node.name);
          checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
          checkCollisionWithGlobalPromiseInGeneratedCode(node, node.name);
          checkExportsOnMergedDeclarations(node);
          var symbol = getSymbolOfNode(node);
          if (symbol.flags & 512 && symbol.declarations.length > 1 && !inAmbientContext && ts.isInstantiatedModule(node, compilerOptions.preserveConstEnums || compilerOptions.isolatedModules)) {
            var firstNonAmbientClassOrFunc = getFirstNonAmbientClassOrFunctionDeclaration(symbol);
            if (firstNonAmbientClassOrFunc) {
              if (ts.getSourceFileOfNode(node) !== ts.getSourceFileOfNode(firstNonAmbientClassOrFunc)) {
                error(node.name, ts.Diagnostics.A_namespace_declaration_cannot_be_in_a_different_file_from_a_class_or_function_with_which_it_is_merged);
              } else if (node.pos < firstNonAmbientClassOrFunc.pos) {
                error(node.name, ts.Diagnostics.A_namespace_declaration_cannot_be_located_prior_to_a_class_or_function_with_which_it_is_merged);
              }
            }
            var mergedClass = ts.getDeclarationOfKind(symbol, 217);
            if (mergedClass && inSameLexicalScope(node, mergedClass)) {
              getNodeLinks(node).flags |= 32768;
            }
          }
          if (isAmbientExternalModule) {
            if (ts.isExternalModuleAugmentation(node)) {
              var checkBody = isGlobalAugmentation || (getSymbolOfNode(node).flags & 33554432);
              if (checkBody) {
                for (var _i = 0,
                    _a = node.body.statements; _i < _a.length; _i++) {
                  var statement = _a[_i];
                  checkModuleAugmentationElement(statement, isGlobalAugmentation);
                }
              }
            } else if (isGlobalSourceFile(node.parent)) {
              if (isGlobalAugmentation) {
                error(node.name, ts.Diagnostics.Augmentations_for_the_global_scope_can_only_be_directly_nested_in_external_modules_or_ambient_module_declarations);
              } else if (ts.isExternalModuleNameRelative(node.name.text)) {
                error(node.name, ts.Diagnostics.Ambient_module_declaration_cannot_specify_relative_module_name);
              }
            } else {
              if (isGlobalAugmentation) {
                error(node.name, ts.Diagnostics.Augmentations_for_the_global_scope_can_only_be_directly_nested_in_external_modules_or_ambient_module_declarations);
              } else {
                error(node.name, ts.Diagnostics.Ambient_modules_cannot_be_nested_in_other_modules_or_namespaces);
              }
            }
          }
        }
        checkSourceElement(node.body);
      }
      function checkModuleAugmentationElement(node, isGlobalAugmentation) {
        switch (node.kind) {
          case 196:
            for (var _i = 0,
                _a = node.declarationList.declarations; _i < _a.length; _i++) {
              var decl = _a[_i];
              checkModuleAugmentationElement(decl, isGlobalAugmentation);
            }
            break;
          case 230:
          case 231:
            grammarErrorOnFirstToken(node, ts.Diagnostics.Exports_and_export_assignments_are_not_permitted_in_module_augmentations);
            break;
          case 224:
            if (node.moduleReference.kind !== 9) {
              error(node.name, ts.Diagnostics.Module_augmentation_cannot_introduce_new_names_in_the_top_level_scope);
              break;
            }
          case 225:
            grammarErrorOnFirstToken(node, ts.Diagnostics.Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_module);
            break;
          case 166:
          case 214:
            var name_17 = node.name;
            if (ts.isBindingPattern(name_17)) {
              for (var _b = 0,
                  _c = name_17.elements; _b < _c.length; _b++) {
                var el = _c[_b];
                checkModuleAugmentationElement(el, isGlobalAugmentation);
              }
              break;
            }
          case 217:
          case 220:
          case 216:
          case 218:
          case 221:
          case 219:
            var symbol = getSymbolOfNode(node);
            if (symbol) {
              var reportError = !(symbol.flags & 33554432);
              if (!reportError) {
                if (isGlobalAugmentation) {
                  reportError = symbol.parent !== undefined;
                } else {
                  reportError = ts.isExternalModuleAugmentation(symbol.parent.valueDeclaration);
                }
              }
              if (reportError) {
                error(node, ts.Diagnostics.Module_augmentation_cannot_introduce_new_names_in_the_top_level_scope);
              }
            }
            break;
        }
      }
      function getFirstIdentifier(node) {
        while (true) {
          if (node.kind === 136) {
            node = node.left;
          } else if (node.kind === 169) {
            node = node.expression;
          } else {
            break;
          }
        }
        ts.Debug.assert(node.kind === 69);
        return node;
      }
      function checkExternalImportOrExportDeclaration(node) {
        var moduleName = ts.getExternalModuleName(node);
        if (!ts.nodeIsMissing(moduleName) && moduleName.kind !== 9) {
          error(moduleName, ts.Diagnostics.String_literal_expected);
          return false;
        }
        var inAmbientExternalModule = node.parent.kind === 222 && ts.isAmbientModule(node.parent.parent);
        if (node.parent.kind !== 251 && !inAmbientExternalModule) {
          error(moduleName, node.kind === 231 ? ts.Diagnostics.Export_declarations_are_not_permitted_in_a_namespace : ts.Diagnostics.Import_declarations_in_a_namespace_cannot_reference_a_module);
          return false;
        }
        if (inAmbientExternalModule && ts.isExternalModuleNameRelative(moduleName.text)) {
          if (!isTopLevelInExternalModuleAugmentation(node)) {
            error(node, ts.Diagnostics.Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relative_module_name);
            return false;
          }
        }
        return true;
      }
      function checkAliasSymbol(node) {
        var symbol = getSymbolOfNode(node);
        var target = resolveAlias(symbol);
        if (target !== unknownSymbol) {
          var excludedMeanings = (symbol.flags & 107455 ? 107455 : 0) | (symbol.flags & 793056 ? 793056 : 0) | (symbol.flags & 1536 ? 1536 : 0);
          if (target.flags & excludedMeanings) {
            var message = node.kind === 233 ? ts.Diagnostics.Export_declaration_conflicts_with_exported_declaration_of_0 : ts.Diagnostics.Import_declaration_conflicts_with_local_declaration_of_0;
            error(node, message, symbolToString(symbol));
          }
        }
      }
      function checkImportBinding(node) {
        checkCollisionWithCapturedThisVariable(node, node.name);
        checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
        checkCollisionWithGlobalPromiseInGeneratedCode(node, node.name);
        checkAliasSymbol(node);
      }
      function checkImportDeclaration(node) {
        if (checkGrammarModuleElementContext(node, ts.Diagnostics.An_import_declaration_can_only_be_used_in_a_namespace_or_module)) {
          return;
        }
        if (!checkGrammarDecorators(node) && !checkGrammarModifiers(node) && (node.flags & 1022)) {
          grammarErrorOnFirstToken(node, ts.Diagnostics.An_import_declaration_cannot_have_modifiers);
        }
        if (checkExternalImportOrExportDeclaration(node)) {
          var importClause = node.importClause;
          if (importClause) {
            if (importClause.name) {
              checkImportBinding(importClause);
            }
            if (importClause.namedBindings) {
              if (importClause.namedBindings.kind === 227) {
                checkImportBinding(importClause.namedBindings);
              } else {
                ts.forEach(importClause.namedBindings.elements, checkImportBinding);
              }
            }
          }
        }
      }
      function checkImportEqualsDeclaration(node) {
        if (checkGrammarModuleElementContext(node, ts.Diagnostics.An_import_declaration_can_only_be_used_in_a_namespace_or_module)) {
          return;
        }
        checkGrammarDecorators(node) || checkGrammarModifiers(node);
        if (ts.isInternalModuleImportEqualsDeclaration(node) || checkExternalImportOrExportDeclaration(node)) {
          checkImportBinding(node);
          if (node.flags & 2) {
            markExportAsReferenced(node);
          }
          if (ts.isInternalModuleImportEqualsDeclaration(node)) {
            var target = resolveAlias(getSymbolOfNode(node));
            if (target !== unknownSymbol) {
              if (target.flags & 107455) {
                var moduleName = getFirstIdentifier(node.moduleReference);
                if (!(resolveEntityName(moduleName, 107455 | 1536).flags & 1536)) {
                  error(moduleName, ts.Diagnostics.Module_0_is_hidden_by_a_local_declaration_with_the_same_name, ts.declarationNameToString(moduleName));
                }
              }
              if (target.flags & 793056) {
                checkTypeNameIsReserved(node.name, ts.Diagnostics.Import_name_cannot_be_0);
              }
            }
          } else {
            if (modulekind === 5 && !ts.isInAmbientContext(node)) {
              grammarErrorOnNode(node, ts.Diagnostics.Import_assignment_cannot_be_used_when_targeting_ECMAScript_6_modules_Consider_using_import_Asterisk_as_ns_from_mod_import_a_from_mod_import_d_from_mod_or_another_module_format_instead);
            }
          }
        }
      }
      function checkExportDeclaration(node) {
        if (checkGrammarModuleElementContext(node, ts.Diagnostics.An_export_declaration_can_only_be_used_in_a_module)) {
          return;
        }
        if (!checkGrammarDecorators(node) && !checkGrammarModifiers(node) && (node.flags & 1022)) {
          grammarErrorOnFirstToken(node, ts.Diagnostics.An_export_declaration_cannot_have_modifiers);
        }
        if (!node.moduleSpecifier || checkExternalImportOrExportDeclaration(node)) {
          if (node.exportClause) {
            ts.forEach(node.exportClause.elements, checkExportSpecifier);
            var inAmbientExternalModule = node.parent.kind === 222 && ts.isAmbientModule(node.parent.parent);
            if (node.parent.kind !== 251 && !inAmbientExternalModule) {
              error(node, ts.Diagnostics.Export_declarations_are_not_permitted_in_a_namespace);
            }
          } else {
            var moduleSymbol = resolveExternalModuleName(node, node.moduleSpecifier);
            if (moduleSymbol && hasExportAssignmentSymbol(moduleSymbol)) {
              error(node.moduleSpecifier, ts.Diagnostics.Module_0_uses_export_and_cannot_be_used_with_export_Asterisk, symbolToString(moduleSymbol));
            }
          }
        }
      }
      function checkGrammarModuleElementContext(node, errorMessage) {
        if (node.parent.kind !== 251 && node.parent.kind !== 222 && node.parent.kind !== 221) {
          return grammarErrorOnFirstToken(node, errorMessage);
        }
      }
      function checkExportSpecifier(node) {
        checkAliasSymbol(node);
        if (!node.parent.parent.moduleSpecifier) {
          var exportedName = node.propertyName || node.name;
          var symbol = resolveName(exportedName, exportedName.text, 107455 | 793056 | 1536 | 8388608, undefined, undefined);
          if (symbol && (symbol === undefinedSymbol || isGlobalSourceFile(getDeclarationContainer(symbol.declarations[0])))) {
            error(exportedName, ts.Diagnostics.Cannot_re_export_name_that_is_not_defined_in_the_module);
          } else {
            markExportAsReferenced(node);
          }
        }
      }
      function checkExportAssignment(node) {
        if (checkGrammarModuleElementContext(node, ts.Diagnostics.An_export_assignment_can_only_be_used_in_a_module)) {
          return;
        }
        var container = node.parent.kind === 251 ? node.parent : node.parent.parent;
        if (container.kind === 221 && !ts.isAmbientModule(container)) {
          error(node, ts.Diagnostics.An_export_assignment_cannot_be_used_in_a_namespace);
          return;
        }
        if (!checkGrammarDecorators(node) && !checkGrammarModifiers(node) && (node.flags & 1022)) {
          grammarErrorOnFirstToken(node, ts.Diagnostics.An_export_assignment_cannot_have_modifiers);
        }
        if (node.expression.kind === 69) {
          markExportAsReferenced(node);
        } else {
          checkExpressionCached(node.expression);
        }
        checkExternalModuleExports(container);
        if (node.isExportEquals && !ts.isInAmbientContext(node)) {
          if (modulekind === 5) {
            grammarErrorOnNode(node, ts.Diagnostics.Export_assignment_cannot_be_used_when_targeting_ECMAScript_6_modules_Consider_using_export_default_or_another_module_format_instead);
          } else if (modulekind === 4) {
            grammarErrorOnNode(node, ts.Diagnostics.Export_assignment_is_not_supported_when_module_flag_is_system);
          }
        }
      }
      function hasExportedMembers(moduleSymbol) {
        for (var id in moduleSymbol.exports) {
          if (id !== "export=") {
            return true;
          }
        }
        return false;
      }
      function checkExternalModuleExports(node) {
        var moduleSymbol = getSymbolOfNode(node);
        var links = getSymbolLinks(moduleSymbol);
        if (!links.exportsChecked) {
          var exportEqualsSymbol = moduleSymbol.exports["export="];
          if (exportEqualsSymbol && hasExportedMembers(moduleSymbol)) {
            var declaration = getDeclarationOfAliasSymbol(exportEqualsSymbol) || exportEqualsSymbol.valueDeclaration;
            if (!isTopLevelInExternalModuleAugmentation(declaration)) {
              error(declaration, ts.Diagnostics.An_export_assignment_cannot_be_used_in_a_module_with_other_exported_elements);
            }
          }
          var exports = getExportsOfModule(moduleSymbol);
          for (var id in exports) {
            if (id === "__export") {
              continue;
            }
            var _a = exports[id],
                declarations = _a.declarations,
                flags = _a.flags;
            if (!(flags & (1536 | 64 | 384)) && (flags & 524288 ? declarations.length - 1 : declarations.length) > 1) {
              var exportedDeclarations = ts.filter(declarations, isNotOverload);
              if (exportedDeclarations.length > 1) {
                for (var _i = 0,
                    exportedDeclarations_1 = exportedDeclarations; _i < exportedDeclarations_1.length; _i++) {
                  var declaration = exportedDeclarations_1[_i];
                  diagnostics.add(ts.createDiagnosticForNode(declaration, ts.Diagnostics.Cannot_redeclare_exported_variable_0, id));
                }
              }
            }
          }
          links.exportsChecked = true;
        }
        function isNotOverload(declaration) {
          return declaration.kind !== 216 || !!declaration.body;
        }
      }
      function checkSourceElement(node) {
        if (!node) {
          return;
        }
        var kind = node.kind;
        if (cancellationToken) {
          switch (kind) {
            case 221:
            case 217:
            case 218:
            case 216:
              cancellationToken.throwIfCancellationRequested();
          }
        }
        switch (kind) {
          case 138:
            return checkTypeParameter(node);
          case 139:
            return checkParameter(node);
          case 142:
          case 141:
            return checkPropertyDeclaration(node);
          case 153:
          case 154:
          case 148:
          case 149:
            return checkSignatureDeclaration(node);
          case 150:
            return checkSignatureDeclaration(node);
          case 144:
          case 143:
            return checkMethodDeclaration(node);
          case 145:
            return checkConstructorDeclaration(node);
          case 146:
          case 147:
            return checkAccessorDeclaration(node);
          case 152:
            return checkTypeReferenceNode(node);
          case 151:
            return checkTypePredicate(node);
          case 155:
            return checkTypeQuery(node);
          case 156:
            return checkTypeLiteral(node);
          case 157:
            return checkArrayType(node);
          case 158:
            return checkTupleType(node);
          case 159:
          case 160:
            return checkUnionOrIntersectionType(node);
          case 161:
            return checkSourceElement(node.type);
          case 216:
            return checkFunctionDeclaration(node);
          case 195:
          case 222:
            return checkBlock(node);
          case 196:
            return checkVariableStatement(node);
          case 198:
            return checkExpressionStatement(node);
          case 199:
            return checkIfStatement(node);
          case 200:
            return checkDoStatement(node);
          case 201:
            return checkWhileStatement(node);
          case 202:
            return checkForStatement(node);
          case 203:
            return checkForInStatement(node);
          case 204:
            return checkForOfStatement(node);
          case 205:
          case 206:
            return checkBreakOrContinueStatement(node);
          case 207:
            return checkReturnStatement(node);
          case 208:
            return checkWithStatement(node);
          case 209:
            return checkSwitchStatement(node);
          case 210:
            return checkLabeledStatement(node);
          case 211:
            return checkThrowStatement(node);
          case 212:
            return checkTryStatement(node);
          case 214:
            return checkVariableDeclaration(node);
          case 166:
            return checkBindingElement(node);
          case 217:
            return checkClassDeclaration(node);
          case 218:
            return checkInterfaceDeclaration(node);
          case 219:
            return checkTypeAliasDeclaration(node);
          case 220:
            return checkEnumDeclaration(node);
          case 221:
            return checkModuleDeclaration(node);
          case 225:
            return checkImportDeclaration(node);
          case 224:
            return checkImportEqualsDeclaration(node);
          case 231:
            return checkExportDeclaration(node);
          case 230:
            return checkExportAssignment(node);
          case 197:
            checkGrammarStatementInAmbientContext(node);
            return;
          case 213:
            checkGrammarStatementInAmbientContext(node);
            return;
          case 234:
            return checkMissingDeclaration(node);
        }
      }
      function checkNodeDeferred(node) {
        if (deferredNodes) {
          deferredNodes.push(node);
        }
      }
      function checkDeferredNodes() {
        for (var _i = 0,
            deferredNodes_1 = deferredNodes; _i < deferredNodes_1.length; _i++) {
          var node = deferredNodes_1[_i];
          switch (node.kind) {
            case 176:
            case 177:
            case 144:
            case 143:
              checkFunctionExpressionOrObjectLiteralMethodDeferred(node);
              break;
            case 146:
            case 147:
              checkAccessorDeferred(node);
              break;
            case 189:
              checkClassExpressionDeferred(node);
              break;
          }
        }
      }
      function checkSourceFile(node) {
        var start = new Date().getTime();
        checkSourceFileWorker(node);
        ts.checkTime += new Date().getTime() - start;
      }
      function checkSourceFileWorker(node) {
        var links = getNodeLinks(node);
        if (!(links.flags & 1)) {
          if (compilerOptions.skipDefaultLibCheck) {
            if (node.hasNoDefaultLib) {
              return;
            }
          }
          checkGrammarSourceFile(node);
          potentialThisCollisions.length = 0;
          deferredNodes = [];
          ts.forEach(node.statements, checkSourceElement);
          checkDeferredNodes();
          deferredNodes = undefined;
          if (ts.isExternalOrCommonJsModule(node)) {
            checkExternalModuleExports(node);
          }
          if (potentialThisCollisions.length) {
            ts.forEach(potentialThisCollisions, checkIfThisIsCapturedInEnclosingScope);
            potentialThisCollisions.length = 0;
          }
          links.flags |= 1;
        }
      }
      function getDiagnostics(sourceFile, ct) {
        try {
          cancellationToken = ct;
          return getDiagnosticsWorker(sourceFile);
        } finally {
          cancellationToken = undefined;
        }
      }
      function getDiagnosticsWorker(sourceFile) {
        throwIfNonDiagnosticsProducing();
        if (sourceFile) {
          checkSourceFile(sourceFile);
          return diagnostics.getDiagnostics(sourceFile.fileName);
        }
        ts.forEach(host.getSourceFiles(), checkSourceFile);
        return diagnostics.getDiagnostics();
      }
      function getGlobalDiagnostics() {
        throwIfNonDiagnosticsProducing();
        return diagnostics.getGlobalDiagnostics();
      }
      function throwIfNonDiagnosticsProducing() {
        if (!produceDiagnostics) {
          throw new Error("Trying to get diagnostics from a type checker that does not produce them.");
        }
      }
      function isInsideWithStatementBody(node) {
        if (node) {
          while (node.parent) {
            if (node.parent.kind === 208 && node.parent.statement === node) {
              return true;
            }
            node = node.parent;
          }
        }
        return false;
      }
      function getSymbolsInScope(location, meaning) {
        var symbols = {};
        var memberFlags = 0;
        if (isInsideWithStatementBody(location)) {
          return [];
        }
        populateSymbols();
        return symbolsToArray(symbols);
        function populateSymbols() {
          while (location) {
            if (location.locals && !isGlobalSourceFile(location)) {
              copySymbols(location.locals, meaning);
            }
            switch (location.kind) {
              case 251:
                if (!ts.isExternalOrCommonJsModule(location)) {
                  break;
                }
              case 221:
                copySymbols(getSymbolOfNode(location).exports, meaning & 8914931);
                break;
              case 220:
                copySymbols(getSymbolOfNode(location).exports, meaning & 8);
                break;
              case 189:
                var className = location.name;
                if (className) {
                  copySymbol(location.symbol, meaning);
                }
              case 217:
              case 218:
                if (!(memberFlags & 64)) {
                  copySymbols(getSymbolOfNode(location).members, meaning & 793056);
                }
                break;
              case 176:
                var funcName = location.name;
                if (funcName) {
                  copySymbol(location.symbol, meaning);
                }
                break;
            }
            if (ts.introducesArgumentsExoticObject(location)) {
              copySymbol(argumentsSymbol, meaning);
            }
            memberFlags = location.flags;
            location = location.parent;
          }
          copySymbols(globals, meaning);
        }
        function copySymbol(symbol, meaning) {
          if (symbol.flags & meaning) {
            var id = symbol.name;
            if (!ts.hasProperty(symbols, id)) {
              symbols[id] = symbol;
            }
          }
        }
        function copySymbols(source, meaning) {
          if (meaning) {
            for (var id in source) {
              var symbol = source[id];
              copySymbol(symbol, meaning);
            }
          }
        }
      }
      function isTypeDeclarationName(name) {
        return name.kind === 69 && isTypeDeclaration(name.parent) && name.parent.name === name;
      }
      function isTypeDeclaration(node) {
        switch (node.kind) {
          case 138:
          case 217:
          case 218:
          case 219:
          case 220:
            return true;
        }
      }
      function isTypeReferenceIdentifier(entityName) {
        var node = entityName;
        while (node.parent && node.parent.kind === 136) {
          node = node.parent;
        }
        return node.parent && node.parent.kind === 152;
      }
      function isHeritageClauseElementIdentifier(entityName) {
        var node = entityName;
        while (node.parent && node.parent.kind === 169) {
          node = node.parent;
        }
        return node.parent && node.parent.kind === 191;
      }
      function getLeftSideOfImportEqualsOrExportAssignment(nodeOnRightSide) {
        while (nodeOnRightSide.parent.kind === 136) {
          nodeOnRightSide = nodeOnRightSide.parent;
        }
        if (nodeOnRightSide.parent.kind === 224) {
          return nodeOnRightSide.parent.moduleReference === nodeOnRightSide && nodeOnRightSide.parent;
        }
        if (nodeOnRightSide.parent.kind === 230) {
          return nodeOnRightSide.parent.expression === nodeOnRightSide && nodeOnRightSide.parent;
        }
        return undefined;
      }
      function isInRightSideOfImportOrExportAssignment(node) {
        return getLeftSideOfImportEqualsOrExportAssignment(node) !== undefined;
      }
      function getSymbolOfEntityNameOrPropertyAccessExpression(entityName) {
        if (ts.isDeclarationName(entityName)) {
          return getSymbolOfNode(entityName.parent);
        }
        if (ts.isInJavaScriptFile(entityName) && entityName.parent.kind === 169) {
          var specialPropertyAssignmentKind = ts.getSpecialPropertyAssignmentKind(entityName.parent.parent);
          switch (specialPropertyAssignmentKind) {
            case 1:
            case 3:
              return getSymbolOfNode(entityName.parent);
            case 4:
            case 2:
              return getSymbolOfNode(entityName.parent.parent);
            default:
          }
        }
        if (entityName.parent.kind === 230) {
          return resolveEntityName(entityName, 107455 | 793056 | 1536 | 8388608);
        }
        if (entityName.kind !== 169) {
          if (isInRightSideOfImportOrExportAssignment(entityName)) {
            return getSymbolOfPartOfRightHandSideOfImportEquals(entityName);
          }
        }
        if (ts.isRightSideOfQualifiedNameOrPropertyAccess(entityName)) {
          entityName = entityName.parent;
        }
        if (isHeritageClauseElementIdentifier(entityName)) {
          var meaning = 0;
          if (entityName.parent.kind === 191) {
            meaning = 793056;
            if (ts.isExpressionWithTypeArgumentsInClassExtendsClause(entityName.parent)) {
              meaning |= 107455;
            }
          } else {
            meaning = 1536;
          }
          meaning |= 8388608;
          return resolveEntityName(entityName, meaning);
        } else if ((entityName.parent.kind === 238) || (entityName.parent.kind === 237) || (entityName.parent.kind === 240)) {
          return getJsxElementTagSymbol(entityName.parent);
        } else if (ts.isExpression(entityName)) {
          if (ts.nodeIsMissing(entityName)) {
            return undefined;
          }
          if (entityName.kind === 69) {
            var meaning = 107455 | 8388608;
            return resolveEntityName(entityName, meaning);
          } else if (entityName.kind === 169) {
            var symbol = getNodeLinks(entityName).resolvedSymbol;
            if (!symbol) {
              checkPropertyAccessExpression(entityName);
            }
            return getNodeLinks(entityName).resolvedSymbol;
          } else if (entityName.kind === 136) {
            var symbol = getNodeLinks(entityName).resolvedSymbol;
            if (!symbol) {
              checkQualifiedName(entityName);
            }
            return getNodeLinks(entityName).resolvedSymbol;
          }
        } else if (isTypeReferenceIdentifier(entityName)) {
          var meaning = entityName.parent.kind === 152 ? 793056 : 1536;
          meaning |= 8388608;
          return resolveEntityName(entityName, meaning);
        } else if (entityName.parent.kind === 241) {
          return getJsxAttributePropertySymbol(entityName.parent);
        }
        if (entityName.parent.kind === 151) {
          return resolveEntityName(entityName, 1);
        }
        return undefined;
      }
      function getSymbolAtLocation(node) {
        if (isInsideWithStatementBody(node)) {
          return undefined;
        }
        if (ts.isDeclarationName(node)) {
          return getSymbolOfNode(node.parent);
        }
        if (node.kind === 69) {
          if (isInRightSideOfImportOrExportAssignment(node)) {
            return node.parent.kind === 230 ? getSymbolOfEntityNameOrPropertyAccessExpression(node) : getSymbolOfPartOfRightHandSideOfImportEquals(node);
          } else if (node.parent.kind === 166 && node.parent.parent.kind === 164 && node === node.parent.propertyName) {
            var typeOfPattern = getTypeOfNode(node.parent.parent);
            var propertyDeclaration = typeOfPattern && getPropertyOfType(typeOfPattern, node.text);
            if (propertyDeclaration) {
              return propertyDeclaration;
            }
          }
        }
        switch (node.kind) {
          case 69:
          case 169:
          case 136:
            return getSymbolOfEntityNameOrPropertyAccessExpression(node);
          case 97:
          case 95:
            var type = ts.isExpression(node) ? checkExpression(node) : getTypeFromTypeNode(node);
            return type.symbol;
          case 162:
            return getTypeFromTypeNode(node).symbol;
          case 121:
            var constructorDeclaration = node.parent;
            if (constructorDeclaration && constructorDeclaration.kind === 145) {
              return constructorDeclaration.parent.symbol;
            }
            return undefined;
          case 9:
            if ((ts.isExternalModuleImportEqualsDeclaration(node.parent.parent) && ts.getExternalModuleImportEqualsDeclarationExpression(node.parent.parent) === node) || ((node.parent.kind === 225 || node.parent.kind === 231) && node.parent.moduleSpecifier === node)) {
              return resolveExternalModuleName(node, node);
            }
          case 8:
            if (node.parent.kind === 170 && node.parent.argumentExpression === node) {
              var objectType = checkExpression(node.parent.expression);
              if (objectType === unknownType)
                return undefined;
              var apparentType = getApparentType(objectType);
              if (apparentType === unknownType)
                return undefined;
              return getPropertyOfType(apparentType, node.text);
            }
            break;
        }
        return undefined;
      }
      function getShorthandAssignmentValueSymbol(location) {
        if (location && location.kind === 249) {
          return resolveEntityName(location.name, 107455 | 8388608);
        }
        return undefined;
      }
      function getExportSpecifierLocalTargetSymbol(node) {
        return node.parent.parent.moduleSpecifier ? getExternalModuleMember(node.parent.parent, node) : resolveEntityName(node.propertyName || node.name, 107455 | 793056 | 1536 | 8388608);
      }
      function getTypeOfNode(node) {
        if (isInsideWithStatementBody(node)) {
          return unknownType;
        }
        if (ts.isTypeNode(node)) {
          return getTypeFromTypeNode(node);
        }
        if (ts.isExpression(node)) {
          return getTypeOfExpression(node);
        }
        if (ts.isExpressionWithTypeArgumentsInClassExtendsClause(node)) {
          return getBaseTypes(getDeclaredTypeOfSymbol(getSymbolOfNode(node.parent.parent)))[0];
        }
        if (isTypeDeclaration(node)) {
          var symbol = getSymbolOfNode(node);
          return getDeclaredTypeOfSymbol(symbol);
        }
        if (isTypeDeclarationName(node)) {
          var symbol = getSymbolAtLocation(node);
          return symbol && getDeclaredTypeOfSymbol(symbol);
        }
        if (ts.isDeclaration(node)) {
          var symbol = getSymbolOfNode(node);
          return getTypeOfSymbol(symbol);
        }
        if (ts.isDeclarationName(node)) {
          var symbol = getSymbolAtLocation(node);
          return symbol && getTypeOfSymbol(symbol);
        }
        if (ts.isBindingPattern(node)) {
          return getTypeForVariableLikeDeclaration(node.parent);
        }
        if (isInRightSideOfImportOrExportAssignment(node)) {
          var symbol = getSymbolAtLocation(node);
          var declaredType = symbol && getDeclaredTypeOfSymbol(symbol);
          return declaredType !== unknownType ? declaredType : getTypeOfSymbol(symbol);
        }
        return unknownType;
      }
      function getTypeOfExpression(expr) {
        if (ts.isRightSideOfQualifiedNameOrPropertyAccess(expr)) {
          expr = expr.parent;
        }
        return checkExpression(expr);
      }
      function getParentTypeOfClassElement(node) {
        var classSymbol = getSymbolOfNode(node.parent);
        return node.flags & 64 ? getTypeOfSymbol(classSymbol) : getDeclaredTypeOfSymbol(classSymbol);
      }
      function getAugmentedPropertiesOfType(type) {
        type = getApparentType(type);
        var propsByName = createSymbolTable(getPropertiesOfType(type));
        if (getSignaturesOfType(type, 0).length || getSignaturesOfType(type, 1).length) {
          ts.forEach(getPropertiesOfType(globalFunctionType), function(p) {
            if (!ts.hasProperty(propsByName, p.name)) {
              propsByName[p.name] = p;
            }
          });
        }
        return getNamedMembers(propsByName);
      }
      function getRootSymbols(symbol) {
        if (symbol.flags & 268435456) {
          var symbols_3 = [];
          var name_18 = symbol.name;
          ts.forEach(getSymbolLinks(symbol).containingType.types, function(t) {
            var symbol = getPropertyOfType(t, name_18);
            if (symbol) {
              symbols_3.push(symbol);
            }
          });
          return symbols_3;
        } else if (symbol.flags & 67108864) {
          var target = getSymbolLinks(symbol).target;
          if (target) {
            return [target];
          }
        }
        return [symbol];
      }
      function isArgumentsLocalBinding(node) {
        return getReferencedValueSymbol(node) === argumentsSymbol;
      }
      function moduleExportsSomeValue(moduleReferenceExpression) {
        var moduleSymbol = resolveExternalModuleName(moduleReferenceExpression.parent, moduleReferenceExpression);
        if (!moduleSymbol) {
          return true;
        }
        var hasExportAssignment = hasExportAssignmentSymbol(moduleSymbol);
        moduleSymbol = resolveExternalModuleSymbol(moduleSymbol);
        var symbolLinks = getSymbolLinks(moduleSymbol);
        if (symbolLinks.exportsSomeValue === undefined) {
          symbolLinks.exportsSomeValue = hasExportAssignment ? !!(moduleSymbol.flags & 107455) : ts.forEachValue(getExportsOfModule(moduleSymbol), isValue);
        }
        return symbolLinks.exportsSomeValue;
        function isValue(s) {
          s = resolveSymbol(s);
          return s && !!(s.flags & 107455);
        }
      }
      function getReferencedExportContainer(node) {
        var symbol = getReferencedValueSymbol(node);
        if (symbol) {
          if (symbol.flags & 1048576) {
            var exportSymbol = getMergedSymbol(symbol.exportSymbol);
            if (exportSymbol.flags & 944) {
              return undefined;
            }
            symbol = exportSymbol;
          }
          var parentSymbol = getParentOfSymbol(symbol);
          if (parentSymbol) {
            if (parentSymbol.flags & 512 && parentSymbol.valueDeclaration.kind === 251) {
              return parentSymbol.valueDeclaration;
            }
            for (var n = node.parent; n; n = n.parent) {
              if ((n.kind === 221 || n.kind === 220) && getSymbolOfNode(n) === parentSymbol) {
                return n;
              }
            }
          }
        }
      }
      function getReferencedImportDeclaration(node) {
        var symbol = getReferencedValueSymbol(node);
        return symbol && symbol.flags & 8388608 ? getDeclarationOfAliasSymbol(symbol) : undefined;
      }
      function isSymbolOfDeclarationWithCollidingName(symbol) {
        if (symbol.flags & 418) {
          var links = getSymbolLinks(symbol);
          if (links.isDeclaratonWithCollidingName === undefined) {
            var container = ts.getEnclosingBlockScopeContainer(symbol.valueDeclaration);
            if (ts.isStatementWithLocals(container)) {
              var nodeLinks_1 = getNodeLinks(symbol.valueDeclaration);
              if (!!resolveName(container.parent, symbol.name, 107455, undefined, undefined)) {
                links.isDeclaratonWithCollidingName = true;
              } else if (nodeLinks_1.flags & 131072) {
                var isDeclaredInLoop = nodeLinks_1.flags & 262144;
                var inLoopInitializer = ts.isIterationStatement(container, false);
                var inLoopBodyBlock = container.kind === 195 && ts.isIterationStatement(container.parent, false);
                links.isDeclaratonWithCollidingName = !ts.isBlockScopedContainerTopLevel(container) && (!isDeclaredInLoop || (!inLoopInitializer && !inLoopBodyBlock));
              } else {
                links.isDeclaratonWithCollidingName = false;
              }
            }
          }
          return links.isDeclaratonWithCollidingName;
        }
        return false;
      }
      function getReferencedDeclarationWithCollidingName(node) {
        var symbol = getReferencedValueSymbol(node);
        return symbol && isSymbolOfDeclarationWithCollidingName(symbol) ? symbol.valueDeclaration : undefined;
      }
      function isDeclarationWithCollidingName(node) {
        return isSymbolOfDeclarationWithCollidingName(getSymbolOfNode(node));
      }
      function isValueAliasDeclaration(node) {
        switch (node.kind) {
          case 224:
          case 226:
          case 227:
          case 229:
          case 233:
            return isAliasResolvedToValue(getSymbolOfNode(node));
          case 231:
            var exportClause = node.exportClause;
            return exportClause && ts.forEach(exportClause.elements, isValueAliasDeclaration);
          case 230:
            return node.expression && node.expression.kind === 69 ? isAliasResolvedToValue(getSymbolOfNode(node)) : true;
        }
        return false;
      }
      function isTopLevelValueImportEqualsWithEntityName(node) {
        if (node.parent.kind !== 251 || !ts.isInternalModuleImportEqualsDeclaration(node)) {
          return false;
        }
        var isValue = isAliasResolvedToValue(getSymbolOfNode(node));
        return isValue && node.moduleReference && !ts.nodeIsMissing(node.moduleReference);
      }
      function isAliasResolvedToValue(symbol) {
        var target = resolveAlias(symbol);
        if (target === unknownSymbol && compilerOptions.isolatedModules) {
          return true;
        }
        return target !== unknownSymbol && target && target.flags & 107455 && (compilerOptions.preserveConstEnums || !isConstEnumOrConstEnumOnlyModule(target));
      }
      function isConstEnumOrConstEnumOnlyModule(s) {
        return isConstEnumSymbol(s) || s.constEnumOnlyModule;
      }
      function isReferencedAliasDeclaration(node, checkChildren) {
        if (ts.isAliasSymbolDeclaration(node)) {
          var symbol = getSymbolOfNode(node);
          if (getSymbolLinks(symbol).referenced) {
            return true;
          }
        }
        if (checkChildren) {
          return ts.forEachChild(node, function(node) {
            return isReferencedAliasDeclaration(node, checkChildren);
          });
        }
        return false;
      }
      function isImplementationOfOverload(node) {
        if (ts.nodeIsPresent(node.body)) {
          var symbol = getSymbolOfNode(node);
          var signaturesOfSymbol = getSignaturesOfSymbol(symbol);
          return signaturesOfSymbol.length > 1 || (signaturesOfSymbol.length === 1 && signaturesOfSymbol[0].declaration !== node);
        }
        return false;
      }
      function getNodeCheckFlags(node) {
        return getNodeLinks(node).flags;
      }
      function getEnumMemberValue(node) {
        computeEnumMemberValues(node.parent);
        return getNodeLinks(node).enumMemberValue;
      }
      function getConstantValue(node) {
        if (node.kind === 250) {
          return getEnumMemberValue(node);
        }
        var symbol = getNodeLinks(node).resolvedSymbol;
        if (symbol && (symbol.flags & 8)) {
          if (ts.isConstEnumDeclaration(symbol.valueDeclaration.parent)) {
            return getEnumMemberValue(symbol.valueDeclaration);
          }
        }
        return undefined;
      }
      function isFunctionType(type) {
        return type.flags & 80896 && getSignaturesOfType(type, 0).length > 0;
      }
      function getTypeReferenceSerializationKind(typeName) {
        var valueSymbol = resolveEntityName(typeName, 107455, true);
        var constructorType = valueSymbol ? getTypeOfSymbol(valueSymbol) : undefined;
        if (constructorType && isConstructorType(constructorType)) {
          return ts.TypeReferenceSerializationKind.TypeWithConstructSignatureAndValue;
        }
        var typeSymbol = resolveEntityName(typeName, 793056, true);
        if (!typeSymbol) {
          return ts.TypeReferenceSerializationKind.ObjectType;
        }
        var type = getDeclaredTypeOfSymbol(typeSymbol);
        if (type === unknownType) {
          return ts.TypeReferenceSerializationKind.Unknown;
        } else if (type.flags & 1) {
          return ts.TypeReferenceSerializationKind.ObjectType;
        } else if (allConstituentTypesHaveKind(type, 16)) {
          return ts.TypeReferenceSerializationKind.VoidType;
        } else if (allConstituentTypesHaveKind(type, 8)) {
          return ts.TypeReferenceSerializationKind.BooleanType;
        } else if (allConstituentTypesHaveKind(type, 132)) {
          return ts.TypeReferenceSerializationKind.NumberLikeType;
        } else if (allConstituentTypesHaveKind(type, 258)) {
          return ts.TypeReferenceSerializationKind.StringLikeType;
        } else if (allConstituentTypesHaveKind(type, 8192)) {
          return ts.TypeReferenceSerializationKind.ArrayLikeType;
        } else if (allConstituentTypesHaveKind(type, 16777216)) {
          return ts.TypeReferenceSerializationKind.ESSymbolType;
        } else if (isFunctionType(type)) {
          return ts.TypeReferenceSerializationKind.TypeWithCallSignature;
        } else if (isArrayType(type)) {
          return ts.TypeReferenceSerializationKind.ArrayLikeType;
        } else {
          return ts.TypeReferenceSerializationKind.ObjectType;
        }
      }
      function writeTypeOfDeclaration(declaration, enclosingDeclaration, flags, writer) {
        var symbol = getSymbolOfNode(declaration);
        var type = symbol && !(symbol.flags & (2048 | 131072)) ? getTypeOfSymbol(symbol) : unknownType;
        getSymbolDisplayBuilder().buildTypeDisplay(type, writer, enclosingDeclaration, flags);
      }
      function writeReturnTypeOfSignatureDeclaration(signatureDeclaration, enclosingDeclaration, flags, writer) {
        var signature = getSignatureFromDeclaration(signatureDeclaration);
        getSymbolDisplayBuilder().buildTypeDisplay(getReturnTypeOfSignature(signature), writer, enclosingDeclaration, flags);
      }
      function writeTypeOfExpression(expr, enclosingDeclaration, flags, writer) {
        var type = getTypeOfExpression(expr);
        getSymbolDisplayBuilder().buildTypeDisplay(type, writer, enclosingDeclaration, flags);
      }
      function hasGlobalName(name) {
        return ts.hasProperty(globals, name);
      }
      function getReferencedValueSymbol(reference) {
        return getNodeLinks(reference).resolvedSymbol || resolveName(reference, reference.text, 107455 | 1048576 | 8388608, undefined, undefined);
      }
      function getReferencedValueDeclaration(reference) {
        ts.Debug.assert(!ts.nodeIsSynthesized(reference));
        var symbol = getReferencedValueSymbol(reference);
        return symbol && getExportSymbolOfValueSymbolIfExported(symbol).valueDeclaration;
      }
      function createResolver() {
        return {
          getReferencedExportContainer: getReferencedExportContainer,
          getReferencedImportDeclaration: getReferencedImportDeclaration,
          getReferencedDeclarationWithCollidingName: getReferencedDeclarationWithCollidingName,
          isDeclarationWithCollidingName: isDeclarationWithCollidingName,
          isValueAliasDeclaration: isValueAliasDeclaration,
          hasGlobalName: hasGlobalName,
          isReferencedAliasDeclaration: isReferencedAliasDeclaration,
          getNodeCheckFlags: getNodeCheckFlags,
          isTopLevelValueImportEqualsWithEntityName: isTopLevelValueImportEqualsWithEntityName,
          isDeclarationVisible: isDeclarationVisible,
          isImplementationOfOverload: isImplementationOfOverload,
          writeTypeOfDeclaration: writeTypeOfDeclaration,
          writeReturnTypeOfSignatureDeclaration: writeReturnTypeOfSignatureDeclaration,
          writeTypeOfExpression: writeTypeOfExpression,
          isSymbolAccessible: isSymbolAccessible,
          isEntityNameVisible: isEntityNameVisible,
          getConstantValue: getConstantValue,
          collectLinkedAliases: collectLinkedAliases,
          getReferencedValueDeclaration: getReferencedValueDeclaration,
          getTypeReferenceSerializationKind: getTypeReferenceSerializationKind,
          isOptionalParameter: isOptionalParameter,
          moduleExportsSomeValue: moduleExportsSomeValue,
          isArgumentsLocalBinding: isArgumentsLocalBinding,
          getExternalModuleFileFromDeclaration: getExternalModuleFileFromDeclaration
        };
      }
      function getExternalModuleFileFromDeclaration(declaration) {
        var specifier = ts.getExternalModuleName(declaration);
        var moduleSymbol = resolveExternalModuleNameWorker(specifier, specifier, undefined);
        if (!moduleSymbol) {
          return undefined;
        }
        return ts.getDeclarationOfKind(moduleSymbol, 251);
      }
      function initializeTypeChecker() {
        ts.forEach(host.getSourceFiles(), function(file) {
          ts.bindSourceFile(file, compilerOptions);
        });
        var augmentations;
        ts.forEach(host.getSourceFiles(), function(file) {
          if (!ts.isExternalOrCommonJsModule(file)) {
            mergeSymbolTable(globals, file.locals);
          }
          if (file.moduleAugmentations.length) {
            (augmentations || (augmentations = [])).push(file.moduleAugmentations);
          }
        });
        if (augmentations) {
          for (var _i = 0,
              augmentations_1 = augmentations; _i < augmentations_1.length; _i++) {
            var list = augmentations_1[_i];
            for (var _a = 0,
                list_2 = list; _a < list_2.length; _a++) {
              var augmentation = list_2[_a];
              mergeModuleAugmentation(augmentation);
            }
          }
        }
        addToSymbolTable(globals, builtinGlobals, ts.Diagnostics.Declaration_name_conflicts_with_built_in_global_identifier_0);
        getSymbolLinks(undefinedSymbol).type = undefinedType;
        getSymbolLinks(argumentsSymbol).type = getGlobalType("IArguments");
        getSymbolLinks(unknownSymbol).type = unknownType;
        globalArrayType = getGlobalType("Array", 1);
        globalObjectType = getGlobalType("Object");
        globalFunctionType = getGlobalType("Function");
        globalStringType = getGlobalType("String");
        globalNumberType = getGlobalType("Number");
        globalBooleanType = getGlobalType("Boolean");
        globalRegExpType = getGlobalType("RegExp");
        jsxElementType = getExportedTypeFromNamespace("JSX", JsxNames.Element);
        getGlobalClassDecoratorType = ts.memoize(function() {
          return getGlobalType("ClassDecorator");
        });
        getGlobalPropertyDecoratorType = ts.memoize(function() {
          return getGlobalType("PropertyDecorator");
        });
        getGlobalMethodDecoratorType = ts.memoize(function() {
          return getGlobalType("MethodDecorator");
        });
        getGlobalParameterDecoratorType = ts.memoize(function() {
          return getGlobalType("ParameterDecorator");
        });
        getGlobalTypedPropertyDescriptorType = ts.memoize(function() {
          return getGlobalType("TypedPropertyDescriptor", 1);
        });
        getGlobalPromiseType = ts.memoize(function() {
          return getGlobalType("Promise", 1);
        });
        tryGetGlobalPromiseType = ts.memoize(function() {
          return getGlobalSymbol("Promise", 793056, undefined) && getGlobalPromiseType();
        });
        getGlobalPromiseLikeType = ts.memoize(function() {
          return getGlobalType("PromiseLike", 1);
        });
        getInstantiatedGlobalPromiseLikeType = ts.memoize(createInstantiatedPromiseLikeType);
        getGlobalPromiseConstructorSymbol = ts.memoize(function() {
          return getGlobalValueSymbol("Promise");
        });
        getGlobalPromiseConstructorLikeType = ts.memoize(function() {
          return getGlobalType("PromiseConstructorLike");
        });
        getGlobalThenableType = ts.memoize(createThenableType);
        if (languageVersion >= 2) {
          globalTemplateStringsArrayType = getGlobalType("TemplateStringsArray");
          globalESSymbolType = getGlobalType("Symbol");
          globalESSymbolConstructorSymbol = getGlobalValueSymbol("Symbol");
          globalIterableType = getGlobalType("Iterable", 1);
          globalIteratorType = getGlobalType("Iterator", 1);
          globalIterableIteratorType = getGlobalType("IterableIterator", 1);
        } else {
          globalTemplateStringsArrayType = unknownType;
          globalESSymbolType = createAnonymousType(undefined, emptySymbols, emptyArray, emptyArray, undefined, undefined);
          globalESSymbolConstructorSymbol = undefined;
          globalIterableType = emptyGenericType;
          globalIteratorType = emptyGenericType;
          globalIterableIteratorType = emptyGenericType;
        }
        anyArrayType = createArrayType(anyType);
      }
      function createInstantiatedPromiseLikeType() {
        var promiseLikeType = getGlobalPromiseLikeType();
        if (promiseLikeType !== emptyGenericType) {
          return createTypeReference(promiseLikeType, [anyType]);
        }
        return emptyObjectType;
      }
      function createThenableType() {
        var thenPropertySymbol = createSymbol(67108864 | 4, "then");
        getSymbolLinks(thenPropertySymbol).type = globalFunctionType;
        var thenableType = createObjectType(65536);
        thenableType.properties = [thenPropertySymbol];
        thenableType.members = createSymbolTable(thenableType.properties);
        thenableType.callSignatures = [];
        thenableType.constructSignatures = [];
        return thenableType;
      }
      function checkGrammarDecorators(node) {
        if (!node.decorators) {
          return false;
        }
        if (!ts.nodeCanBeDecorated(node)) {
          if (node.kind === 144 && !ts.nodeIsPresent(node.body)) {
            return grammarErrorOnFirstToken(node, ts.Diagnostics.A_decorator_can_only_decorate_a_method_implementation_not_an_overload);
          } else {
            return grammarErrorOnFirstToken(node, ts.Diagnostics.Decorators_are_not_valid_here);
          }
        } else if (node.kind === 146 || node.kind === 147) {
          var accessors = ts.getAllAccessorDeclarations(node.parent.members, node);
          if (accessors.firstAccessor.decorators && node === accessors.secondAccessor) {
            return grammarErrorOnFirstToken(node, ts.Diagnostics.Decorators_cannot_be_applied_to_multiple_get_Slashset_accessors_of_the_same_name);
          }
        }
        return false;
      }
      function checkGrammarModifiers(node) {
        switch (node.kind) {
          case 146:
          case 147:
          case 145:
          case 142:
          case 141:
          case 144:
          case 143:
          case 150:
          case 221:
          case 225:
          case 224:
          case 231:
          case 230:
          case 139:
            break;
          case 216:
            if (node.modifiers && (node.modifiers.length > 1 || node.modifiers[0].kind !== 118) && node.parent.kind !== 222 && node.parent.kind !== 251) {
              return grammarErrorOnFirstToken(node, ts.Diagnostics.Modifiers_cannot_appear_here);
            }
            break;
          case 217:
          case 218:
          case 196:
          case 219:
            if (node.modifiers && node.parent.kind !== 222 && node.parent.kind !== 251) {
              return grammarErrorOnFirstToken(node, ts.Diagnostics.Modifiers_cannot_appear_here);
            }
            break;
          case 220:
            if (node.modifiers && (node.modifiers.length > 1 || node.modifiers[0].kind !== 74) && node.parent.kind !== 222 && node.parent.kind !== 251) {
              return grammarErrorOnFirstToken(node, ts.Diagnostics.Modifiers_cannot_appear_here);
            }
            break;
          default:
            return false;
        }
        if (!node.modifiers) {
          return;
        }
        var lastStatic,
            lastPrivate,
            lastProtected,
            lastDeclare,
            lastAsync;
        var flags = 0;
        for (var _i = 0,
            _a = node.modifiers; _i < _a.length; _i++) {
          var modifier = _a[_i];
          switch (modifier.kind) {
            case 74:
              if (node.kind !== 220 && node.parent.kind === 217) {
                return grammarErrorOnNode(node, ts.Diagnostics.A_class_member_cannot_have_the_0_keyword, ts.tokenToString(74));
              }
              break;
            case 112:
            case 111:
            case 110:
              var text = void 0;
              if (modifier.kind === 112) {
                text = "public";
              } else if (modifier.kind === 111) {
                text = "protected";
                lastProtected = modifier;
              } else {
                text = "private";
                lastPrivate = modifier;
              }
              if (flags & 56) {
                return grammarErrorOnNode(modifier, ts.Diagnostics.Accessibility_modifier_already_seen);
              } else if (flags & 64) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, text, "static");
              } else if (flags & 256) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, text, "async");
              } else if (node.parent.kind === 222 || node.parent.kind === 251) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_module_element, text);
              } else if (flags & 128) {
                if (modifier.kind === 110) {
                  return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_with_1_modifier, text, "abstract");
                } else {
                  return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, text, "abstract");
                }
              }
              flags |= ts.modifierToFlag(modifier.kind);
              break;
            case 113:
              if (flags & 64) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_already_seen, "static");
              } else if (flags & 256) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, "static", "async");
              } else if (node.parent.kind === 222 || node.parent.kind === 251) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_module_element, "static");
              } else if (node.kind === 139) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_parameter, "static");
              } else if (flags & 128) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "static", "abstract");
              }
              flags |= 64;
              lastStatic = modifier;
              break;
            case 82:
              if (flags & 2) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_already_seen, "export");
              } else if (flags & 4) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, "export", "declare");
              } else if (flags & 128) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, "export", "abstract");
              } else if (flags & 256) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, "export", "async");
              } else if (node.parent.kind === 217) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_class_element, "export");
              } else if (node.kind === 139) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_parameter, "export");
              }
              flags |= 2;
              break;
            case 122:
              if (flags & 4) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_already_seen, "declare");
              } else if (flags & 256) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_in_an_ambient_context, "async");
              } else if (node.parent.kind === 217) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_class_element, "declare");
              } else if (node.kind === 139) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_parameter, "declare");
              } else if (ts.isInAmbientContext(node.parent) && node.parent.kind === 222) {
                return grammarErrorOnNode(modifier, ts.Diagnostics.A_declare_modifier_cannot_be_used_in_an_already_ambient_context);
              }
              flags |= 4;
              lastDeclare = modifier;
              break;
            case 115:
              if (flags & 128) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_already_seen, "abstract");
              }
              if (node.kind !== 217) {
                if (node.kind !== 144) {
                  return grammarErrorOnNode(modifier, ts.Diagnostics.abstract_modifier_can_only_appear_on_a_class_or_method_declaration);
                }
                if (!(node.parent.kind === 217 && node.parent.flags & 128)) {
                  return grammarErrorOnNode(modifier, ts.Diagnostics.Abstract_methods_can_only_appear_within_an_abstract_class);
                }
                if (flags & 64) {
                  return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "static", "abstract");
                }
                if (flags & 16) {
                  return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "private", "abstract");
                }
              }
              flags |= 128;
              break;
            case 118:
              if (flags & 256) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_already_seen, "async");
              } else if (flags & 4 || ts.isInAmbientContext(node.parent)) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_in_an_ambient_context, "async");
              } else if (node.kind === 139) {
                return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_parameter, "async");
              }
              flags |= 256;
              lastAsync = modifier;
              break;
          }
        }
        if (node.kind === 145) {
          if (flags & 64) {
            return grammarErrorOnNode(lastStatic, ts.Diagnostics._0_modifier_cannot_appear_on_a_constructor_declaration, "static");
          }
          if (flags & 128) {
            return grammarErrorOnNode(lastStatic, ts.Diagnostics._0_modifier_cannot_appear_on_a_constructor_declaration, "abstract");
          } else if (flags & 32) {
            return grammarErrorOnNode(lastProtected, ts.Diagnostics._0_modifier_cannot_appear_on_a_constructor_declaration, "protected");
          } else if (flags & 16) {
            return grammarErrorOnNode(lastPrivate, ts.Diagnostics._0_modifier_cannot_appear_on_a_constructor_declaration, "private");
          } else if (flags & 256) {
            return grammarErrorOnNode(lastAsync, ts.Diagnostics._0_modifier_cannot_appear_on_a_constructor_declaration, "async");
          }
          return;
        } else if ((node.kind === 225 || node.kind === 224) && flags & 4) {
          return grammarErrorOnNode(lastDeclare, ts.Diagnostics.A_0_modifier_cannot_be_used_with_an_import_declaration, "declare");
        } else if (node.kind === 139 && (flags & 56) && ts.isBindingPattern(node.name)) {
          return grammarErrorOnNode(node, ts.Diagnostics.A_parameter_property_may_not_be_a_binding_pattern);
        }
        if (flags & 256) {
          return checkGrammarAsyncModifier(node, lastAsync);
        }
      }
      function checkGrammarAsyncModifier(node, asyncModifier) {
        if (languageVersion < 2) {
          return grammarErrorOnNode(asyncModifier, ts.Diagnostics.Async_functions_are_only_available_when_targeting_ECMAScript_6_and_higher);
        }
        switch (node.kind) {
          case 144:
          case 216:
          case 176:
          case 177:
            if (!node.asteriskToken) {
              return false;
            }
            break;
        }
        return grammarErrorOnNode(asyncModifier, ts.Diagnostics._0_modifier_cannot_be_used_here, "async");
      }
      function checkGrammarForDisallowedTrailingComma(list) {
        if (list && list.hasTrailingComma) {
          var start = list.end - ",".length;
          var end = list.end;
          var sourceFile = ts.getSourceFileOfNode(list[0]);
          return grammarErrorAtPos(sourceFile, start, end - start, ts.Diagnostics.Trailing_comma_not_allowed);
        }
      }
      function checkGrammarTypeParameterList(node, typeParameters, file) {
        if (checkGrammarForDisallowedTrailingComma(typeParameters)) {
          return true;
        }
        if (typeParameters && typeParameters.length === 0) {
          var start = typeParameters.pos - "<".length;
          var end = ts.skipTrivia(file.text, typeParameters.end) + ">".length;
          return grammarErrorAtPos(file, start, end - start, ts.Diagnostics.Type_parameter_list_cannot_be_empty);
        }
      }
      function checkGrammarParameterList(parameters) {
        if (checkGrammarForDisallowedTrailingComma(parameters)) {
          return true;
        }
        var seenOptionalParameter = false;
        var parameterCount = parameters.length;
        for (var i = 0; i < parameterCount; i++) {
          var parameter = parameters[i];
          if (parameter.dotDotDotToken) {
            if (i !== (parameterCount - 1)) {
              return grammarErrorOnNode(parameter.dotDotDotToken, ts.Diagnostics.A_rest_parameter_must_be_last_in_a_parameter_list);
            }
            if (ts.isBindingPattern(parameter.name)) {
              return grammarErrorOnNode(parameter.name, ts.Diagnostics.A_rest_element_cannot_contain_a_binding_pattern);
            }
            if (parameter.questionToken) {
              return grammarErrorOnNode(parameter.questionToken, ts.Diagnostics.A_rest_parameter_cannot_be_optional);
            }
            if (parameter.initializer) {
              return grammarErrorOnNode(parameter.name, ts.Diagnostics.A_rest_parameter_cannot_have_an_initializer);
            }
          } else if (parameter.questionToken) {
            seenOptionalParameter = true;
            if (parameter.initializer) {
              return grammarErrorOnNode(parameter.name, ts.Diagnostics.Parameter_cannot_have_question_mark_and_initializer);
            }
          } else if (seenOptionalParameter && !parameter.initializer) {
            return grammarErrorOnNode(parameter.name, ts.Diagnostics.A_required_parameter_cannot_follow_an_optional_parameter);
          }
        }
      }
      function checkGrammarFunctionLikeDeclaration(node) {
        var file = ts.getSourceFileOfNode(node);
        return checkGrammarDecorators(node) || checkGrammarModifiers(node) || checkGrammarTypeParameterList(node, node.typeParameters, file) || checkGrammarParameterList(node.parameters) || checkGrammarArrowFunction(node, file);
      }
      function checkGrammarArrowFunction(node, file) {
        if (node.kind === 177) {
          var arrowFunction = node;
          var startLine = ts.getLineAndCharacterOfPosition(file, arrowFunction.equalsGreaterThanToken.pos).line;
          var endLine = ts.getLineAndCharacterOfPosition(file, arrowFunction.equalsGreaterThanToken.end).line;
          if (startLine !== endLine) {
            return grammarErrorOnNode(arrowFunction.equalsGreaterThanToken, ts.Diagnostics.Line_terminator_not_permitted_before_arrow);
          }
        }
        return false;
      }
      function checkGrammarIndexSignatureParameters(node) {
        var parameter = node.parameters[0];
        if (node.parameters.length !== 1) {
          if (parameter) {
            return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_must_have_exactly_one_parameter);
          } else {
            return grammarErrorOnNode(node, ts.Diagnostics.An_index_signature_must_have_exactly_one_parameter);
          }
        }
        if (parameter.dotDotDotToken) {
          return grammarErrorOnNode(parameter.dotDotDotToken, ts.Diagnostics.An_index_signature_cannot_have_a_rest_parameter);
        }
        if (parameter.flags & 1022) {
          return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_parameter_cannot_have_an_accessibility_modifier);
        }
        if (parameter.questionToken) {
          return grammarErrorOnNode(parameter.questionToken, ts.Diagnostics.An_index_signature_parameter_cannot_have_a_question_mark);
        }
        if (parameter.initializer) {
          return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_parameter_cannot_have_an_initializer);
        }
        if (!parameter.type) {
          return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_parameter_must_have_a_type_annotation);
        }
        if (parameter.type.kind !== 130 && parameter.type.kind !== 128) {
          return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_parameter_type_must_be_string_or_number);
        }
        if (!node.type) {
          return grammarErrorOnNode(node, ts.Diagnostics.An_index_signature_must_have_a_type_annotation);
        }
      }
      function checkGrammarForIndexSignatureModifier(node) {
        if (node.flags & 1022) {
          grammarErrorOnFirstToken(node, ts.Diagnostics.Modifiers_not_permitted_on_index_signature_members);
        }
      }
      function checkGrammarIndexSignature(node) {
        return checkGrammarDecorators(node) || checkGrammarModifiers(node) || checkGrammarIndexSignatureParameters(node) || checkGrammarForIndexSignatureModifier(node);
      }
      function checkGrammarForAtLeastOneTypeArgument(node, typeArguments) {
        if (typeArguments && typeArguments.length === 0) {
          var sourceFile = ts.getSourceFileOfNode(node);
          var start = typeArguments.pos - "<".length;
          var end = ts.skipTrivia(sourceFile.text, typeArguments.end) + ">".length;
          return grammarErrorAtPos(sourceFile, start, end - start, ts.Diagnostics.Type_argument_list_cannot_be_empty);
        }
      }
      function checkGrammarTypeArguments(node, typeArguments) {
        return checkGrammarForDisallowedTrailingComma(typeArguments) || checkGrammarForAtLeastOneTypeArgument(node, typeArguments);
      }
      function checkGrammarForOmittedArgument(node, args) {
        if (args) {
          var sourceFile = ts.getSourceFileOfNode(node);
          for (var _i = 0,
              args_1 = args; _i < args_1.length; _i++) {
            var arg = args_1[_i];
            if (arg.kind === 190) {
              return grammarErrorAtPos(sourceFile, arg.pos, 0, ts.Diagnostics.Argument_expression_expected);
            }
          }
        }
      }
      function checkGrammarArguments(node, args) {
        return checkGrammarForDisallowedTrailingComma(args) || checkGrammarForOmittedArgument(node, args);
      }
      function checkGrammarHeritageClause(node) {
        var types = node.types;
        if (checkGrammarForDisallowedTrailingComma(types)) {
          return true;
        }
        if (types && types.length === 0) {
          var listType = ts.tokenToString(node.token);
          var sourceFile = ts.getSourceFileOfNode(node);
          return grammarErrorAtPos(sourceFile, types.pos, 0, ts.Diagnostics._0_list_cannot_be_empty, listType);
        }
      }
      function checkGrammarClassDeclarationHeritageClauses(node) {
        var seenExtendsClause = false;
        var seenImplementsClause = false;
        if (!checkGrammarDecorators(node) && !checkGrammarModifiers(node) && node.heritageClauses) {
          for (var _i = 0,
              _a = node.heritageClauses; _i < _a.length; _i++) {
            var heritageClause = _a[_i];
            if (heritageClause.token === 83) {
              if (seenExtendsClause) {
                return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.extends_clause_already_seen);
              }
              if (seenImplementsClause) {
                return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.extends_clause_must_precede_implements_clause);
              }
              if (heritageClause.types.length > 1) {
                return grammarErrorOnFirstToken(heritageClause.types[1], ts.Diagnostics.Classes_can_only_extend_a_single_class);
              }
              seenExtendsClause = true;
            } else {
              ts.Debug.assert(heritageClause.token === 106);
              if (seenImplementsClause) {
                return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.implements_clause_already_seen);
              }
              seenImplementsClause = true;
            }
            checkGrammarHeritageClause(heritageClause);
          }
        }
      }
      function checkGrammarInterfaceDeclaration(node) {
        var seenExtendsClause = false;
        if (node.heritageClauses) {
          for (var _i = 0,
              _a = node.heritageClauses; _i < _a.length; _i++) {
            var heritageClause = _a[_i];
            if (heritageClause.token === 83) {
              if (seenExtendsClause) {
                return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.extends_clause_already_seen);
              }
              seenExtendsClause = true;
            } else {
              ts.Debug.assert(heritageClause.token === 106);
              return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.Interface_declaration_cannot_have_implements_clause);
            }
            checkGrammarHeritageClause(heritageClause);
          }
        }
        return false;
      }
      function checkGrammarComputedPropertyName(node) {
        if (node.kind !== 137) {
          return false;
        }
        var computedPropertyName = node;
        if (computedPropertyName.expression.kind === 184 && computedPropertyName.expression.operatorToken.kind === 24) {
          return grammarErrorOnNode(computedPropertyName.expression, ts.Diagnostics.A_comma_expression_is_not_allowed_in_a_computed_property_name);
        }
      }
      function checkGrammarForGenerator(node) {
        if (node.asteriskToken) {
          ts.Debug.assert(node.kind === 216 || node.kind === 176 || node.kind === 144);
          if (ts.isInAmbientContext(node)) {
            return grammarErrorOnNode(node.asteriskToken, ts.Diagnostics.Generators_are_not_allowed_in_an_ambient_context);
          }
          if (!node.body) {
            return grammarErrorOnNode(node.asteriskToken, ts.Diagnostics.An_overload_signature_cannot_be_declared_as_a_generator);
          }
          if (languageVersion < 2) {
            return grammarErrorOnNode(node.asteriskToken, ts.Diagnostics.Generators_are_only_available_when_targeting_ECMAScript_6_or_higher);
          }
        }
      }
      function checkGrammarForInvalidQuestionMark(node, questionToken, message) {
        if (questionToken) {
          return grammarErrorOnNode(questionToken, message);
        }
      }
      function checkGrammarObjectLiteralExpression(node, inDestructuring) {
        var seen = {};
        var Property = 1;
        var GetAccessor = 2;
        var SetAccesor = 4;
        var GetOrSetAccessor = GetAccessor | SetAccesor;
        var _loop_1 = function(prop) {
          var name_19 = prop.name;
          if (prop.kind === 190 || name_19.kind === 137) {
            checkGrammarComputedPropertyName(name_19);
            return "continue";
          }
          if (prop.kind === 249 && !inDestructuring && prop.objectAssignmentInitializer) {
            return {value: grammarErrorOnNode(prop.equalsToken, ts.Diagnostics.can_only_be_used_in_an_object_literal_property_inside_a_destructuring_assignment)};
          }
          ts.forEach(prop.modifiers, function(mod) {
            if (mod.kind !== 118 || prop.kind !== 144) {
              grammarErrorOnNode(mod, ts.Diagnostics._0_modifier_cannot_be_used_here, ts.getTextOfNode(mod));
            }
          });
          var currentKind = void 0;
          if (prop.kind === 248 || prop.kind === 249) {
            checkGrammarForInvalidQuestionMark(prop, prop.questionToken, ts.Diagnostics.An_object_member_cannot_be_declared_optional);
            if (name_19.kind === 8) {
              checkGrammarNumericLiteral(name_19);
            }
            currentKind = Property;
          } else if (prop.kind === 144) {
            currentKind = Property;
          } else if (prop.kind === 146) {
            currentKind = GetAccessor;
          } else if (prop.kind === 147) {
            currentKind = SetAccesor;
          } else {
            ts.Debug.fail("Unexpected syntax kind:" + prop.kind);
          }
          if (!ts.hasProperty(seen, name_19.text)) {
            seen[name_19.text] = currentKind;
          } else {
            var existingKind = seen[name_19.text];
            if (currentKind === Property && existingKind === Property) {
              return "continue";
            } else if ((currentKind & GetOrSetAccessor) && (existingKind & GetOrSetAccessor)) {
              if (existingKind !== GetOrSetAccessor && currentKind !== existingKind) {
                seen[name_19.text] = currentKind | existingKind;
              } else {
                return {value: grammarErrorOnNode(name_19, ts.Diagnostics.An_object_literal_cannot_have_multiple_get_Slashset_accessors_with_the_same_name)};
              }
            } else {
              return {value: grammarErrorOnNode(name_19, ts.Diagnostics.An_object_literal_cannot_have_property_and_accessor_with_the_same_name)};
            }
          }
        };
        for (var _i = 0,
            _a = node.properties; _i < _a.length; _i++) {
          var prop = _a[_i];
          var state_2 = _loop_1(prop);
          if (typeof state_2 === "object")
            return state_2.value;
          if (state_2 === "continue")
            continue;
        }
      }
      function checkGrammarJsxElement(node) {
        var seen = {};
        for (var _i = 0,
            _a = node.attributes; _i < _a.length; _i++) {
          var attr = _a[_i];
          if (attr.kind === 242) {
            continue;
          }
          var jsxAttr = attr;
          var name_20 = jsxAttr.name;
          if (!ts.hasProperty(seen, name_20.text)) {
            seen[name_20.text] = true;
          } else {
            return grammarErrorOnNode(name_20, ts.Diagnostics.JSX_elements_cannot_have_multiple_attributes_with_the_same_name);
          }
          var initializer = jsxAttr.initializer;
          if (initializer && initializer.kind === 243 && !initializer.expression) {
            return grammarErrorOnNode(jsxAttr.initializer, ts.Diagnostics.JSX_attributes_must_only_be_assigned_a_non_empty_expression);
          }
        }
      }
      function checkGrammarForInOrForOfStatement(forInOrOfStatement) {
        if (checkGrammarStatementInAmbientContext(forInOrOfStatement)) {
          return true;
        }
        if (forInOrOfStatement.initializer.kind === 215) {
          var variableList = forInOrOfStatement.initializer;
          if (!checkGrammarVariableDeclarationList(variableList)) {
            var declarations = variableList.declarations;
            if (!declarations.length) {
              return false;
            }
            if (declarations.length > 1) {
              var diagnostic = forInOrOfStatement.kind === 203 ? ts.Diagnostics.Only_a_single_variable_declaration_is_allowed_in_a_for_in_statement : ts.Diagnostics.Only_a_single_variable_declaration_is_allowed_in_a_for_of_statement;
              return grammarErrorOnFirstToken(variableList.declarations[1], diagnostic);
            }
            var firstDeclaration = declarations[0];
            if (firstDeclaration.initializer) {
              var diagnostic = forInOrOfStatement.kind === 203 ? ts.Diagnostics.The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer : ts.Diagnostics.The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer;
              return grammarErrorOnNode(firstDeclaration.name, diagnostic);
            }
            if (firstDeclaration.type) {
              var diagnostic = forInOrOfStatement.kind === 203 ? ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_cannot_use_a_type_annotation : ts.Diagnostics.The_left_hand_side_of_a_for_of_statement_cannot_use_a_type_annotation;
              return grammarErrorOnNode(firstDeclaration, diagnostic);
            }
          }
        }
        return false;
      }
      function checkGrammarAccessor(accessor) {
        var kind = accessor.kind;
        if (languageVersion < 1) {
          return grammarErrorOnNode(accessor.name, ts.Diagnostics.Accessors_are_only_available_when_targeting_ECMAScript_5_and_higher);
        } else if (ts.isInAmbientContext(accessor)) {
          return grammarErrorOnNode(accessor.name, ts.Diagnostics.An_accessor_cannot_be_declared_in_an_ambient_context);
        } else if (accessor.body === undefined) {
          return grammarErrorAtPos(ts.getSourceFileOfNode(accessor), accessor.end - 1, ";".length, ts.Diagnostics._0_expected, "{");
        } else if (accessor.typeParameters) {
          return grammarErrorOnNode(accessor.name, ts.Diagnostics.An_accessor_cannot_have_type_parameters);
        } else if (kind === 146 && accessor.parameters.length) {
          return grammarErrorOnNode(accessor.name, ts.Diagnostics.A_get_accessor_cannot_have_parameters);
        } else if (kind === 147) {
          if (accessor.type) {
            return grammarErrorOnNode(accessor.name, ts.Diagnostics.A_set_accessor_cannot_have_a_return_type_annotation);
          } else if (accessor.parameters.length !== 1) {
            return grammarErrorOnNode(accessor.name, ts.Diagnostics.A_set_accessor_must_have_exactly_one_parameter);
          } else {
            var parameter = accessor.parameters[0];
            if (parameter.dotDotDotToken) {
              return grammarErrorOnNode(parameter.dotDotDotToken, ts.Diagnostics.A_set_accessor_cannot_have_rest_parameter);
            } else if (parameter.flags & 1022) {
              return grammarErrorOnNode(accessor.name, ts.Diagnostics.A_parameter_property_is_only_allowed_in_a_constructor_implementation);
            } else if (parameter.questionToken) {
              return grammarErrorOnNode(parameter.questionToken, ts.Diagnostics.A_set_accessor_cannot_have_an_optional_parameter);
            } else if (parameter.initializer) {
              return grammarErrorOnNode(accessor.name, ts.Diagnostics.A_set_accessor_parameter_cannot_have_an_initializer);
            }
          }
        }
      }
      function checkGrammarForNonSymbolComputedProperty(node, message) {
        if (ts.isDynamicName(node)) {
          return grammarErrorOnNode(node, message);
        }
      }
      function checkGrammarMethod(node) {
        if (checkGrammarDisallowedModifiersOnObjectLiteralExpressionMethod(node) || checkGrammarFunctionLikeDeclaration(node) || checkGrammarForGenerator(node)) {
          return true;
        }
        if (node.parent.kind === 168) {
          if (checkGrammarForInvalidQuestionMark(node, node.questionToken, ts.Diagnostics.A_class_member_cannot_be_declared_optional)) {
            return true;
          } else if (node.body === undefined) {
            return grammarErrorAtPos(ts.getSourceFileOfNode(node), node.end - 1, ";".length, ts.Diagnostics._0_expected, "{");
          }
        }
        if (ts.isClassLike(node.parent)) {
          if (checkGrammarForInvalidQuestionMark(node, node.questionToken, ts.Diagnostics.A_class_member_cannot_be_declared_optional)) {
            return true;
          }
          if (ts.isInAmbientContext(node)) {
            return checkGrammarForNonSymbolComputedProperty(node.name, ts.Diagnostics.A_computed_property_name_in_an_ambient_context_must_directly_refer_to_a_built_in_symbol);
          } else if (!node.body) {
            return checkGrammarForNonSymbolComputedProperty(node.name, ts.Diagnostics.A_computed_property_name_in_a_method_overload_must_directly_refer_to_a_built_in_symbol);
          }
        } else if (node.parent.kind === 218) {
          return checkGrammarForNonSymbolComputedProperty(node.name, ts.Diagnostics.A_computed_property_name_in_an_interface_must_directly_refer_to_a_built_in_symbol);
        } else if (node.parent.kind === 156) {
          return checkGrammarForNonSymbolComputedProperty(node.name, ts.Diagnostics.A_computed_property_name_in_a_type_literal_must_directly_refer_to_a_built_in_symbol);
        }
      }
      function checkGrammarBreakOrContinueStatement(node) {
        var current = node;
        while (current) {
          if (ts.isFunctionLike(current)) {
            return grammarErrorOnNode(node, ts.Diagnostics.Jump_target_cannot_cross_function_boundary);
          }
          switch (current.kind) {
            case 210:
              if (node.label && current.label.text === node.label.text) {
                var isMisplacedContinueLabel = node.kind === 205 && !ts.isIterationStatement(current.statement, true);
                if (isMisplacedContinueLabel) {
                  return grammarErrorOnNode(node, ts.Diagnostics.A_continue_statement_can_only_jump_to_a_label_of_an_enclosing_iteration_statement);
                }
                return false;
              }
              break;
            case 209:
              if (node.kind === 206 && !node.label) {
                return false;
              }
              break;
            default:
              if (ts.isIterationStatement(current, false) && !node.label) {
                return false;
              }
              break;
          }
          current = current.parent;
        }
        if (node.label) {
          var message = node.kind === 206 ? ts.Diagnostics.A_break_statement_can_only_jump_to_a_label_of_an_enclosing_statement : ts.Diagnostics.A_continue_statement_can_only_jump_to_a_label_of_an_enclosing_iteration_statement;
          return grammarErrorOnNode(node, message);
        } else {
          var message = node.kind === 206 ? ts.Diagnostics.A_break_statement_can_only_be_used_within_an_enclosing_iteration_or_switch_statement : ts.Diagnostics.A_continue_statement_can_only_be_used_within_an_enclosing_iteration_statement;
          return grammarErrorOnNode(node, message);
        }
      }
      function checkGrammarBindingElement(node) {
        if (node.dotDotDotToken) {
          var elements = node.parent.elements;
          if (node !== ts.lastOrUndefined(elements)) {
            return grammarErrorOnNode(node, ts.Diagnostics.A_rest_element_must_be_last_in_an_array_destructuring_pattern);
          }
          if (node.name.kind === 165 || node.name.kind === 164) {
            return grammarErrorOnNode(node.name, ts.Diagnostics.A_rest_element_cannot_contain_a_binding_pattern);
          }
          if (node.initializer) {
            return grammarErrorAtPos(ts.getSourceFileOfNode(node), node.initializer.pos - 1, 1, ts.Diagnostics.A_rest_element_cannot_have_an_initializer);
          }
        }
      }
      function checkGrammarVariableDeclaration(node) {
        if (node.parent.parent.kind !== 203 && node.parent.parent.kind !== 204) {
          if (ts.isInAmbientContext(node)) {
            if (node.initializer) {
              var equalsTokenLength = "=".length;
              return grammarErrorAtPos(ts.getSourceFileOfNode(node), node.initializer.pos - equalsTokenLength, equalsTokenLength, ts.Diagnostics.Initializers_are_not_allowed_in_ambient_contexts);
            }
          } else if (!node.initializer) {
            if (ts.isBindingPattern(node.name) && !ts.isBindingPattern(node.parent)) {
              return grammarErrorOnNode(node, ts.Diagnostics.A_destructuring_declaration_must_have_an_initializer);
            }
            if (ts.isConst(node)) {
              return grammarErrorOnNode(node, ts.Diagnostics.const_declarations_must_be_initialized);
            }
          }
        }
        var checkLetConstNames = (ts.isLet(node) || ts.isConst(node));
        return checkLetConstNames && checkGrammarNameInLetOrConstDeclarations(node.name);
      }
      function checkGrammarNameInLetOrConstDeclarations(name) {
        if (name.kind === 69) {
          if (name.originalKeywordKind === 108) {
            return grammarErrorOnNode(name, ts.Diagnostics.let_is_not_allowed_to_be_used_as_a_name_in_let_or_const_declarations);
          }
        } else {
          var elements = name.elements;
          for (var _i = 0,
              elements_2 = elements; _i < elements_2.length; _i++) {
            var element = elements_2[_i];
            if (element.kind !== 190) {
              checkGrammarNameInLetOrConstDeclarations(element.name);
            }
          }
        }
      }
      function checkGrammarVariableDeclarationList(declarationList) {
        var declarations = declarationList.declarations;
        if (checkGrammarForDisallowedTrailingComma(declarationList.declarations)) {
          return true;
        }
        if (!declarationList.declarations.length) {
          return grammarErrorAtPos(ts.getSourceFileOfNode(declarationList), declarations.pos, declarations.end - declarations.pos, ts.Diagnostics.Variable_declaration_list_cannot_be_empty);
        }
      }
      function allowLetAndConstDeclarations(parent) {
        switch (parent.kind) {
          case 199:
          case 200:
          case 201:
          case 208:
          case 202:
          case 203:
          case 204:
            return false;
          case 210:
            return allowLetAndConstDeclarations(parent.parent);
        }
        return true;
      }
      function checkGrammarForDisallowedLetOrConstStatement(node) {
        if (!allowLetAndConstDeclarations(node.parent)) {
          if (ts.isLet(node.declarationList)) {
            return grammarErrorOnNode(node, ts.Diagnostics.let_declarations_can_only_be_declared_inside_a_block);
          } else if (ts.isConst(node.declarationList)) {
            return grammarErrorOnNode(node, ts.Diagnostics.const_declarations_can_only_be_declared_inside_a_block);
          }
        }
      }
      function hasParseDiagnostics(sourceFile) {
        return sourceFile.parseDiagnostics.length > 0;
      }
      function grammarErrorOnFirstToken(node, message, arg0, arg1, arg2) {
        var sourceFile = ts.getSourceFileOfNode(node);
        if (!hasParseDiagnostics(sourceFile)) {
          var span = ts.getSpanOfTokenAtPosition(sourceFile, node.pos);
          diagnostics.add(ts.createFileDiagnostic(sourceFile, span.start, span.length, message, arg0, arg1, arg2));
          return true;
        }
      }
      function grammarErrorAtPos(sourceFile, start, length, message, arg0, arg1, arg2) {
        if (!hasParseDiagnostics(sourceFile)) {
          diagnostics.add(ts.createFileDiagnostic(sourceFile, start, length, message, arg0, arg1, arg2));
          return true;
        }
      }
      function grammarErrorOnNode(node, message, arg0, arg1, arg2) {
        var sourceFile = ts.getSourceFileOfNode(node);
        if (!hasParseDiagnostics(sourceFile)) {
          diagnostics.add(ts.createDiagnosticForNode(node, message, arg0, arg1, arg2));
          return true;
        }
      }
      function checkGrammarConstructorTypeParameters(node) {
        if (node.typeParameters) {
          return grammarErrorAtPos(ts.getSourceFileOfNode(node), node.typeParameters.pos, node.typeParameters.end - node.typeParameters.pos, ts.Diagnostics.Type_parameters_cannot_appear_on_a_constructor_declaration);
        }
      }
      function checkGrammarConstructorTypeAnnotation(node) {
        if (node.type) {
          return grammarErrorOnNode(node.type, ts.Diagnostics.Type_annotation_cannot_appear_on_a_constructor_declaration);
        }
      }
      function checkGrammarProperty(node) {
        if (ts.isClassLike(node.parent)) {
          if (checkGrammarForInvalidQuestionMark(node, node.questionToken, ts.Diagnostics.A_class_member_cannot_be_declared_optional) || checkGrammarForNonSymbolComputedProperty(node.name, ts.Diagnostics.A_computed_property_name_in_a_class_property_declaration_must_directly_refer_to_a_built_in_symbol)) {
            return true;
          }
        } else if (node.parent.kind === 218) {
          if (checkGrammarForNonSymbolComputedProperty(node.name, ts.Diagnostics.A_computed_property_name_in_an_interface_must_directly_refer_to_a_built_in_symbol)) {
            return true;
          }
          if (node.initializer) {
            return grammarErrorOnNode(node.initializer, ts.Diagnostics.An_interface_property_cannot_have_an_initializer);
          }
        } else if (node.parent.kind === 156) {
          if (checkGrammarForNonSymbolComputedProperty(node.name, ts.Diagnostics.A_computed_property_name_in_a_type_literal_must_directly_refer_to_a_built_in_symbol)) {
            return true;
          }
          if (node.initializer) {
            return grammarErrorOnNode(node.initializer, ts.Diagnostics.A_type_literal_property_cannot_have_an_initializer);
          }
        }
        if (ts.isInAmbientContext(node) && node.initializer) {
          return grammarErrorOnFirstToken(node.initializer, ts.Diagnostics.Initializers_are_not_allowed_in_ambient_contexts);
        }
      }
      function checkGrammarTopLevelElementForRequiredDeclareModifier(node) {
        if (node.kind === 218 || node.kind === 219 || node.kind === 225 || node.kind === 224 || node.kind === 231 || node.kind === 230 || (node.flags & 4) || (node.flags & (2 | 512))) {
          return false;
        }
        return grammarErrorOnFirstToken(node, ts.Diagnostics.A_declare_modifier_is_required_for_a_top_level_declaration_in_a_d_ts_file);
      }
      function checkGrammarTopLevelElementsForRequiredDeclareModifier(file) {
        for (var _i = 0,
            _a = file.statements; _i < _a.length; _i++) {
          var decl = _a[_i];
          if (ts.isDeclaration(decl) || decl.kind === 196) {
            if (checkGrammarTopLevelElementForRequiredDeclareModifier(decl)) {
              return true;
            }
          }
        }
      }
      function checkGrammarSourceFile(node) {
        return ts.isInAmbientContext(node) && checkGrammarTopLevelElementsForRequiredDeclareModifier(node);
      }
      function checkGrammarStatementInAmbientContext(node) {
        if (ts.isInAmbientContext(node)) {
          if (isAccessor(node.parent.kind)) {
            return getNodeLinks(node).hasReportedStatementInAmbientContext = true;
          }
          var links = getNodeLinks(node);
          if (!links.hasReportedStatementInAmbientContext && ts.isFunctionLike(node.parent)) {
            return getNodeLinks(node).hasReportedStatementInAmbientContext = grammarErrorOnFirstToken(node, ts.Diagnostics.An_implementation_cannot_be_declared_in_ambient_contexts);
          }
          if (node.parent.kind === 195 || node.parent.kind === 222 || node.parent.kind === 251) {
            var links_1 = getNodeLinks(node.parent);
            if (!links_1.hasReportedStatementInAmbientContext) {
              return links_1.hasReportedStatementInAmbientContext = grammarErrorOnFirstToken(node, ts.Diagnostics.Statements_are_not_allowed_in_ambient_contexts);
            }
          } else {}
        }
      }
      function checkGrammarNumericLiteral(node) {
        if (node.flags & 32768 && languageVersion >= 1) {
          return grammarErrorOnNode(node, ts.Diagnostics.Octal_literals_are_not_available_when_targeting_ECMAScript_5_and_higher);
        }
      }
      function grammarErrorAfterFirstToken(node, message, arg0, arg1, arg2) {
        var sourceFile = ts.getSourceFileOfNode(node);
        if (!hasParseDiagnostics(sourceFile)) {
          var span = ts.getSpanOfTokenAtPosition(sourceFile, node.pos);
          diagnostics.add(ts.createFileDiagnostic(sourceFile, ts.textSpanEnd(span), 0, message, arg0, arg1, arg2));
          return true;
        }
      }
      var _a;
    }
    ts.createTypeChecker = createTypeChecker;
  })(ts || (ts = {}));
  var ts;
  (function(ts) {
    var nullSourceMapWriter;
    var defaultLastEncodedSourceMapSpan = {
      emittedLine: 1,
      emittedColumn: 1,
      sourceLine: 1,
      sourceColumn: 1,
      sourceIndex: 0
    };
    function getNullSourceMapWriter() {
      if (nullSourceMapWriter === undefined) {
        nullSourceMapWriter = {
          getSourceMapData: function() {
            return undefined;
          },
          setSourceFile: function(sourceFile) {},
          emitStart: function(range) {},
          emitEnd: function(range, stopOverridingSpan) {},
          emitPos: function(pos) {},
          changeEmitSourcePos: function() {},
          getText: function() {
            return undefined;
          },
          getSourceMappingURL: function() {
            return undefined;
          },
          initialize: function(filePath, sourceMapFilePath, sourceFiles, isBundledEmit) {},
          reset: function() {}
        };
      }
      return nullSourceMapWriter;
    }
    ts.getNullSourceMapWriter = getNullSourceMapWriter;
    function createSourceMapWriter(host, writer) {
      var compilerOptions = host.getCompilerOptions();
      var currentSourceFile;
      var sourceMapDir;
      var stopOverridingSpan = false;
      var modifyLastSourcePos = false;
      var sourceMapSourceIndex;
      var lastRecordedSourceMapSpan;
      var lastEncodedSourceMapSpan;
      var lastEncodedNameIndex;
      var sourceMapData;
      return {
        getSourceMapData: function() {
          return sourceMapData;
        },
        setSourceFile: setSourceFile,
        emitPos: emitPos,
        emitStart: emitStart,
        emitEnd: emitEnd,
        changeEmitSourcePos: changeEmitSourcePos,
        getText: getText,
        getSourceMappingURL: getSourceMappingURL,
        initialize: initialize,
        reset: reset
      };
      function initialize(filePath, sourceMapFilePath, sourceFiles, isBundledEmit) {
        if (sourceMapData) {
          reset();
        }
        currentSourceFile = undefined;
        sourceMapSourceIndex = -1;
        lastRecordedSourceMapSpan = undefined;
        lastEncodedSourceMapSpan = defaultLastEncodedSourceMapSpan;
        lastEncodedNameIndex = 0;
        sourceMapData = {
          sourceMapFilePath: sourceMapFilePath,
          jsSourceMappingURL: !compilerOptions.inlineSourceMap ? ts.getBaseFileName(ts.normalizeSlashes(sourceMapFilePath)) : undefined,
          sourceMapFile: ts.getBaseFileName(ts.normalizeSlashes(filePath)),
          sourceMapSourceRoot: compilerOptions.sourceRoot || "",
          sourceMapSources: [],
          inputSourceFileNames: [],
          sourceMapNames: [],
          sourceMapMappings: "",
          sourceMapSourcesContent: compilerOptions.inlineSources ? [] : undefined,
          sourceMapDecodedMappings: []
        };
        sourceMapData.sourceMapSourceRoot = ts.normalizeSlashes(sourceMapData.sourceMapSourceRoot);
        if (sourceMapData.sourceMapSourceRoot.length && sourceMapData.sourceMapSourceRoot.charCodeAt(sourceMapData.sourceMapSourceRoot.length - 1) !== 47) {
          sourceMapData.sourceMapSourceRoot += ts.directorySeparator;
        }
        if (compilerOptions.mapRoot) {
          sourceMapDir = ts.normalizeSlashes(compilerOptions.mapRoot);
          if (!isBundledEmit) {
            ts.Debug.assert(sourceFiles.length === 1);
            sourceMapDir = ts.getDirectoryPath(ts.getSourceFilePathInNewDir(sourceFiles[0], host, sourceMapDir));
          }
          if (!ts.isRootedDiskPath(sourceMapDir) && !ts.isUrl(sourceMapDir)) {
            sourceMapDir = ts.combinePaths(host.getCommonSourceDirectory(), sourceMapDir);
            sourceMapData.jsSourceMappingURL = ts.getRelativePathToDirectoryOrUrl(ts.getDirectoryPath(ts.normalizePath(filePath)), ts.combinePaths(sourceMapDir, sourceMapData.jsSourceMappingURL), host.getCurrentDirectory(), host.getCanonicalFileName, true);
          } else {
            sourceMapData.jsSourceMappingURL = ts.combinePaths(sourceMapDir, sourceMapData.jsSourceMappingURL);
          }
        } else {
          sourceMapDir = ts.getDirectoryPath(ts.normalizePath(filePath));
        }
      }
      function reset() {
        currentSourceFile = undefined;
        sourceMapDir = undefined;
        sourceMapSourceIndex = undefined;
        lastRecordedSourceMapSpan = undefined;
        lastEncodedSourceMapSpan = undefined;
        lastEncodedNameIndex = undefined;
        sourceMapData = undefined;
      }
      function updateLastEncodedAndRecordedSpans() {
        if (modifyLastSourcePos) {
          modifyLastSourcePos = false;
          lastRecordedSourceMapSpan.emittedLine = lastEncodedSourceMapSpan.emittedLine;
          lastRecordedSourceMapSpan.emittedColumn = lastEncodedSourceMapSpan.emittedColumn;
          sourceMapData.sourceMapDecodedMappings.pop();
          lastEncodedSourceMapSpan = sourceMapData.sourceMapDecodedMappings.length ? sourceMapData.sourceMapDecodedMappings[sourceMapData.sourceMapDecodedMappings.length - 1] : defaultLastEncodedSourceMapSpan;
          var sourceMapMappings = sourceMapData.sourceMapMappings;
          var lenthToSet = sourceMapMappings.length - 1;
          for (; lenthToSet >= 0; lenthToSet--) {
            var currentChar = sourceMapMappings.charAt(lenthToSet);
            if (currentChar === ",") {
              break;
            }
            if (currentChar === ";" && lenthToSet !== 0 && sourceMapMappings.charAt(lenthToSet - 1) !== ";") {
              break;
            }
          }
          sourceMapData.sourceMapMappings = sourceMapMappings.substr(0, Math.max(0, lenthToSet));
        }
      }
      function encodeLastRecordedSourceMapSpan() {
        if (!lastRecordedSourceMapSpan || lastRecordedSourceMapSpan === lastEncodedSourceMapSpan) {
          return;
        }
        var prevEncodedEmittedColumn = lastEncodedSourceMapSpan.emittedColumn;
        if (lastEncodedSourceMapSpan.emittedLine === lastRecordedSourceMapSpan.emittedLine) {
          if (sourceMapData.sourceMapMappings) {
            sourceMapData.sourceMapMappings += ",";
          }
        } else {
          for (var encodedLine = lastEncodedSourceMapSpan.emittedLine; encodedLine < lastRecordedSourceMapSpan.emittedLine; encodedLine++) {
            sourceMapData.sourceMapMappings += ";";
          }
          prevEncodedEmittedColumn = 1;
        }
        sourceMapData.sourceMapMappings += base64VLQFormatEncode(lastRecordedSourceMapSpan.emittedColumn - prevEncodedEmittedColumn);
        sourceMapData.sourceMapMappings += base64VLQFormatEncode(lastRecordedSourceMapSpan.sourceIndex - lastEncodedSourceMapSpan.sourceIndex);
        sourceMapData.sourceMapMappings += base64VLQFormatEncode(lastRecordedSourceMapSpan.sourceLine - lastEncodedSourceMapSpan.sourceLine);
        sourceMapData.sourceMapMappings += base64VLQFormatEncode(lastRecordedSourceMapSpan.sourceColumn - lastEncodedSourceMapSpan.sourceColumn);
        if (lastRecordedSourceMapSpan.nameIndex >= 0) {
          ts.Debug.assert(false, "We do not support name index right now, Make sure to update updateLastEncodedAndRecordedSpans when we start using this");
          sourceMapData.sourceMapMappings += base64VLQFormatEncode(lastRecordedSourceMapSpan.nameIndex - lastEncodedNameIndex);
          lastEncodedNameIndex = lastRecordedSourceMapSpan.nameIndex;
        }
        lastEncodedSourceMapSpan = lastRecordedSourceMapSpan;
        sourceMapData.sourceMapDecodedMappings.push(lastEncodedSourceMapSpan);
      }
      function emitPos(pos) {
        if (pos === -1) {
          return;
        }
        var sourceLinePos = ts.getLineAndCharacterOfPosition(currentSourceFile, pos);
        sourceLinePos.line++;
        sourceLinePos.character++;
        var emittedLine = writer.getLine();
        var emittedColumn = writer.getColumn();
        if (!lastRecordedSourceMapSpan || lastRecordedSourceMapSpan.emittedLine !== emittedLine || lastRecordedSourceMapSpan.emittedColumn !== emittedColumn || (lastRecordedSourceMapSpan.sourceIndex === sourceMapSourceIndex && (lastRecordedSourceMapSpan.sourceLine > sourceLinePos.line || (lastRecordedSourceMapSpan.sourceLine === sourceLinePos.line && lastRecordedSourceMapSpan.sourceColumn > sourceLinePos.character)))) {
          encodeLastRecordedSourceMapSpan();
          lastRecordedSourceMapSpan = {
            emittedLine: emittedLine,
            emittedColumn: emittedColumn,
            sourceLine: sourceLinePos.line,
            sourceColumn: sourceLinePos.character,
            sourceIndex: sourceMapSourceIndex
          };
          stopOverridingSpan = false;
        } else if (!stopOverridingSpan) {
          lastRecordedSourceMapSpan.sourceLine = sourceLinePos.line;
          lastRecordedSourceMapSpan.sourceColumn = sourceLinePos.character;
          lastRecordedSourceMapSpan.sourceIndex = sourceMapSourceIndex;
        }
        updateLastEncodedAndRecordedSpans();
      }
      function getStartPos(range) {
        var rangeHasDecorators = !!range.decorators;
        return range.pos !== -1 ? ts.skipTrivia(currentSourceFile.text, rangeHasDecorators ? range.decorators.end : range.pos) : -1;
      }
      function emitStart(range) {
        emitPos(getStartPos(range));
      }
      function emitEnd(range, stopOverridingEnd) {
        emitPos(range.end);
        stopOverridingSpan = stopOverridingEnd;
      }
      function changeEmitSourcePos() {
        ts.Debug.assert(!modifyLastSourcePos);
        modifyLastSourcePos = true;
      }
      function setSourceFile(sourceFile) {
        currentSourceFile = sourceFile;
        var sourcesDirectoryPath = compilerOptions.sourceRoot ? host.getCommonSourceDirectory() : sourceMapDir;
        var source = ts.getRelativePathToDirectoryOrUrl(sourcesDirectoryPath, currentSourceFile.fileName, host.getCurrentDirectory(), host.getCanonicalFileName, true);
        sourceMapSourceIndex = ts.indexOf(sourceMapData.sourceMapSources, source);
        if (sourceMapSourceIndex === -1) {
          sourceMapSourceIndex = sourceMapData.sourceMapSources.length;
          sourceMapData.sourceMapSources.push(source);
          sourceMapData.inputSourceFileNames.push(sourceFile.fileName);
          if (compilerOptions.inlineSources) {
            sourceMapData.sourceMapSourcesContent.push(sourceFile.text);
          }
        }
      }
      function getText() {
        encodeLastRecordedSourceMapSpan();
        return ts.stringify({
          version: 3,
          file: sourceMapData.sourceMapFile,
          sourceRoot: sourceMapData.sourceMapSourceRoot,
          sources: sourceMapData.sourceMapSources,
          names: sourceMapData.sourceMapNames,
          mappings: sourceMapData.sourceMapMappings,
          sourcesContent: sourceMapData.sourceMapSourcesContent
        });
      }
      function getSourceMappingURL() {
        if (compilerOptions.inlineSourceMap) {
          var base64SourceMapText = ts.convertToBase64(getText());
          return sourceMapData.jsSourceMappingURL = "data:application/json;base64," + base64SourceMapText;
        } else {
          return sourceMapData.jsSourceMappingURL;
        }
      }
    }
    ts.createSourceMapWriter = createSourceMapWriter;
    var base64Chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
    function base64FormatEncode(inValue) {
      if (inValue < 64) {
        return base64Chars.charAt(inValue);
      }
      throw TypeError(inValue + ": not a 64 based value");
    }
    function base64VLQFormatEncode(inValue) {
      if (inValue < 0) {
        inValue = ((-inValue) << 1) + 1;
      } else {
        inValue = inValue << 1;
      }
      var encodedStr = "";
      do {
        var currentDigit = inValue & 31;
        inValue = inValue >> 5;
        if (inValue > 0) {
          currentDigit = currentDigit | 32;
        }
        encodedStr = encodedStr + base64FormatEncode(currentDigit);
      } while (inValue > 0);
      return encodedStr;
    }
  })(ts || (ts = {}));
  var ts;
  (function(ts) {
    function getDeclarationDiagnostics(host, resolver, targetSourceFile) {
      var declarationDiagnostics = ts.createDiagnosticCollection();
      ts.forEachExpectedEmitFile(host, getDeclarationDiagnosticsFromFile, targetSourceFile);
      return declarationDiagnostics.getDiagnostics(targetSourceFile ? targetSourceFile.fileName : undefined);
      function getDeclarationDiagnosticsFromFile(_a, sources, isBundledEmit) {
        var declarationFilePath = _a.declarationFilePath;
        emitDeclarations(host, resolver, declarationDiagnostics, declarationFilePath, sources, isBundledEmit);
      }
    }
    ts.getDeclarationDiagnostics = getDeclarationDiagnostics;
    function emitDeclarations(host, resolver, emitterDiagnostics, declarationFilePath, sourceFiles, isBundledEmit) {
      var newLine = host.getNewLine();
      var compilerOptions = host.getCompilerOptions();
      var write;
      var writeLine;
      var increaseIndent;
      var decreaseIndent;
      var writeTextOfNode;
      var writer = createAndSetNewTextWriterWithSymbolWriter();
      var enclosingDeclaration;
      var resultHasExternalModuleIndicator;
      var currentText;
      var currentLineMap;
      var currentIdentifiers;
      var isCurrentFileExternalModule;
      var reportedDeclarationError = false;
      var errorNameNode;
      var emitJsDocComments = compilerOptions.removeComments ? function(declaration) {} : writeJsDocComments;
      var emit = compilerOptions.stripInternal ? stripInternal : emitNode;
      var noDeclare;
      var moduleElementDeclarationEmitInfo = [];
      var asynchronousSubModuleDeclarationEmitInfo;
      var referencePathsOutput = "";
      var emittedReferencedFiles = [];
      var addedGlobalFileReference = false;
      var allSourcesModuleElementDeclarationEmitInfo = [];
      ts.forEach(sourceFiles, function(sourceFile) {
        if (ts.isSourceFileJavaScript(sourceFile)) {
          return;
        }
        if (!compilerOptions.noResolve) {
          ts.forEach(sourceFile.referencedFiles, function(fileReference) {
            var referencedFile = ts.tryResolveScriptReference(host, sourceFile, fileReference);
            if (referencedFile && !ts.contains(emittedReferencedFiles, referencedFile)) {
              if (writeReferencePath(referencedFile, !isBundledEmit && !addedGlobalFileReference)) {
                addedGlobalFileReference = true;
              }
              emittedReferencedFiles.push(referencedFile);
            }
          });
        }
        resultHasExternalModuleIndicator = false;
        if (!isBundledEmit || !ts.isExternalModule(sourceFile)) {
          noDeclare = false;
          emitSourceFile(sourceFile);
        } else if (ts.isExternalModule(sourceFile)) {
          noDeclare = true;
          write("declare module \"" + ts.getResolvedExternalModuleName(host, sourceFile) + "\" {");
          writeLine();
          increaseIndent();
          emitSourceFile(sourceFile);
          decreaseIndent();
          write("}");
          writeLine();
        }
        if (moduleElementDeclarationEmitInfo.length) {
          var oldWriter = writer;
          ts.forEach(moduleElementDeclarationEmitInfo, function(aliasEmitInfo) {
            if (aliasEmitInfo.isVisible && !aliasEmitInfo.asynchronousOutput) {
              ts.Debug.assert(aliasEmitInfo.node.kind === 225);
              createAndSetNewTextWriterWithSymbolWriter();
              ts.Debug.assert(aliasEmitInfo.indent === 0 || (aliasEmitInfo.indent === 1 && isBundledEmit));
              for (var i = 0; i < aliasEmitInfo.indent; i++) {
                increaseIndent();
              }
              writeImportDeclaration(aliasEmitInfo.node);
              aliasEmitInfo.asynchronousOutput = writer.getText();
              for (var i = 0; i < aliasEmitInfo.indent; i++) {
                decreaseIndent();
              }
            }
          });
          setWriter(oldWriter);
          allSourcesModuleElementDeclarationEmitInfo = allSourcesModuleElementDeclarationEmitInfo.concat(moduleElementDeclarationEmitInfo);
          moduleElementDeclarationEmitInfo = [];
        }
        if (!isBundledEmit && ts.isExternalModule(sourceFile) && sourceFile.moduleAugmentations.length && !resultHasExternalModuleIndicator) {
          write("export {};");
          writeLine();
        }
      });
      return {
        reportedDeclarationError: reportedDeclarationError,
        moduleElementDeclarationEmitInfo: allSourcesModuleElementDeclarationEmitInfo,
        synchronousDeclarationOutput: writer.getText(),
        referencePathsOutput: referencePathsOutput
      };
      function hasInternalAnnotation(range) {
        var comment = currentText.substring(range.pos, range.end);
        return comment.indexOf("@internal") >= 0;
      }
      function stripInternal(node) {
        if (node) {
          var leadingCommentRanges = ts.getLeadingCommentRanges(currentText, node.pos);
          if (ts.forEach(leadingCommentRanges, hasInternalAnnotation)) {
            return;
          }
          emitNode(node);
        }
      }
      function createAndSetNewTextWriterWithSymbolWriter() {
        var writer = ts.createTextWriter(newLine);
        writer.trackSymbol = trackSymbol;
        writer.reportInaccessibleThisError = reportInaccessibleThisError;
        writer.writeKeyword = writer.write;
        writer.writeOperator = writer.write;
        writer.writePunctuation = writer.write;
        writer.writeSpace = writer.write;
        writer.writeStringLiteral = writer.writeLiteral;
        writer.writeParameter = writer.write;
        writer.writeSymbol = writer.write;
        setWriter(writer);
        return writer;
      }
      function setWriter(newWriter) {
        writer = newWriter;
        write = newWriter.write;
        writeTextOfNode = newWriter.writeTextOfNode;
        writeLine = newWriter.writeLine;
        increaseIndent = newWriter.increaseIndent;
        decreaseIndent = newWriter.decreaseIndent;
      }
      function writeAsynchronousModuleElements(nodes) {
        var oldWriter = writer;
        ts.forEach(nodes, function(declaration) {
          var nodeToCheck;
          if (declaration.kind === 214) {
            nodeToCheck = declaration.parent.parent;
          } else if (declaration.kind === 228 || declaration.kind === 229 || declaration.kind === 226) {
            ts.Debug.fail("We should be getting ImportDeclaration instead to write");
          } else {
            nodeToCheck = declaration;
          }
          var moduleElementEmitInfo = ts.forEach(moduleElementDeclarationEmitInfo, function(declEmitInfo) {
            return declEmitInfo.node === nodeToCheck ? declEmitInfo : undefined;
          });
          if (!moduleElementEmitInfo && asynchronousSubModuleDeclarationEmitInfo) {
            moduleElementEmitInfo = ts.forEach(asynchronousSubModuleDeclarationEmitInfo, function(declEmitInfo) {
              return declEmitInfo.node === nodeToCheck ? declEmitInfo : undefined;
            });
          }
          if (moduleElementEmitInfo) {
            if (moduleElementEmitInfo.node.kind === 225) {
              moduleElementEmitInfo.isVisible = true;
            } else {
              createAndSetNewTextWriterWithSymbolWriter();
              for (var declarationIndent = moduleElementEmitInfo.indent; declarationIndent; declarationIndent--) {
                increaseIndent();
              }
              if (nodeToCheck.kind === 221) {
                ts.Debug.assert(asynchronousSubModuleDeclarationEmitInfo === undefined);
                asynchronousSubModuleDeclarationEmitInfo = [];
              }
              writeModuleElement(nodeToCheck);
              if (nodeToCheck.kind === 221) {
                moduleElementEmitInfo.subModuleElementDeclarationEmitInfo = asynchronousSubModuleDeclarationEmitInfo;
                asynchronousSubModuleDeclarationEmitInfo = undefined;
              }
              moduleElementEmitInfo.asynchronousOutput = writer.getText();
            }
          }
        });
        setWriter(oldWriter);
      }
      function handleSymbolAccessibilityError(symbolAccesibilityResult) {
        if (symbolAccesibilityResult.accessibility === 0) {
          if (symbolAccesibilityResult && symbolAccesibilityResult.aliasesToMakeVisible) {
            writeAsynchronousModuleElements(symbolAccesibilityResult.aliasesToMakeVisible);
          }
        } else {
          reportedDeclarationError = true;
          var errorInfo = writer.getSymbolAccessibilityDiagnostic(symbolAccesibilityResult);
          if (errorInfo) {
            if (errorInfo.typeName) {
              emitterDiagnostics.add(ts.createDiagnosticForNode(symbolAccesibilityResult.errorNode || errorInfo.errorNode, errorInfo.diagnosticMessage, ts.getTextOfNodeFromSourceText(currentText, errorInfo.typeName), symbolAccesibilityResult.errorSymbolName, symbolAccesibilityResult.errorModuleName));
            } else {
              emitterDiagnostics.add(ts.createDiagnosticForNode(symbolAccesibilityResult.errorNode || errorInfo.errorNode, errorInfo.diagnosticMessage, symbolAccesibilityResult.errorSymbolName, symbolAccesibilityResult.errorModuleName));
            }
          }
        }
      }
      function trackSymbol(symbol, enclosingDeclaration, meaning) {
        handleSymbolAccessibilityError(resolver.isSymbolAccessible(symbol, enclosingDeclaration, meaning));
      }
      function reportInaccessibleThisError() {
        if (errorNameNode) {
          reportedDeclarationError = true;
          emitterDiagnostics.add(ts.createDiagnosticForNode(errorNameNode, ts.Diagnostics.The_inferred_type_of_0_references_an_inaccessible_this_type_A_type_annotation_is_necessary, ts.declarationNameToString(errorNameNode)));
        }
      }
      function writeTypeOfDeclaration(declaration, type, getSymbolAccessibilityDiagnostic) {
        writer.getSymbolAccessibilityDiagnostic = getSymbolAccessibilityDiagnostic;
        write(": ");
        if (type) {
          emitType(type);
        } else {
          errorNameNode = declaration.name;
          resolver.writeTypeOfDeclaration(declaration, enclosingDeclaration, 2, writer);
          errorNameNode = undefined;
        }
      }
      function writeReturnTypeAtSignature(signature, getSymbolAccessibilityDiagnostic) {
        writer.getSymbolAccessibilityDiagnostic = getSymbolAccessibilityDiagnostic;
        write(": ");
        if (signature.type) {
          emitType(signature.type);
        } else {
          errorNameNode = signature.name;
          resolver.writeReturnTypeOfSignatureDeclaration(signature, enclosingDeclaration, 2, writer);
          errorNameNode = undefined;
        }
      }
      function emitLines(nodes) {
        for (var _i = 0,
            nodes_2 = nodes; _i < nodes_2.length; _i++) {
          var node = nodes_2[_i];
          emit(node);
        }
      }
      function emitSeparatedList(nodes, separator, eachNodeEmitFn, canEmitFn) {
        var currentWriterPos = writer.getTextPos();
        for (var _i = 0,
            nodes_3 = nodes; _i < nodes_3.length; _i++) {
          var node = nodes_3[_i];
          if (!canEmitFn || canEmitFn(node)) {
            if (currentWriterPos !== writer.getTextPos()) {
              write(separator);
            }
            currentWriterPos = writer.getTextPos();
            eachNodeEmitFn(node);
          }
        }
      }
      function emitCommaList(nodes, eachNodeEmitFn, canEmitFn) {
        emitSeparatedList(nodes, ", ", eachNodeEmitFn, canEmitFn);
      }
      function writeJsDocComments(declaration) {
        if (declaration) {
          var jsDocComments = ts.getJsDocCommentsFromText(declaration, currentText);
          ts.emitNewLineBeforeLeadingComments(currentLineMap, writer, declaration, jsDocComments);
          ts.emitComments(currentText, currentLineMap, writer, jsDocComments, true, newLine, ts.writeCommentRange);
        }
      }
      function emitTypeWithNewGetSymbolAccessibilityDiagnostic(type, getSymbolAccessibilityDiagnostic) {
        writer.getSymbolAccessibilityDiagnostic = getSymbolAccessibilityDiagnostic;
        emitType(type);
      }
      function emitType(type) {
        switch (type.kind) {
          case 117:
          case 130:
          case 128:
          case 120:
          case 131:
          case 103:
          case 162:
          case 163:
            return writeTextOfNode(currentText, type);
          case 191:
            return emitExpressionWithTypeArguments(type);
          case 152:
            return emitTypeReference(type);
          case 155:
            return emitTypeQuery(type);
          case 157:
            return emitArrayType(type);
          case 158:
            return emitTupleType(type);
          case 159:
            return emitUnionType(type);
          case 160:
            return emitIntersectionType(type);
          case 161:
            return emitParenType(type);
          case 153:
          case 154:
            return emitSignatureDeclarationWithJsDocComments(type);
          case 156:
            return emitTypeLiteral(type);
          case 69:
            return emitEntityName(type);
          case 136:
            return emitEntityName(type);
          case 151:
            return emitTypePredicate(type);
        }
        function writeEntityName(entityName) {
          if (entityName.kind === 69) {
            writeTextOfNode(currentText, entityName);
          } else {
            var left = entityName.kind === 136 ? entityName.left : entityName.expression;
            var right = entityName.kind === 136 ? entityName.right : entityName.name;
            writeEntityName(left);
            write(".");
            writeTextOfNode(currentText, right);
          }
        }
        function emitEntityName(entityName) {
          var visibilityResult = resolver.isEntityNameVisible(entityName, entityName.parent.kind === 224 ? entityName.parent : enclosingDeclaration);
          handleSymbolAccessibilityError(visibilityResult);
          writeEntityName(entityName);
        }
        function emitExpressionWithTypeArguments(node) {
          if (ts.isSupportedExpressionWithTypeArguments(node)) {
            ts.Debug.assert(node.expression.kind === 69 || node.expression.kind === 169);
            emitEntityName(node.expression);
            if (node.typeArguments) {
              write("<");
              emitCommaList(node.typeArguments, emitType);
              write(">");
            }
          }
        }
        function emitTypeReference(type) {
          emitEntityName(type.typeName);
          if (type.typeArguments) {
            write("<");
            emitCommaList(type.typeArguments, emitType);
            write(">");
          }
        }
        function emitTypePredicate(type) {
          writeTextOfNode(currentText, type.parameterName);
          write(" is ");
          emitType(type.type);
        }
        function emitTypeQuery(type) {
          write("typeof ");
          emitEntityName(type.exprName);
        }
        function emitArrayType(type) {
          emitType(type.elementType);
          write("[]");
        }
        function emitTupleType(type) {
          write("[");
          emitCommaList(type.elementTypes, emitType);
          write("]");
        }
        function emitUnionType(type) {
          emitSeparatedList(type.types, " | ", emitType);
        }
        function emitIntersectionType(type) {
          emitSeparatedList(type.types, " & ", emitType);
        }
        function emitParenType(type) {
          write("(");
          emitType(type.type);
          write(")");
        }
        function emitTypeLiteral(type) {
          write("{");
          if (type.members.length) {
            writeLine();
            increaseIndent();
            emitLines(type.members);
            decreaseIndent();
          }
          write("}");
        }
      }
      function emitSourceFile(node) {
        currentText = node.text;
        currentLineMap = ts.getLineStarts(node);
        currentIdentifiers = node.identifiers;
        isCurrentFileExternalModule = ts.isExternalModule(node);
        enclosingDeclaration = node;
        ts.emitDetachedComments(currentText, currentLineMap, writer, ts.writeCommentRange, node, newLine, true);
        emitLines(node.statements);
      }
      function getExportDefaultTempVariableName() {
        var baseName = "_default";
        if (!ts.hasProperty(currentIdentifiers, baseName)) {
          return baseName;
        }
        var count = 0;
        while (true) {
          count++;
          var name_21 = baseName + "_" + count;
          if (!ts.hasProperty(currentIdentifiers, name_21)) {
            return name_21;
          }
        }
      }
      function emitExportAssignment(node) {
        if (node.expression.kind === 69) {
          write(node.isExportEquals ? "export = " : "export default ");
          writeTextOfNode(currentText, node.expression);
        } else {
          var tempVarName = getExportDefaultTempVariableName();
          write("declare var ");
          write(tempVarName);
          write(": ");
          writer.getSymbolAccessibilityDiagnostic = getDefaultExportAccessibilityDiagnostic;
          resolver.writeTypeOfExpression(node.expression, enclosingDeclaration, 2, writer);
          write(";");
          writeLine();
          write(node.isExportEquals ? "export = " : "export default ");
          write(tempVarName);
        }
        write(";");
        writeLine();
        if (node.expression.kind === 69) {
          var nodes = resolver.collectLinkedAliases(node.expression);
          writeAsynchronousModuleElements(nodes);
        }
        function getDefaultExportAccessibilityDiagnostic(diagnostic) {
          return {
            diagnosticMessage: ts.Diagnostics.Default_export_of_the_module_has_or_is_using_private_name_0,
            errorNode: node
          };
        }
      }
      function isModuleElementVisible(node) {
        return resolver.isDeclarationVisible(node);
      }
      function emitModuleElement(node, isModuleElementVisible) {
        if (isModuleElementVisible) {
          writeModuleElement(node);
        } else if (node.kind === 224 || (node.parent.kind === 251 && isCurrentFileExternalModule)) {
          var isVisible = void 0;
          if (asynchronousSubModuleDeclarationEmitInfo && node.parent.kind !== 251) {
            asynchronousSubModuleDeclarationEmitInfo.push({
              node: node,
              outputPos: writer.getTextPos(),
              indent: writer.getIndent(),
              isVisible: isVisible
            });
          } else {
            if (node.kind === 225) {
              var importDeclaration = node;
              if (importDeclaration.importClause) {
                isVisible = (importDeclaration.importClause.name && resolver.isDeclarationVisible(importDeclaration.importClause)) || isVisibleNamedBinding(importDeclaration.importClause.namedBindings);
              }
            }
            moduleElementDeclarationEmitInfo.push({
              node: node,
              outputPos: writer.getTextPos(),
              indent: writer.getIndent(),
              isVisible: isVisible
            });
          }
        }
      }
      function writeModuleElement(node) {
        switch (node.kind) {
          case 216:
            return writeFunctionDeclaration(node);
          case 196:
            return writeVariableStatement(node);
          case 218:
            return writeInterfaceDeclaration(node);
          case 217:
            return writeClassDeclaration(node);
          case 219:
            return writeTypeAliasDeclaration(node);
          case 220:
            return writeEnumDeclaration(node);
          case 221:
            return writeModuleDeclaration(node);
          case 224:
            return writeImportEqualsDeclaration(node);
          case 225:
            return writeImportDeclaration(node);
          default:
            ts.Debug.fail("Unknown symbol kind");
        }
      }
      function emitModuleElementDeclarationFlags(node) {
        if (node.parent.kind === 251) {
          if (node.flags & 2) {
            write("export ");
          }
          if (node.flags & 512) {
            write("default ");
          } else if (node.kind !== 218 && !noDeclare) {
            write("declare ");
          }
        }
      }
      function emitClassMemberDeclarationFlags(node) {
        if (node.flags & 16) {
          write("private ");
        } else if (node.flags & 32) {
          write("protected ");
        }
        if (node.flags & 64) {
          write("static ");
        }
        if (node.flags & 128) {
          write("abstract ");
        }
      }
      function writeImportEqualsDeclaration(node) {
        emitJsDocComments(node);
        if (node.flags & 2) {
          write("export ");
        }
        write("import ");
        writeTextOfNode(currentText, node.name);
        write(" = ");
        if (ts.isInternalModuleImportEqualsDeclaration(node)) {
          emitTypeWithNewGetSymbolAccessibilityDiagnostic(node.moduleReference, getImportEntityNameVisibilityError);
          write(";");
        } else {
          write("require(");
          emitExternalModuleSpecifier(node);
          write(");");
        }
        writer.writeLine();
        function getImportEntityNameVisibilityError(symbolAccesibilityResult) {
          return {
            diagnosticMessage: ts.Diagnostics.Import_declaration_0_is_using_private_name_1,
            errorNode: node,
            typeName: node.name
          };
        }
      }
      function isVisibleNamedBinding(namedBindings) {
        if (namedBindings) {
          if (namedBindings.kind === 227) {
            return resolver.isDeclarationVisible(namedBindings);
          } else {
            return ts.forEach(namedBindings.elements, function(namedImport) {
              return resolver.isDeclarationVisible(namedImport);
            });
          }
        }
      }
      function writeImportDeclaration(node) {
        emitJsDocComments(node);
        if (node.flags & 2) {
          write("export ");
        }
        write("import ");
        if (node.importClause) {
          var currentWriterPos = writer.getTextPos();
          if (node.importClause.name && resolver.isDeclarationVisible(node.importClause)) {
            writeTextOfNode(currentText, node.importClause.name);
          }
          if (node.importClause.namedBindings && isVisibleNamedBinding(node.importClause.namedBindings)) {
            if (currentWriterPos !== writer.getTextPos()) {
              write(", ");
            }
            if (node.importClause.namedBindings.kind === 227) {
              write("* as ");
              writeTextOfNode(currentText, node.importClause.namedBindings.name);
            } else {
              write("{ ");
              emitCommaList(node.importClause.namedBindings.elements, emitImportOrExportSpecifier, resolver.isDeclarationVisible);
              write(" }");
            }
          }
          write(" from ");
        }
        emitExternalModuleSpecifier(node);
        write(";");
        writer.writeLine();
      }
      function emitExternalModuleSpecifier(parent) {
        resultHasExternalModuleIndicator = resultHasExternalModuleIndicator || parent.kind !== 221;
        var moduleSpecifier;
        if (parent.kind === 224) {
          var node = parent;
          moduleSpecifier = ts.getExternalModuleImportEqualsDeclarationExpression(node);
        } else if (parent.kind === 221) {
          moduleSpecifier = parent.name;
        } else {
          var node = parent;
          moduleSpecifier = node.moduleSpecifier;
        }
        if (moduleSpecifier.kind === 9 && isBundledEmit && (compilerOptions.out || compilerOptions.outFile)) {
          var moduleName = ts.getExternalModuleNameFromDeclaration(host, resolver, parent);
          if (moduleName) {
            write("\"");
            write(moduleName);
            write("\"");
            return;
          }
        }
        writeTextOfNode(currentText, moduleSpecifier);
      }
      function emitImportOrExportSpecifier(node) {
        if (node.propertyName) {
          writeTextOfNode(currentText, node.propertyName);
          write(" as ");
        }
        writeTextOfNode(currentText, node.name);
      }
      function emitExportSpecifier(node) {
        emitImportOrExportSpecifier(node);
        var nodes = resolver.collectLinkedAliases(node.propertyName || node.name);
        writeAsynchronousModuleElements(nodes);
      }
      function emitExportDeclaration(node) {
        emitJsDocComments(node);
        write("export ");
        if (node.exportClause) {
          write("{ ");
          emitCommaList(node.exportClause.elements, emitExportSpecifier);
          write(" }");
        } else {
          write("*");
        }
        if (node.moduleSpecifier) {
          write(" from ");
          emitExternalModuleSpecifier(node);
        }
        write(";");
        writer.writeLine();
      }
      function writeModuleDeclaration(node) {
        emitJsDocComments(node);
        emitModuleElementDeclarationFlags(node);
        if (ts.isGlobalScopeAugmentation(node)) {
          write("global ");
        } else {
          if (node.flags & 65536) {
            write("namespace ");
          } else {
            write("module ");
          }
          if (ts.isExternalModuleAugmentation(node)) {
            emitExternalModuleSpecifier(node);
          } else {
            writeTextOfNode(currentText, node.name);
          }
        }
        while (node.body.kind !== 222) {
          node = node.body;
          write(".");
          writeTextOfNode(currentText, node.name);
        }
        var prevEnclosingDeclaration = enclosingDeclaration;
        enclosingDeclaration = node;
        write(" {");
        writeLine();
        increaseIndent();
        emitLines(node.body.statements);
        decreaseIndent();
        write("}");
        writeLine();
        enclosingDeclaration = prevEnclosingDeclaration;
      }
      function writeTypeAliasDeclaration(node) {
        var prevEnclosingDeclaration = enclosingDeclaration;
        enclosingDeclaration = node;
        emitJsDocComments(node);
        emitModuleElementDeclarationFlags(node);
        write("type ");
        writeTextOfNode(currentText, node.name);
        emitTypeParameters(node.typeParameters);
        write(" = ");
        emitTypeWithNewGetSymbolAccessibilityDiagnostic(node.type, getTypeAliasDeclarationVisibilityError);
        write(";");
        writeLine();
        enclosingDeclaration = prevEnclosingDeclaration;
        function getTypeAliasDeclarationVisibilityError(symbolAccesibilityResult) {
          return {
            diagnosticMessage: ts.Diagnostics.Exported_type_alias_0_has_or_is_using_private_name_1,
            errorNode: node.type,
            typeName: node.name
          };
        }
      }
      function writeEnumDeclaration(node) {
        emitJsDocComments(node);
        emitModuleElementDeclarationFlags(node);
        if (ts.isConst(node)) {
          write("const ");
        }
        write("enum ");
        writeTextOfNode(currentText, node.name);
        write(" {");
        writeLine();
        increaseIndent();
        emitLines(node.members);
        decreaseIndent();
        write("}");
        writeLine();
      }
      function emitEnumMemberDeclaration(node) {
        emitJsDocComments(node);
        writeTextOfNode(currentText, node.name);
        var enumMemberValue = resolver.getConstantValue(node);
        if (enumMemberValue !== undefined) {
          write(" = ");
          write(enumMemberValue.toString());
        }
        write(",");
        writeLine();
      }
      function isPrivateMethodTypeParameter(node) {
        return node.parent.kind === 144 && (node.parent.flags & 16);
      }
      function emitTypeParameters(typeParameters) {
        function emitTypeParameter(node) {
          increaseIndent();
          emitJsDocComments(node);
          decreaseIndent();
          writeTextOfNode(currentText, node.name);
          if (node.constraint && !isPrivateMethodTypeParameter(node)) {
            write(" extends ");
            if (node.parent.kind === 153 || node.parent.kind === 154 || (node.parent.parent && node.parent.parent.kind === 156)) {
              ts.Debug.assert(node.parent.kind === 144 || node.parent.kind === 143 || node.parent.kind === 153 || node.parent.kind === 154 || node.parent.kind === 148 || node.parent.kind === 149);
              emitType(node.constraint);
            } else {
              emitTypeWithNewGetSymbolAccessibilityDiagnostic(node.constraint, getTypeParameterConstraintVisibilityError);
            }
          }
          function getTypeParameterConstraintVisibilityError(symbolAccesibilityResult) {
            var diagnosticMessage;
            switch (node.parent.kind) {
              case 217:
                diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_exported_class_has_or_is_using_private_name_1;
                break;
              case 218:
                diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_exported_interface_has_or_is_using_private_name_1;
                break;
              case 149:
                diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1;
                break;
              case 148:
                diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1;
                break;
              case 144:
              case 143:
                if (node.parent.flags & 64) {
                  diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1;
                } else if (node.parent.parent.kind === 217) {
                  diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1;
                } else {
                  diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1;
                }
                break;
              case 216:
                diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_exported_function_has_or_is_using_private_name_1;
                break;
              default:
                ts.Debug.fail("This is unknown parent for type parameter: " + node.parent.kind);
            }
            return {
              diagnosticMessage: diagnosticMessage,
              errorNode: node,
              typeName: node.name
            };
          }
        }
        if (typeParameters) {
          write("<");
          emitCommaList(typeParameters, emitTypeParameter);
          write(">");
        }
      }
      function emitHeritageClause(typeReferences, isImplementsList) {
        if (typeReferences) {
          write(isImplementsList ? " implements " : " extends ");
          emitCommaList(typeReferences, emitTypeOfTypeReference);
        }
        function emitTypeOfTypeReference(node) {
          if (ts.isSupportedExpressionWithTypeArguments(node)) {
            emitTypeWithNewGetSymbolAccessibilityDiagnostic(node, getHeritageClauseVisibilityError);
          } else if (!isImplementsList && node.expression.kind === 93) {
            write("null");
          }
          function getHeritageClauseVisibilityError(symbolAccesibilityResult) {
            var diagnosticMessage;
            if (node.parent.parent.kind === 217) {
              diagnosticMessage = isImplementsList ? ts.Diagnostics.Implements_clause_of_exported_class_0_has_or_is_using_private_name_1 : ts.Diagnostics.Extends_clause_of_exported_class_0_has_or_is_using_private_name_1;
            } else {
              diagnosticMessage = ts.Diagnostics.Extends_clause_of_exported_interface_0_has_or_is_using_private_name_1;
            }
            return {
              diagnosticMessage: diagnosticMessage,
              errorNode: node,
              typeName: node.parent.parent.name
            };
          }
        }
      }
      function writeClassDeclaration(node) {
        function emitParameterProperties(constructorDeclaration) {
          if (constructorDeclaration) {
            ts.forEach(constructorDeclaration.parameters, function(param) {
              if (param.flags & 56) {
                emitPropertyDeclaration(param);
              }
            });
          }
        }
        emitJsDocComments(node);
        emitModuleElementDeclarationFlags(node);
        if (node.flags & 128) {
          write("abstract ");
        }
        write("class ");
        writeTextOfNode(currentText, node.name);
        var prevEnclosingDeclaration = enclosingDeclaration;
        enclosingDeclaration = node;
        emitTypeParameters(node.typeParameters);
        var baseTypeNode = ts.getClassExtendsHeritageClauseElement(node);
        if (baseTypeNode) {
          emitHeritageClause([baseTypeNode], false);
        }
        emitHeritageClause(ts.getClassImplementsHeritageClauseElements(node), true);
        write(" {");
        writeLine();
        increaseIndent();
        emitParameterProperties(ts.getFirstConstructorWithBody(node));
        emitLines(node.members);
        decreaseIndent();
        write("}");
        writeLine();
        enclosingDeclaration = prevEnclosingDeclaration;
      }
      function writeInterfaceDeclaration(node) {
        emitJsDocComments(node);
        emitModuleElementDeclarationFlags(node);
        write("interface ");
        writeTextOfNode(currentText, node.name);
        var prevEnclosingDeclaration = enclosingDeclaration;
        enclosingDeclaration = node;
        emitTypeParameters(node.typeParameters);
        emitHeritageClause(ts.getInterfaceBaseTypeNodes(node), false);
        write(" {");
        writeLine();
        increaseIndent();
        emitLines(node.members);
        decreaseIndent();
        write("}");
        writeLine();
        enclosingDeclaration = prevEnclosingDeclaration;
      }
      function emitPropertyDeclaration(node) {
        if (ts.hasDynamicName(node)) {
          return;
        }
        emitJsDocComments(node);
        emitClassMemberDeclarationFlags(node);
        emitVariableDeclaration(node);
        write(";");
        writeLine();
      }
      function emitVariableDeclaration(node) {
        if (node.kind !== 214 || resolver.isDeclarationVisible(node)) {
          if (ts.isBindingPattern(node.name)) {
            emitBindingPattern(node.name);
          } else {
            writeTextOfNode(currentText, node.name);
            if ((node.kind === 142 || node.kind === 141) && ts.hasQuestionToken(node)) {
              write("?");
            }
            if ((node.kind === 142 || node.kind === 141) && node.parent.kind === 156) {
              emitTypeOfVariableDeclarationFromTypeLiteral(node);
            } else if (!(node.flags & 16)) {
              writeTypeOfDeclaration(node, node.type, getVariableDeclarationTypeVisibilityError);
            }
          }
        }
        function getVariableDeclarationTypeVisibilityDiagnosticMessage(symbolAccesibilityResult) {
          if (node.kind === 214) {
            return symbolAccesibilityResult.errorModuleName ? symbolAccesibilityResult.accessibility === 2 ? ts.Diagnostics.Exported_variable_0_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : ts.Diagnostics.Exported_variable_0_has_or_is_using_name_1_from_private_module_2 : ts.Diagnostics.Exported_variable_0_has_or_is_using_private_name_1;
          } else if (node.kind === 142 || node.kind === 141) {
            if (node.flags & 64) {
              return symbolAccesibilityResult.errorModuleName ? symbolAccesibilityResult.accessibility === 2 ? ts.Diagnostics.Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : ts.Diagnostics.Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2 : ts.Diagnostics.Public_static_property_0_of_exported_class_has_or_is_using_private_name_1;
            } else if (node.parent.kind === 217) {
              return symbolAccesibilityResult.errorModuleName ? symbolAccesibilityResult.accessibility === 2 ? ts.Diagnostics.Public_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : ts.Diagnostics.Public_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2 : ts.Diagnostics.Public_property_0_of_exported_class_has_or_is_using_private_name_1;
            } else {
              return symbolAccesibilityResult.errorModuleName ? ts.Diagnostics.Property_0_of_exported_interface_has_or_is_using_name_1_from_private_module_2 : ts.Diagnostics.Property_0_of_exported_interface_has_or_is_using_private_name_1;
            }
          }
        }
        function getVariableDeclarationTypeVisibilityError(symbolAccesibilityResult) {
          var diagnosticMessage = getVariableDeclarationTypeVisibilityDiagnosticMessage(symbolAccesibilityResult);
          return diagnosticMessage !== undefined ? {
            diagnosticMessage: diagnosticMessage,
            errorNode: node,
            typeName: node.name
          } : undefined;
        }
        function emitBindingPattern(bindingPattern) {
          var elements = [];
          for (var _i = 0,
              _a = bindingPattern.elements; _i < _a.length; _i++) {
            var element = _a[_i];
            if (element.kind !== 190) {
              elements.push(element);
            }
          }
          emitCommaList(elements, emitBindingElement);
        }
        function emitBindingElement(bindingElement) {
          function getBindingElementTypeVisibilityError(symbolAccesibilityResult) {
            var diagnosticMessage = getVariableDeclarationTypeVisibilityDiagnosticMessage(symbolAccesibilityResult);
            return diagnosticMessage !== undefined ? {
              diagnosticMessage: diagnosticMessage,
              errorNode: bindingElement,
              typeName: bindingElement.name
            } : undefined;
          }
          if (bindingElement.name) {
            if (ts.isBindingPattern(bindingElement.name)) {
              emitBindingPattern(bindingElement.name);
            } else {
              writeTextOfNode(currentText, bindingElement.name);
              writeTypeOfDeclaration(bindingElement, undefined, getBindingElementTypeVisibilityError);
            }
          }
        }
      }
      function emitTypeOfVariableDeclarationFromTypeLiteral(node) {
        if (node.type) {
          write(": ");
          emitType(node.type);
        }
      }
      function isVariableStatementVisible(node) {
        return ts.forEach(node.declarationList.declarations, function(varDeclaration) {
          return resolver.isDeclarationVisible(varDeclaration);
        });
      }
      function writeVariableStatement(node) {
        emitJsDocComments(node);
        emitModuleElementDeclarationFlags(node);
        if (ts.isLet(node.declarationList)) {
          write("let ");
        } else if (ts.isConst(node.declarationList)) {
          write("const ");
        } else {
          write("var ");
        }
        emitCommaList(node.declarationList.declarations, emitVariableDeclaration, resolver.isDeclarationVisible);
        write(";");
        writeLine();
      }
      function emitAccessorDeclaration(node) {
        if (ts.hasDynamicName(node)) {
          return;
        }
        var accessors = ts.getAllAccessorDeclarations(node.parent.members, node);
        var accessorWithTypeAnnotation;
        if (node === accessors.firstAccessor) {
          emitJsDocComments(accessors.getAccessor);
          emitJsDocComments(accessors.setAccessor);
          emitClassMemberDeclarationFlags(node);
          writeTextOfNode(currentText, node.name);
          if (!(node.flags & 16)) {
            accessorWithTypeAnnotation = node;
            var type = getTypeAnnotationFromAccessor(node);
            if (!type) {
              var anotherAccessor = node.kind === 146 ? accessors.setAccessor : accessors.getAccessor;
              type = getTypeAnnotationFromAccessor(anotherAccessor);
              if (type) {
                accessorWithTypeAnnotation = anotherAccessor;
              }
            }
            writeTypeOfDeclaration(node, type, getAccessorDeclarationTypeVisibilityError);
          }
          write(";");
          writeLine();
        }
        function getTypeAnnotationFromAccessor(accessor) {
          if (accessor) {
            return accessor.kind === 146 ? accessor.type : accessor.parameters.length > 0 ? accessor.parameters[0].type : undefined;
          }
        }
        function getAccessorDeclarationTypeVisibilityError(symbolAccesibilityResult) {
          var diagnosticMessage;
          if (accessorWithTypeAnnotation.kind === 147) {
            if (accessorWithTypeAnnotation.parent.flags & 64) {
              diagnosticMessage = symbolAccesibilityResult.errorModuleName ? ts.Diagnostics.Parameter_0_of_public_static_property_setter_from_exported_class_has_or_is_using_name_1_from_private_module_2 : ts.Diagnostics.Parameter_0_of_public_static_property_setter_from_exported_class_has_or_is_using_private_name_1;
            } else {
              diagnosticMessage = symbolAccesibilityResult.errorModuleName ? ts.Diagnostics.Parameter_0_of_public_property_setter_from_exported_class_has_or_is_using_name_1_from_private_module_2 : ts.Diagnostics.Parameter_0_of_public_property_setter_from_exported_class_has_or_is_using_private_name_1;
            }
            return {
              diagnosticMessage: diagnosticMessage,
              errorNode: accessorWithTypeAnnotation.parameters[0],
              typeName: accessorWithTypeAnnotation.name
            };
          } else {
            if (accessorWithTypeAnnotation.flags & 64) {
              diagnosticMessage = symbolAccesibilityResult.errorModuleName ? symbolAccesibilityResult.accessibility === 2 ? ts.Diagnostics.Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named : ts.Diagnostics.Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_name_0_from_private_module_1 : ts.Diagnostics.Return_type_of_public_static_property_getter_from_exported_class_has_or_is_using_private_name_0;
            } else {
              diagnosticMessage = symbolAccesibilityResult.errorModuleName ? symbolAccesibilityResult.accessibility === 2 ? ts.Diagnostics.Return_type_of_public_property_getter_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named : ts.Diagnostics.Return_type_of_public_property_getter_from_exported_class_has_or_is_using_name_0_from_private_module_1 : ts.Diagnostics.Return_type_of_public_property_getter_from_exported_class_has_or_is_using_private_name_0;
            }
            return {
              diagnosticMessage: diagnosticMessage,
              errorNode: accessorWithTypeAnnotation.name,
              typeName: undefined
            };
          }
        }
      }
      function writeFunctionDeclaration(node) {
        if (ts.hasDynamicName(node)) {
          return;
        }
        if (!resolver.isImplementationOfOverload(node)) {
          emitJsDocComments(node);
          if (node.kind === 216) {
            emitModuleElementDeclarationFlags(node);
          } else if (node.kind === 144) {
            emitClassMemberDeclarationFlags(node);
          }
          if (node.kind === 216) {
            write("function ");
            writeTextOfNode(currentText, node.name);
          } else if (node.kind === 145) {
            write("constructor");
          } else {
            writeTextOfNode(currentText, node.name);
            if (ts.hasQuestionToken(node)) {
              write("?");
            }
          }
          emitSignatureDeclaration(node);
        }
      }
      function emitSignatureDeclarationWithJsDocComments(node) {
        emitJsDocComments(node);
        emitSignatureDeclaration(node);
      }
      function emitSignatureDeclaration(node) {
        var prevEnclosingDeclaration = enclosingDeclaration;
        enclosingDeclaration = node;
        if (node.kind === 149 || node.kind === 154) {
          write("new ");
        }
        emitTypeParameters(node.typeParameters);
        if (node.kind === 150) {
          write("[");
        } else {
          write("(");
        }
        emitCommaList(node.parameters, emitParameterDeclaration);
        if (node.kind === 150) {
          write("]");
        } else {
          write(")");
        }
        var isFunctionTypeOrConstructorType = node.kind === 153 || node.kind === 154;
        if (isFunctionTypeOrConstructorType || node.parent.kind === 156) {
          if (node.type) {
            write(isFunctionTypeOrConstructorType ? " => " : ": ");
            emitType(node.type);
          }
        } else if (node.kind !== 145 && !(node.flags & 16)) {
          writeReturnTypeAtSignature(node, getReturnTypeVisibilityError);
        }
        enclosingDeclaration = prevEnclosingDeclaration;
        if (!isFunctionTypeOrConstructorType) {
          write(";");
          writeLine();
        }
        function getReturnTypeVisibilityError(symbolAccesibilityResult) {
          var diagnosticMessage;
          switch (node.kind) {
            case 149:
              diagnosticMessage = symbolAccesibilityResult.errorModuleName ? ts.Diagnostics.Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1 : ts.Diagnostics.Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_0;
              break;
            case 148:
              diagnosticMessage = symbolAccesibilityResult.errorModuleName ? ts.Diagnostics.Return_type_of_call_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1 : ts.Diagnostics.Return_type_of_call_signature_from_exported_interface_has_or_is_using_private_name_0;
              break;
            case 150:
              diagnosticMessage = symbolAccesibilityResult.errorModuleName ? ts.Diagnostics.Return_type_of_index_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1 : ts.Diagnostics.Return_type_of_index_signature_from_exported_interface_has_or_is_using_private_name_0;
              break;
            case 144:
            case 143:
              if (node.flags & 64) {
                diagnosticMessage = symbolAccesibilityResult.errorModuleName ? symbolAccesibilityResult.accessibility === 2 ? ts.Diagnostics.Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named : ts.Diagnostics.Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_private_module_1 : ts.Diagnostics.Return_type_of_public_static_method_from_exported_class_has_or_is_using_private_name_0;
              } else if (node.parent.kind === 217) {
                diagnosticMessage = symbolAccesibilityResult.errorModuleName ? symbolAccesibilityResult.accessibility === 2 ? ts.Diagnostics.Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named : ts.Diagnostics.Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_private_module_1 : ts.Diagnostics.Return_type_of_public_method_from_exported_class_has_or_is_using_private_name_0;
              } else {
                diagnosticMessage = symbolAccesibilityResult.errorModuleName ? ts.Diagnostics.Return_type_of_method_from_exported_interface_has_or_is_using_name_0_from_private_module_1 : ts.Diagnostics.Return_type_of_method_from_exported_interface_has_or_is_using_private_name_0;
              }
              break;
            case 216:
              diagnosticMessage = symbolAccesibilityResult.errorModuleName ? symbolAccesibilityResult.accessibility === 2 ? ts.Diagnostics.Return_type_of_exported_function_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named : ts.Diagnostics.Return_type_of_exported_function_has_or_is_using_name_0_from_private_module_1 : ts.Diagnostics.Return_type_of_exported_function_has_or_is_using_private_name_0;
              break;
            default:
              ts.Debug.fail("This is unknown kind for signature: " + node.kind);
          }
          return {
            diagnosticMessage: diagnosticMessage,
            errorNode: node.name || node
          };
        }
      }
      function emitParameterDeclaration(node) {
        increaseIndent();
        emitJsDocComments(node);
        if (node.dotDotDotToken) {
          write("...");
        }
        if (ts.isBindingPattern(node.name)) {
          emitBindingPattern(node.name);
        } else {
          writeTextOfNode(currentText, node.name);
        }
        if (resolver.isOptionalParameter(node)) {
          write("?");
        }
        decreaseIndent();
        if (node.parent.kind === 153 || node.parent.kind === 154 || node.parent.parent.kind === 156) {
          emitTypeOfVariableDeclarationFromTypeLiteral(node);
        } else if (!(node.parent.flags & 16)) {
          writeTypeOfDeclaration(node, node.type, getParameterDeclarationTypeVisibilityError);
        }
        function getParameterDeclarationTypeVisibilityError(symbolAccesibilityResult) {
          var diagnosticMessage = getParameterDeclarationTypeVisibilityDiagnosticMessage(symbolAccesibilityResult);
          return diagnosticMessage !== undefined ? {
            diagnosticMessage: diagnosticMessage,
            errorNode: node,
            typeName: node.name
          } : undefined;
        }
        function getParameterDeclarationTypeVisibilityDiagnosticMessage(symbolAccesibilityResult) {
          switch (node.parent.kind) {
            case 145:
              return symbolAccesibilityResult.errorModuleName ? symbolAccesibilityResult.accessibility === 2 ? ts.Diagnostics.Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : ts.Diagnostics.Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_private_module_2 : ts.Diagnostics.Parameter_0_of_constructor_from_exported_class_has_or_is_using_private_name_1;
            case 149:
              return symbolAccesibilityResult.errorModuleName ? ts.Diagnostics.Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2 : ts.Diagnostics.Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1;
            case 148:
              return symbolAccesibilityResult.errorModuleName ? ts.Diagnostics.Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2 : ts.Diagnostics.Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1;
            case 144:
            case 143:
              if (node.parent.flags & 64) {
                return symbolAccesibilityResult.errorModuleName ? symbolAccesibilityResult.accessibility === 2 ? ts.Diagnostics.Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : ts.Diagnostics.Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_private_module_2 : ts.Diagnostics.Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1;
              } else if (node.parent.parent.kind === 217) {
                return symbolAccesibilityResult.errorModuleName ? symbolAccesibilityResult.accessibility === 2 ? ts.Diagnostics.Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : ts.Diagnostics.Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_private_module_2 : ts.Diagnostics.Parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1;
              } else {
                return symbolAccesibilityResult.errorModuleName ? ts.Diagnostics.Parameter_0_of_method_from_exported_interface_has_or_is_using_name_1_from_private_module_2 : ts.Diagnostics.Parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1;
              }
            case 216:
              return symbolAccesibilityResult.errorModuleName ? symbolAccesibilityResult.accessibility === 2 ? ts.Diagnostics.Parameter_0_of_exported_function_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : ts.Diagnostics.Parameter_0_of_exported_function_has_or_is_using_name_1_from_private_module_2 : ts.Diagnostics.Parameter_0_of_exported_function_has_or_is_using_private_name_1;
            default:
              ts.Debug.fail("This is unknown parent for parameter: " + node.parent.kind);
          }
        }
        function emitBindingPattern(bindingPattern) {
          if (bindingPattern.kind === 164) {
            write("{");
            emitCommaList(bindingPattern.elements, emitBindingElement);
            write("}");
          } else if (bindingPattern.kind === 165) {
            write("[");
            var elements = bindingPattern.elements;
            emitCommaList(elements, emitBindingElement);
            if (elements && elements.hasTrailingComma) {
              write(", ");
            }
            write("]");
          }
        }
        function emitBindingElement(bindingElement) {
          if (bindingElement.kind === 190) {
            write(" ");
          } else if (bindingElement.kind === 166) {
            if (bindingElement.propertyName) {
              writeTextOfNode(currentText, bindingElement.propertyName);
              write(": ");
            }
            if (bindingElement.name) {
              if (ts.isBindingPattern(bindingElement.name)) {
                emitBindingPattern(bindingElement.name);
              } else {
                ts.Debug.assert(bindingElement.name.kind === 69);
                if (bindingElement.dotDotDotToken) {
                  write("...");
                }
                writeTextOfNode(currentText, bindingElement.name);
              }
            }
          }
        }
      }
      function emitNode(node) {
        switch (node.kind) {
          case 216:
          case 221:
          case 224:
          case 218:
          case 217:
          case 219:
          case 220:
            return emitModuleElement(node, isModuleElementVisible(node));
          case 196:
            return emitModuleElement(node, isVariableStatementVisible(node));
          case 225:
            return emitModuleElement(node, !node.importClause);
          case 231:
            return emitExportDeclaration(node);
          case 145:
          case 144:
          case 143:
            return writeFunctionDeclaration(node);
          case 149:
          case 148:
          case 150:
            return emitSignatureDeclarationWithJsDocComments(node);
          case 146:
          case 147:
            return emitAccessorDeclaration(node);
          case 142:
          case 141:
            return emitPropertyDeclaration(node);
          case 250:
            return emitEnumMemberDeclaration(node);
          case 230:
            return emitExportAssignment(node);
          case 251:
            return emitSourceFile(node);
        }
      }
      function writeReferencePath(referencedFile, addBundledFileReference) {
        var declFileName;
        var addedBundledEmitReference = false;
        if (ts.isDeclarationFile(referencedFile)) {
          declFileName = referencedFile.fileName;
        } else {
          ts.forEachExpectedEmitFile(host, getDeclFileName, referencedFile);
        }
        if (declFileName) {
          declFileName = ts.getRelativePathToDirectoryOrUrl(ts.getDirectoryPath(ts.normalizeSlashes(declarationFilePath)), declFileName, host.getCurrentDirectory(), host.getCanonicalFileName, false);
          referencePathsOutput += "/// <reference path=\"" + declFileName + "\" />" + newLine;
        }
        return addedBundledEmitReference;
        function getDeclFileName(emitFileNames, sourceFiles, isBundledEmit) {
          if (isBundledEmit && !addBundledFileReference) {
            return;
          }
          ts.Debug.assert(!!emitFileNames.declarationFilePath || ts.isSourceFileJavaScript(referencedFile), "Declaration file is not present only for javascript files");
          declFileName = emitFileNames.declarationFilePath || emitFileNames.jsFilePath;
          addedBundledEmitReference = isBundledEmit;
        }
      }
    }
    function writeDeclarationFile(declarationFilePath, sourceFiles, isBundledEmit, host, resolver, emitterDiagnostics) {
      var emitDeclarationResult = emitDeclarations(host, resolver, emitterDiagnostics, declarationFilePath, sourceFiles, isBundledEmit);
      var emitSkipped = emitDeclarationResult.reportedDeclarationError || host.isEmitBlocked(declarationFilePath) || host.getCompilerOptions().noEmit;
      if (!emitSkipped) {
        var declarationOutput = emitDeclarationResult.referencePathsOutput + getDeclarationOutput(emitDeclarationResult.synchronousDeclarationOutput, emitDeclarationResult.moduleElementDeclarationEmitInfo);
        ts.writeFile(host, emitterDiagnostics, declarationFilePath, declarationOutput, host.getCompilerOptions().emitBOM);
      }
      return emitSkipped;
      function getDeclarationOutput(synchronousDeclarationOutput, moduleElementDeclarationEmitInfo) {
        var appliedSyncOutputPos = 0;
        var declarationOutput = "";
        ts.forEach(moduleElementDeclarationEmitInfo, function(aliasEmitInfo) {
          if (aliasEmitInfo.asynchronousOutput) {
            declarationOutput += synchronousDeclarationOutput.substring(appliedSyncOutputPos, aliasEmitInfo.outputPos);
            declarationOutput += getDeclarationOutput(aliasEmitInfo.asynchronousOutput, aliasEmitInfo.subModuleElementDeclarationEmitInfo);
            appliedSyncOutputPos = aliasEmitInfo.outputPos;
          }
        });
        declarationOutput += synchronousDeclarationOutput.substring(appliedSyncOutputPos);
        return declarationOutput;
      }
    }
    ts.writeDeclarationFile = writeDeclarationFile;
  })(ts || (ts = {}));
  var ts;
  (function(ts) {
    function getResolvedExternalModuleName(host, file) {
      return file.moduleName || ts.getExternalModuleNameFromPath(host, file.fileName);
    }
    ts.getResolvedExternalModuleName = getResolvedExternalModuleName;
    function getExternalModuleNameFromDeclaration(host, resolver, declaration) {
      var file = resolver.getExternalModuleFileFromDeclaration(declaration);
      if (!file || ts.isDeclarationFile(file)) {
        return undefined;
      }
      return getResolvedExternalModuleName(host, file);
    }
    ts.getExternalModuleNameFromDeclaration = getExternalModuleNameFromDeclaration;
    var entities = {
      "quot": 0x0022,
      "amp": 0x0026,
      "apos": 0x0027,
      "lt": 0x003C,
      "gt": 0x003E,
      "nbsp": 0x00A0,
      "iexcl": 0x00A1,
      "cent": 0x00A2,
      "pound": 0x00A3,
      "curren": 0x00A4,
      "yen": 0x00A5,
      "brvbar": 0x00A6,
      "sect": 0x00A7,
      "uml": 0x00A8,
      "copy": 0x00A9,
      "ordf": 0x00AA,
      "laquo": 0x00AB,
      "not": 0x00AC,
      "shy": 0x00AD,
      "reg": 0x00AE,
      "macr": 0x00AF,
      "deg": 0x00B0,
      "plusmn": 0x00B1,
      "sup2": 0x00B2,
      "sup3": 0x00B3,
      "acute": 0x00B4,
      "micro": 0x00B5,
      "para": 0x00B6,
      "middot": 0x00B7,
      "cedil": 0x00B8,
      "sup1": 0x00B9,
      "ordm": 0x00BA,
      "raquo": 0x00BB,
      "frac14": 0x00BC,
      "frac12": 0x00BD,
      "frac34": 0x00BE,
      "iquest": 0x00BF,
      "Agrave": 0x00C0,
      "Aacute": 0x00C1,
      "Acirc": 0x00C2,
      "Atilde": 0x00C3,
      "Auml": 0x00C4,
      "Aring": 0x00C5,
      "AElig": 0x00C6,
      "Ccedil": 0x00C7,
      "Egrave": 0x00C8,
      "Eacute": 0x00C9,
      "Ecirc": 0x00CA,
      "Euml": 0x00CB,
      "Igrave": 0x00CC,
      "Iacute": 0x00CD,
      "Icirc": 0x00CE,
      "Iuml": 0x00CF,
      "ETH": 0x00D0,
      "Ntilde": 0x00D1,
      "Ograve": 0x00D2,
      "Oacute": 0x00D3,
      "Ocirc": 0x00D4,
      "Otilde": 0x00D5,
      "Ouml": 0x00D6,
      "times": 0x00D7,
      "Oslash": 0x00D8,
      "Ugrave": 0x00D9,
      "Uacute": 0x00DA,
      "Ucirc": 0x00DB,
      "Uuml": 0x00DC,
      "Yacute": 0x00DD,
      "THORN": 0x00DE,
      "szlig": 0x00DF,
      "agrave": 0x00E0,
      "aacute": 0x00E1,
      "acirc": 0x00E2,
      "atilde": 0x00E3,
      "auml": 0x00E4,
      "aring": 0x00E5,
      "aelig": 0x00E6,
      "ccedil": 0x00E7,
      "egrave": 0x00E8,
      "eacute": 0x00E9,
      "ecirc": 0x00EA,
      "euml": 0x00EB,
      "igrave": 0x00EC,
      "iacute": 0x00ED,
      "icirc": 0x00EE,
      "iuml": 0x00EF,
      "eth": 0x00F0,
      "ntilde": 0x00F1,
      "ograve": 0x00F2,
      "oacute": 0x00F3,
      "ocirc": 0x00F4,
      "otilde": 0x00F5,
      "ouml": 0x00F6,
      "divide": 0x00F7,
      "oslash": 0x00F8,
      "ugrave": 0x00F9,
      "uacute": 0x00FA,
      "ucirc": 0x00FB,
      "uuml": 0x00FC,
      "yacute": 0x00FD,
      "thorn": 0x00FE,
      "yuml": 0x00FF,
      "OElig": 0x0152,
      "oelig": 0x0153,
      "Scaron": 0x0160,
      "scaron": 0x0161,
      "Yuml": 0x0178,
      "fnof": 0x0192,
      "circ": 0x02C6,
      "tilde": 0x02DC,
      "Alpha": 0x0391,
      "Beta": 0x0392,
      "Gamma": 0x0393,
      "Delta": 0x0394,
      "Epsilon": 0x0395,
      "Zeta": 0x0396,
      "Eta": 0x0397,
      "Theta": 0x0398,
      "Iota": 0x0399,
      "Kappa": 0x039A,
      "Lambda": 0x039B,
      "Mu": 0x039C,
      "Nu": 0x039D,
      "Xi": 0x039E,
      "Omicron": 0x039F,
      "Pi": 0x03A0,
      "Rho": 0x03A1,
      "Sigma": 0x03A3,
      "Tau": 0x03A4,
      "Upsilon": 0x03A5,
      "Phi": 0x03A6,
      "Chi": 0x03A7,
      "Psi": 0x03A8,
      "Omega": 0x03A9,
      "alpha": 0x03B1,
      "beta": 0x03B2,
      "gamma": 0x03B3,
      "delta": 0x03B4,
      "epsilon": 0x03B5,
      "zeta": 0x03B6,
      "eta": 0x03B7,
      "theta": 0x03B8,
      "iota": 0x03B9,
      "kappa": 0x03BA,
      "lambda": 0x03BB,
      "mu": 0x03BC,
      "nu": 0x03BD,
      "xi": 0x03BE,
      "omicron": 0x03BF,
      "pi": 0x03C0,
      "rho": 0x03C1,
      "sigmaf": 0x03C2,
      "sigma": 0x03C3,
      "tau": 0x03C4,
      "upsilon": 0x03C5,
      "phi": 0x03C6,
      "chi": 0x03C7,
      "psi": 0x03C8,
      "omega": 0x03C9,
      "thetasym": 0x03D1,
      "upsih": 0x03D2,
      "piv": 0x03D6,
      "ensp": 0x2002,
      "emsp": 0x2003,
      "thinsp": 0x2009,
      "zwnj": 0x200C,
      "zwj": 0x200D,
      "lrm": 0x200E,
      "rlm": 0x200F,
      "ndash": 0x2013,
      "mdash": 0x2014,
      "lsquo": 0x2018,
      "rsquo": 0x2019,
      "sbquo": 0x201A,
      "ldquo": 0x201C,
      "rdquo": 0x201D,
      "bdquo": 0x201E,
      "dagger": 0x2020,
      "Dagger": 0x2021,
      "bull": 0x2022,
      "hellip": 0x2026,
      "permil": 0x2030,
      "prime": 0x2032,
      "Prime": 0x2033,
      "lsaquo": 0x2039,
      "rsaquo": 0x203A,
      "oline": 0x203E,
      "frasl": 0x2044,
      "euro": 0x20AC,
      "image": 0x2111,
      "weierp": 0x2118,
      "real": 0x211C,
      "trade": 0x2122,
      "alefsym": 0x2135,
      "larr": 0x2190,
      "uarr": 0x2191,
      "rarr": 0x2192,
      "darr": 0x2193,
      "harr": 0x2194,
      "crarr": 0x21B5,
      "lArr": 0x21D0,
      "uArr": 0x21D1,
      "rArr": 0x21D2,
      "dArr": 0x21D3,
      "hArr": 0x21D4,
      "forall": 0x2200,
      "part": 0x2202,
      "exist": 0x2203,
      "empty": 0x2205,
      "nabla": 0x2207,
      "isin": 0x2208,
      "notin": 0x2209,
      "ni": 0x220B,
      "prod": 0x220F,
      "sum": 0x2211,
      "minus": 0x2212,
      "lowast": 0x2217,
      "radic": 0x221A,
      "prop": 0x221D,
      "infin": 0x221E,
      "ang": 0x2220,
      "and": 0x2227,
      "or": 0x2228,
      "cap": 0x2229,
      "cup": 0x222A,
      "int": 0x222B,
      "there4": 0x2234,
      "sim": 0x223C,
      "cong": 0x2245,
      "asymp": 0x2248,
      "ne": 0x2260,
      "equiv": 0x2261,
      "le": 0x2264,
      "ge": 0x2265,
      "sub": 0x2282,
      "sup": 0x2283,
      "nsub": 0x2284,
      "sube": 0x2286,
      "supe": 0x2287,
      "oplus": 0x2295,
      "otimes": 0x2297,
      "perp": 0x22A5,
      "sdot": 0x22C5,
      "lceil": 0x2308,
      "rceil": 0x2309,
      "lfloor": 0x230A,
      "rfloor": 0x230B,
      "lang": 0x2329,
      "rang": 0x232A,
      "loz": 0x25CA,
      "spades": 0x2660,
      "clubs": 0x2663,
      "hearts": 0x2665,
      "diams": 0x2666
    };
    function emitFiles(resolver, host, targetSourceFile) {
      var extendsHelper = "\nvar __extends = (this && this.__extends) || function (d, b) {\n    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];\n    function __() { this.constructor = d; }\n    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n};";
      var assignHelper = "\nvar __assign = (this && this.__assign) || Object.assign || function(t) {\n    for (var s, i = 1, n = arguments.length; i < n; i++) {\n        s = arguments[i];\n        for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))\n            t[p] = s[p];\n    }\n    return t;\n};";
      var decorateHelper = "\nvar __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {\n    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\n    if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\n    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\n    return c > 3 && r && Object.defineProperty(target, key, r), r;\n};";
      var metadataHelper = "\nvar __metadata = (this && this.__metadata) || function (k, v) {\n    if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(k, v);\n};";
      var paramHelper = "\nvar __param = (this && this.__param) || function (paramIndex, decorator) {\n    return function (target, key) { decorator(target, key, paramIndex); }\n};";
      var awaiterHelper = "\nvar __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\n    return new (P || (P = Promise))(function (resolve, reject) {\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n        function rejected(value) { try { step(generator.throw(value)); } catch (e) { reject(e); } }\n        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }\n        step((generator = generator.apply(thisArg, _arguments)).next());\n    });\n};";
      var compilerOptions = host.getCompilerOptions();
      var languageVersion = ts.getEmitScriptTarget(compilerOptions);
      var modulekind = ts.getEmitModuleKind(compilerOptions);
      var sourceMapDataList = compilerOptions.sourceMap || compilerOptions.inlineSourceMap ? [] : undefined;
      var emitterDiagnostics = ts.createDiagnosticCollection();
      var emitSkipped = false;
      var newLine = host.getNewLine();
      var emitJavaScript = createFileEmitter();
      ts.forEachExpectedEmitFile(host, emitFile, targetSourceFile);
      return {
        emitSkipped: emitSkipped,
        diagnostics: emitterDiagnostics.getDiagnostics(),
        sourceMaps: sourceMapDataList
      };
      function isUniqueLocalName(name, container) {
        for (var node = container; ts.isNodeDescendentOf(node, container); node = node.nextContainer) {
          if (node.locals && ts.hasProperty(node.locals, name)) {
            if (node.locals[name].flags & (107455 | 1048576 | 8388608)) {
              return false;
            }
          }
        }
        return true;
      }
      function setLabeledJump(state, isBreak, labelText, labelMarker) {
        if (isBreak) {
          if (!state.labeledNonLocalBreaks) {
            state.labeledNonLocalBreaks = {};
          }
          state.labeledNonLocalBreaks[labelText] = labelMarker;
        } else {
          if (!state.labeledNonLocalContinues) {
            state.labeledNonLocalContinues = {};
          }
          state.labeledNonLocalContinues[labelText] = labelMarker;
        }
      }
      function hoistVariableDeclarationFromLoop(state, declaration) {
        if (!state.hoistedLocalVariables) {
          state.hoistedLocalVariables = [];
        }
        visit(declaration.name);
        function visit(node) {
          if (node.kind === 69) {
            state.hoistedLocalVariables.push(node);
          } else {
            for (var _a = 0,
                _b = node.elements; _a < _b.length; _a++) {
              var element = _b[_a];
              visit(element.name);
            }
          }
        }
      }
      function createFileEmitter() {
        var writer = ts.createTextWriter(newLine);
        var write = writer.write,
            writeTextOfNode = writer.writeTextOfNode,
            writeLine = writer.writeLine,
            increaseIndent = writer.increaseIndent,
            decreaseIndent = writer.decreaseIndent;
        var sourceMap = compilerOptions.sourceMap || compilerOptions.inlineSourceMap ? ts.createSourceMapWriter(host, writer) : ts.getNullSourceMapWriter();
        var setSourceFile = sourceMap.setSourceFile,
            emitStart = sourceMap.emitStart,
            emitEnd = sourceMap.emitEnd,
            emitPos = sourceMap.emitPos;
        var currentSourceFile;
        var currentText;
        var currentLineMap;
        var currentFileIdentifiers;
        var renamedDependencies;
        var isEs6Module;
        var isCurrentFileExternalModule;
        var exportFunctionForFile;
        var contextObjectForFile;
        var generatedNameSet;
        var nodeToGeneratedName;
        var computedPropertyNamesToGeneratedNames;
        var decoratedClassAliases;
        var convertedLoopState;
        var extendsEmitted;
        var assignEmitted;
        var decorateEmitted;
        var paramEmitted;
        var awaiterEmitted;
        var tempFlags = 0;
        var tempVariables;
        var tempParameters;
        var externalImports;
        var exportSpecifiers;
        var exportEquals;
        var hasExportStarsToExportValues;
        var detachedCommentsInfo;
        var sourceMapData;
        var isOwnFileEmit;
        var emitLeadingCommentsOfPosition = compilerOptions.removeComments ? function(pos) {} : emitLeadingCommentsOfPositionWorker;
        var setSourceMapWriterEmit = compilerOptions.sourceMap || compilerOptions.inlineSourceMap ? changeSourceMapEmit : function(writer) {};
        var moduleEmitDelegates = (_a = {}, _a[5] = emitES6Module, _a[2] = emitAMDModule, _a[4] = emitSystemModule, _a[3] = emitUMDModule, _a[1] = emitCommonJSModule, _a);
        var bundleEmitDelegates = (_b = {}, _b[5] = function() {}, _b[2] = emitAMDModule, _b[4] = emitSystemModule, _b[3] = function() {}, _b[1] = function() {}, _b);
        return doEmit;
        function doEmit(jsFilePath, sourceMapFilePath, sourceFiles, isBundledEmit) {
          sourceMap.initialize(jsFilePath, sourceMapFilePath, sourceFiles, isBundledEmit);
          generatedNameSet = {};
          nodeToGeneratedName = [];
          decoratedClassAliases = [];
          isOwnFileEmit = !isBundledEmit;
          if (isBundledEmit && modulekind) {
            ts.forEach(sourceFiles, emitEmitHelpers);
          }
          ts.forEach(sourceFiles, emitSourceFile);
          writeLine();
          var sourceMappingURL = sourceMap.getSourceMappingURL();
          if (sourceMappingURL) {
            write("//# sourceMappingURL=" + sourceMappingURL);
          }
          writeEmittedFiles(writer.getText(), jsFilePath, sourceMapFilePath, compilerOptions.emitBOM);
          sourceMap.reset();
          writer.reset();
          currentSourceFile = undefined;
          currentText = undefined;
          currentLineMap = undefined;
          exportFunctionForFile = undefined;
          contextObjectForFile = undefined;
          generatedNameSet = undefined;
          nodeToGeneratedName = undefined;
          decoratedClassAliases = undefined;
          computedPropertyNamesToGeneratedNames = undefined;
          convertedLoopState = undefined;
          extendsEmitted = false;
          decorateEmitted = false;
          paramEmitted = false;
          awaiterEmitted = false;
          assignEmitted = false;
          tempFlags = 0;
          tempVariables = undefined;
          tempParameters = undefined;
          externalImports = undefined;
          exportSpecifiers = undefined;
          exportEquals = undefined;
          hasExportStarsToExportValues = undefined;
          detachedCommentsInfo = undefined;
          sourceMapData = undefined;
          isEs6Module = false;
          renamedDependencies = undefined;
          isCurrentFileExternalModule = false;
        }
        function emitSourceFile(sourceFile) {
          currentSourceFile = sourceFile;
          currentText = sourceFile.text;
          currentLineMap = ts.getLineStarts(sourceFile);
          exportFunctionForFile = undefined;
          contextObjectForFile = undefined;
          isEs6Module = sourceFile.symbol && sourceFile.symbol.exports && !!sourceFile.symbol.exports["___esModule"];
          renamedDependencies = sourceFile.renamedDependencies;
          currentFileIdentifiers = sourceFile.identifiers;
          isCurrentFileExternalModule = ts.isExternalModule(sourceFile);
          setSourceFile(sourceFile);
          emitNodeWithCommentsAndWithoutSourcemap(sourceFile);
        }
        function isUniqueName(name) {
          return !resolver.hasGlobalName(name) && !ts.hasProperty(currentFileIdentifiers, name) && !ts.hasProperty(generatedNameSet, name);
        }
        function makeTempVariableName(flags) {
          if (flags && !(tempFlags & flags)) {
            var name_22 = flags === 268435456 ? "_i" : "_n";
            if (isUniqueName(name_22)) {
              tempFlags |= flags;
              return name_22;
            }
          }
          while (true) {
            var count = tempFlags & 268435455;
            tempFlags++;
            if (count !== 8 && count !== 13) {
              var name_23 = count < 26 ? "_" + String.fromCharCode(97 + count) : "_" + (count - 26);
              if (isUniqueName(name_23)) {
                return name_23;
              }
            }
          }
        }
        function makeUniqueName(baseName) {
          if (baseName.charCodeAt(baseName.length - 1) !== 95) {
            baseName += "_";
          }
          var i = 1;
          while (true) {
            var generatedName = baseName + i;
            if (isUniqueName(generatedName)) {
              return generatedNameSet[generatedName] = generatedName;
            }
            i++;
          }
        }
        function generateNameForModuleOrEnum(node) {
          var name = node.name.text;
          return isUniqueLocalName(name, node) ? name : makeUniqueName(name);
        }
        function generateNameForImportOrExportDeclaration(node) {
          var expr = ts.getExternalModuleName(node);
          var baseName = expr.kind === 9 ? ts.escapeIdentifier(ts.makeIdentifierFromModuleName(expr.text)) : "module";
          return makeUniqueName(baseName);
        }
        function generateNameForExportDefault() {
          return makeUniqueName("default");
        }
        function generateNameForClassExpression() {
          return makeUniqueName("class");
        }
        function generateNameForNode(node) {
          switch (node.kind) {
            case 69:
              return makeUniqueName(node.text);
            case 221:
            case 220:
              return generateNameForModuleOrEnum(node);
            case 225:
            case 231:
              return generateNameForImportOrExportDeclaration(node);
            case 216:
            case 217:
            case 230:
              return generateNameForExportDefault();
            case 189:
              return generateNameForClassExpression();
          }
        }
        function getGeneratedNameForNode(node) {
          var id = ts.getNodeId(node);
          return nodeToGeneratedName[id] || (nodeToGeneratedName[id] = ts.unescapeIdentifier(generateNameForNode(node)));
        }
        function writeEmittedFiles(emitOutput, jsFilePath, sourceMapFilePath, writeByteOrderMark) {
          if (compilerOptions.sourceMap && !compilerOptions.inlineSourceMap) {
            ts.writeFile(host, emitterDiagnostics, sourceMapFilePath, sourceMap.getText(), false);
          }
          if (sourceMapDataList) {
            sourceMapDataList.push(sourceMap.getSourceMapData());
          }
          ts.writeFile(host, emitterDiagnostics, jsFilePath, emitOutput, writeByteOrderMark);
        }
        function createTempVariable(flags) {
          var result = ts.createSynthesizedNode(69);
          result.text = makeTempVariableName(flags);
          return result;
        }
        function recordTempDeclaration(name) {
          if (!tempVariables) {
            tempVariables = [];
          }
          tempVariables.push(name);
        }
        function createAndRecordTempVariable(flags) {
          var temp = createTempVariable(flags);
          recordTempDeclaration(temp);
          return temp;
        }
        function emitTempDeclarations(newLine) {
          if (tempVariables) {
            if (newLine) {
              writeLine();
            } else {
              write(" ");
            }
            write("var ");
            emitCommaList(tempVariables);
            write(";");
          }
        }
        function emitToken(tokenKind, startPos, emitFn) {
          var tokenStartPos = ts.skipTrivia(currentText, startPos);
          emitPos(tokenStartPos);
          var tokenString = ts.tokenToString(tokenKind);
          if (emitFn) {
            emitFn();
          } else {
            write(tokenString);
          }
          var tokenEndPos = tokenStartPos + tokenString.length;
          emitPos(tokenEndPos);
          return tokenEndPos;
        }
        function emitOptional(prefix, node) {
          if (node) {
            write(prefix);
            emit(node);
          }
        }
        function emitParenthesizedIf(node, parenthesized) {
          if (parenthesized) {
            write("(");
          }
          emit(node);
          if (parenthesized) {
            write(")");
          }
        }
        function emitLinePreservingList(parent, nodes, allowTrailingComma, spacesBetweenBraces) {
          ts.Debug.assert(nodes.length > 0);
          increaseIndent();
          if (nodeStartPositionsAreOnSameLine(parent, nodes[0])) {
            if (spacesBetweenBraces) {
              write(" ");
            }
          } else {
            writeLine();
          }
          for (var i = 0,
              n = nodes.length; i < n; i++) {
            if (i) {
              if (nodeEndIsOnSameLineAsNodeStart(nodes[i - 1], nodes[i])) {
                write(", ");
              } else {
                write(",");
                writeLine();
              }
            }
            emit(nodes[i]);
          }
          if (nodes.hasTrailingComma && allowTrailingComma) {
            write(",");
          }
          decreaseIndent();
          if (nodeEndPositionsAreOnSameLine(parent, ts.lastOrUndefined(nodes))) {
            if (spacesBetweenBraces) {
              write(" ");
            }
          } else {
            writeLine();
          }
        }
        function emitList(nodes, start, count, multiLine, trailingComma, leadingComma, noTrailingNewLine, emitNode) {
          if (!emitNode) {
            emitNode = emit;
          }
          for (var i = 0; i < count; i++) {
            if (multiLine) {
              if (i || leadingComma) {
                write(",");
              }
              writeLine();
            } else {
              if (i || leadingComma) {
                write(", ");
              }
            }
            var node = nodes[start + i];
            emitTrailingCommentsOfPosition(node.pos);
            emitNode(node);
            leadingComma = true;
          }
          if (trailingComma) {
            write(",");
          }
          if (multiLine && !noTrailingNewLine) {
            writeLine();
          }
          return count;
        }
        function emitCommaList(nodes) {
          if (nodes) {
            emitList(nodes, 0, nodes.length, false, false);
          }
        }
        function emitLines(nodes) {
          emitLinesStartingAt(nodes, 0);
        }
        function emitLinesStartingAt(nodes, startIndex) {
          for (var i = startIndex; i < nodes.length; i++) {
            writeLine();
            emit(nodes[i]);
          }
        }
        function isBinaryOrOctalIntegerLiteral(node, text) {
          if (node.kind === 8 && text.length > 1) {
            switch (text.charCodeAt(1)) {
              case 98:
              case 66:
              case 111:
              case 79:
                return true;
            }
          }
          return false;
        }
        function emitLiteral(node) {
          var text = getLiteralText(node);
          if ((compilerOptions.sourceMap || compilerOptions.inlineSourceMap) && (node.kind === 9 || ts.isTemplateLiteralKind(node.kind))) {
            writer.writeLiteral(text);
          } else if (languageVersion < 2 && isBinaryOrOctalIntegerLiteral(node, text)) {
            write(node.text);
          } else {
            write(text);
          }
        }
        function getLiteralText(node) {
          if (languageVersion < 2 && (ts.isTemplateLiteralKind(node.kind) || node.hasExtendedUnicodeEscape)) {
            return getQuotedEscapedLiteralText("\"", node.text, "\"");
          }
          if (node.parent) {
            return ts.getTextOfNodeFromSourceText(currentText, node);
          }
          switch (node.kind) {
            case 9:
              return getQuotedEscapedLiteralText("\"", node.text, "\"");
            case 11:
              return getQuotedEscapedLiteralText("`", node.text, "`");
            case 12:
              return getQuotedEscapedLiteralText("`", node.text, "${");
            case 13:
              return getQuotedEscapedLiteralText("}", node.text, "${");
            case 14:
              return getQuotedEscapedLiteralText("}", node.text, "`");
            case 8:
              return node.text;
          }
          ts.Debug.fail("Literal kind '" + node.kind + "' not accounted for.");
        }
        function getQuotedEscapedLiteralText(leftQuote, text, rightQuote) {
          return leftQuote + ts.escapeNonAsciiCharacters(ts.escapeString(text)) + rightQuote;
        }
        function emitDownlevelRawTemplateLiteral(node) {
          var text = ts.getTextOfNodeFromSourceText(currentText, node);
          var isLast = node.kind === 11 || node.kind === 14;
          text = text.substring(1, text.length - (isLast ? 1 : 2));
          text = text.replace(/\r\n?/g, "\n");
          text = ts.escapeString(text);
          write("\"" + text + "\"");
        }
        function emitDownlevelTaggedTemplateArray(node, literalEmitter) {
          write("[");
          if (node.template.kind === 11) {
            literalEmitter(node.template);
          } else {
            literalEmitter(node.template.head);
            ts.forEach(node.template.templateSpans, function(child) {
              write(", ");
              literalEmitter(child.literal);
            });
          }
          write("]");
        }
        function emitDownlevelTaggedTemplate(node) {
          var tempVariable = createAndRecordTempVariable(0);
          write("(");
          emit(tempVariable);
          write(" = ");
          emitDownlevelTaggedTemplateArray(node, emit);
          write(", ");
          emit(tempVariable);
          write(".raw = ");
          emitDownlevelTaggedTemplateArray(node, emitDownlevelRawTemplateLiteral);
          write(", ");
          emitParenthesizedIf(node.tag, needsParenthesisForPropertyAccessOrInvocation(node.tag));
          write("(");
          emit(tempVariable);
          if (node.template.kind === 186) {
            ts.forEach(node.template.templateSpans, function(templateSpan) {
              write(", ");
              var needsParens = templateSpan.expression.kind === 184 && templateSpan.expression.operatorToken.kind === 24;
              emitParenthesizedIf(templateSpan.expression, needsParens);
            });
          }
          write("))");
        }
        function emitTemplateExpression(node) {
          if (languageVersion >= 2) {
            ts.forEachChild(node, emit);
            return;
          }
          var emitOuterParens = ts.isExpression(node.parent) && templateNeedsParens(node, node.parent);
          if (emitOuterParens) {
            write("(");
          }
          var headEmitted = false;
          if (shouldEmitTemplateHead()) {
            emitLiteral(node.head);
            headEmitted = true;
          }
          for (var i = 0,
              n = node.templateSpans.length; i < n; i++) {
            var templateSpan = node.templateSpans[i];
            var needsParens = templateSpan.expression.kind !== 175 && comparePrecedenceToBinaryPlus(templateSpan.expression) !== 1;
            if (i > 0 || headEmitted) {
              write(" + ");
            }
            emitParenthesizedIf(templateSpan.expression, needsParens);
            if (templateSpan.literal.text.length !== 0) {
              write(" + ");
              emitLiteral(templateSpan.literal);
            }
          }
          if (emitOuterParens) {
            write(")");
          }
          function shouldEmitTemplateHead() {
            ts.Debug.assert(node.templateSpans.length !== 0);
            return node.head.text.length !== 0 || node.templateSpans[0].literal.text.length === 0;
          }
          function templateNeedsParens(template, parent) {
            switch (parent.kind) {
              case 171:
              case 172:
                return parent.expression === template;
              case 173:
              case 175:
                return false;
              default:
                return comparePrecedenceToBinaryPlus(parent) !== -1;
            }
          }
          function comparePrecedenceToBinaryPlus(expression) {
            switch (expression.kind) {
              case 184:
                switch (expression.operatorToken.kind) {
                  case 37:
                  case 39:
                  case 40:
                    return 1;
                  case 35:
                  case 36:
                    return 0;
                  default:
                    return -1;
                }
              case 187:
              case 185:
                return -1;
              default:
                return 1;
            }
          }
        }
        function emitTemplateSpan(span) {
          emit(span.expression);
          emit(span.literal);
        }
        function jsxEmitReact(node) {
          function emitTagName(name) {
            if (name.kind === 69 && ts.isIntrinsicJsxName(name.text)) {
              write("\"");
              emit(name);
              write("\"");
            } else {
              emit(name);
            }
          }
          function emitAttributeName(name) {
            if (/^[A-Za-z_]\w*$/.test(name.text)) {
              emit(name);
            } else {
              write("\"");
              emit(name);
              write("\"");
            }
          }
          function emitJsxAttribute(node) {
            emitAttributeName(node.name);
            write(": ");
            if (node.initializer) {
              emit(node.initializer);
            } else {
              write("true");
            }
          }
          function emitJsxElement(openingNode, children) {
            var syntheticReactRef = ts.createSynthesizedNode(69);
            syntheticReactRef.text = compilerOptions.reactNamespace ? compilerOptions.reactNamespace : "React";
            syntheticReactRef.parent = openingNode;
            emitLeadingComments(openingNode);
            emitExpressionIdentifier(syntheticReactRef);
            write(".createElement(");
            emitTagName(openingNode.tagName);
            write(", ");
            if (openingNode.attributes.length === 0) {
              write("null");
            } else {
              var attrs = openingNode.attributes;
              if (ts.forEach(attrs, function(attr) {
                return attr.kind === 242;
              })) {
                write("__assign(");
                var haveOpenedObjectLiteral = false;
                for (var i = 0; i < attrs.length; i++) {
                  if (attrs[i].kind === 242) {
                    if (i === 0) {
                      write("{}, ");
                    }
                    if (haveOpenedObjectLiteral) {
                      write("}");
                      haveOpenedObjectLiteral = false;
                    }
                    if (i > 0) {
                      write(", ");
                    }
                    emit(attrs[i].expression);
                  } else {
                    ts.Debug.assert(attrs[i].kind === 241);
                    if (haveOpenedObjectLiteral) {
                      write(", ");
                    } else {
                      haveOpenedObjectLiteral = true;
                      if (i > 0) {
                        write(", ");
                      }
                      write("{");
                    }
                    emitJsxAttribute(attrs[i]);
                  }
                }
                if (haveOpenedObjectLiteral)
                  write("}");
                write(")");
              } else {
                write("{");
                for (var i = 0,
                    n = attrs.length; i < n; i++) {
                  if (i > 0) {
                    write(", ");
                  }
                  emitJsxAttribute(attrs[i]);
                }
                write("}");
              }
            }
            if (children) {
              for (var i = 0; i < children.length; i++) {
                if (children[i].kind === 243 && !(children[i].expression)) {
                  continue;
                }
                if (children[i].kind === 239) {
                  var text = getTextToEmit(children[i]);
                  if (text !== undefined) {
                    write(", \"");
                    write(text);
                    write("\"");
                  }
                } else {
                  write(", ");
                  emit(children[i]);
                }
              }
            }
            write(")");
            emitTrailingComments(openingNode);
          }
          if (node.kind === 236) {
            emitJsxElement(node.openingElement, node.children);
          } else {
            ts.Debug.assert(node.kind === 237);
            emitJsxElement(node);
          }
        }
        function jsxEmitPreserve(node) {
          function emitJsxAttribute(node) {
            emit(node.name);
            if (node.initializer) {
              write("=");
              emit(node.initializer);
            }
          }
          function emitJsxSpreadAttribute(node) {
            write("{...");
            emit(node.expression);
            write("}");
          }
          function emitAttributes(attribs) {
            for (var i = 0,
                n = attribs.length; i < n; i++) {
              if (i > 0) {
                write(" ");
              }
              if (attribs[i].kind === 242) {
                emitJsxSpreadAttribute(attribs[i]);
              } else {
                ts.Debug.assert(attribs[i].kind === 241);
                emitJsxAttribute(attribs[i]);
              }
            }
          }
          function emitJsxOpeningOrSelfClosingElement(node) {
            write("<");
            emit(node.tagName);
            if (node.attributes.length > 0 || (node.kind === 237)) {
              write(" ");
            }
            emitAttributes(node.attributes);
            if (node.kind === 237) {
              write("/>");
            } else {
              write(">");
            }
          }
          function emitJsxClosingElement(node) {
            write("</");
            emit(node.tagName);
            write(">");
          }
          function emitJsxElement(node) {
            emitJsxOpeningOrSelfClosingElement(node.openingElement);
            for (var i = 0,
                n = node.children.length; i < n; i++) {
              emit(node.children[i]);
            }
            emitJsxClosingElement(node.closingElement);
          }
          if (node.kind === 236) {
            emitJsxElement(node);
          } else {
            ts.Debug.assert(node.kind === 237);
            emitJsxOpeningOrSelfClosingElement(node);
          }
        }
        function emitExpressionForPropertyName(node) {
          ts.Debug.assert(node.kind !== 166);
          if (node.kind === 9) {
            emitLiteral(node);
          } else if (node.kind === 137) {
            if (ts.nodeIsDecorated(node.parent)) {
              if (!computedPropertyNamesToGeneratedNames) {
                computedPropertyNamesToGeneratedNames = [];
              }
              var generatedName = computedPropertyNamesToGeneratedNames[ts.getNodeId(node)];
              if (generatedName) {
                write(generatedName);
                return;
              }
              generatedName = createAndRecordTempVariable(0).text;
              computedPropertyNamesToGeneratedNames[ts.getNodeId(node)] = generatedName;
              write(generatedName);
              write(" = ");
            }
            emit(node.expression);
          } else {
            write("\"");
            if (node.kind === 8) {
              write(node.text);
            } else {
              writeTextOfNode(currentText, node);
            }
            write("\"");
          }
        }
        function isExpressionIdentifier(node) {
          var parent = node.parent;
          switch (parent.kind) {
            case 167:
            case 192:
            case 184:
            case 171:
            case 244:
            case 137:
            case 185:
            case 140:
            case 178:
            case 200:
            case 170:
            case 230:
            case 198:
            case 191:
            case 202:
            case 203:
            case 204:
            case 199:
            case 240:
            case 237:
            case 238:
            case 242:
            case 243:
            case 172:
            case 175:
            case 183:
            case 182:
            case 207:
            case 249:
            case 188:
            case 209:
            case 173:
            case 193:
            case 211:
            case 174:
            case 179:
            case 180:
            case 201:
            case 208:
            case 187:
              return true;
            case 166:
            case 250:
            case 139:
            case 248:
            case 142:
            case 214:
              return parent.initializer === node;
            case 169:
              return parent.expression === node;
            case 177:
            case 176:
              return parent.body === node;
            case 224:
              return parent.moduleReference === node;
            case 136:
              return parent.left === node;
          }
          return false;
        }
        function emitExpressionIdentifier(node) {
          var container = resolver.getReferencedExportContainer(node);
          if (container) {
            if (container.kind === 251) {
              if (modulekind !== 5 && modulekind !== 4) {
                write("exports.");
              }
            } else {
              write(getGeneratedNameForNode(container));
              write(".");
            }
          } else {
            if (modulekind !== 5) {
              var declaration = resolver.getReferencedImportDeclaration(node);
              if (declaration) {
                if (declaration.kind === 226) {
                  write(getGeneratedNameForNode(declaration.parent));
                  write(languageVersion === 0 ? "[\"default\"]" : ".default");
                  return;
                } else if (declaration.kind === 229) {
                  write(getGeneratedNameForNode(declaration.parent.parent.parent));
                  var name_24 = declaration.propertyName || declaration.name;
                  var identifier = ts.getTextOfNodeFromSourceText(currentText, name_24);
                  if (languageVersion === 0 && identifier === "default") {
                    write("[\"default\"]");
                  } else {
                    write(".");
                    write(identifier);
                  }
                  return;
                }
              }
            }
            if (languageVersion < 2) {
              var declaration = resolver.getReferencedDeclarationWithCollidingName(node);
              if (declaration) {
                write(getGeneratedNameForNode(declaration.name));
                return;
              }
            } else if (resolver.getNodeCheckFlags(node) & 1048576) {
              var declaration = resolver.getReferencedValueDeclaration(node);
              if (declaration) {
                var classAlias = decoratedClassAliases[ts.getNodeId(declaration)];
                if (classAlias !== undefined) {
                  write(classAlias);
                  return;
                }
              }
            }
          }
          if (ts.nodeIsSynthesized(node)) {
            write(node.text);
          } else {
            writeTextOfNode(currentText, node);
          }
        }
        function isNameOfNestedBlockScopedRedeclarationOrCapturedBinding(node) {
          if (languageVersion < 2) {
            var parent_8 = node.parent;
            switch (parent_8.kind) {
              case 166:
              case 217:
              case 220:
              case 214:
                return parent_8.name === node && resolver.isDeclarationWithCollidingName(parent_8);
            }
          }
          return false;
        }
        function emitIdentifier(node) {
          if (convertedLoopState) {
            if (node.text == "arguments" && resolver.isArgumentsLocalBinding(node)) {
              var name_25 = convertedLoopState.argumentsName || (convertedLoopState.argumentsName = makeUniqueName("arguments"));
              write(name_25);
              return;
            }
          }
          if (!node.parent) {
            write(node.text);
          } else if (isExpressionIdentifier(node)) {
            emitExpressionIdentifier(node);
          } else if (isNameOfNestedBlockScopedRedeclarationOrCapturedBinding(node)) {
            write(getGeneratedNameForNode(node));
          } else if (ts.nodeIsSynthesized(node)) {
            write(node.text);
          } else {
            writeTextOfNode(currentText, node);
          }
        }
        function emitThis(node) {
          if (resolver.getNodeCheckFlags(node) & 2) {
            write("_this");
          } else if (convertedLoopState) {
            write(convertedLoopState.thisName || (convertedLoopState.thisName = makeUniqueName("this")));
          } else {
            write("this");
          }
        }
        function emitSuper(node) {
          if (languageVersion >= 2) {
            write("super");
          } else {
            var flags = resolver.getNodeCheckFlags(node);
            if (flags & 256) {
              write("_super.prototype");
            } else {
              write("_super");
            }
          }
        }
        function emitObjectBindingPattern(node) {
          write("{ ");
          var elements = node.elements;
          emitList(elements, 0, elements.length, false, elements.hasTrailingComma);
          write(" }");
        }
        function emitArrayBindingPattern(node) {
          write("[");
          var elements = node.elements;
          emitList(elements, 0, elements.length, false, elements.hasTrailingComma);
          write("]");
        }
        function emitBindingElement(node) {
          if (node.propertyName) {
            emit(node.propertyName);
            write(": ");
          }
          if (node.dotDotDotToken) {
            write("...");
          }
          if (ts.isBindingPattern(node.name)) {
            emit(node.name);
          } else {
            emitModuleMemberName(node);
          }
          emitOptional(" = ", node.initializer);
        }
        function emitSpreadElementExpression(node) {
          write("...");
          emit(node.expression);
        }
        function emitYieldExpression(node) {
          write(ts.tokenToString(114));
          if (node.asteriskToken) {
            write("*");
          }
          if (node.expression) {
            write(" ");
            emit(node.expression);
          }
        }
        function emitAwaitExpression(node) {
          var needsParenthesis = needsParenthesisForAwaitExpressionAsYield(node);
          if (needsParenthesis) {
            write("(");
          }
          write(ts.tokenToString(114));
          write(" ");
          emit(node.expression);
          if (needsParenthesis) {
            write(")");
          }
        }
        function needsParenthesisForAwaitExpressionAsYield(node) {
          if (node.parent.kind === 184 && !ts.isAssignmentOperator(node.parent.operatorToken.kind)) {
            return true;
          } else if (node.parent.kind === 185 && node.parent.condition === node) {
            return true;
          }
          return false;
        }
        function needsParenthesisForPropertyAccessOrInvocation(node) {
          switch (node.kind) {
            case 69:
            case 167:
            case 169:
            case 170:
            case 171:
            case 175:
              return false;
          }
          return true;
        }
        function emitListWithSpread(elements, needsUniqueCopy, multiLine, trailingComma, useConcat) {
          var pos = 0;
          var group = 0;
          var length = elements.length;
          while (pos < length) {
            if (group === 1 && useConcat) {
              write(".concat(");
            } else if (group > 0) {
              write(", ");
            }
            var e = elements[pos];
            if (e.kind === 188) {
              e = e.expression;
              emitParenthesizedIf(e, group === 0 && needsParenthesisForPropertyAccessOrInvocation(e));
              pos++;
              if (pos === length && group === 0 && needsUniqueCopy && e.kind !== 167) {
                write(".slice()");
              }
            } else {
              var i = pos;
              while (i < length && elements[i].kind !== 188) {
                i++;
              }
              write("[");
              if (multiLine) {
                increaseIndent();
              }
              emitList(elements, pos, i - pos, multiLine, trailingComma && i === length);
              if (multiLine) {
                decreaseIndent();
              }
              write("]");
              pos = i;
            }
            group++;
          }
          if (group > 1) {
            if (useConcat) {
              write(")");
            }
          }
        }
        function isSpreadElementExpression(node) {
          return node.kind === 188;
        }
        function emitArrayLiteral(node) {
          var elements = node.elements;
          if (elements.length === 0) {
            write("[]");
          } else if (languageVersion >= 2 || !ts.forEach(elements, isSpreadElementExpression)) {
            write("[");
            emitLinePreservingList(node, node.elements, elements.hasTrailingComma, false);
            write("]");
          } else {
            emitListWithSpread(elements, true, (node.flags & 1024) !== 0, elements.hasTrailingComma, true);
          }
        }
        function emitObjectLiteralBody(node, numElements) {
          if (numElements === 0) {
            write("{}");
            return;
          }
          write("{");
          if (numElements > 0) {
            var properties = node.properties;
            if (numElements === properties.length) {
              emitLinePreservingList(node, properties, languageVersion >= 1, true);
            } else {
              var multiLine = (node.flags & 1024) !== 0;
              if (!multiLine) {
                write(" ");
              } else {
                increaseIndent();
              }
              emitList(properties, 0, numElements, multiLine, false);
              if (!multiLine) {
                write(" ");
              } else {
                decreaseIndent();
              }
            }
          }
          write("}");
        }
        function emitDownlevelObjectLiteralWithComputedProperties(node, firstComputedPropertyIndex) {
          var multiLine = (node.flags & 1024) !== 0;
          var properties = node.properties;
          write("(");
          if (multiLine) {
            increaseIndent();
          }
          var tempVar = createAndRecordTempVariable(0);
          emit(tempVar);
          write(" = ");
          emitObjectLiteralBody(node, firstComputedPropertyIndex);
          for (var i = firstComputedPropertyIndex,
              n = properties.length; i < n; i++) {
            writeComma();
            var property = properties[i];
            emitStart(property);
            if (property.kind === 146 || property.kind === 147) {
              var accessors = ts.getAllAccessorDeclarations(node.properties, property);
              if (property !== accessors.firstAccessor) {
                continue;
              }
              write("Object.defineProperty(");
              emit(tempVar);
              write(", ");
              emitStart(node.name);
              emitExpressionForPropertyName(property.name);
              emitEnd(property.name);
              write(", {");
              increaseIndent();
              if (accessors.getAccessor) {
                writeLine();
                emitLeadingComments(accessors.getAccessor);
                write("get: ");
                emitStart(accessors.getAccessor);
                write("function ");
                emitSignatureAndBody(accessors.getAccessor);
                emitEnd(accessors.getAccessor);
                emitTrailingComments(accessors.getAccessor);
                write(",");
              }
              if (accessors.setAccessor) {
                writeLine();
                emitLeadingComments(accessors.setAccessor);
                write("set: ");
                emitStart(accessors.setAccessor);
                write("function ");
                emitSignatureAndBody(accessors.setAccessor);
                emitEnd(accessors.setAccessor);
                emitTrailingComments(accessors.setAccessor);
                write(",");
              }
              writeLine();
              write("enumerable: true,");
              writeLine();
              write("configurable: true");
              decreaseIndent();
              writeLine();
              write("})");
              emitEnd(property);
            } else {
              emitLeadingComments(property);
              emitStart(property.name);
              emit(tempVar);
              emitMemberAccessForPropertyName(property.name);
              emitEnd(property.name);
              write(" = ");
              if (property.kind === 248) {
                emit(property.initializer);
              } else if (property.kind === 249) {
                emitExpressionIdentifier(property.name);
              } else if (property.kind === 144) {
                emitFunctionDeclaration(property);
              } else {
                ts.Debug.fail("ObjectLiteralElement type not accounted for: " + property.kind);
              }
            }
            emitEnd(property);
          }
          writeComma();
          emit(tempVar);
          if (multiLine) {
            decreaseIndent();
            writeLine();
          }
          write(")");
          function writeComma() {
            if (multiLine) {
              write(",");
              writeLine();
            } else {
              write(", ");
            }
          }
        }
        function emitObjectLiteral(node) {
          var properties = node.properties;
          if (languageVersion < 2) {
            var numProperties = properties.length;
            var numInitialNonComputedProperties = numProperties;
            for (var i = 0,
                n = properties.length; i < n; i++) {
              if (properties[i].name.kind === 137) {
                numInitialNonComputedProperties = i;
                break;
              }
            }
            var hasComputedProperty = numInitialNonComputedProperties !== properties.length;
            if (hasComputedProperty) {
              emitDownlevelObjectLiteralWithComputedProperties(node, numInitialNonComputedProperties);
              return;
            }
          }
          emitObjectLiteralBody(node, properties.length);
        }
        function createBinaryExpression(left, operator, right, startsOnNewLine) {
          var result = ts.createSynthesizedNode(184, startsOnNewLine);
          result.operatorToken = ts.createSynthesizedNode(operator);
          result.left = left;
          result.right = right;
          return result;
        }
        function createPropertyAccessExpression(expression, name) {
          var result = ts.createSynthesizedNode(169);
          result.expression = parenthesizeForAccess(expression);
          result.dotToken = ts.createSynthesizedNode(21);
          result.name = name;
          return result;
        }
        function createElementAccessExpression(expression, argumentExpression) {
          var result = ts.createSynthesizedNode(170);
          result.expression = parenthesizeForAccess(expression);
          result.argumentExpression = argumentExpression;
          return result;
        }
        function parenthesizeForAccess(expr) {
          while (expr.kind === 174 || expr.kind === 192) {
            expr = expr.expression;
          }
          if (ts.isLeftHandSideExpression(expr) && expr.kind !== 172 && expr.kind !== 8) {
            return expr;
          }
          var node = ts.createSynthesizedNode(175);
          node.expression = expr;
          return node;
        }
        function emitComputedPropertyName(node) {
          write("[");
          emitExpressionForPropertyName(node);
          write("]");
        }
        function emitMethod(node) {
          if (languageVersion >= 2 && node.asteriskToken) {
            write("*");
          }
          emit(node.name);
          if (languageVersion < 2) {
            write(": function ");
          }
          emitSignatureAndBody(node);
        }
        function emitPropertyAssignment(node) {
          emit(node.name);
          write(": ");
          emitTrailingCommentsOfPosition(node.initializer.pos);
          emit(node.initializer);
        }
        function isNamespaceExportReference(node) {
          var container = resolver.getReferencedExportContainer(node);
          return container && container.kind !== 251;
        }
        function emitShorthandPropertyAssignment(node) {
          writeTextOfNode(currentText, node.name);
          if (modulekind !== 5 || isNamespaceExportReference(node.name)) {
            write(": ");
            emit(node.name);
          }
          if (languageVersion >= 2 && node.objectAssignmentInitializer) {
            write(" = ");
            emit(node.objectAssignmentInitializer);
          }
        }
        function tryEmitConstantValue(node) {
          var constantValue = tryGetConstEnumValue(node);
          if (constantValue !== undefined) {
            write(constantValue.toString());
            if (!compilerOptions.removeComments) {
              var propertyName = node.kind === 169 ? ts.declarationNameToString(node.name) : ts.getTextOfNode(node.argumentExpression);
              write(" /* " + propertyName + " */");
            }
            return true;
          }
          return false;
        }
        function tryGetConstEnumValue(node) {
          if (compilerOptions.isolatedModules) {
            return undefined;
          }
          return node.kind === 169 || node.kind === 170 ? resolver.getConstantValue(node) : undefined;
        }
        function indentIfOnDifferentLines(parent, node1, node2, valueToWriteWhenNotIndenting) {
          var realNodesAreOnDifferentLines = !ts.nodeIsSynthesized(parent) && !nodeEndIsOnSameLineAsNodeStart(node1, node2);
          var synthesizedNodeIsOnDifferentLine = synthesizedNodeStartsOnNewLine(node2);
          if (realNodesAreOnDifferentLines || synthesizedNodeIsOnDifferentLine) {
            increaseIndent();
            writeLine();
            return true;
          } else {
            if (valueToWriteWhenNotIndenting) {
              write(valueToWriteWhenNotIndenting);
            }
            return false;
          }
        }
        function emitPropertyAccess(node) {
          if (tryEmitConstantValue(node)) {
            return;
          }
          if (languageVersion === 2 && node.expression.kind === 95 && isInAsyncMethodWithSuperInES6(node)) {
            var name_26 = ts.createSynthesizedNode(9);
            name_26.text = node.name.text;
            emitSuperAccessInAsyncMethod(node.expression, name_26);
            return;
          }
          emit(node.expression);
          var indentedBeforeDot = indentIfOnDifferentLines(node, node.expression, node.dotToken);
          var shouldEmitSpace = false;
          if (!indentedBeforeDot) {
            if (node.expression.kind === 8) {
              var text = ts.getTextOfNodeFromSourceText(currentText, node.expression);
              shouldEmitSpace = text.indexOf(ts.tokenToString(21)) < 0;
            } else {
              var constantValue = tryGetConstEnumValue(node.expression);
              shouldEmitSpace = isFinite(constantValue) && Math.floor(constantValue) === constantValue;
            }
          }
          if (shouldEmitSpace) {
            write(" .");
          } else {
            write(".");
          }
          var indentedAfterDot = indentIfOnDifferentLines(node, node.dotToken, node.name);
          emit(node.name);
          decreaseIndentIf(indentedBeforeDot, indentedAfterDot);
        }
        function emitQualifiedName(node) {
          emit(node.left);
          write(".");
          emit(node.right);
        }
        function emitQualifiedNameAsExpression(node, useFallback) {
          if (node.left.kind === 69) {
            emitEntityNameAsExpression(node.left, useFallback);
          } else if (useFallback) {
            var temp = createAndRecordTempVariable(0);
            write("(");
            emitNodeWithoutSourceMap(temp);
            write(" = ");
            emitEntityNameAsExpression(node.left, true);
            write(") && ");
            emitNodeWithoutSourceMap(temp);
          } else {
            emitEntityNameAsExpression(node.left, false);
          }
          write(".");
          emit(node.right);
        }
        function emitEntityNameAsExpression(node, useFallback) {
          switch (node.kind) {
            case 69:
              if (useFallback) {
                write("typeof ");
                emitExpressionIdentifier(node);
                write(" !== 'undefined' && ");
              }
              emitExpressionIdentifier(node);
              break;
            case 136:
              emitQualifiedNameAsExpression(node, useFallback);
              break;
            default:
              emitNodeWithoutSourceMap(node);
              break;
          }
        }
        function emitIndexedAccess(node) {
          if (tryEmitConstantValue(node)) {
            return;
          }
          if (languageVersion === 2 && node.expression.kind === 95 && isInAsyncMethodWithSuperInES6(node)) {
            emitSuperAccessInAsyncMethod(node.expression, node.argumentExpression);
            return;
          }
          emit(node.expression);
          write("[");
          emit(node.argumentExpression);
          write("]");
        }
        function hasSpreadElement(elements) {
          return ts.forEach(elements, function(e) {
            return e.kind === 188;
          });
        }
        function skipParentheses(node) {
          while (node.kind === 175 || node.kind === 174 || node.kind === 192) {
            node = node.expression;
          }
          return node;
        }
        function emitCallTarget(node) {
          if (node.kind === 69 || node.kind === 97 || node.kind === 95) {
            emit(node);
            return node;
          }
          var temp = createAndRecordTempVariable(0);
          write("(");
          emit(temp);
          write(" = ");
          emit(node);
          write(")");
          return temp;
        }
        function emitCallWithSpread(node) {
          var target;
          var expr = skipParentheses(node.expression);
          if (expr.kind === 169) {
            target = emitCallTarget(expr.expression);
            write(".");
            emit(expr.name);
          } else if (expr.kind === 170) {
            target = emitCallTarget(expr.expression);
            write("[");
            emit(expr.argumentExpression);
            write("]");
          } else if (expr.kind === 95) {
            target = expr;
            write("_super");
          } else {
            emit(node.expression);
          }
          write(".apply(");
          if (target) {
            if (target.kind === 95) {
              emitThis(target);
            } else {
              emit(target);
            }
          } else {
            write("void 0");
          }
          write(", ");
          emitListWithSpread(node.arguments, false, false, false, true);
          write(")");
        }
        function isInAsyncMethodWithSuperInES6(node) {
          if (languageVersion === 2) {
            var container = ts.getSuperContainer(node, false);
            if (container && resolver.getNodeCheckFlags(container) & (2048 | 4096)) {
              return true;
            }
          }
          return false;
        }
        function emitSuperAccessInAsyncMethod(superNode, argumentExpression) {
          var container = ts.getSuperContainer(superNode, false);
          var isSuperBinding = resolver.getNodeCheckFlags(container) & 4096;
          write("_super(");
          emit(argumentExpression);
          write(isSuperBinding ? ").value" : ")");
        }
        function emitCallExpression(node) {
          if (languageVersion < 2 && hasSpreadElement(node.arguments)) {
            emitCallWithSpread(node);
            return;
          }
          var expression = node.expression;
          var superCall = false;
          var isAsyncMethodWithSuper = false;
          if (expression.kind === 95) {
            emitSuper(expression);
            superCall = true;
          } else {
            superCall = ts.isSuperPropertyOrElementAccess(expression);
            isAsyncMethodWithSuper = superCall && isInAsyncMethodWithSuperInES6(node);
            emit(expression);
          }
          if (superCall && (languageVersion < 2 || isAsyncMethodWithSuper)) {
            write(".call(");
            emitThis(expression);
            if (node.arguments.length) {
              write(", ");
              emitCommaList(node.arguments);
            }
            write(")");
          } else {
            write("(");
            emitCommaList(node.arguments);
            write(")");
          }
        }
        function emitNewExpression(node) {
          write("new ");
          if (languageVersion === 1 && node.arguments && hasSpreadElement(node.arguments)) {
            write("(");
            var target = emitCallTarget(node.expression);
            write(".bind.apply(");
            emit(target);
            write(", [void 0].concat(");
            emitListWithSpread(node.arguments, false, false, false, false);
            write(")))");
            write("()");
          } else {
            emit(node.expression);
            if (node.arguments) {
              write("(");
              emitCommaList(node.arguments);
              write(")");
            }
          }
        }
        function emitTaggedTemplateExpression(node) {
          if (languageVersion >= 2) {
            emit(node.tag);
            write(" ");
            emit(node.template);
          } else {
            emitDownlevelTaggedTemplate(node);
          }
        }
        function emitParenExpression(node) {
          if (!ts.nodeIsSynthesized(node) && node.parent.kind !== 177) {
            if (node.expression.kind === 174 || node.expression.kind === 192) {
              var operand = node.expression.expression;
              while (operand.kind === 174 || operand.kind === 192) {
                operand = operand.expression;
              }
              if (operand.kind !== 182 && operand.kind !== 180 && operand.kind !== 179 && operand.kind !== 178 && operand.kind !== 183 && operand.kind !== 172 && !(operand.kind === 171 && node.parent.kind === 172) && !(operand.kind === 176 && node.parent.kind === 171) && !(operand.kind === 8 && node.parent.kind === 169)) {
                emit(operand);
                return;
              }
            }
          }
          write("(");
          emit(node.expression);
          write(")");
        }
        function emitDeleteExpression(node) {
          write(ts.tokenToString(78));
          write(" ");
          emit(node.expression);
        }
        function emitVoidExpression(node) {
          write(ts.tokenToString(103));
          write(" ");
          emit(node.expression);
        }
        function emitTypeOfExpression(node) {
          write(ts.tokenToString(101));
          write(" ");
          emit(node.expression);
        }
        function isNameOfExportedSourceLevelDeclarationInSystemExternalModule(node) {
          if (!isCurrentFileSystemExternalModule() || node.kind !== 69 || ts.nodeIsSynthesized(node)) {
            return false;
          }
          var isVariableDeclarationOrBindingElement = node.parent && (node.parent.kind === 214 || node.parent.kind === 166);
          var targetDeclaration = isVariableDeclarationOrBindingElement ? node.parent : resolver.getReferencedValueDeclaration(node);
          return isSourceFileLevelDeclarationInSystemJsModule(targetDeclaration, true);
        }
        function emitPrefixUnaryExpression(node) {
          var exportChanged = (node.operator === 41 || node.operator === 42) && isNameOfExportedSourceLevelDeclarationInSystemExternalModule(node.operand);
          if (exportChanged) {
            write(exportFunctionForFile + "(\"");
            emitNodeWithoutSourceMap(node.operand);
            write("\", ");
          }
          write(ts.tokenToString(node.operator));
          if (node.operand.kind === 182) {
            var operand = node.operand;
            if (node.operator === 35 && (operand.operator === 35 || operand.operator === 41)) {
              write(" ");
            } else if (node.operator === 36 && (operand.operator === 36 || operand.operator === 42)) {
              write(" ");
            }
          }
          emit(node.operand);
          if (exportChanged) {
            write(")");
          }
        }
        function emitPostfixUnaryExpression(node) {
          var exportChanged = isNameOfExportedSourceLevelDeclarationInSystemExternalModule(node.operand);
          if (exportChanged) {
            write("(" + exportFunctionForFile + "(\"");
            emitNodeWithoutSourceMap(node.operand);
            write("\", ");
            write(ts.tokenToString(node.operator));
            emit(node.operand);
            if (node.operator === 41) {
              write(") - 1)");
            } else {
              write(") + 1)");
            }
          } else {
            emit(node.operand);
            write(ts.tokenToString(node.operator));
          }
        }
        function shouldHoistDeclarationInSystemJsModule(node) {
          return isSourceFileLevelDeclarationInSystemJsModule(node, false);
        }
        function isSourceFileLevelDeclarationInSystemJsModule(node, isExported) {
          if (!node || !isCurrentFileSystemExternalModule()) {
            return false;
          }
          var current = ts.getRootDeclaration(node).parent;
          while (current) {
            if (current.kind === 251) {
              return !isExported || ((ts.getCombinedNodeFlags(node) & 2) !== 0);
            } else if (ts.isDeclaration(current)) {
              return false;
            } else {
              current = current.parent;
            }
          }
        }
        function emitExponentiationOperator(node) {
          var leftHandSideExpression = node.left;
          if (node.operatorToken.kind === 60) {
            var synthesizedLHS = void 0;
            var shouldEmitParentheses = false;
            if (ts.isElementAccessExpression(leftHandSideExpression)) {
              shouldEmitParentheses = true;
              write("(");
              synthesizedLHS = ts.createSynthesizedNode(170, false);
              var identifier = emitTempVariableAssignment(leftHandSideExpression.expression, false, false);
              synthesizedLHS.expression = identifier;
              if (leftHandSideExpression.argumentExpression.kind !== 8 && leftHandSideExpression.argumentExpression.kind !== 9) {
                var tempArgumentExpression = createAndRecordTempVariable(268435456);
                synthesizedLHS.argumentExpression = tempArgumentExpression;
                emitAssignment(tempArgumentExpression, leftHandSideExpression.argumentExpression, true, leftHandSideExpression.expression);
              } else {
                synthesizedLHS.argumentExpression = leftHandSideExpression.argumentExpression;
              }
              write(", ");
            } else if (ts.isPropertyAccessExpression(leftHandSideExpression)) {
              shouldEmitParentheses = true;
              write("(");
              synthesizedLHS = ts.createSynthesizedNode(169, false);
              var identifier = emitTempVariableAssignment(leftHandSideExpression.expression, false, false);
              synthesizedLHS.expression = identifier;
              synthesizedLHS.dotToken = leftHandSideExpression.dotToken;
              synthesizedLHS.name = leftHandSideExpression.name;
              write(", ");
            }
            emit(synthesizedLHS || leftHandSideExpression);
            write(" = ");
            write("Math.pow(");
            emit(synthesizedLHS || leftHandSideExpression);
            write(", ");
            emit(node.right);
            write(")");
            if (shouldEmitParentheses) {
              write(")");
            }
          } else {
            write("Math.pow(");
            emit(leftHandSideExpression);
            write(", ");
            emit(node.right);
            write(")");
          }
        }
        function emitBinaryExpression(node) {
          if (languageVersion < 2 && node.operatorToken.kind === 56 && (node.left.kind === 168 || node.left.kind === 167)) {
            emitDestructuring(node, node.parent.kind === 198);
          } else {
            var exportChanged = node.operatorToken.kind >= 56 && node.operatorToken.kind <= 68 && isNameOfExportedSourceLevelDeclarationInSystemExternalModule(node.left);
            if (exportChanged) {
              write(exportFunctionForFile + "(\"");
              emitNodeWithoutSourceMap(node.left);
              write("\", ");
            }
            if (node.operatorToken.kind === 38 || node.operatorToken.kind === 60) {
              emitExponentiationOperator(node);
            } else {
              emit(node.left);
              var indentedBeforeOperator = indentIfOnDifferentLines(node, node.left, node.operatorToken, node.operatorToken.kind !== 24 ? " " : undefined);
              write(ts.tokenToString(node.operatorToken.kind));
              var indentedAfterOperator = indentIfOnDifferentLines(node, node.operatorToken, node.right, " ");
              emit(node.right);
              decreaseIndentIf(indentedBeforeOperator, indentedAfterOperator);
            }
            if (exportChanged) {
              write(")");
            }
          }
        }
        function synthesizedNodeStartsOnNewLine(node) {
          return ts.nodeIsSynthesized(node) && node.startsOnNewLine;
        }
        function emitConditionalExpression(node) {
          emit(node.condition);
          var indentedBeforeQuestion = indentIfOnDifferentLines(node, node.condition, node.questionToken, " ");
          write("?");
          var indentedAfterQuestion = indentIfOnDifferentLines(node, node.questionToken, node.whenTrue, " ");
          emit(node.whenTrue);
          decreaseIndentIf(indentedBeforeQuestion, indentedAfterQuestion);
          var indentedBeforeColon = indentIfOnDifferentLines(node, node.whenTrue, node.colonToken, " ");
          write(":");
          var indentedAfterColon = indentIfOnDifferentLines(node, node.colonToken, node.whenFalse, " ");
          emit(node.whenFalse);
          decreaseIndentIf(indentedBeforeColon, indentedAfterColon);
        }
        function decreaseIndentIf(value1, value2) {
          if (value1) {
            decreaseIndent();
          }
          if (value2) {
            decreaseIndent();
          }
        }
        function isSingleLineEmptyBlock(node) {
          if (node && node.kind === 195) {
            var block = node;
            return block.statements.length === 0 && nodeEndIsOnSameLineAsNodeStart(block, block);
          }
        }
        function emitBlock(node) {
          if (isSingleLineEmptyBlock(node)) {
            emitToken(15, node.pos);
            write(" ");
            emitToken(16, node.statements.end);
            return;
          }
          emitToken(15, node.pos);
          increaseIndent();
          if (node.kind === 222) {
            ts.Debug.assert(node.parent.kind === 221);
            emitCaptureThisForNodeIfNecessary(node.parent);
          }
          emitLines(node.statements);
          if (node.kind === 222) {
            emitTempDeclarations(true);
          }
          decreaseIndent();
          writeLine();
          emitToken(16, node.statements.end);
        }
        function emitEmbeddedStatement(node) {
          if (node.kind === 195) {
            write(" ");
            emit(node);
          } else {
            increaseIndent();
            writeLine();
            emit(node);
            decreaseIndent();
          }
        }
        function emitExpressionStatement(node) {
          emitParenthesizedIf(node.expression, node.expression.kind === 177);
          write(";");
        }
        function emitIfStatement(node) {
          var endPos = emitToken(88, node.pos);
          write(" ");
          endPos = emitToken(17, endPos);
          emit(node.expression);
          emitToken(18, node.expression.end);
          emitEmbeddedStatement(node.thenStatement);
          if (node.elseStatement) {
            writeLine();
            emitToken(80, node.thenStatement.end);
            if (node.elseStatement.kind === 199) {
              write(" ");
              emit(node.elseStatement);
            } else {
              emitEmbeddedStatement(node.elseStatement);
            }
          }
        }
        function emitDoStatement(node) {
          emitLoop(node, emitDoStatementWorker);
        }
        function emitDoStatementWorker(node, loop) {
          write("do");
          if (loop) {
            emitConvertedLoopCall(loop, true);
          } else {
            emitNormalLoopBody(node, true);
          }
          if (node.statement.kind === 195) {
            write(" ");
          } else {
            writeLine();
          }
          write("while (");
          emit(node.expression);
          write(");");
        }
        function emitWhileStatement(node) {
          emitLoop(node, emitWhileStatementWorker);
        }
        function emitWhileStatementWorker(node, loop) {
          write("while (");
          emit(node.expression);
          write(")");
          if (loop) {
            emitConvertedLoopCall(loop, true);
          } else {
            emitNormalLoopBody(node, true);
          }
        }
        function tryEmitStartOfVariableDeclarationList(decl) {
          if (shouldHoistVariable(decl, true)) {
            return false;
          }
          if (convertedLoopState && (ts.getCombinedNodeFlags(decl) & 24576) === 0) {
            for (var _a = 0,
                _b = decl.declarations; _a < _b.length; _a++) {
              var varDecl = _b[_a];
              hoistVariableDeclarationFromLoop(convertedLoopState, varDecl);
            }
            return false;
          }
          emitStart(decl);
          if (decl && languageVersion >= 2) {
            if (ts.isLet(decl)) {
              write("let ");
            } else if (ts.isConst(decl)) {
              write("const ");
            } else {
              write("var ");
            }
          } else {
            write("var ");
          }
          return true;
        }
        function emitVariableDeclarationListSkippingUninitializedEntries(list) {
          var started = false;
          for (var _a = 0,
              _b = list.declarations; _a < _b.length; _a++) {
            var decl = _b[_a];
            if (!decl.initializer) {
              continue;
            }
            if (!started) {
              started = true;
            } else {
              write(", ");
            }
            emit(decl);
          }
          return started;
        }
        function shouldConvertLoopBody(node) {
          return languageVersion < 2 && (resolver.getNodeCheckFlags(node) & 65536) !== 0;
        }
        function emitLoop(node, loopEmitter) {
          var shouldConvert = shouldConvertLoopBody(node);
          if (!shouldConvert) {
            loopEmitter(node, undefined);
          } else {
            var loop = convertLoopBody(node);
            if (node.parent.kind === 210) {
              emitLabelAndColon(node.parent);
            }
            loopEmitter(node, loop);
          }
        }
        function convertLoopBody(node) {
          var functionName = makeUniqueName("_loop");
          var loopInitializer;
          switch (node.kind) {
            case 202:
            case 203:
            case 204:
              var initializer = node.initializer;
              if (initializer && initializer.kind === 215) {
                loopInitializer = node.initializer;
              }
              break;
          }
          var loopParameters;
          var loopOutParameters;
          if (loopInitializer && (ts.getCombinedNodeFlags(loopInitializer) & 24576)) {
            loopParameters = [];
            for (var _a = 0,
                _b = loopInitializer.declarations; _a < _b.length; _a++) {
              var varDeclaration = _b[_a];
              processVariableDeclaration(varDeclaration.name);
            }
          }
          var bodyIsBlock = node.statement.kind === 195;
          var paramList = loopParameters ? loopParameters.join(", ") : "";
          writeLine();
          write("var " + functionName + " = function(" + paramList + ")");
          var convertedOuterLoopState = convertedLoopState;
          convertedLoopState = {loopOutParameters: loopOutParameters};
          if (convertedOuterLoopState) {
            if (convertedOuterLoopState.argumentsName) {
              convertedLoopState.argumentsName = convertedOuterLoopState.argumentsName;
            }
            if (convertedOuterLoopState.thisName) {
              convertedLoopState.thisName = convertedOuterLoopState.thisName;
            }
            if (convertedOuterLoopState.hoistedLocalVariables) {
              convertedLoopState.hoistedLocalVariables = convertedOuterLoopState.hoistedLocalVariables;
            }
          }
          write(" {");
          writeLine();
          increaseIndent();
          if (bodyIsBlock) {
            emitLines(node.statement.statements);
          } else {
            emit(node.statement);
          }
          writeLine();
          copyLoopOutParameters(convertedLoopState, 1, true);
          decreaseIndent();
          writeLine();
          write("};");
          writeLine();
          if (loopOutParameters) {
            write("var ");
            for (var i = 0; i < loopOutParameters.length; i++) {
              if (i !== 0) {
                write(", ");
              }
              write(loopOutParameters[i].outParamName);
            }
            write(";");
            writeLine();
          }
          if (convertedLoopState.argumentsName) {
            if (convertedOuterLoopState) {
              convertedOuterLoopState.argumentsName = convertedLoopState.argumentsName;
            } else {
              write("var " + convertedLoopState.argumentsName + " = arguments;");
              writeLine();
            }
          }
          if (convertedLoopState.thisName) {
            if (convertedOuterLoopState) {
              convertedOuterLoopState.thisName = convertedLoopState.thisName;
            } else {
              write("var " + convertedLoopState.thisName + " = this;");
              writeLine();
            }
          }
          if (convertedLoopState.hoistedLocalVariables) {
            if (convertedOuterLoopState) {
              convertedOuterLoopState.hoistedLocalVariables = convertedLoopState.hoistedLocalVariables;
            } else {
              write("var ");
              var seen = void 0;
              for (var _c = 0,
                  _d = convertedLoopState.hoistedLocalVariables; _c < _d.length; _c++) {
                var id = _d[_c];
                if (!seen) {
                  seen = {};
                } else {
                  write(", ");
                }
                if (!ts.hasProperty(seen, id.text)) {
                  emit(id);
                  seen[id.text] = id.text;
                }
              }
              write(";");
              writeLine();
            }
          }
          var currentLoopState = convertedLoopState;
          convertedLoopState = convertedOuterLoopState;
          return {
            functionName: functionName,
            paramList: paramList,
            state: currentLoopState
          };
          function processVariableDeclaration(name) {
            if (name.kind === 69) {
              var nameText = isNameOfNestedBlockScopedRedeclarationOrCapturedBinding(name) ? getGeneratedNameForNode(name) : name.text;
              loopParameters.push(nameText);
              if (resolver.getNodeCheckFlags(name.parent) & 2097152) {
                var reassignedVariable = {
                  originalName: name,
                  outParamName: makeUniqueName("out_" + nameText)
                };
                (loopOutParameters || (loopOutParameters = [])).push(reassignedVariable);
              }
            } else {
              for (var _a = 0,
                  _b = name.elements; _a < _b.length; _a++) {
                var element = _b[_a];
                processVariableDeclaration(element.name);
              }
            }
          }
        }
        function emitNormalLoopBody(node, emitAsEmbeddedStatement) {
          var saveAllowedNonLabeledJumps;
          if (convertedLoopState) {
            saveAllowedNonLabeledJumps = convertedLoopState.allowedNonLabeledJumps;
            convertedLoopState.allowedNonLabeledJumps = 2 | 4;
          }
          if (emitAsEmbeddedStatement) {
            emitEmbeddedStatement(node.statement);
          } else if (node.statement.kind === 195) {
            emitLines(node.statement.statements);
          } else {
            writeLine();
            emit(node.statement);
          }
          if (convertedLoopState) {
            convertedLoopState.allowedNonLabeledJumps = saveAllowedNonLabeledJumps;
          }
        }
        function copyLoopOutParameters(state, copyDirection, emitAsStatements) {
          if (state.loopOutParameters) {
            for (var _a = 0,
                _b = state.loopOutParameters; _a < _b.length; _a++) {
              var outParam = _b[_a];
              if (copyDirection === 0) {
                emitIdentifier(outParam.originalName);
                write(" = " + outParam.outParamName);
              } else {
                write(outParam.outParamName + " = ");
                emitIdentifier(outParam.originalName);
              }
              if (emitAsStatements) {
                write(";");
                writeLine();
              } else {
                write(", ");
              }
            }
          }
        }
        function emitConvertedLoopCall(loop, emitAsBlock) {
          if (emitAsBlock) {
            write(" {");
            writeLine();
            increaseIndent();
          }
          var isSimpleLoop = !loop.state.nonLocalJumps && !loop.state.labeledNonLocalBreaks && !loop.state.labeledNonLocalContinues;
          var loopResult = makeUniqueName("state");
          if (!isSimpleLoop) {
            write("var " + loopResult + " = ");
          }
          write(loop.functionName + "(" + loop.paramList + ");");
          writeLine();
          copyLoopOutParameters(loop.state, 0, true);
          if (!isSimpleLoop) {
            writeLine();
            if (loop.state.nonLocalJumps & 8) {
              write("if (typeof " + loopResult + " === \"object\") ");
              if (convertedLoopState) {
                write("return " + loopResult + ";");
                convertedLoopState.nonLocalJumps |= 8;
              } else {
                write("return " + loopResult + ".value;");
              }
              writeLine();
            }
            if (loop.state.nonLocalJumps & 2) {
              write("if (" + loopResult + " === \"break\") break;");
              writeLine();
            }
            if (loop.state.nonLocalJumps & 4) {
              write("if (" + loopResult + " === \"continue\") continue;");
              writeLine();
            }
            emitDispatchTableForLabeledJumps(loopResult, loop.state, convertedLoopState);
          }
          if (emitAsBlock) {
            writeLine();
            decreaseIndent();
            write("}");
          }
          function emitDispatchTableForLabeledJumps(loopResultVariable, currentLoop, outerLoop) {
            if (!currentLoop.labeledNonLocalBreaks && !currentLoop.labeledNonLocalContinues) {
              return;
            }
            write("switch(" + loopResultVariable + ") {");
            increaseIndent();
            emitDispatchEntriesForLabeledJumps(currentLoop.labeledNonLocalBreaks, true, loopResultVariable, outerLoop);
            emitDispatchEntriesForLabeledJumps(currentLoop.labeledNonLocalContinues, false, loopResultVariable, outerLoop);
            decreaseIndent();
            writeLine();
            write("}");
          }
          function emitDispatchEntriesForLabeledJumps(table, isBreak, loopResultVariable, outerLoop) {
            if (!table) {
              return;
            }
            for (var labelText in table) {
              var labelMarker = table[labelText];
              writeLine();
              write("case \"" + labelMarker + "\": ");
              if (!outerLoop || (outerLoop.labels && outerLoop.labels[labelText])) {
                if (isBreak) {
                  write("break ");
                } else {
                  write("continue ");
                }
                write(labelText + ";");
              } else {
                setLabeledJump(outerLoop, isBreak, labelText, labelMarker);
                write("return " + loopResultVariable + ";");
              }
            }
          }
        }
        function emitForStatement(node) {
          emitLoop(node, emitForStatementWorker);
        }
        function emitForStatementWorker(node, loop) {
          var endPos = emitToken(86, node.pos);
          write(" ");
          endPos = emitToken(17, endPos);
          if (node.initializer && node.initializer.kind === 215) {
            var variableDeclarationList = node.initializer;
            var startIsEmitted = tryEmitStartOfVariableDeclarationList(variableDeclarationList);
            if (startIsEmitted) {
              emitCommaList(variableDeclarationList.declarations);
            } else {
              emitVariableDeclarationListSkippingUninitializedEntries(variableDeclarationList);
            }
          } else if (node.initializer) {
            emit(node.initializer);
          }
          write(";");
          emitOptional(" ", node.condition);
          write(";");
          emitOptional(" ", node.incrementor);
          write(")");
          if (loop) {
            emitConvertedLoopCall(loop, true);
          } else {
            emitNormalLoopBody(node, true);
          }
        }
        function emitForInOrForOfStatement(node) {
          if (languageVersion < 2 && node.kind === 204) {
            emitLoop(node, emitDownLevelForOfStatementWorker);
          } else {
            emitLoop(node, emitForInOrForOfStatementWorker);
          }
        }
        function emitForInOrForOfStatementWorker(node, loop) {
          var endPos = emitToken(86, node.pos);
          write(" ");
          endPos = emitToken(17, endPos);
          if (node.initializer.kind === 215) {
            var variableDeclarationList = node.initializer;
            if (variableDeclarationList.declarations.length >= 1) {
              tryEmitStartOfVariableDeclarationList(variableDeclarationList);
              emit(variableDeclarationList.declarations[0]);
            }
          } else {
            emit(node.initializer);
          }
          if (node.kind === 203) {
            write(" in ");
          } else {
            write(" of ");
          }
          emit(node.expression);
          emitToken(18, node.expression.end);
          if (loop) {
            emitConvertedLoopCall(loop, true);
          } else {
            emitNormalLoopBody(node, true);
          }
        }
        function emitDownLevelForOfStatementWorker(node, loop) {
          var endPos = emitToken(86, node.pos);
          write(" ");
          endPos = emitToken(17, endPos);
          var counter = createTempVariable(268435456);
          var rhsReference = ts.createSynthesizedNode(69);
          rhsReference.text = node.expression.kind === 69 ? makeUniqueName(node.expression.text) : makeTempVariableName(0);
          emitStart(node.expression);
          write("var ");
          emitNodeWithoutSourceMap(counter);
          write(" = 0");
          emitEnd(node.expression);
          write(", ");
          emitStart(node.expression);
          emitNodeWithoutSourceMap(rhsReference);
          write(" = ");
          emitNodeWithoutSourceMap(node.expression);
          emitEnd(node.expression);
          write("; ");
          emitStart(node.expression);
          emitNodeWithoutSourceMap(counter);
          write(" < ");
          emitNodeWithCommentsAndWithoutSourcemap(rhsReference);
          write(".length");
          emitEnd(node.expression);
          write("; ");
          emitStart(node.expression);
          emitNodeWithoutSourceMap(counter);
          write("++");
          emitEnd(node.expression);
          emitToken(18, node.expression.end);
          write(" {");
          writeLine();
          increaseIndent();
          var rhsIterationValue = createElementAccessExpression(rhsReference, counter);
          emitStart(node.initializer);
          if (node.initializer.kind === 215) {
            write("var ");
            var variableDeclarationList = node.initializer;
            if (variableDeclarationList.declarations.length > 0) {
              var declaration = variableDeclarationList.declarations[0];
              if (ts.isBindingPattern(declaration.name)) {
                emitDestructuring(declaration, false, rhsIterationValue);
              } else {
                emitNodeWithCommentsAndWithoutSourcemap(declaration);
                write(" = ");
                emitNodeWithoutSourceMap(rhsIterationValue);
              }
            } else {
              emitNodeWithoutSourceMap(createTempVariable(0));
              write(" = ");
              emitNodeWithoutSourceMap(rhsIterationValue);
            }
          } else {
            var assignmentExpression = createBinaryExpression(node.initializer, 56, rhsIterationValue, false);
            if (node.initializer.kind === 167 || node.initializer.kind === 168) {
              emitDestructuring(assignmentExpression, true, undefined);
            } else {
              emitNodeWithCommentsAndWithoutSourcemap(assignmentExpression);
            }
          }
          emitEnd(node.initializer);
          write(";");
          if (loop) {
            writeLine();
            emitConvertedLoopCall(loop, false);
          } else {
            emitNormalLoopBody(node, false);
          }
          writeLine();
          decreaseIndent();
          write("}");
        }
        function emitBreakOrContinueStatement(node) {
          if (convertedLoopState) {
            var jump = node.kind === 206 ? 2 : 4;
            var canUseBreakOrContinue = (node.label && convertedLoopState.labels && convertedLoopState.labels[node.label.text]) || (!node.label && (convertedLoopState.allowedNonLabeledJumps & jump));
            if (!canUseBreakOrContinue) {
              write("return ");
              copyLoopOutParameters(convertedLoopState, 1, false);
              if (!node.label) {
                if (node.kind === 206) {
                  convertedLoopState.nonLocalJumps |= 2;
                  write("\"break\";");
                } else {
                  convertedLoopState.nonLocalJumps |= 4;
                  write("\"continue\";");
                }
              } else {
                var labelMarker = void 0;
                if (node.kind === 206) {
                  labelMarker = "break-" + node.label.text;
                  setLabeledJump(convertedLoopState, true, node.label.text, labelMarker);
                } else {
                  labelMarker = "continue-" + node.label.text;
                  setLabeledJump(convertedLoopState, false, node.label.text, labelMarker);
                }
                write("\"" + labelMarker + "\";");
              }
              return;
            }
          }
          emitToken(node.kind === 206 ? 70 : 75, node.pos);
          emitOptional(" ", node.label);
          write(";");
        }
        function emitReturnStatement(node) {
          if (convertedLoopState) {
            convertedLoopState.nonLocalJumps |= 8;
            write("return { value: ");
            if (node.expression) {
              emit(node.expression);
            } else {
              write("void 0");
            }
            write(" };");
            return;
          }
          emitToken(94, node.pos);
          emitOptional(" ", node.expression);
          write(";");
        }
        function emitWithStatement(node) {
          write("with (");
          emit(node.expression);
          write(")");
          emitEmbeddedStatement(node.statement);
        }
        function emitSwitchStatement(node) {
          var endPos = emitToken(96, node.pos);
          write(" ");
          emitToken(17, endPos);
          emit(node.expression);
          endPos = emitToken(18, node.expression.end);
          write(" ");
          var saveAllowedNonLabeledJumps;
          if (convertedLoopState) {
            saveAllowedNonLabeledJumps = convertedLoopState.allowedNonLabeledJumps;
            convertedLoopState.allowedNonLabeledJumps |= 2;
          }
          emitCaseBlock(node.caseBlock, endPos);
          if (convertedLoopState) {
            convertedLoopState.allowedNonLabeledJumps = saveAllowedNonLabeledJumps;
          }
        }
        function emitCaseBlock(node, startPos) {
          emitToken(15, startPos);
          increaseIndent();
          emitLines(node.clauses);
          decreaseIndent();
          writeLine();
          emitToken(16, node.clauses.end);
        }
        function nodeStartPositionsAreOnSameLine(node1, node2) {
          return ts.getLineOfLocalPositionFromLineMap(currentLineMap, ts.skipTrivia(currentText, node1.pos)) === ts.getLineOfLocalPositionFromLineMap(currentLineMap, ts.skipTrivia(currentText, node2.pos));
        }
        function nodeEndPositionsAreOnSameLine(node1, node2) {
          return ts.getLineOfLocalPositionFromLineMap(currentLineMap, node1.end) === ts.getLineOfLocalPositionFromLineMap(currentLineMap, node2.end);
        }
        function nodeEndIsOnSameLineAsNodeStart(node1, node2) {
          return ts.getLineOfLocalPositionFromLineMap(currentLineMap, node1.end) === ts.getLineOfLocalPositionFromLineMap(currentLineMap, ts.skipTrivia(currentText, node2.pos));
        }
        function emitCaseOrDefaultClause(node) {
          if (node.kind === 244) {
            write("case ");
            emit(node.expression);
            write(":");
          } else {
            write("default:");
          }
          if (node.statements.length === 1 && nodeStartPositionsAreOnSameLine(node, node.statements[0])) {
            write(" ");
            emit(node.statements[0]);
          } else {
            increaseIndent();
            emitLines(node.statements);
            decreaseIndent();
          }
        }
        function emitThrowStatement(node) {
          write("throw ");
          emit(node.expression);
          write(";");
        }
        function emitTryStatement(node) {
          write("try ");
          emit(node.tryBlock);
          emit(node.catchClause);
          if (node.finallyBlock) {
            writeLine();
            write("finally ");
            emit(node.finallyBlock);
          }
        }
        function emitCatchClause(node) {
          writeLine();
          var endPos = emitToken(72, node.pos);
          write(" ");
          emitToken(17, endPos);
          emit(node.variableDeclaration);
          emitToken(18, node.variableDeclaration ? node.variableDeclaration.end : endPos);
          write(" ");
          emitBlock(node.block);
        }
        function emitDebuggerStatement(node) {
          emitToken(76, node.pos);
          write(";");
        }
        function emitLabelAndColon(node) {
          emit(node.label);
          write(": ");
        }
        function emitLabeledStatement(node) {
          if (!ts.isIterationStatement(node.statement, false) || !shouldConvertLoopBody(node.statement)) {
            emitLabelAndColon(node);
          }
          if (convertedLoopState) {
            if (!convertedLoopState.labels) {
              convertedLoopState.labels = {};
            }
            convertedLoopState.labels[node.label.text] = node.label.text;
          }
          emit(node.statement);
          if (convertedLoopState) {
            convertedLoopState.labels[node.label.text] = undefined;
          }
        }
        function getContainingModule(node) {
          do {
            node = node.parent;
          } while (node && node.kind !== 221);
          return node;
        }
        function emitContainingModuleName(node) {
          var container = getContainingModule(node);
          write(container ? getGeneratedNameForNode(container) : "exports");
        }
        function emitModuleMemberName(node) {
          emitStart(node.name);
          if (ts.getCombinedNodeFlags(node) & 2) {
            var container = getContainingModule(node);
            if (container) {
              write(getGeneratedNameForNode(container));
              write(".");
            } else if (modulekind !== 5 && modulekind !== 4) {
              write("exports.");
            }
          }
          emitNodeWithCommentsAndWithoutSourcemap(node.name);
          emitEnd(node.name);
        }
        function createVoidZero() {
          var zero = ts.createSynthesizedNode(8);
          zero.text = "0";
          var result = ts.createSynthesizedNode(180);
          result.expression = zero;
          return result;
        }
        function emitEs6ExportDefaultCompat(node) {
          if (node.parent.kind === 251) {
            ts.Debug.assert(!!(node.flags & 512) || node.kind === 230);
            if (modulekind === 1 || modulekind === 2 || modulekind === 3) {
              if (!isEs6Module) {
                if (languageVersion !== 0) {
                  write("Object.defineProperty(exports, \"__esModule\", { value: true });");
                  writeLine();
                } else {
                  write("exports.__esModule = true;");
                  writeLine();
                }
              }
            }
          }
        }
        function emitExportMemberAssignment(node) {
          if (node.flags & 2) {
            writeLine();
            emitStart(node);
            if (modulekind === 4 && node.parent === currentSourceFile) {
              write(exportFunctionForFile + "(\"");
              if (node.flags & 512) {
                write("default");
              } else {
                emitNodeWithCommentsAndWithoutSourcemap(node.name);
              }
              write("\", ");
              emitDeclarationName(node);
              write(")");
            } else {
              if (node.flags & 512) {
                emitEs6ExportDefaultCompat(node);
                if (languageVersion === 0) {
                  write("exports[\"default\"]");
                } else {
                  write("exports.default");
                }
              } else {
                emitModuleMemberName(node);
              }
              write(" = ");
              emitDeclarationName(node);
            }
            emitEnd(node);
            write(";");
          }
        }
        function emitExportMemberAssignments(name) {
          if (modulekind === 4) {
            return;
          }
          if (!exportEquals && exportSpecifiers && ts.hasProperty(exportSpecifiers, name.text)) {
            for (var _a = 0,
                _b = exportSpecifiers[name.text]; _a < _b.length; _a++) {
              var specifier = _b[_a];
              writeLine();
              emitStart(specifier.name);
              emitContainingModuleName(specifier);
              write(".");
              emitNodeWithCommentsAndWithoutSourcemap(specifier.name);
              emitEnd(specifier.name);
              write(" = ");
              emitExpressionIdentifier(name);
              write(";");
            }
          }
        }
        function emitExportSpecifierInSystemModule(specifier) {
          ts.Debug.assert(modulekind === 4);
          if (!resolver.getReferencedValueDeclaration(specifier.propertyName || specifier.name) && !resolver.isValueAliasDeclaration(specifier)) {
            return;
          }
          writeLine();
          emitStart(specifier.name);
          write(exportFunctionForFile + "(\"");
          emitNodeWithCommentsAndWithoutSourcemap(specifier.name);
          write("\", ");
          emitExpressionIdentifier(specifier.propertyName || specifier.name);
          write(")");
          emitEnd(specifier.name);
          write(";");
        }
        function emitAssignment(name, value, shouldEmitCommaBeforeAssignment, nodeForSourceMap) {
          if (shouldEmitCommaBeforeAssignment) {
            write(", ");
          }
          var exportChanged = isNameOfExportedSourceLevelDeclarationInSystemExternalModule(name);
          if (exportChanged) {
            write(exportFunctionForFile + "(\"");
            emitNodeWithCommentsAndWithoutSourcemap(name);
            write("\", ");
          }
          var isVariableDeclarationOrBindingElement = name.parent && (name.parent.kind === 214 || name.parent.kind === 166);
          emitStart(isFirstVariableDeclaration(nodeForSourceMap) ? nodeForSourceMap.parent : nodeForSourceMap);
          withTemporaryNoSourceMap(function() {
            if (isVariableDeclarationOrBindingElement) {
              emitModuleMemberName(name.parent);
            } else {
              emit(name);
            }
            write(" = ");
            emit(value);
          });
          emitEnd(nodeForSourceMap, true);
          if (exportChanged) {
            write(")");
          }
        }
        function emitTempVariableAssignment(expression, canDefineTempVariablesInPlace, shouldEmitCommaBeforeAssignment, sourceMapNode) {
          var identifier = createTempVariable(0);
          if (!canDefineTempVariablesInPlace) {
            recordTempDeclaration(identifier);
          }
          emitAssignment(identifier, expression, shouldEmitCommaBeforeAssignment, sourceMapNode || expression.parent);
          return identifier;
        }
        function isFirstVariableDeclaration(root) {
          return root.kind === 214 && root.parent.kind === 215 && root.parent.declarations[0] === root;
        }
        function emitDestructuring(root, isAssignmentExpressionStatement, value) {
          var emitCount = 0;
          var canDefineTempVariablesInPlace = false;
          if (root.kind === 214) {
            var isExported = ts.getCombinedNodeFlags(root) & 2;
            var isSourceLevelForSystemModuleKind = shouldHoistDeclarationInSystemJsModule(root);
            canDefineTempVariablesInPlace = !isExported && !isSourceLevelForSystemModuleKind;
          } else if (root.kind === 139) {
            canDefineTempVariablesInPlace = true;
          }
          if (root.kind === 184) {
            emitAssignmentExpression(root);
          } else {
            ts.Debug.assert(!isAssignmentExpressionStatement);
            if (isFirstVariableDeclaration(root)) {
              sourceMap.changeEmitSourcePos();
            }
            emitBindingElement(root, value);
          }
          function ensureIdentifier(expr, reuseIdentifierExpressions, sourceMapNode) {
            if (expr.kind === 69 && reuseIdentifierExpressions) {
              return expr;
            }
            var identifier = emitTempVariableAssignment(expr, canDefineTempVariablesInPlace, emitCount > 0, sourceMapNode);
            emitCount++;
            return identifier;
          }
          function createDefaultValueCheck(value, defaultValue, sourceMapNode) {
            value = ensureIdentifier(value, true, sourceMapNode);
            var equals = ts.createSynthesizedNode(184);
            equals.left = value;
            equals.operatorToken = ts.createSynthesizedNode(32);
            equals.right = createVoidZero();
            return createConditionalExpression(equals, defaultValue, value);
          }
          function createConditionalExpression(condition, whenTrue, whenFalse) {
            var cond = ts.createSynthesizedNode(185);
            cond.condition = condition;
            cond.questionToken = ts.createSynthesizedNode(53);
            cond.whenTrue = whenTrue;
            cond.colonToken = ts.createSynthesizedNode(54);
            cond.whenFalse = whenFalse;
            return cond;
          }
          function createNumericLiteral(value) {
            var node = ts.createSynthesizedNode(8);
            node.text = "" + value;
            return node;
          }
          function createPropertyAccessForDestructuringProperty(object, propName) {
            var index;
            var nameIsComputed = propName.kind === 137;
            if (nameIsComputed) {
              index = ensureIdentifier(propName.expression, false, propName);
            } else {
              index = ts.createSynthesizedNode(propName.kind);
              index.text = ts.unescapeIdentifier(propName.text);
            }
            return !nameIsComputed && index.kind === 69 ? createPropertyAccessExpression(object, index) : createElementAccessExpression(object, index);
          }
          function createSliceCall(value, sliceIndex) {
            var call = ts.createSynthesizedNode(171);
            var sliceIdentifier = ts.createSynthesizedNode(69);
            sliceIdentifier.text = "slice";
            call.expression = createPropertyAccessExpression(value, sliceIdentifier);
            call.arguments = ts.createSynthesizedNodeArray();
            call.arguments[0] = createNumericLiteral(sliceIndex);
            return call;
          }
          function emitObjectLiteralAssignment(target, value, sourceMapNode) {
            var properties = target.properties;
            if (properties.length !== 1) {
              value = ensureIdentifier(value, true, sourceMapNode);
            }
            for (var _a = 0,
                properties_5 = properties; _a < properties_5.length; _a++) {
              var p = properties_5[_a];
              if (p.kind === 248 || p.kind === 249) {
                var propName = p.name;
                var target_1 = p.kind === 249 ? p : p.initializer || propName;
                emitDestructuringAssignment(target_1, createPropertyAccessForDestructuringProperty(value, propName), p);
              }
            }
          }
          function emitArrayLiteralAssignment(target, value, sourceMapNode) {
            var elements = target.elements;
            if (elements.length !== 1) {
              value = ensureIdentifier(value, true, sourceMapNode);
            }
            for (var i = 0; i < elements.length; i++) {
              var e = elements[i];
              if (e.kind !== 190) {
                if (e.kind !== 188) {
                  emitDestructuringAssignment(e, createElementAccessExpression(value, createNumericLiteral(i)), e);
                } else if (i === elements.length - 1) {
                  emitDestructuringAssignment(e.expression, createSliceCall(value, i), e);
                }
              }
            }
          }
          function emitDestructuringAssignment(target, value, sourceMapNode) {
            if (target.kind === 249) {
              if (target.objectAssignmentInitializer) {
                value = createDefaultValueCheck(value, target.objectAssignmentInitializer, sourceMapNode);
              }
              target = target.name;
            } else if (target.kind === 184 && target.operatorToken.kind === 56) {
              value = createDefaultValueCheck(value, target.right, sourceMapNode);
              target = target.left;
            }
            if (target.kind === 168) {
              emitObjectLiteralAssignment(target, value, sourceMapNode);
            } else if (target.kind === 167) {
              emitArrayLiteralAssignment(target, value, sourceMapNode);
            } else {
              emitAssignment(target, value, emitCount > 0, sourceMapNode);
              emitCount++;
            }
          }
          function emitAssignmentExpression(root) {
            var target = root.left;
            var value = root.right;
            if (ts.isEmptyObjectLiteralOrArrayLiteral(target)) {
              emit(value);
            } else if (isAssignmentExpressionStatement) {
              emitDestructuringAssignment(target, value, ts.nodeIsSynthesized(root) ? target : root);
            } else {
              if (root.parent.kind !== 175) {
                write("(");
              }
              value = ensureIdentifier(value, true, root);
              emitDestructuringAssignment(target, value, root);
              write(", ");
              emit(value);
              if (root.parent.kind !== 175) {
                write(")");
              }
            }
          }
          function emitBindingElement(target, value) {
            if (target.initializer) {
              value = value ? createDefaultValueCheck(value, target.initializer, target) : target.initializer;
            } else if (!value) {
              value = createVoidZero();
            }
            if (ts.isBindingPattern(target.name)) {
              var pattern = target.name;
              var elements = pattern.elements;
              var numElements = elements.length;
              if (numElements !== 1) {
                value = ensureIdentifier(value, numElements !== 0, target);
              }
              for (var i = 0; i < numElements; i++) {
                var element = elements[i];
                if (pattern.kind === 164) {
                  var propName = element.propertyName || element.name;
                  emitBindingElement(element, createPropertyAccessForDestructuringProperty(value, propName));
                } else if (element.kind !== 190) {
                  if (!element.dotDotDotToken) {
                    emitBindingElement(element, createElementAccessExpression(value, createNumericLiteral(i)));
                  } else if (i === numElements - 1) {
                    emitBindingElement(element, createSliceCall(value, i));
                  }
                }
              }
            } else {
              emitAssignment(target.name, value, emitCount > 0, target);
              emitCount++;
            }
          }
        }
        function emitVariableDeclaration(node) {
          if (ts.isBindingPattern(node.name)) {
            if (languageVersion < 2) {
              emitDestructuring(node, false);
            } else {
              emit(node.name);
              emitOptional(" = ", node.initializer);
            }
          } else {
            var initializer = node.initializer;
            if (!initializer && languageVersion < 2 && node.name.kind === 69) {
              var container = ts.getEnclosingBlockScopeContainer(node);
              var flags = resolver.getNodeCheckFlags(node);
              var isCapturedInFunction = flags & 131072;
              var isDeclaredInLoop = flags & 262144;
              var emittedAsTopLevel = ts.isBlockScopedContainerTopLevel(container) || (isCapturedInFunction && isDeclaredInLoop && container.kind === 195 && ts.isIterationStatement(container.parent, false));
              var emittedAsNestedLetDeclaration = ts.getCombinedNodeFlags(node) & 8192 && !emittedAsTopLevel;
              var emitExplicitInitializer = emittedAsNestedLetDeclaration && container.kind !== 203 && container.kind !== 204 && (!resolver.isDeclarationWithCollidingName(node) || (isDeclaredInLoop && !isCapturedInFunction && !ts.isIterationStatement(container, false)));
              if (emitExplicitInitializer) {
                initializer = createVoidZero();
              }
            }
            var exportChanged = isNameOfExportedSourceLevelDeclarationInSystemExternalModule(node.name);
            if (exportChanged) {
              write(exportFunctionForFile + "(\"");
              emitNodeWithCommentsAndWithoutSourcemap(node.name);
              write("\", ");
            }
            emitModuleMemberName(node);
            emitOptional(" = ", initializer);
            if (exportChanged) {
              write(")");
            }
          }
        }
        function emitExportVariableAssignments(node) {
          if (node.kind === 190) {
            return;
          }
          var name = node.name;
          if (name.kind === 69) {
            emitExportMemberAssignments(name);
          } else if (ts.isBindingPattern(name)) {
            ts.forEach(name.elements, emitExportVariableAssignments);
          }
        }
        function isES6ExportedDeclaration(node) {
          return !!(node.flags & 2) && modulekind === 5 && node.parent.kind === 251;
        }
        function emitVariableStatement(node) {
          var startIsEmitted = false;
          if (node.flags & 2) {
            if (isES6ExportedDeclaration(node)) {
              write("export ");
              startIsEmitted = tryEmitStartOfVariableDeclarationList(node.declarationList);
            }
          } else {
            startIsEmitted = tryEmitStartOfVariableDeclarationList(node.declarationList);
          }
          if (startIsEmitted) {
            emitCommaList(node.declarationList.declarations);
            write(";");
          } else {
            var atLeastOneItem = emitVariableDeclarationListSkippingUninitializedEntries(node.declarationList);
            if (atLeastOneItem) {
              write(";");
            }
          }
          if (modulekind !== 5 && node.parent === currentSourceFile) {
            ts.forEach(node.declarationList.declarations, emitExportVariableAssignments);
          }
        }
        function shouldEmitLeadingAndTrailingCommentsForVariableStatement(node) {
          if (!(node.flags & 2)) {
            return true;
          }
          if (isES6ExportedDeclaration(node)) {
            return true;
          }
          for (var _a = 0,
              _b = node.declarationList.declarations; _a < _b.length; _a++) {
            var declaration = _b[_a];
            if (declaration.initializer) {
              return true;
            }
          }
          return false;
        }
        function emitParameter(node) {
          if (languageVersion < 2) {
            if (ts.isBindingPattern(node.name)) {
              var name_27 = createTempVariable(0);
              if (!tempParameters) {
                tempParameters = [];
              }
              tempParameters.push(name_27);
              emit(name_27);
            } else {
              emit(node.name);
            }
          } else {
            if (node.dotDotDotToken) {
              write("...");
            }
            emit(node.name);
            emitOptional(" = ", node.initializer);
          }
        }
        function emitDefaultValueAssignments(node) {
          if (languageVersion < 2) {
            var tempIndex_1 = 0;
            ts.forEach(node.parameters, function(parameter) {
              if (parameter.dotDotDotToken) {
                return;
              }
              var paramName = parameter.name,
                  initializer = parameter.initializer;
              if (ts.isBindingPattern(paramName)) {
                var hasBindingElements = paramName.elements.length > 0;
                if (hasBindingElements || initializer) {
                  writeLine();
                  write("var ");
                  if (hasBindingElements) {
                    emitDestructuring(parameter, false, tempParameters[tempIndex_1]);
                  } else {
                    emit(tempParameters[tempIndex_1]);
                    write(" = ");
                    emit(initializer);
                  }
                  write(";");
                  tempIndex_1++;
                }
              } else if (initializer) {
                writeLine();
                emitStart(parameter);
                write("if (");
                emitNodeWithoutSourceMap(paramName);
                write(" === void 0)");
                emitEnd(parameter);
                write(" { ");
                emitStart(parameter);
                emitNodeWithCommentsAndWithoutSourcemap(paramName);
                write(" = ");
                emitNodeWithCommentsAndWithoutSourcemap(initializer);
                emitEnd(parameter);
                write("; }");
              }
            });
          }
        }
        function emitRestParameter(node) {
          if (languageVersion < 2 && ts.hasRestParameter(node)) {
            var restIndex = node.parameters.length - 1;
            var restParam = node.parameters[restIndex];
            if (ts.isBindingPattern(restParam.name)) {
              return;
            }
            var tempName = createTempVariable(268435456).text;
            writeLine();
            emitLeadingComments(restParam);
            emitStart(restParam);
            write("var ");
            emitNodeWithCommentsAndWithoutSourcemap(restParam.name);
            write(" = [];");
            emitEnd(restParam);
            emitTrailingComments(restParam);
            writeLine();
            write("for (");
            emitStart(restParam);
            write("var " + tempName + " = " + restIndex + ";");
            emitEnd(restParam);
            write(" ");
            emitStart(restParam);
            write(tempName + " < arguments.length;");
            emitEnd(restParam);
            write(" ");
            emitStart(restParam);
            write(tempName + "++");
            emitEnd(restParam);
            write(") {");
            increaseIndent();
            writeLine();
            emitStart(restParam);
            emitNodeWithCommentsAndWithoutSourcemap(restParam.name);
            write("[" + tempName + " - " + restIndex + "] = arguments[" + tempName + "];");
            emitEnd(restParam);
            decreaseIndent();
            writeLine();
            write("}");
          }
        }
        function emitAccessor(node) {
          write(node.kind === 146 ? "get " : "set ");
          emit(node.name);
          emitSignatureAndBody(node);
        }
        function shouldEmitAsArrowFunction(node) {
          return node.kind === 177 && languageVersion >= 2;
        }
        function emitDeclarationName(node) {
          if (node.name) {
            emitNodeWithCommentsAndWithoutSourcemap(node.name);
          } else {
            write(getGeneratedNameForNode(node));
          }
        }
        function shouldEmitFunctionName(node) {
          if (node.kind === 176) {
            return !!node.name;
          }
          if (node.kind === 216) {
            return !!node.name || modulekind !== 5;
          }
        }
        function emitFunctionDeclaration(node) {
          if (ts.nodeIsMissing(node.body)) {
            return emitCommentsOnNotEmittedNode(node);
          }
          var kind = node.kind,
              parent = node.parent;
          if (kind !== 144 && kind !== 143 && parent && parent.kind !== 248 && parent.kind !== 171 && parent.kind !== 167) {
            emitLeadingComments(node);
          }
          emitStart(node);
          if (!shouldEmitAsArrowFunction(node)) {
            if (isES6ExportedDeclaration(node)) {
              write("export ");
              if (node.flags & 512) {
                write("default ");
              }
            }
            write("function");
            if (languageVersion >= 2 && node.asteriskToken) {
              write("*");
            }
            write(" ");
          }
          if (shouldEmitFunctionName(node)) {
            emitDeclarationName(node);
          }
          emitSignatureAndBody(node);
          if (modulekind !== 5 && kind === 216 && parent === currentSourceFile && node.name) {
            emitExportMemberAssignments(node.name);
          }
          emitEnd(node);
          if (kind !== 144 && kind !== 143) {
            emitTrailingComments(node);
          }
        }
        function emitCaptureThisForNodeIfNecessary(node) {
          if (resolver.getNodeCheckFlags(node) & 4) {
            writeLine();
            emitStart(node);
            write("var _this = this;");
            emitEnd(node);
          }
        }
        function emitSignatureParameters(node) {
          increaseIndent();
          write("(");
          if (node) {
            var parameters = node.parameters;
            var omitCount = languageVersion < 2 && ts.hasRestParameter(node) ? 1 : 0;
            emitList(parameters, 0, parameters.length - omitCount, false, false);
          }
          write(")");
          decreaseIndent();
        }
        function emitSignatureParametersForArrow(node) {
          if (node.parameters.length === 1 && node.pos === node.parameters[0].pos) {
            emit(node.parameters[0]);
            return;
          }
          emitSignatureParameters(node);
        }
        function emitAsyncFunctionBodyForES6(node) {
          var promiseConstructor = ts.getEntityNameFromTypeNode(node.type);
          var isArrowFunction = node.kind === 177;
          var hasLexicalArguments = (resolver.getNodeCheckFlags(node) & 8192) !== 0;
          if (!isArrowFunction) {
            write(" {");
            increaseIndent();
            writeLine();
            if (resolver.getNodeCheckFlags(node) & 4096) {
              writeLines("\nconst _super = (function (geti, seti) {\n    const cache = Object.create(null);\n    return name => cache[name] || (cache[name] = { get value() { return geti(name); }, set value(v) { seti(name, v); } });\n})(name => super[name], (name, value) => super[name] = value);");
              writeLine();
            } else if (resolver.getNodeCheckFlags(node) & 2048) {
              write("const _super = name => super[name];");
              writeLine();
            }
            write("return");
          }
          write(" __awaiter(this");
          if (hasLexicalArguments) {
            write(", arguments, ");
          } else {
            write(", void 0, ");
          }
          if (!promiseConstructor || (compilerOptions.noCustomAsyncPromise && languageVersion >= 2)) {
            write("void 0");
          } else {
            emitEntityNameAsExpression(promiseConstructor, false);
          }
          write(", function* ()");
          emitFunctionBody(node);
          write(")");
          if (!isArrowFunction) {
            write(";");
            decreaseIndent();
            writeLine();
            write("}");
          }
        }
        function emitFunctionBody(node) {
          if (!node.body) {
            write(" { }");
          } else {
            if (node.body.kind === 195) {
              emitBlockFunctionBody(node, node.body);
            } else {
              emitExpressionFunctionBody(node, node.body);
            }
          }
        }
        function emitSignatureAndBody(node) {
          var saveConvertedLoopState = convertedLoopState;
          var saveTempFlags = tempFlags;
          var saveTempVariables = tempVariables;
          var saveTempParameters = tempParameters;
          convertedLoopState = undefined;
          tempFlags = 0;
          tempVariables = undefined;
          tempParameters = undefined;
          if (shouldEmitAsArrowFunction(node)) {
            emitSignatureParametersForArrow(node);
            write(" =>");
          } else {
            emitSignatureParameters(node);
          }
          var isAsync = ts.isAsyncFunctionLike(node);
          if (isAsync) {
            emitAsyncFunctionBodyForES6(node);
          } else {
            emitFunctionBody(node);
          }
          if (!isES6ExportedDeclaration(node)) {
            emitExportMemberAssignment(node);
          }
          ts.Debug.assert(convertedLoopState === undefined);
          convertedLoopState = saveConvertedLoopState;
          tempFlags = saveTempFlags;
          tempVariables = saveTempVariables;
          tempParameters = saveTempParameters;
        }
        function emitFunctionBodyPreamble(node) {
          emitCaptureThisForNodeIfNecessary(node);
          emitDefaultValueAssignments(node);
          emitRestParameter(node);
        }
        function emitExpressionFunctionBody(node, body) {
          if (languageVersion < 2 || node.flags & 256) {
            emitDownLevelExpressionFunctionBody(node, body);
            return;
          }
          write(" ");
          var current = body;
          while (current.kind === 174) {
            current = current.expression;
          }
          emitParenthesizedIf(body, current.kind === 168);
        }
        function emitDownLevelExpressionFunctionBody(node, body) {
          write(" {");
          increaseIndent();
          var outPos = writer.getTextPos();
          emitDetachedCommentsAndUpdateCommentsInfo(node.body);
          emitFunctionBodyPreamble(node);
          var preambleEmitted = writer.getTextPos() !== outPos;
          decreaseIndent();
          if (!preambleEmitted && nodeStartPositionsAreOnSameLine(node, body)) {
            write(" ");
            emitStart(body);
            write("return ");
            emit(body);
            emitEnd(body);
            write(";");
            emitTempDeclarations(false);
            write(" ");
          } else {
            increaseIndent();
            writeLine();
            emitLeadingComments(node.body);
            emitStart(body);
            write("return ");
            emit(body);
            emitEnd(body);
            write(";");
            emitTrailingComments(node.body);
            emitTempDeclarations(true);
            decreaseIndent();
            writeLine();
          }
          emitStart(node.body);
          write("}");
          emitEnd(node.body);
        }
        function emitBlockFunctionBody(node, body) {
          write(" {");
          var initialTextPos = writer.getTextPos();
          increaseIndent();
          emitDetachedCommentsAndUpdateCommentsInfo(body.statements);
          var startIndex = emitDirectivePrologues(body.statements, true);
          emitFunctionBodyPreamble(node);
          decreaseIndent();
          var preambleEmitted = writer.getTextPos() !== initialTextPos;
          if (!preambleEmitted && nodeEndIsOnSameLineAsNodeStart(body, body)) {
            for (var _a = 0,
                _b = body.statements; _a < _b.length; _a++) {
              var statement = _b[_a];
              write(" ");
              emit(statement);
            }
            emitTempDeclarations(false);
            write(" ");
            emitLeadingCommentsOfPosition(body.statements.end);
          } else {
            increaseIndent();
            emitLinesStartingAt(body.statements, startIndex);
            emitTempDeclarations(true);
            writeLine();
            emitLeadingCommentsOfPosition(body.statements.end);
            decreaseIndent();
          }
          emitToken(16, body.statements.end);
        }
        function getSuperCallAtGivenIndex(ctor, index) {
          if (!ctor.body) {
            return undefined;
          }
          var statements = ctor.body.statements;
          if (!statements || index >= statements.length) {
            return undefined;
          }
          var statement = statements[index];
          if (statement.kind === 198) {
            return ts.isSuperCallExpression(statement.expression) ? statement : undefined;
          }
        }
        function emitParameterPropertyAssignments(node) {
          ts.forEach(node.parameters, function(param) {
            if (param.flags & 56) {
              writeLine();
              emitStart(param);
              emitStart(param.name);
              write("this.");
              emitNodeWithoutSourceMap(param.name);
              emitEnd(param.name);
              write(" = ");
              emit(param.name);
              write(";");
              emitEnd(param);
            }
          });
        }
        function emitMemberAccessForPropertyName(memberName) {
          if (memberName.kind === 9 || memberName.kind === 8) {
            write("[");
            emitNodeWithCommentsAndWithoutSourcemap(memberName);
            write("]");
          } else if (memberName.kind === 137) {
            emitComputedPropertyName(memberName);
          } else {
            write(".");
            emitNodeWithCommentsAndWithoutSourcemap(memberName);
          }
        }
        function getInitializedProperties(node, isStatic) {
          var properties = [];
          for (var _a = 0,
              _b = node.members; _a < _b.length; _a++) {
            var member = _b[_a];
            if (member.kind === 142 && isStatic === ((member.flags & 64) !== 0) && member.initializer) {
              properties.push(member);
            }
          }
          return properties;
        }
        function emitPropertyDeclarations(node, properties) {
          for (var _a = 0,
              properties_6 = properties; _a < properties_6.length; _a++) {
            var property = properties_6[_a];
            emitPropertyDeclaration(node, property);
          }
        }
        function emitPropertyDeclaration(node, property, receiver, isExpression) {
          writeLine();
          emitLeadingComments(property);
          emitStart(property);
          emitStart(property.name);
          if (receiver) {
            emit(receiver);
          } else {
            if (property.flags & 64) {
              emitDeclarationName(node);
            } else {
              write("this");
            }
          }
          emitMemberAccessForPropertyName(property.name);
          emitEnd(property.name);
          write(" = ");
          emit(property.initializer);
          if (!isExpression) {
            write(";");
          }
          emitEnd(property);
          emitTrailingComments(property);
        }
        function emitMemberFunctionsForES5AndLower(node) {
          ts.forEach(node.members, function(member) {
            if (member.kind === 194) {
              writeLine();
              write(";");
            } else if (member.kind === 144 || node.kind === 143) {
              if (!member.body) {
                return emitCommentsOnNotEmittedNode(member);
              }
              writeLine();
              emitLeadingComments(member);
              emitStart(member);
              emitStart(member.name);
              emitClassMemberPrefix(node, member);
              emitMemberAccessForPropertyName(member.name);
              emitEnd(member.name);
              write(" = ");
              emitFunctionDeclaration(member);
              emitEnd(member);
              write(";");
              emitTrailingComments(member);
            } else if (member.kind === 146 || member.kind === 147) {
              var accessors = ts.getAllAccessorDeclarations(node.members, member);
              if (member === accessors.firstAccessor) {
                writeLine();
                emitStart(member);
                write("Object.defineProperty(");
                emitStart(member.name);
                emitClassMemberPrefix(node, member);
                write(", ");
                emitExpressionForPropertyName(member.name);
                emitEnd(member.name);
                write(", {");
                increaseIndent();
                if (accessors.getAccessor) {
                  writeLine();
                  emitLeadingComments(accessors.getAccessor);
                  write("get: ");
                  emitStart(accessors.getAccessor);
                  write("function ");
                  emitSignatureAndBody(accessors.getAccessor);
                  emitEnd(accessors.getAccessor);
                  emitTrailingComments(accessors.getAccessor);
                  write(",");
                }
                if (accessors.setAccessor) {
                  writeLine();
                  emitLeadingComments(accessors.setAccessor);
                  write("set: ");
                  emitStart(accessors.setAccessor);
                  write("function ");
                  emitSignatureAndBody(accessors.setAccessor);
                  emitEnd(accessors.setAccessor);
                  emitTrailingComments(accessors.setAccessor);
                  write(",");
                }
                writeLine();
                write("enumerable: true,");
                writeLine();
                write("configurable: true");
                decreaseIndent();
                writeLine();
                write("});");
                emitEnd(member);
              }
            }
          });
        }
        function emitMemberFunctionsForES6AndHigher(node) {
          for (var _a = 0,
              _b = node.members; _a < _b.length; _a++) {
            var member = _b[_a];
            if ((member.kind === 144 || node.kind === 143) && !member.body) {
              emitCommentsOnNotEmittedNode(member);
            } else if (member.kind === 144 || member.kind === 146 || member.kind === 147) {
              writeLine();
              emitLeadingComments(member);
              emitStart(member);
              if (member.flags & 64) {
                write("static ");
              }
              if (member.kind === 146) {
                write("get ");
              } else if (member.kind === 147) {
                write("set ");
              }
              if (member.asteriskToken) {
                write("*");
              }
              emit(member.name);
              emitSignatureAndBody(member);
              emitEnd(member);
              emitTrailingComments(member);
            } else if (member.kind === 194) {
              writeLine();
              write(";");
            }
          }
        }
        function emitConstructor(node, baseTypeElement) {
          var saveConvertedLoopState = convertedLoopState;
          var saveTempFlags = tempFlags;
          var saveTempVariables = tempVariables;
          var saveTempParameters = tempParameters;
          convertedLoopState = undefined;
          tempFlags = 0;
          tempVariables = undefined;
          tempParameters = undefined;
          emitConstructorWorker(node, baseTypeElement);
          ts.Debug.assert(convertedLoopState === undefined);
          convertedLoopState = saveConvertedLoopState;
          tempFlags = saveTempFlags;
          tempVariables = saveTempVariables;
          tempParameters = saveTempParameters;
        }
        function emitConstructorWorker(node, baseTypeElement) {
          var hasInstancePropertyWithInitializer = false;
          ts.forEach(node.members, function(member) {
            if (member.kind === 145 && !member.body) {
              emitCommentsOnNotEmittedNode(member);
            }
            if (member.kind === 142 && member.initializer && (member.flags & 64) === 0) {
              hasInstancePropertyWithInitializer = true;
            }
          });
          var ctor = ts.getFirstConstructorWithBody(node);
          if (languageVersion >= 2 && !ctor && !hasInstancePropertyWithInitializer) {
            return;
          }
          if (ctor) {
            emitLeadingComments(ctor);
          }
          emitStart(ctor || node);
          if (languageVersion < 2) {
            write("function ");
            emitDeclarationName(node);
            emitSignatureParameters(ctor);
          } else {
            write("constructor");
            if (ctor) {
              emitSignatureParameters(ctor);
            } else {
              if (baseTypeElement) {
                write("(...args)");
              } else {
                write("()");
              }
            }
          }
          var startIndex = 0;
          write(" {");
          increaseIndent();
          if (ctor) {
            startIndex = emitDirectivePrologues(ctor.body.statements, true);
            emitDetachedCommentsAndUpdateCommentsInfo(ctor.body.statements);
          }
          emitCaptureThisForNodeIfNecessary(node);
          var superCall;
          if (ctor) {
            emitDefaultValueAssignments(ctor);
            emitRestParameter(ctor);
            if (baseTypeElement) {
              superCall = getSuperCallAtGivenIndex(ctor, startIndex);
              if (superCall) {
                writeLine();
                emit(superCall);
              }
            }
            emitParameterPropertyAssignments(ctor);
          } else {
            if (baseTypeElement) {
              writeLine();
              emitStart(baseTypeElement);
              if (languageVersion < 2) {
                write("_super.apply(this, arguments);");
              } else {
                write("super(...args);");
              }
              emitEnd(baseTypeElement);
            }
          }
          emitPropertyDeclarations(node, getInitializedProperties(node, false));
          if (ctor) {
            var statements = ctor.body.statements;
            if (superCall) {
              statements = statements.slice(1);
            }
            emitLinesStartingAt(statements, startIndex);
          }
          emitTempDeclarations(true);
          writeLine();
          if (ctor) {
            emitLeadingCommentsOfPosition(ctor.body.statements.end);
          }
          decreaseIndent();
          emitToken(16, ctor ? ctor.body.statements.end : node.members.end);
          emitEnd(ctor || node);
          if (ctor) {
            emitTrailingComments(ctor);
          }
        }
        function emitClassExpression(node) {
          return emitClassLikeDeclaration(node);
        }
        function emitClassDeclaration(node) {
          return emitClassLikeDeclaration(node);
        }
        function emitClassLikeDeclaration(node) {
          if (languageVersion < 2) {
            emitClassLikeDeclarationBelowES6(node);
          } else {
            emitClassLikeDeclarationForES6AndHigher(node);
          }
          if (modulekind !== 5 && node.parent === currentSourceFile && node.name) {
            emitExportMemberAssignments(node.name);
          }
        }
        function emitClassLikeDeclarationForES6AndHigher(node) {
          var decoratedClassAlias;
          var thisNodeIsDecorated = ts.nodeIsDecorated(node);
          if (node.kind === 217) {
            if (thisNodeIsDecorated) {
              if (resolver.getNodeCheckFlags(node) & 524288) {
                decoratedClassAlias = ts.unescapeIdentifier(makeUniqueName(node.name ? node.name.text : "default"));
                decoratedClassAliases[ts.getNodeId(node)] = decoratedClassAlias;
                write("let " + decoratedClassAlias + ";");
                writeLine();
              }
              if (isES6ExportedDeclaration(node) && !(node.flags & 512)) {
                write("export ");
              }
              write("let ");
              emitDeclarationName(node);
              if (decoratedClassAlias !== undefined) {
                write(" = " + decoratedClassAlias);
              }
              write(" = ");
            } else if (isES6ExportedDeclaration(node)) {
              write("export ");
              if (node.flags & 512) {
                write("default ");
              }
            }
          }
          var staticProperties = getInitializedProperties(node, true);
          var isClassExpressionWithStaticProperties = staticProperties.length > 0 && node.kind === 189;
          var tempVariable;
          if (isClassExpressionWithStaticProperties) {
            tempVariable = createAndRecordTempVariable(0);
            write("(");
            increaseIndent();
            emit(tempVariable);
            write(" = ");
          }
          write("class");
          if (node.name || (node.flags & 512 && (staticProperties.length > 0 || modulekind !== 5) && !thisNodeIsDecorated)) {
            write(" ");
            emitDeclarationName(node);
          }
          var baseTypeNode = ts.getClassExtendsHeritageClauseElement(node);
          if (baseTypeNode) {
            write(" extends ");
            emit(baseTypeNode.expression);
          }
          write(" {");
          increaseIndent();
          writeLine();
          emitConstructor(node, baseTypeNode);
          emitMemberFunctionsForES6AndHigher(node);
          decreaseIndent();
          writeLine();
          emitToken(16, node.members.end);
          if (thisNodeIsDecorated) {
            decoratedClassAliases[ts.getNodeId(node)] = undefined;
            write(";");
          }
          if (isClassExpressionWithStaticProperties) {
            for (var _a = 0,
                staticProperties_1 = staticProperties; _a < staticProperties_1.length; _a++) {
              var property = staticProperties_1[_a];
              write(",");
              writeLine();
              emitPropertyDeclaration(node, property, tempVariable, true);
            }
            write(",");
            writeLine();
            emit(tempVariable);
            decreaseIndent();
            write(")");
          } else {
            writeLine();
            emitPropertyDeclarations(node, staticProperties);
            emitDecoratorsOfClass(node, decoratedClassAlias);
          }
          if (!(node.flags & 2)) {
            return;
          }
          if (modulekind !== 5) {
            emitExportMemberAssignment(node);
          } else {
            if (node.flags & 512) {
              if (thisNodeIsDecorated) {
                writeLine();
                write("export default ");
                emitDeclarationName(node);
                write(";");
              }
            } else if (node.parent.kind !== 251) {
              writeLine();
              emitStart(node);
              emitModuleMemberName(node);
              write(" = ");
              emitDeclarationName(node);
              emitEnd(node);
              write(";");
            }
          }
        }
        function emitClassLikeDeclarationBelowES6(node) {
          if (node.kind === 217) {
            if (!shouldHoistDeclarationInSystemJsModule(node)) {
              write("var ");
            }
            emitDeclarationName(node);
            write(" = ");
          }
          write("(function (");
          var baseTypeNode = ts.getClassExtendsHeritageClauseElement(node);
          if (baseTypeNode) {
            write("_super");
          }
          write(") {");
          var saveTempFlags = tempFlags;
          var saveTempVariables = tempVariables;
          var saveTempParameters = tempParameters;
          var saveComputedPropertyNamesToGeneratedNames = computedPropertyNamesToGeneratedNames;
          var saveConvertedLoopState = convertedLoopState;
          convertedLoopState = undefined;
          tempFlags = 0;
          tempVariables = undefined;
          tempParameters = undefined;
          computedPropertyNamesToGeneratedNames = undefined;
          increaseIndent();
          if (baseTypeNode) {
            writeLine();
            emitStart(baseTypeNode);
            write("__extends(");
            emitDeclarationName(node);
            write(", _super);");
            emitEnd(baseTypeNode);
          }
          writeLine();
          emitConstructor(node, baseTypeNode);
          emitMemberFunctionsForES5AndLower(node);
          emitPropertyDeclarations(node, getInitializedProperties(node, true));
          writeLine();
          emitDecoratorsOfClass(node, undefined);
          writeLine();
          emitToken(16, node.members.end, function() {
            write("return ");
            emitDeclarationName(node);
          });
          write(";");
          emitTempDeclarations(true);
          ts.Debug.assert(convertedLoopState === undefined);
          convertedLoopState = saveConvertedLoopState;
          tempFlags = saveTempFlags;
          tempVariables = saveTempVariables;
          tempParameters = saveTempParameters;
          computedPropertyNamesToGeneratedNames = saveComputedPropertyNamesToGeneratedNames;
          decreaseIndent();
          writeLine();
          emitToken(16, node.members.end);
          emitStart(node);
          write("(");
          if (baseTypeNode) {
            emit(baseTypeNode.expression);
          }
          write("))");
          if (node.kind === 217) {
            write(";");
          }
          emitEnd(node);
          if (node.kind === 217) {
            emitExportMemberAssignment(node);
          }
        }
        function emitClassMemberPrefix(node, member) {
          emitDeclarationName(node);
          if (!(member.flags & 64)) {
            write(".prototype");
          }
        }
        function emitDecoratorsOfClass(node, decoratedClassAlias) {
          emitDecoratorsOfMembers(node, 0);
          emitDecoratorsOfMembers(node, 64);
          emitDecoratorsOfConstructor(node, decoratedClassAlias);
        }
        function emitDecoratorsOfConstructor(node, decoratedClassAlias) {
          var decorators = node.decorators;
          var constructor = ts.getFirstConstructorWithBody(node);
          var firstParameterDecorator = constructor && ts.forEach(constructor.parameters, function(parameter) {
            return parameter.decorators;
          });
          if (!decorators && !firstParameterDecorator) {
            return;
          }
          writeLine();
          emitStart(node.decorators || firstParameterDecorator);
          emitDeclarationName(node);
          if (decoratedClassAlias !== undefined) {
            write(" = " + decoratedClassAlias);
          }
          write(" = __decorate([");
          increaseIndent();
          writeLine();
          var decoratorCount = decorators ? decorators.length : 0;
          var argumentsWritten = emitList(decorators, 0, decoratorCount, true, false, false, true, function(decorator) {
            return emit(decorator.expression);
          });
          if (firstParameterDecorator) {
            argumentsWritten += emitDecoratorsOfParameters(constructor, argumentsWritten > 0);
          }
          emitSerializedTypeMetadata(node, argumentsWritten >= 0);
          decreaseIndent();
          writeLine();
          write("], ");
          emitDeclarationName(node);
          write(")");
          emitEnd(node.decorators || firstParameterDecorator);
          write(";");
          writeLine();
        }
        function emitDecoratorsOfMembers(node, staticFlag) {
          for (var _a = 0,
              _b = node.members; _a < _b.length; _a++) {
            var member = _b[_a];
            if ((member.flags & 64) !== staticFlag) {
              continue;
            }
            if (!ts.nodeCanBeDecorated(member)) {
              continue;
            }
            var decorators = void 0;
            var functionLikeMember = void 0;
            if (ts.isAccessor(member)) {
              var accessors = ts.getAllAccessorDeclarations(node.members, member);
              if (member !== accessors.firstAccessor) {
                continue;
              }
              decorators = accessors.firstAccessor.decorators;
              if (!decorators && accessors.secondAccessor) {
                decorators = accessors.secondAccessor.decorators;
              }
              functionLikeMember = accessors.setAccessor;
            } else {
              decorators = member.decorators;
              if (member.kind === 144) {
                functionLikeMember = member;
              }
            }
            var firstParameterDecorator = functionLikeMember && ts.forEach(functionLikeMember.parameters, function(parameter) {
              return parameter.decorators;
            });
            if (!decorators && !firstParameterDecorator) {
              continue;
            }
            writeLine();
            emitStart(decorators || firstParameterDecorator);
            write("__decorate([");
            increaseIndent();
            writeLine();
            var decoratorCount = decorators ? decorators.length : 0;
            var argumentsWritten = emitList(decorators, 0, decoratorCount, true, false, false, true, function(decorator) {
              return emit(decorator.expression);
            });
            if (firstParameterDecorator) {
              argumentsWritten += emitDecoratorsOfParameters(functionLikeMember, argumentsWritten > 0);
            }
            emitSerializedTypeMetadata(member, argumentsWritten > 0);
            decreaseIndent();
            writeLine();
            write("], ");
            emitClassMemberPrefix(node, member);
            write(", ");
            emitExpressionForPropertyName(member.name);
            if (languageVersion > 0) {
              if (member.kind !== 142) {
                write(", null");
              } else {
                write(", void 0");
              }
            }
            write(")");
            emitEnd(decorators || firstParameterDecorator);
            write(";");
            writeLine();
          }
        }
        function emitDecoratorsOfParameters(node, leadingComma) {
          var argumentsWritten = 0;
          if (node) {
            var parameterIndex_1 = 0;
            for (var _a = 0,
                _b = node.parameters; _a < _b.length; _a++) {
              var parameter = _b[_a];
              if (ts.nodeIsDecorated(parameter)) {
                var decorators = parameter.decorators;
                argumentsWritten += emitList(decorators, 0, decorators.length, true, false, leadingComma, true, function(decorator) {
                  write("__param(" + parameterIndex_1 + ", ");
                  emit(decorator.expression);
                  write(")");
                });
                leadingComma = true;
              }
              parameterIndex_1++;
            }
          }
          return argumentsWritten;
        }
        function shouldEmitTypeMetadata(node) {
          switch (node.kind) {
            case 144:
            case 146:
            case 147:
            case 142:
              return true;
          }
          return false;
        }
        function shouldEmitReturnTypeMetadata(node) {
          switch (node.kind) {
            case 144:
              return true;
          }
          return false;
        }
        function shouldEmitParamTypesMetadata(node) {
          switch (node.kind) {
            case 217:
            case 144:
            case 147:
              return true;
          }
          return false;
        }
        function emitSerializedTypeOfNode(node) {
          switch (node.kind) {
            case 217:
              write("Function");
              return;
            case 142:
              emitSerializedTypeNode(node.type);
              return;
            case 139:
              emitSerializedTypeNode(node.type);
              return;
            case 146:
              emitSerializedTypeNode(node.type);
              return;
            case 147:
              emitSerializedTypeNode(ts.getSetAccessorTypeAnnotationNode(node));
              return;
          }
          if (ts.isFunctionLike(node)) {
            write("Function");
            return;
          }
          write("void 0");
        }
        function emitSerializedTypeNode(node) {
          if (node) {
            switch (node.kind) {
              case 103:
                write("void 0");
                return;
              case 161:
                emitSerializedTypeNode(node.type);
                return;
              case 153:
              case 154:
                write("Function");
                return;
              case 157:
              case 158:
                write("Array");
                return;
              case 151:
              case 120:
                write("Boolean");
                return;
              case 130:
              case 163:
                write("String");
                return;
              case 128:
                write("Number");
                return;
              case 131:
                write("Symbol");
                return;
              case 152:
                emitSerializedTypeReferenceNode(node);
                return;
              case 155:
              case 156:
              case 159:
              case 160:
              case 117:
              case 162:
                break;
              default:
                ts.Debug.fail("Cannot serialize unexpected type node.");
                break;
            }
          }
          write("Object");
        }
        function emitSerializedTypeReferenceNode(node) {
          var location = node.parent;
          while (ts.isDeclaration(location) || ts.isTypeNode(location)) {
            location = location.parent;
          }
          var typeName = ts.cloneEntityName(node.typeName, location);
          var result = resolver.getTypeReferenceSerializationKind(typeName);
          switch (result) {
            case ts.TypeReferenceSerializationKind.Unknown:
              var temp = createAndRecordTempVariable(0);
              write("(typeof (");
              emitNodeWithoutSourceMap(temp);
              write(" = ");
              emitEntityNameAsExpression(typeName, true);
              write(") === 'function' && ");
              emitNodeWithoutSourceMap(temp);
              write(") || Object");
              break;
            case ts.TypeReferenceSerializationKind.TypeWithConstructSignatureAndValue:
              emitEntityNameAsExpression(typeName, false);
              break;
            case ts.TypeReferenceSerializationKind.VoidType:
              write("void 0");
              break;
            case ts.TypeReferenceSerializationKind.BooleanType:
              write("Boolean");
              break;
            case ts.TypeReferenceSerializationKind.NumberLikeType:
              write("Number");
              break;
            case ts.TypeReferenceSerializationKind.StringLikeType:
              write("String");
              break;
            case ts.TypeReferenceSerializationKind.ArrayLikeType:
              write("Array");
              break;
            case ts.TypeReferenceSerializationKind.ESSymbolType:
              if (languageVersion < 2) {
                write("typeof Symbol === 'function' ? Symbol : Object");
              } else {
                write("Symbol");
              }
              break;
            case ts.TypeReferenceSerializationKind.TypeWithCallSignature:
              write("Function");
              break;
            case ts.TypeReferenceSerializationKind.ObjectType:
              write("Object");
              break;
          }
        }
        function emitSerializedParameterTypesOfNode(node) {
          if (node) {
            var valueDeclaration = void 0;
            if (node.kind === 217) {
              valueDeclaration = ts.getFirstConstructorWithBody(node);
            } else if (ts.isFunctionLike(node) && ts.nodeIsPresent(node.body)) {
              valueDeclaration = node;
            }
            if (valueDeclaration) {
              var parameters = valueDeclaration.parameters;
              var parameterCount = parameters.length;
              if (parameterCount > 0) {
                for (var i = 0; i < parameterCount; i++) {
                  if (i > 0) {
                    write(", ");
                  }
                  if (parameters[i].dotDotDotToken) {
                    var parameterType = parameters[i].type;
                    if (parameterType.kind === 157) {
                      parameterType = parameterType.elementType;
                    } else if (parameterType.kind === 152 && parameterType.typeArguments && parameterType.typeArguments.length === 1) {
                      parameterType = parameterType.typeArguments[0];
                    } else {
                      parameterType = undefined;
                    }
                    emitSerializedTypeNode(parameterType);
                  } else {
                    emitSerializedTypeOfNode(parameters[i]);
                  }
                }
              }
            }
          }
        }
        function emitSerializedReturnTypeOfNode(node) {
          if (node && ts.isFunctionLike(node) && node.type) {
            emitSerializedTypeNode(node.type);
            return;
          }
          write("void 0");
        }
        function emitSerializedTypeMetadata(node, writeComma) {
          var argumentsWritten = 0;
          if (compilerOptions.emitDecoratorMetadata) {
            if (shouldEmitTypeMetadata(node)) {
              if (writeComma) {
                write(", ");
              }
              writeLine();
              write("__metadata('design:type', ");
              emitSerializedTypeOfNode(node);
              write(")");
              argumentsWritten++;
            }
            if (shouldEmitParamTypesMetadata(node)) {
              if (writeComma || argumentsWritten) {
                write(", ");
              }
              writeLine();
              write("__metadata('design:paramtypes', [");
              emitSerializedParameterTypesOfNode(node);
              write("])");
              argumentsWritten++;
            }
            if (shouldEmitReturnTypeMetadata(node)) {
              if (writeComma || argumentsWritten) {
                write(", ");
              }
              writeLine();
              write("__metadata('design:returntype', ");
              emitSerializedReturnTypeOfNode(node);
              write(")");
              argumentsWritten++;
            }
          }
          return argumentsWritten;
        }
        function emitInterfaceDeclaration(node) {
          emitCommentsOnNotEmittedNode(node);
        }
        function shouldEmitEnumDeclaration(node) {
          var isConstEnum = ts.isConst(node);
          return !isConstEnum || compilerOptions.preserveConstEnums || compilerOptions.isolatedModules;
        }
        function emitEnumDeclaration(node) {
          if (!shouldEmitEnumDeclaration(node)) {
            return;
          }
          if (!shouldHoistDeclarationInSystemJsModule(node)) {
            var isES6ExportedEnum = isES6ExportedDeclaration(node);
            if (!(node.flags & 2) || (isES6ExportedEnum && isFirstDeclarationOfKind(node, node.symbol && node.symbol.declarations, 220))) {
              emitStart(node);
              if (isES6ExportedEnum) {
                write("export ");
              }
              write("var ");
              emit(node.name);
              emitEnd(node);
              write(";");
            }
          }
          writeLine();
          emitStart(node);
          write("(function (");
          emitStart(node.name);
          write(getGeneratedNameForNode(node));
          emitEnd(node.name);
          write(") {");
          increaseIndent();
          emitLines(node.members);
          decreaseIndent();
          writeLine();
          emitToken(16, node.members.end);
          write(")(");
          emitModuleMemberName(node);
          write(" || (");
          emitModuleMemberName(node);
          write(" = {}));");
          emitEnd(node);
          if (!isES6ExportedDeclaration(node) && node.flags & 2 && !shouldHoistDeclarationInSystemJsModule(node)) {
            writeLine();
            emitStart(node);
            write("var ");
            emit(node.name);
            write(" = ");
            emitModuleMemberName(node);
            emitEnd(node);
            write(";");
          }
          if (modulekind !== 5 && node.parent === currentSourceFile) {
            if (modulekind === 4 && (node.flags & 2)) {
              writeLine();
              write(exportFunctionForFile + "(\"");
              emitDeclarationName(node);
              write("\", ");
              emitDeclarationName(node);
              write(");");
            }
            emitExportMemberAssignments(node.name);
          }
        }
        function emitEnumMember(node) {
          var enumParent = node.parent;
          emitStart(node);
          write(getGeneratedNameForNode(enumParent));
          write("[");
          write(getGeneratedNameForNode(enumParent));
          write("[");
          emitExpressionForPropertyName(node.name);
          write("] = ");
          writeEnumMemberDeclarationValue(node);
          write("] = ");
          emitExpressionForPropertyName(node.name);
          emitEnd(node);
          write(";");
        }
        function writeEnumMemberDeclarationValue(member) {
          var value = resolver.getConstantValue(member);
          if (value !== undefined) {
            write(value.toString());
            return;
          } else if (member.initializer) {
            emit(member.initializer);
          } else {
            write("undefined");
          }
        }
        function getInnerMostModuleDeclarationFromDottedModule(moduleDeclaration) {
          if (moduleDeclaration.body.kind === 221) {
            var recursiveInnerModule = getInnerMostModuleDeclarationFromDottedModule(moduleDeclaration.body);
            return recursiveInnerModule || moduleDeclaration.body;
          }
        }
        function shouldEmitModuleDeclaration(node) {
          return ts.isInstantiatedModule(node, compilerOptions.preserveConstEnums || compilerOptions.isolatedModules);
        }
        function isModuleMergedWithES6Class(node) {
          return languageVersion === 2 && !!(resolver.getNodeCheckFlags(node) & 32768);
        }
        function isFirstDeclarationOfKind(node, declarations, kind) {
          return !ts.forEach(declarations, function(declaration) {
            return declaration.kind === kind && declaration.pos < node.pos;
          });
        }
        function emitModuleDeclaration(node) {
          var shouldEmit = shouldEmitModuleDeclaration(node);
          if (!shouldEmit) {
            return emitCommentsOnNotEmittedNode(node);
          }
          var hoistedInDeclarationScope = shouldHoistDeclarationInSystemJsModule(node);
          var emitVarForModule = !hoistedInDeclarationScope && !isModuleMergedWithES6Class(node);
          if (emitVarForModule) {
            var isES6ExportedNamespace = isES6ExportedDeclaration(node);
            if (!isES6ExportedNamespace || isFirstDeclarationOfKind(node, node.symbol && node.symbol.declarations, 221)) {
              emitStart(node);
              if (isES6ExportedNamespace) {
                write("export ");
              }
              write("var ");
              emit(node.name);
              write(";");
              emitEnd(node);
              writeLine();
            }
          }
          emitStart(node);
          write("(function (");
          emitStart(node.name);
          write(getGeneratedNameForNode(node));
          emitEnd(node.name);
          write(") ");
          if (node.body.kind === 222) {
            var saveConvertedLoopState = convertedLoopState;
            var saveTempFlags = tempFlags;
            var saveTempVariables = tempVariables;
            convertedLoopState = undefined;
            tempFlags = 0;
            tempVariables = undefined;
            emit(node.body);
            ts.Debug.assert(convertedLoopState === undefined);
            convertedLoopState = saveConvertedLoopState;
            tempFlags = saveTempFlags;
            tempVariables = saveTempVariables;
          } else {
            write("{");
            increaseIndent();
            emitCaptureThisForNodeIfNecessary(node);
            writeLine();
            emit(node.body);
            decreaseIndent();
            writeLine();
            var moduleBlock = getInnerMostModuleDeclarationFromDottedModule(node).body;
            emitToken(16, moduleBlock.statements.end);
          }
          write(")(");
          if ((node.flags & 2) && !isES6ExportedDeclaration(node)) {
            emit(node.name);
            write(" = ");
          }
          emitModuleMemberName(node);
          write(" || (");
          emitModuleMemberName(node);
          write(" = {}));");
          emitEnd(node);
          if (!isES6ExportedDeclaration(node) && node.name.kind === 69 && node.parent === currentSourceFile) {
            if (modulekind === 4 && (node.flags & 2)) {
              writeLine();
              write(exportFunctionForFile + "(\"");
              emitDeclarationName(node);
              write("\", ");
              emitDeclarationName(node);
              write(");");
            }
            emitExportMemberAssignments(node.name);
          }
        }
        function tryRenameExternalModule(moduleName) {
          if (renamedDependencies && ts.hasProperty(renamedDependencies, moduleName.text)) {
            return "\"" + renamedDependencies[moduleName.text] + "\"";
          }
          return undefined;
        }
        function emitRequire(moduleName) {
          if (moduleName.kind === 9) {
            write("require(");
            var text = tryRenameExternalModule(moduleName);
            if (text) {
              write(text);
            } else {
              emitStart(moduleName);
              emitLiteral(moduleName);
              emitEnd(moduleName);
            }
            emitToken(18, moduleName.end);
          } else {
            write("require()");
          }
        }
        function getNamespaceDeclarationNode(node) {
          if (node.kind === 224) {
            return node;
          }
          var importClause = node.importClause;
          if (importClause && importClause.namedBindings && importClause.namedBindings.kind === 227) {
            return importClause.namedBindings;
          }
        }
        function isDefaultImport(node) {
          return node.kind === 225 && node.importClause && !!node.importClause.name;
        }
        function emitExportImportAssignments(node) {
          if (ts.isAliasSymbolDeclaration(node) && resolver.isValueAliasDeclaration(node)) {
            emitExportMemberAssignments(node.name);
          }
          ts.forEachChild(node, emitExportImportAssignments);
        }
        function emitImportDeclaration(node) {
          if (modulekind !== 5) {
            return emitExternalImportDeclaration(node);
          }
          if (node.importClause) {
            var shouldEmitDefaultBindings = resolver.isReferencedAliasDeclaration(node.importClause);
            var shouldEmitNamedBindings = node.importClause.namedBindings && resolver.isReferencedAliasDeclaration(node.importClause.namedBindings, true);
            if (shouldEmitDefaultBindings || shouldEmitNamedBindings) {
              write("import ");
              emitStart(node.importClause);
              if (shouldEmitDefaultBindings) {
                emit(node.importClause.name);
                if (shouldEmitNamedBindings) {
                  write(", ");
                }
              }
              if (shouldEmitNamedBindings) {
                emitLeadingComments(node.importClause.namedBindings);
                emitStart(node.importClause.namedBindings);
                if (node.importClause.namedBindings.kind === 227) {
                  write("* as ");
                  emit(node.importClause.namedBindings.name);
                } else {
                  write("{ ");
                  emitExportOrImportSpecifierList(node.importClause.namedBindings.elements, resolver.isReferencedAliasDeclaration);
                  write(" }");
                }
                emitEnd(node.importClause.namedBindings);
                emitTrailingComments(node.importClause.namedBindings);
              }
              emitEnd(node.importClause);
              write(" from ");
              emit(node.moduleSpecifier);
              write(";");
            }
          } else {
            write("import ");
            emit(node.moduleSpecifier);
            write(";");
          }
        }
        function emitExternalImportDeclaration(node) {
          if (ts.contains(externalImports, node)) {
            var isExportedImport = node.kind === 224 && (node.flags & 2) !== 0;
            var namespaceDeclaration = getNamespaceDeclarationNode(node);
            var varOrConst = (languageVersion <= 1) ? "var " : "const ";
            if (modulekind !== 2) {
              emitLeadingComments(node);
              emitStart(node);
              if (namespaceDeclaration && !isDefaultImport(node)) {
                if (!isExportedImport) {
                  write(varOrConst);
                }
                ;
                emitModuleMemberName(namespaceDeclaration);
                write(" = ");
              } else {
                var isNakedImport = 225 && !node.importClause;
                if (!isNakedImport) {
                  write(varOrConst);
                  write(getGeneratedNameForNode(node));
                  write(" = ");
                }
              }
              emitRequire(ts.getExternalModuleName(node));
              if (namespaceDeclaration && isDefaultImport(node)) {
                write(", ");
                emitModuleMemberName(namespaceDeclaration);
                write(" = ");
                write(getGeneratedNameForNode(node));
              }
              write(";");
              emitEnd(node);
              emitExportImportAssignments(node);
              emitTrailingComments(node);
            } else {
              if (isExportedImport) {
                emitModuleMemberName(namespaceDeclaration);
                write(" = ");
                emit(namespaceDeclaration.name);
                write(";");
              } else if (namespaceDeclaration && isDefaultImport(node)) {
                write(varOrConst);
                emitModuleMemberName(namespaceDeclaration);
                write(" = ");
                write(getGeneratedNameForNode(node));
                write(";");
              }
              emitExportImportAssignments(node);
            }
          }
        }
        function emitImportEqualsDeclaration(node) {
          if (ts.isExternalModuleImportEqualsDeclaration(node)) {
            emitExternalImportDeclaration(node);
            return;
          }
          if (resolver.isReferencedAliasDeclaration(node) || (!isCurrentFileExternalModule && resolver.isTopLevelValueImportEqualsWithEntityName(node))) {
            emitLeadingComments(node);
            emitStart(node);
            var variableDeclarationIsHoisted = shouldHoistVariable(node, true);
            var isExported = isSourceFileLevelDeclarationInSystemJsModule(node, true);
            if (!variableDeclarationIsHoisted) {
              ts.Debug.assert(!isExported);
              if (isES6ExportedDeclaration(node)) {
                write("export ");
                write("var ");
              } else if (!(node.flags & 2)) {
                write("var ");
              }
            }
            if (isExported) {
              write(exportFunctionForFile + "(\"");
              emitNodeWithoutSourceMap(node.name);
              write("\", ");
            }
            emitModuleMemberName(node);
            write(" = ");
            emit(node.moduleReference);
            if (isExported) {
              write(")");
            }
            write(";");
            emitEnd(node);
            emitExportImportAssignments(node);
            emitTrailingComments(node);
          }
        }
        function emitExportDeclaration(node) {
          ts.Debug.assert(modulekind !== 4);
          if (modulekind !== 5) {
            if (node.moduleSpecifier && (!node.exportClause || resolver.isValueAliasDeclaration(node))) {
              emitStart(node);
              var generatedName = getGeneratedNameForNode(node);
              if (node.exportClause) {
                if (modulekind !== 2) {
                  write("var ");
                  write(generatedName);
                  write(" = ");
                  emitRequire(ts.getExternalModuleName(node));
                  write(";");
                }
                for (var _a = 0,
                    _b = node.exportClause.elements; _a < _b.length; _a++) {
                  var specifier = _b[_a];
                  if (resolver.isValueAliasDeclaration(specifier)) {
                    writeLine();
                    emitStart(specifier);
                    emitContainingModuleName(specifier);
                    write(".");
                    emitNodeWithCommentsAndWithoutSourcemap(specifier.name);
                    write(" = ");
                    write(generatedName);
                    write(".");
                    emitNodeWithCommentsAndWithoutSourcemap(specifier.propertyName || specifier.name);
                    write(";");
                    emitEnd(specifier);
                  }
                }
              } else {
                if (hasExportStarsToExportValues && resolver.moduleExportsSomeValue(node.moduleSpecifier)) {
                  writeLine();
                  write("__export(");
                  if (modulekind !== 2) {
                    emitRequire(ts.getExternalModuleName(node));
                  } else {
                    write(generatedName);
                  }
                  write(");");
                }
              }
              emitEnd(node);
            }
          } else {
            if (!node.exportClause || resolver.isValueAliasDeclaration(node)) {
              write("export ");
              if (node.exportClause) {
                write("{ ");
                emitExportOrImportSpecifierList(node.exportClause.elements, resolver.isValueAliasDeclaration);
                write(" }");
              } else {
                write("*");
              }
              if (node.moduleSpecifier) {
                write(" from ");
                emit(node.moduleSpecifier);
              }
              write(";");
            }
          }
        }
        function emitExportOrImportSpecifierList(specifiers, shouldEmit) {
          ts.Debug.assert(modulekind === 5);
          var needsComma = false;
          for (var _a = 0,
              specifiers_1 = specifiers; _a < specifiers_1.length; _a++) {
            var specifier = specifiers_1[_a];
            if (shouldEmit(specifier)) {
              if (needsComma) {
                write(", ");
              }
              if (specifier.propertyName) {
                emit(specifier.propertyName);
                write(" as ");
              }
              emit(specifier.name);
              needsComma = true;
            }
          }
        }
        function emitExportAssignment(node) {
          if (!node.isExportEquals && resolver.isValueAliasDeclaration(node)) {
            if (modulekind === 5) {
              writeLine();
              emitStart(node);
              write("export default ");
              var expression = node.expression;
              emit(expression);
              if (expression.kind !== 216 && expression.kind !== 217) {
                write(";");
              }
              emitEnd(node);
            } else {
              writeLine();
              emitStart(node);
              if (modulekind === 4) {
                write(exportFunctionForFile + "(\"default\",");
                emit(node.expression);
                write(")");
              } else {
                emitEs6ExportDefaultCompat(node);
                emitContainingModuleName(node);
                if (languageVersion === 0) {
                  write("[\"default\"] = ");
                } else {
                  write(".default = ");
                }
                emit(node.expression);
              }
              write(";");
              emitEnd(node);
            }
          }
        }
        function collectExternalModuleInfo(sourceFile) {
          externalImports = [];
          exportSpecifiers = {};
          exportEquals = undefined;
          hasExportStarsToExportValues = false;
          for (var _a = 0,
              _b = sourceFile.statements; _a < _b.length; _a++) {
            var node = _b[_a];
            switch (node.kind) {
              case 225:
                if (!node.importClause || resolver.isReferencedAliasDeclaration(node.importClause, true)) {
                  externalImports.push(node);
                }
                break;
              case 224:
                if (node.moduleReference.kind === 235 && resolver.isReferencedAliasDeclaration(node)) {
                  externalImports.push(node);
                }
                break;
              case 231:
                if (node.moduleSpecifier) {
                  if (!node.exportClause) {
                    if (resolver.moduleExportsSomeValue(node.moduleSpecifier)) {
                      externalImports.push(node);
                      hasExportStarsToExportValues = true;
                    }
                  } else if (resolver.isValueAliasDeclaration(node)) {
                    externalImports.push(node);
                  }
                } else {
                  for (var _c = 0,
                      _d = node.exportClause.elements; _c < _d.length; _c++) {
                    var specifier = _d[_c];
                    var name_28 = (specifier.propertyName || specifier.name).text;
                    (exportSpecifiers[name_28] || (exportSpecifiers[name_28] = [])).push(specifier);
                  }
                }
                break;
              case 230:
                if (node.isExportEquals && !exportEquals) {
                  exportEquals = node;
                }
                break;
            }
          }
        }
        function emitExportStarHelper() {
          if (hasExportStarsToExportValues) {
            writeLine();
            write("function __export(m) {");
            increaseIndent();
            writeLine();
            write("for (var p in m) if (!exports.hasOwnProperty(p)) exports[p] = m[p];");
            decreaseIndent();
            writeLine();
            write("}");
          }
        }
        function getLocalNameForExternalImport(node) {
          var namespaceDeclaration = getNamespaceDeclarationNode(node);
          if (namespaceDeclaration && !isDefaultImport(node)) {
            return ts.getTextOfNodeFromSourceText(currentText, namespaceDeclaration.name);
          }
          if (node.kind === 225 && node.importClause) {
            return getGeneratedNameForNode(node);
          }
          if (node.kind === 231 && node.moduleSpecifier) {
            return getGeneratedNameForNode(node);
          }
        }
        function getExternalModuleNameText(importNode, emitRelativePathAsModuleName) {
          if (emitRelativePathAsModuleName) {
            var name_29 = getExternalModuleNameFromDeclaration(host, resolver, importNode);
            if (name_29) {
              return "\"" + name_29 + "\"";
            }
          }
          var moduleName = ts.getExternalModuleName(importNode);
          if (moduleName.kind === 9) {
            return tryRenameExternalModule(moduleName) || getLiteralText(moduleName);
          }
          return undefined;
        }
        function emitVariableDeclarationsForImports() {
          if (externalImports.length === 0) {
            return;
          }
          writeLine();
          var started = false;
          for (var _a = 0,
              externalImports_1 = externalImports; _a < externalImports_1.length; _a++) {
            var importNode = externalImports_1[_a];
            var skipNode = importNode.kind === 231 || (importNode.kind === 225 && !importNode.importClause);
            if (skipNode) {
              continue;
            }
            if (!started) {
              write("var ");
              started = true;
            } else {
              write(", ");
            }
            write(getLocalNameForExternalImport(importNode));
          }
          if (started) {
            write(";");
          }
        }
        function emitLocalStorageForExportedNamesIfNecessary(exportedDeclarations) {
          if (!hasExportStarsToExportValues) {
            return undefined;
          }
          if (!exportedDeclarations && ts.isEmpty(exportSpecifiers)) {
            var hasExportDeclarationWithExportClause = false;
            for (var _a = 0,
                externalImports_2 = externalImports; _a < externalImports_2.length; _a++) {
              var externalImport = externalImports_2[_a];
              if (externalImport.kind === 231 && externalImport.exportClause) {
                hasExportDeclarationWithExportClause = true;
                break;
              }
            }
            if (!hasExportDeclarationWithExportClause) {
              return emitExportStarFunction(undefined);
            }
          }
          var exportedNamesStorageRef = makeUniqueName("exportedNames");
          writeLine();
          write("var " + exportedNamesStorageRef + " = {");
          increaseIndent();
          var started = false;
          if (exportedDeclarations) {
            for (var i = 0; i < exportedDeclarations.length; i++) {
              writeExportedName(exportedDeclarations[i]);
            }
          }
          if (exportSpecifiers) {
            for (var n in exportSpecifiers) {
              for (var _b = 0,
                  _c = exportSpecifiers[n]; _b < _c.length; _b++) {
                var specifier = _c[_b];
                writeExportedName(specifier.name);
              }
            }
          }
          for (var _d = 0,
              externalImports_3 = externalImports; _d < externalImports_3.length; _d++) {
            var externalImport = externalImports_3[_d];
            if (externalImport.kind !== 231) {
              continue;
            }
            var exportDecl = externalImport;
            if (!exportDecl.exportClause) {
              continue;
            }
            for (var _e = 0,
                _f = exportDecl.exportClause.elements; _e < _f.length; _e++) {
              var element = _f[_e];
              writeExportedName(element.name || element.propertyName);
            }
          }
          decreaseIndent();
          writeLine();
          write("};");
          return emitExportStarFunction(exportedNamesStorageRef);
          function emitExportStarFunction(localNames) {
            var exportStarFunction = makeUniqueName("exportStar");
            writeLine();
            write("function " + exportStarFunction + "(m) {");
            increaseIndent();
            writeLine();
            write("var exports = {};");
            writeLine();
            write("for(var n in m) {");
            increaseIndent();
            writeLine();
            write("if (n !== \"default\"");
            if (localNames) {
              write("&& !" + localNames + ".hasOwnProperty(n)");
            }
            write(") exports[n] = m[n];");
            decreaseIndent();
            writeLine();
            write("}");
            writeLine();
            write(exportFunctionForFile + "(exports);");
            decreaseIndent();
            writeLine();
            write("}");
            return exportStarFunction;
          }
          function writeExportedName(node) {
            if (node.kind !== 69 && node.flags & 512) {
              return;
            }
            if (started) {
              write(",");
            } else {
              started = true;
            }
            writeLine();
            write("'");
            if (node.kind === 69) {
              emitNodeWithCommentsAndWithoutSourcemap(node);
            } else {
              emitDeclarationName(node);
            }
            write("': true");
          }
        }
        function processTopLevelVariableAndFunctionDeclarations(node) {
          var hoistedVars;
          var hoistedFunctionDeclarations;
          var exportedDeclarations;
          visit(node);
          if (hoistedVars) {
            writeLine();
            write("var ");
            var seen = {};
            for (var i = 0; i < hoistedVars.length; i++) {
              var local = hoistedVars[i];
              var name_30 = local.kind === 69 ? local : local.name;
              if (name_30) {
                var text = ts.unescapeIdentifier(name_30.text);
                if (ts.hasProperty(seen, text)) {
                  continue;
                } else {
                  seen[text] = text;
                }
              }
              if (i !== 0) {
                write(", ");
              }
              if (local.kind === 217 || local.kind === 221 || local.kind === 220) {
                emitDeclarationName(local);
              } else {
                emit(local);
              }
              var flags = ts.getCombinedNodeFlags(local.kind === 69 ? local.parent : local);
              if (flags & 2) {
                if (!exportedDeclarations) {
                  exportedDeclarations = [];
                }
                exportedDeclarations.push(local);
              }
            }
            write(";");
          }
          if (hoistedFunctionDeclarations) {
            for (var _a = 0,
                hoistedFunctionDeclarations_1 = hoistedFunctionDeclarations; _a < hoistedFunctionDeclarations_1.length; _a++) {
              var f = hoistedFunctionDeclarations_1[_a];
              writeLine();
              emit(f);
              if (f.flags & 2) {
                if (!exportedDeclarations) {
                  exportedDeclarations = [];
                }
                exportedDeclarations.push(f);
              }
            }
          }
          return exportedDeclarations;
          function visit(node) {
            if (node.flags & 4) {
              return;
            }
            if (node.kind === 216) {
              if (!hoistedFunctionDeclarations) {
                hoistedFunctionDeclarations = [];
              }
              hoistedFunctionDeclarations.push(node);
              return;
            }
            if (node.kind === 217) {
              if (!hoistedVars) {
                hoistedVars = [];
              }
              hoistedVars.push(node);
              return;
            }
            if (node.kind === 220) {
              if (shouldEmitEnumDeclaration(node)) {
                if (!hoistedVars) {
                  hoistedVars = [];
                }
                hoistedVars.push(node);
              }
              return;
            }
            if (node.kind === 221) {
              if (shouldEmitModuleDeclaration(node)) {
                if (!hoistedVars) {
                  hoistedVars = [];
                }
                hoistedVars.push(node);
              }
              return;
            }
            if (node.kind === 214 || node.kind === 166) {
              if (shouldHoistVariable(node, false)) {
                var name_31 = node.name;
                if (name_31.kind === 69) {
                  if (!hoistedVars) {
                    hoistedVars = [];
                  }
                  hoistedVars.push(name_31);
                } else {
                  ts.forEachChild(name_31, visit);
                }
              }
              return;
            }
            if (ts.isInternalModuleImportEqualsDeclaration(node) && resolver.isValueAliasDeclaration(node)) {
              if (!hoistedVars) {
                hoistedVars = [];
              }
              hoistedVars.push(node.name);
              return;
            }
            if (ts.isBindingPattern(node)) {
              ts.forEach(node.elements, visit);
              return;
            }
            if (!ts.isDeclaration(node)) {
              ts.forEachChild(node, visit);
            }
          }
        }
        function shouldHoistVariable(node, checkIfSourceFileLevelDecl) {
          if (checkIfSourceFileLevelDecl && !shouldHoistDeclarationInSystemJsModule(node)) {
            return false;
          }
          return (ts.getCombinedNodeFlags(node) & 24576) === 0 || ts.getEnclosingBlockScopeContainer(node).kind === 251;
        }
        function isCurrentFileSystemExternalModule() {
          return modulekind === 4 && isCurrentFileExternalModule;
        }
        function emitSystemModuleBody(node, dependencyGroups, startIndex) {
          emitVariableDeclarationsForImports();
          writeLine();
          var exportedDeclarations = processTopLevelVariableAndFunctionDeclarations(node);
          var exportStarFunction = emitLocalStorageForExportedNamesIfNecessary(exportedDeclarations);
          writeLine();
          write("return {");
          increaseIndent();
          writeLine();
          emitSetters(exportStarFunction, dependencyGroups);
          writeLine();
          emitExecute(node, startIndex);
          decreaseIndent();
          writeLine();
          write("}");
          emitTempDeclarations(true);
        }
        function emitSetters(exportStarFunction, dependencyGroups) {
          write("setters:[");
          for (var i = 0; i < dependencyGroups.length; i++) {
            if (i !== 0) {
              write(",");
            }
            writeLine();
            increaseIndent();
            var group = dependencyGroups[i];
            var parameterName = makeUniqueName(ts.forEach(group, getLocalNameForExternalImport) || "");
            write("function (" + parameterName + ") {");
            increaseIndent();
            for (var _a = 0,
                group_1 = group; _a < group_1.length; _a++) {
              var entry = group_1[_a];
              var importVariableName = getLocalNameForExternalImport(entry) || "";
              switch (entry.kind) {
                case 225:
                  if (!entry.importClause) {
                    break;
                  }
                case 224:
                  ts.Debug.assert(importVariableName !== "");
                  writeLine();
                  write(importVariableName + " = " + parameterName + ";");
                  writeLine();
                  break;
                case 231:
                  ts.Debug.assert(importVariableName !== "");
                  if (entry.exportClause) {
                    writeLine();
                    write(exportFunctionForFile + "({");
                    writeLine();
                    increaseIndent();
                    for (var i_1 = 0,
                        len = entry.exportClause.elements.length; i_1 < len; i_1++) {
                      if (i_1 !== 0) {
                        write(",");
                        writeLine();
                      }
                      var e = entry.exportClause.elements[i_1];
                      write("\"");
                      emitNodeWithCommentsAndWithoutSourcemap(e.name);
                      write("\": " + parameterName + "[\"");
                      emitNodeWithCommentsAndWithoutSourcemap(e.propertyName || e.name);
                      write("\"]");
                    }
                    decreaseIndent();
                    writeLine();
                    write("});");
                  } else {
                    writeLine();
                    write(exportStarFunction + "(" + parameterName + ");");
                  }
                  writeLine();
                  break;
              }
            }
            decreaseIndent();
            write("}");
            decreaseIndent();
          }
          write("],");
        }
        function emitExecute(node, startIndex) {
          write("execute: function() {");
          increaseIndent();
          writeLine();
          for (var i = startIndex; i < node.statements.length; i++) {
            var statement = node.statements[i];
            switch (statement.kind) {
              case 216:
              case 225:
                continue;
              case 231:
                if (!statement.moduleSpecifier) {
                  for (var _a = 0,
                      _b = statement.exportClause.elements; _a < _b.length; _a++) {
                    var element = _b[_a];
                    emitExportSpecifierInSystemModule(element);
                  }
                }
                continue;
              case 224:
                if (!ts.isInternalModuleImportEqualsDeclaration(statement)) {
                  continue;
                }
              default:
                writeLine();
                emit(statement);
            }
          }
          decreaseIndent();
          writeLine();
          write("}");
        }
        function writeModuleName(node, emitRelativePathAsModuleName) {
          var moduleName = node.moduleName;
          if (moduleName || (emitRelativePathAsModuleName && (moduleName = getResolvedExternalModuleName(host, node)))) {
            write("\"" + moduleName + "\", ");
          }
        }
        function emitSystemModule(node, emitRelativePathAsModuleName) {
          collectExternalModuleInfo(node);
          ts.Debug.assert(!exportFunctionForFile);
          exportFunctionForFile = makeUniqueName("exports");
          contextObjectForFile = makeUniqueName("context");
          writeLine();
          write("System.register(");
          writeModuleName(node, emitRelativePathAsModuleName);
          write("[");
          var groupIndices = {};
          var dependencyGroups = [];
          for (var i = 0; i < externalImports.length; i++) {
            var text = getExternalModuleNameText(externalImports[i], emitRelativePathAsModuleName);
            if (text === undefined) {
              continue;
            }
            var key = text.substr(1, text.length - 2);
            if (ts.hasProperty(groupIndices, key)) {
              var groupIndex = groupIndices[key];
              dependencyGroups[groupIndex].push(externalImports[i]);
              continue;
            } else {
              groupIndices[key] = dependencyGroups.length;
              dependencyGroups.push([externalImports[i]]);
            }
            if (i !== 0) {
              write(", ");
            }
            write(text);
          }
          write("], function(" + exportFunctionForFile + ", " + contextObjectForFile + ") {");
          writeLine();
          increaseIndent();
          var startIndex = emitDirectivePrologues(node.statements, true, !compilerOptions.noImplicitUseStrict);
          writeLine();
          write("var __moduleName = " + contextObjectForFile + " && " + contextObjectForFile + ".id;");
          writeLine();
          emitEmitHelpers(node);
          emitCaptureThisForNodeIfNecessary(node);
          emitSystemModuleBody(node, dependencyGroups, startIndex);
          decreaseIndent();
          writeLine();
          write("});");
        }
        function getAMDDependencyNames(node, includeNonAmdDependencies, emitRelativePathAsModuleName) {
          var aliasedModuleNames = [];
          var unaliasedModuleNames = [];
          var importAliasNames = [];
          for (var _a = 0,
              _b = node.amdDependencies; _a < _b.length; _a++) {
            var amdDependency = _b[_a];
            if (amdDependency.name) {
              aliasedModuleNames.push("\"" + amdDependency.path + "\"");
              importAliasNames.push(amdDependency.name);
            } else {
              unaliasedModuleNames.push("\"" + amdDependency.path + "\"");
            }
          }
          for (var _c = 0,
              externalImports_4 = externalImports; _c < externalImports_4.length; _c++) {
            var importNode = externalImports_4[_c];
            var externalModuleName = getExternalModuleNameText(importNode, emitRelativePathAsModuleName);
            var importAliasName = getLocalNameForExternalImport(importNode);
            if (includeNonAmdDependencies && importAliasName) {
              aliasedModuleNames.push(externalModuleName);
              importAliasNames.push(importAliasName);
            } else {
              unaliasedModuleNames.push(externalModuleName);
            }
          }
          return {
            aliasedModuleNames: aliasedModuleNames,
            unaliasedModuleNames: unaliasedModuleNames,
            importAliasNames: importAliasNames
          };
        }
        function emitAMDDependencies(node, includeNonAmdDependencies, emitRelativePathAsModuleName) {
          var dependencyNames = getAMDDependencyNames(node, includeNonAmdDependencies, emitRelativePathAsModuleName);
          emitAMDDependencyList(dependencyNames);
          write(", ");
          emitAMDFactoryHeader(dependencyNames);
        }
        function emitAMDDependencyList(_a) {
          var aliasedModuleNames = _a.aliasedModuleNames,
              unaliasedModuleNames = _a.unaliasedModuleNames;
          write("[\"require\", \"exports\"");
          if (aliasedModuleNames.length) {
            write(", ");
            write(aliasedModuleNames.join(", "));
          }
          if (unaliasedModuleNames.length) {
            write(", ");
            write(unaliasedModuleNames.join(", "));
          }
          write("]");
        }
        function emitAMDFactoryHeader(_a) {
          var importAliasNames = _a.importAliasNames;
          write("function (require, exports");
          if (importAliasNames.length) {
            write(", ");
            write(importAliasNames.join(", "));
          }
          write(") {");
        }
        function emitAMDModule(node, emitRelativePathAsModuleName) {
          emitEmitHelpers(node);
          collectExternalModuleInfo(node);
          writeLine();
          write("define(");
          writeModuleName(node, emitRelativePathAsModuleName);
          emitAMDDependencies(node, true, emitRelativePathAsModuleName);
          increaseIndent();
          var startIndex = emitDirectivePrologues(node.statements, true, !compilerOptions.noImplicitUseStrict);
          emitExportStarHelper();
          emitCaptureThisForNodeIfNecessary(node);
          emitLinesStartingAt(node.statements, startIndex);
          emitTempDeclarations(true);
          emitExportEquals(true);
          decreaseIndent();
          writeLine();
          write("});");
        }
        function emitCommonJSModule(node) {
          var startIndex = emitDirectivePrologues(node.statements, false, !compilerOptions.noImplicitUseStrict);
          emitEmitHelpers(node);
          collectExternalModuleInfo(node);
          emitExportStarHelper();
          emitCaptureThisForNodeIfNecessary(node);
          emitLinesStartingAt(node.statements, startIndex);
          emitTempDeclarations(true);
          emitExportEquals(false);
        }
        function emitUMDModule(node) {
          emitEmitHelpers(node);
          collectExternalModuleInfo(node);
          var dependencyNames = getAMDDependencyNames(node, false);
          writeLines("(function (factory) {\n    if (typeof module === 'object' && typeof module.exports === 'object') {\n        var v = factory(require, exports); if (v !== undefined) module.exports = v;\n    }\n    else if (typeof define === 'function' && define.amd) {\n        define(");
          emitAMDDependencyList(dependencyNames);
          write(", factory);");
          writeLines("    }\n})(");
          emitAMDFactoryHeader(dependencyNames);
          increaseIndent();
          var startIndex = emitDirectivePrologues(node.statements, true, !compilerOptions.noImplicitUseStrict);
          emitExportStarHelper();
          emitCaptureThisForNodeIfNecessary(node);
          emitLinesStartingAt(node.statements, startIndex);
          emitTempDeclarations(true);
          emitExportEquals(true);
          decreaseIndent();
          writeLine();
          write("});");
        }
        function emitES6Module(node) {
          externalImports = undefined;
          exportSpecifiers = undefined;
          exportEquals = undefined;
          hasExportStarsToExportValues = false;
          var startIndex = emitDirectivePrologues(node.statements, false);
          emitEmitHelpers(node);
          emitCaptureThisForNodeIfNecessary(node);
          emitLinesStartingAt(node.statements, startIndex);
          emitTempDeclarations(true);
        }
        function emitExportEquals(emitAsReturn) {
          if (exportEquals && resolver.isValueAliasDeclaration(exportEquals)) {
            writeLine();
            emitStart(exportEquals);
            write(emitAsReturn ? "return " : "module.exports = ");
            emit(exportEquals.expression);
            write(";");
            emitEnd(exportEquals);
          }
        }
        function emitJsxElement(node) {
          switch (compilerOptions.jsx) {
            case 2:
              jsxEmitReact(node);
              break;
            case 1:
            default:
              jsxEmitPreserve(node);
              break;
          }
        }
        function trimReactWhitespaceAndApplyEntities(node) {
          var result = undefined;
          var text = ts.getTextOfNode(node, true);
          var firstNonWhitespace = 0;
          var lastNonWhitespace = -1;
          for (var i = 0; i < text.length; i++) {
            var c = text.charCodeAt(i);
            if (ts.isLineBreak(c)) {
              if (firstNonWhitespace !== -1 && (lastNonWhitespace - firstNonWhitespace + 1 > 0)) {
                var part = text.substr(firstNonWhitespace, lastNonWhitespace - firstNonWhitespace + 1);
                result = (result ? result + "\" + ' ' + \"" : "") + ts.escapeString(part);
              }
              firstNonWhitespace = -1;
            } else if (!ts.isWhiteSpace(c)) {
              lastNonWhitespace = i;
              if (firstNonWhitespace === -1) {
                firstNonWhitespace = i;
              }
            }
          }
          if (firstNonWhitespace !== -1) {
            var part = text.substr(firstNonWhitespace);
            result = (result ? result + "\" + ' ' + \"" : "") + ts.escapeString(part);
          }
          if (result) {
            result = result.replace(/&(\w+);/g, function(s, m) {
              if (entities[m] !== undefined) {
                var ch = String.fromCharCode(entities[m]);
                return ch === "\"" ? "\\\"" : ch;
              } else {
                return s;
              }
            });
          }
          return result;
        }
        function getTextToEmit(node) {
          switch (compilerOptions.jsx) {
            case 2:
              var text = trimReactWhitespaceAndApplyEntities(node);
              if (text === undefined || text.length === 0) {
                return undefined;
              } else {
                return text;
              }
            case 1:
            default:
              return ts.getTextOfNode(node, true);
          }
        }
        function emitJsxText(node) {
          switch (compilerOptions.jsx) {
            case 2:
              write("\"");
              write(trimReactWhitespaceAndApplyEntities(node));
              write("\"");
              break;
            case 1:
            default:
              writer.writeLiteral(ts.getTextOfNode(node, true));
              break;
          }
        }
        function emitJsxExpression(node) {
          if (node.expression) {
            switch (compilerOptions.jsx) {
              case 1:
              default:
                write("{");
                emit(node.expression);
                write("}");
                break;
              case 2:
                emit(node.expression);
                break;
            }
          }
        }
        function isUseStrictPrologue(node) {
          return !!node.expression.text.match(/use strict/);
        }
        function ensureUseStrictPrologue(startWithNewLine, writeUseStrict) {
          if (writeUseStrict) {
            if (startWithNewLine) {
              writeLine();
            }
            write("\"use strict\";");
          }
        }
        function emitDirectivePrologues(statements, startWithNewLine, ensureUseStrict) {
          var foundUseStrict = false;
          for (var i = 0; i < statements.length; i++) {
            if (ts.isPrologueDirective(statements[i])) {
              if (isUseStrictPrologue(statements[i])) {
                foundUseStrict = true;
              }
              if (startWithNewLine || i > 0) {
                writeLine();
              }
              emit(statements[i]);
            } else {
              ensureUseStrictPrologue(startWithNewLine || i > 0, !foundUseStrict && ensureUseStrict);
              return i;
            }
          }
          ensureUseStrictPrologue(startWithNewLine, !foundUseStrict && ensureUseStrict);
          return statements.length;
        }
        function writeLines(text) {
          var lines = text.split(/\r\n|\r|\n/g);
          for (var i = 0; i < lines.length; i++) {
            var line = lines[i];
            if (line.length) {
              writeLine();
              write(line);
            }
          }
        }
        function emitEmitHelpers(node) {
          if (!compilerOptions.noEmitHelpers) {
            if (languageVersion < 2 && !extendsEmitted && node.flags & 4194304) {
              writeLines(extendsHelper);
              extendsEmitted = true;
            }
            if (compilerOptions.jsx !== 1 && !assignEmitted && (node.flags & 1073741824)) {
              writeLines(assignHelper);
              assignEmitted = true;
            }
            if (!decorateEmitted && node.flags & 8388608) {
              writeLines(decorateHelper);
              if (compilerOptions.emitDecoratorMetadata) {
                writeLines(metadataHelper);
              }
              decorateEmitted = true;
            }
            if (!paramEmitted && node.flags & 16777216) {
              writeLines(paramHelper);
              paramEmitted = true;
            }
            if (!awaiterEmitted && node.flags & 33554432) {
              writeLines(awaiterHelper);
              awaiterEmitted = true;
            }
          }
        }
        function emitSourceFileNode(node) {
          writeLine();
          emitShebang();
          emitDetachedCommentsAndUpdateCommentsInfo(node);
          if (ts.isExternalModule(node) || compilerOptions.isolatedModules) {
            if (isOwnFileEmit || (!ts.isExternalModule(node) && compilerOptions.isolatedModules)) {
              var emitModule = moduleEmitDelegates[modulekind] || moduleEmitDelegates[1];
              emitModule(node);
            } else {
              bundleEmitDelegates[modulekind](node, true);
            }
          } else {
            var startIndex = emitDirectivePrologues(node.statements, false);
            externalImports = undefined;
            exportSpecifiers = undefined;
            exportEquals = undefined;
            hasExportStarsToExportValues = false;
            emitEmitHelpers(node);
            emitCaptureThisForNodeIfNecessary(node);
            emitLinesStartingAt(node.statements, startIndex);
            emitTempDeclarations(true);
          }
          emitLeadingComments(node.endOfFileToken);
        }
        function emit(node) {
          emitNodeConsideringCommentsOption(node, emitNodeWithSourceMap);
        }
        function emitNodeWithCommentsAndWithoutSourcemap(node) {
          emitNodeConsideringCommentsOption(node, emitNodeWithoutSourceMap);
        }
        function emitNodeConsideringCommentsOption(node, emitNodeConsideringSourcemap) {
          if (node) {
            if (node.flags & 4) {
              return emitCommentsOnNotEmittedNode(node);
            }
            if (isSpecializedCommentHandling(node)) {
              return emitNodeWithoutSourceMap(node);
            }
            var emitComments_1 = shouldEmitLeadingAndTrailingComments(node);
            if (emitComments_1) {
              emitLeadingComments(node);
            }
            emitNodeConsideringSourcemap(node);
            if (emitComments_1) {
              emitTrailingComments(node);
            }
          }
        }
        function emitNodeWithSourceMap(node) {
          if (node) {
            emitStart(node);
            emitNodeWithoutSourceMap(node);
            emitEnd(node);
          }
        }
        function emitNodeWithoutSourceMap(node) {
          if (node) {
            emitJavaScriptWorker(node);
          }
        }
        function changeSourceMapEmit(writer) {
          sourceMap = writer;
          emitStart = writer.emitStart;
          emitEnd = writer.emitEnd;
          emitPos = writer.emitPos;
          setSourceFile = writer.setSourceFile;
        }
        function withTemporaryNoSourceMap(callback) {
          var prevSourceMap = sourceMap;
          setSourceMapWriterEmit(ts.getNullSourceMapWriter());
          callback();
          setSourceMapWriterEmit(prevSourceMap);
        }
        function isSpecializedCommentHandling(node) {
          switch (node.kind) {
            case 218:
            case 216:
            case 225:
            case 224:
            case 219:
            case 230:
              return true;
          }
        }
        function shouldEmitLeadingAndTrailingComments(node) {
          switch (node.kind) {
            case 196:
              return shouldEmitLeadingAndTrailingCommentsForVariableStatement(node);
            case 221:
              return shouldEmitModuleDeclaration(node);
            case 220:
              return shouldEmitEnumDeclaration(node);
          }
          ts.Debug.assert(!isSpecializedCommentHandling(node));
          if (node.kind !== 195 && node.parent && node.parent.kind === 177 && node.parent.body === node && compilerOptions.target <= 1) {
            return false;
          }
          return true;
        }
        function emitJavaScriptWorker(node) {
          switch (node.kind) {
            case 69:
              return emitIdentifier(node);
            case 139:
              return emitParameter(node);
            case 144:
            case 143:
              return emitMethod(node);
            case 146:
            case 147:
              return emitAccessor(node);
            case 97:
              return emitThis(node);
            case 95:
              return emitSuper(node);
            case 93:
              return write("null");
            case 99:
              return write("true");
            case 84:
              return write("false");
            case 8:
            case 9:
            case 10:
            case 11:
            case 12:
            case 13:
            case 14:
              return emitLiteral(node);
            case 186:
              return emitTemplateExpression(node);
            case 193:
              return emitTemplateSpan(node);
            case 236:
            case 237:
              return emitJsxElement(node);
            case 239:
              return emitJsxText(node);
            case 243:
              return emitJsxExpression(node);
            case 136:
              return emitQualifiedName(node);
            case 164:
              return emitObjectBindingPattern(node);
            case 165:
              return emitArrayBindingPattern(node);
            case 166:
              return emitBindingElement(node);
            case 167:
              return emitArrayLiteral(node);
            case 168:
              return emitObjectLiteral(node);
            case 248:
              return emitPropertyAssignment(node);
            case 249:
              return emitShorthandPropertyAssignment(node);
            case 137:
              return emitComputedPropertyName(node);
            case 169:
              return emitPropertyAccess(node);
            case 170:
              return emitIndexedAccess(node);
            case 171:
              return emitCallExpression(node);
            case 172:
              return emitNewExpression(node);
            case 173:
              return emitTaggedTemplateExpression(node);
            case 174:
              return emit(node.expression);
            case 192:
              return emit(node.expression);
            case 175:
              return emitParenExpression(node);
            case 216:
            case 176:
            case 177:
              return emitFunctionDeclaration(node);
            case 178:
              return emitDeleteExpression(node);
            case 179:
              return emitTypeOfExpression(node);
            case 180:
              return emitVoidExpression(node);
            case 181:
              return emitAwaitExpression(node);
            case 182:
              return emitPrefixUnaryExpression(node);
            case 183:
              return emitPostfixUnaryExpression(node);
            case 184:
              return emitBinaryExpression(node);
            case 185:
              return emitConditionalExpression(node);
            case 188:
              return emitSpreadElementExpression(node);
            case 187:
              return emitYieldExpression(node);
            case 190:
              return;
            case 195:
            case 222:
              return emitBlock(node);
            case 196:
              return emitVariableStatement(node);
            case 197:
              return write(";");
            case 198:
              return emitExpressionStatement(node);
            case 199:
              return emitIfStatement(node);
            case 200:
              return emitDoStatement(node);
            case 201:
              return emitWhileStatement(node);
            case 202:
              return emitForStatement(node);
            case 204:
            case 203:
              return emitForInOrForOfStatement(node);
            case 205:
            case 206:
              return emitBreakOrContinueStatement(node);
            case 207:
              return emitReturnStatement(node);
            case 208:
              return emitWithStatement(node);
            case 209:
              return emitSwitchStatement(node);
            case 244:
            case 245:
              return emitCaseOrDefaultClause(node);
            case 210:
              return emitLabeledStatement(node);
            case 211:
              return emitThrowStatement(node);
            case 212:
              return emitTryStatement(node);
            case 247:
              return emitCatchClause(node);
            case 213:
              return emitDebuggerStatement(node);
            case 214:
              return emitVariableDeclaration(node);
            case 189:
              return emitClassExpression(node);
            case 217:
              return emitClassDeclaration(node);
            case 218:
              return emitInterfaceDeclaration(node);
            case 220:
              return emitEnumDeclaration(node);
            case 250:
              return emitEnumMember(node);
            case 221:
              return emitModuleDeclaration(node);
            case 225:
              return emitImportDeclaration(node);
            case 224:
              return emitImportEqualsDeclaration(node);
            case 231:
              return emitExportDeclaration(node);
            case 230:
              return emitExportAssignment(node);
            case 251:
              return emitSourceFileNode(node);
          }
        }
        function hasDetachedComments(pos) {
          return detachedCommentsInfo !== undefined && ts.lastOrUndefined(detachedCommentsInfo).nodePos === pos;
        }
        function getLeadingCommentsWithoutDetachedComments() {
          var leadingComments = ts.getLeadingCommentRanges(currentText, ts.lastOrUndefined(detachedCommentsInfo).detachedCommentEndPos);
          if (detachedCommentsInfo.length - 1) {
            detachedCommentsInfo.pop();
          } else {
            detachedCommentsInfo = undefined;
          }
          return leadingComments;
        }
        function isTripleSlashComment(comment) {
          if (currentText.charCodeAt(comment.pos + 1) === 47 && comment.pos + 2 < comment.end && currentText.charCodeAt(comment.pos + 2) === 47) {
            var textSubStr = currentText.substring(comment.pos, comment.end);
            return textSubStr.match(ts.fullTripleSlashReferencePathRegEx) || textSubStr.match(ts.fullTripleSlashAMDReferencePathRegEx) ? true : false;
          }
          return false;
        }
        function getLeadingCommentsToEmit(node) {
          if (node.parent) {
            if (node.parent.kind === 251 || node.pos !== node.parent.pos) {
              if (hasDetachedComments(node.pos)) {
                return getLeadingCommentsWithoutDetachedComments();
              } else {
                return ts.getLeadingCommentRangesOfNodeFromText(node, currentText);
              }
            }
          }
        }
        function getTrailingCommentsToEmit(node) {
          if (node.parent) {
            if (node.parent.kind === 251 || node.end !== node.parent.end) {
              return ts.getTrailingCommentRanges(currentText, node.end);
            }
          }
        }
        function emitCommentsOnNotEmittedNode(node) {
          emitLeadingCommentsWorker(node, false);
        }
        function emitLeadingComments(node) {
          return emitLeadingCommentsWorker(node, true);
        }
        function emitLeadingCommentsWorker(node, isEmittedNode) {
          if (compilerOptions.removeComments) {
            return;
          }
          var leadingComments;
          if (isEmittedNode) {
            leadingComments = getLeadingCommentsToEmit(node);
          } else {
            if (node.pos === 0) {
              leadingComments = ts.filter(getLeadingCommentsToEmit(node), isTripleSlashComment);
            }
          }
          ts.emitNewLineBeforeLeadingComments(currentLineMap, writer, node, leadingComments);
          ts.emitComments(currentText, currentLineMap, writer, leadingComments, true, newLine, writeComment);
        }
        function emitTrailingComments(node) {
          if (compilerOptions.removeComments) {
            return;
          }
          var trailingComments = getTrailingCommentsToEmit(node);
          ts.emitComments(currentText, currentLineMap, writer, trailingComments, false, newLine, writeComment);
        }
        function emitTrailingCommentsOfPosition(pos) {
          if (compilerOptions.removeComments) {
            return;
          }
          var trailingComments = ts.getTrailingCommentRanges(currentText, pos);
          ts.emitComments(currentText, currentLineMap, writer, trailingComments, true, newLine, writeComment);
        }
        function emitLeadingCommentsOfPositionWorker(pos) {
          if (compilerOptions.removeComments) {
            return;
          }
          var leadingComments;
          if (hasDetachedComments(pos)) {
            leadingComments = getLeadingCommentsWithoutDetachedComments();
          } else {
            leadingComments = ts.getLeadingCommentRanges(currentText, pos);
          }
          ts.emitNewLineBeforeLeadingComments(currentLineMap, writer, {
            pos: pos,
            end: pos
          }, leadingComments);
          ts.emitComments(currentText, currentLineMap, writer, leadingComments, true, newLine, writeComment);
        }
        function emitDetachedCommentsAndUpdateCommentsInfo(node) {
          var currentDetachedCommentInfo = ts.emitDetachedComments(currentText, currentLineMap, writer, writeComment, node, newLine, compilerOptions.removeComments);
          if (currentDetachedCommentInfo) {
            if (detachedCommentsInfo) {
              detachedCommentsInfo.push(currentDetachedCommentInfo);
            } else {
              detachedCommentsInfo = [currentDetachedCommentInfo];
            }
          }
        }
        function writeComment(text, lineMap, writer, comment, newLine) {
          emitPos(comment.pos);
          ts.writeCommentRange(text, lineMap, writer, comment, newLine);
          emitPos(comment.end);
        }
        function emitShebang() {
          var shebang = ts.getShebang(currentText);
          if (shebang) {
            write(shebang);
            writeLine();
          }
        }
        var _a,
            _b;
      }
      function emitFile(_a, sourceFiles, isBundledEmit) {
        var jsFilePath = _a.jsFilePath,
            sourceMapFilePath = _a.sourceMapFilePath,
            declarationFilePath = _a.declarationFilePath;
        if (!host.isEmitBlocked(jsFilePath) && !compilerOptions.noEmit) {
          emitJavaScript(jsFilePath, sourceMapFilePath, sourceFiles, isBundledEmit);
        } else {
          emitSkipped = true;
        }
        if (declarationFilePath) {
          emitSkipped = ts.writeDeclarationFile(declarationFilePath, sourceFiles, isBundledEmit, host, resolver, emitterDiagnostics) || emitSkipped;
        }
      }
    }
    ts.emitFiles = emitFiles;
  })(ts || (ts = {}));
  var ts;
  (function(ts) {
    ts.programTime = 0;
    ts.emitTime = 0;
    ts.ioReadTime = 0;
    ts.ioWriteTime = 0;
    ts.maxProgramSizeForNonTsFiles = 20 * 1024 * 1024;
    var emptyArray = [];
    ts.version = "1.8.10";
    function findConfigFile(searchPath, fileExists) {
      var fileName = "tsconfig.json";
      while (true) {
        if (fileExists(fileName)) {
          return fileName;
        }
        var parentPath = ts.getDirectoryPath(searchPath);
        if (parentPath === searchPath) {
          break;
        }
        searchPath = parentPath;
        fileName = "../" + fileName;
      }
      return undefined;
    }
    ts.findConfigFile = findConfigFile;
    function resolveTripleslashReference(moduleName, containingFile) {
      var basePath = ts.getDirectoryPath(containingFile);
      var referencedFileName = ts.isRootedDiskPath(moduleName) ? moduleName : ts.combinePaths(basePath, moduleName);
      return ts.normalizePath(referencedFileName);
    }
    ts.resolveTripleslashReference = resolveTripleslashReference;
    function resolveModuleName(moduleName, containingFile, compilerOptions, host) {
      var moduleResolution = compilerOptions.moduleResolution !== undefined ? compilerOptions.moduleResolution : ts.getEmitModuleKind(compilerOptions) === 1 ? 2 : 1;
      switch (moduleResolution) {
        case 2:
          return nodeModuleNameResolver(moduleName, containingFile, compilerOptions, host);
        case 1:
          return classicNameResolver(moduleName, containingFile, compilerOptions, host);
      }
    }
    ts.resolveModuleName = resolveModuleName;
    function nodeModuleNameResolver(moduleName, containingFile, compilerOptions, host) {
      var containingDirectory = ts.getDirectoryPath(containingFile);
      var supportedExtensions = ts.getSupportedExtensions(compilerOptions);
      if (ts.getRootLength(moduleName) !== 0 || nameStartsWithDotSlashOrDotDotSlash(moduleName)) {
        var failedLookupLocations = [];
        var candidate = ts.normalizePath(ts.combinePaths(containingDirectory, moduleName));
        var resolvedFileName = loadNodeModuleFromFile(supportedExtensions, candidate, failedLookupLocations, false, host);
        if (resolvedFileName) {
          return {
            resolvedModule: {resolvedFileName: resolvedFileName},
            failedLookupLocations: failedLookupLocations
          };
        }
        resolvedFileName = loadNodeModuleFromDirectory(supportedExtensions, candidate, failedLookupLocations, false, host);
        return resolvedFileName ? {
          resolvedModule: {resolvedFileName: resolvedFileName},
          failedLookupLocations: failedLookupLocations
        } : {
          resolvedModule: undefined,
          failedLookupLocations: failedLookupLocations
        };
      } else {
        return loadModuleFromNodeModules(moduleName, containingDirectory, host);
      }
    }
    ts.nodeModuleNameResolver = nodeModuleNameResolver;
    function directoryProbablyExists(directoryName, host) {
      return !host.directoryExists || host.directoryExists(directoryName);
    }
    ts.directoryProbablyExists = directoryProbablyExists;
    function loadNodeModuleFromFile(extensions, candidate, failedLookupLocation, onlyRecordFailures, host) {
      return ts.forEach(extensions, tryLoad);
      function tryLoad(ext) {
        var fileName = ts.fileExtensionIs(candidate, ext) ? candidate : candidate + ext;
        if (!onlyRecordFailures && host.fileExists(fileName)) {
          return fileName;
        } else {
          failedLookupLocation.push(fileName);
          return undefined;
        }
      }
    }
    function loadNodeModuleFromDirectory(extensions, candidate, failedLookupLocation, onlyRecordFailures, host) {
      var packageJsonPath = ts.combinePaths(candidate, "package.json");
      var directoryExists = !onlyRecordFailures && directoryProbablyExists(candidate, host);
      if (directoryExists && host.fileExists(packageJsonPath)) {
        var jsonContent = void 0;
        try {
          var jsonText = host.readFile(packageJsonPath);
          jsonContent = jsonText ? JSON.parse(jsonText) : {typings: undefined};
        } catch (e) {
          jsonContent = {typings: undefined};
        }
        if (typeof jsonContent.typings === "string") {
          var path = ts.normalizePath(ts.combinePaths(candidate, jsonContent.typings));
          var result = loadNodeModuleFromFile(extensions, path, failedLookupLocation, !directoryProbablyExists(ts.getDirectoryPath(path), host), host);
          if (result) {
            return result;
          }
        }
      } else {
        failedLookupLocation.push(packageJsonPath);
      }
      return loadNodeModuleFromFile(extensions, ts.combinePaths(candidate, "index"), failedLookupLocation, !directoryExists, host);
    }
    function loadModuleFromNodeModules(moduleName, directory, host) {
      var failedLookupLocations = [];
      directory = ts.normalizeSlashes(directory);
      while (true) {
        var baseName = ts.getBaseFileName(directory);
        if (baseName !== "node_modules") {
          var nodeModulesFolder = ts.combinePaths(directory, "node_modules");
          var nodeModulesFolderExists = directoryProbablyExists(nodeModulesFolder, host);
          var candidate = ts.normalizePath(ts.combinePaths(nodeModulesFolder, moduleName));
          var result = loadNodeModuleFromFile(ts.supportedTypeScriptExtensions, candidate, failedLookupLocations, !nodeModulesFolderExists, host);
          if (result) {
            return {
              resolvedModule: {
                resolvedFileName: result,
                isExternalLibraryImport: true
              },
              failedLookupLocations: failedLookupLocations
            };
          }
          result = loadNodeModuleFromDirectory(ts.supportedTypeScriptExtensions, candidate, failedLookupLocations, !nodeModulesFolderExists, host);
          if (result) {
            return {
              resolvedModule: {
                resolvedFileName: result,
                isExternalLibraryImport: true
              },
              failedLookupLocations: failedLookupLocations
            };
          }
        }
        var parentPath = ts.getDirectoryPath(directory);
        if (parentPath === directory) {
          break;
        }
        directory = parentPath;
      }
      return {
        resolvedModule: undefined,
        failedLookupLocations: failedLookupLocations
      };
    }
    function nameStartsWithDotSlashOrDotDotSlash(name) {
      var i = name.lastIndexOf("./", 1);
      return i === 0 || (i === 1 && name.charCodeAt(0) === 46);
    }
    function classicNameResolver(moduleName, containingFile, compilerOptions, host) {
      if (moduleName.indexOf("!") != -1) {
        return {
          resolvedModule: undefined,
          failedLookupLocations: []
        };
      }
      var searchPath = ts.getDirectoryPath(containingFile);
      var searchName;
      var failedLookupLocations = [];
      var referencedSourceFile;
      var supportedExtensions = ts.getSupportedExtensions(compilerOptions);
      while (true) {
        searchName = ts.normalizePath(ts.combinePaths(searchPath, moduleName));
        referencedSourceFile = ts.forEach(supportedExtensions, function(extension) {
          if (extension === ".tsx" && !compilerOptions.jsx) {
            return undefined;
          }
          var candidate = searchName + extension;
          if (host.fileExists(candidate)) {
            return candidate;
          } else {
            failedLookupLocations.push(candidate);
          }
        });
        if (referencedSourceFile) {
          break;
        }
        var parentPath = ts.getDirectoryPath(searchPath);
        if (parentPath === searchPath) {
          break;
        }
        searchPath = parentPath;
      }
      return referencedSourceFile ? {
        resolvedModule: {resolvedFileName: referencedSourceFile},
        failedLookupLocations: failedLookupLocations
      } : {
        resolvedModule: undefined,
        failedLookupLocations: failedLookupLocations
      };
    }
    ts.classicNameResolver = classicNameResolver;
    ts.defaultInitCompilerOptions = {
      module: 1,
      target: 1,
      noImplicitAny: false,
      sourceMap: false
    };
    function createCompilerHost(options, setParentNodes) {
      var existingDirectories = {};
      function getCanonicalFileName(fileName) {
        return ts.sys.useCaseSensitiveFileNames ? fileName : fileName.toLowerCase();
      }
      var unsupportedFileEncodingErrorCode = -2147024809;
      function getSourceFile(fileName, languageVersion, onError) {
        var text;
        try {
          var start = new Date().getTime();
          text = ts.sys.readFile(fileName, options.charset);
          ts.ioReadTime += new Date().getTime() - start;
        } catch (e) {
          if (onError) {
            onError(e.number === unsupportedFileEncodingErrorCode ? ts.createCompilerDiagnostic(ts.Diagnostics.Unsupported_file_encoding).messageText : e.message);
          }
          text = "";
        }
        return text !== undefined ? ts.createSourceFile(fileName, text, languageVersion, setParentNodes) : undefined;
      }
      function directoryExists(directoryPath) {
        if (ts.hasProperty(existingDirectories, directoryPath)) {
          return true;
        }
        if (ts.sys.directoryExists(directoryPath)) {
          existingDirectories[directoryPath] = true;
          return true;
        }
        return false;
      }
      function ensureDirectoriesExist(directoryPath) {
        if (directoryPath.length > ts.getRootLength(directoryPath) && !directoryExists(directoryPath)) {
          var parentDirectory = ts.getDirectoryPath(directoryPath);
          ensureDirectoriesExist(parentDirectory);
          ts.sys.createDirectory(directoryPath);
        }
      }
      function writeFile(fileName, data, writeByteOrderMark, onError) {
        try {
          var start = new Date().getTime();
          ensureDirectoriesExist(ts.getDirectoryPath(ts.normalizePath(fileName)));
          ts.sys.writeFile(fileName, data, writeByteOrderMark);
          ts.ioWriteTime += new Date().getTime() - start;
        } catch (e) {
          if (onError) {
            onError(e.message);
          }
        }
      }
      var newLine = ts.getNewLineCharacter(options);
      return {
        getSourceFile: getSourceFile,
        getDefaultLibFileName: function(options) {
          return ts.combinePaths(ts.getDirectoryPath(ts.normalizePath(ts.sys.getExecutingFilePath())), ts.getDefaultLibFileName(options));
        },
        writeFile: writeFile,
        getCurrentDirectory: ts.memoize(function() {
          return ts.sys.getCurrentDirectory();
        }),
        useCaseSensitiveFileNames: function() {
          return ts.sys.useCaseSensitiveFileNames;
        },
        getCanonicalFileName: getCanonicalFileName,
        getNewLine: function() {
          return newLine;
        },
        fileExists: function(fileName) {
          return ts.sys.fileExists(fileName);
        },
        readFile: function(fileName) {
          return ts.sys.readFile(fileName);
        },
        directoryExists: function(directoryName) {
          return ts.sys.directoryExists(directoryName);
        }
      };
    }
    ts.createCompilerHost = createCompilerHost;
    function getPreEmitDiagnostics(program, sourceFile, cancellationToken) {
      var diagnostics = program.getOptionsDiagnostics(cancellationToken).concat(program.getSyntacticDiagnostics(sourceFile, cancellationToken), program.getGlobalDiagnostics(cancellationToken), program.getSemanticDiagnostics(sourceFile, cancellationToken));
      if (program.getCompilerOptions().declaration) {
        diagnostics = diagnostics.concat(program.getDeclarationDiagnostics(sourceFile, cancellationToken));
      }
      return ts.sortAndDeduplicateDiagnostics(diagnostics);
    }
    ts.getPreEmitDiagnostics = getPreEmitDiagnostics;
    function flattenDiagnosticMessageText(messageText, newLine) {
      if (typeof messageText === "string") {
        return messageText;
      } else {
        var diagnosticChain = messageText;
        var result = "";
        var indent = 0;
        while (diagnosticChain) {
          if (indent) {
            result += newLine;
            for (var i = 0; i < indent; i++) {
              result += "  ";
            }
          }
          result += diagnosticChain.messageText;
          indent++;
          diagnosticChain = diagnosticChain.next;
        }
        return result;
      }
    }
    ts.flattenDiagnosticMessageText = flattenDiagnosticMessageText;
    function createProgram(rootNames, options, host, oldProgram) {
      var program;
      var files = [];
      var fileProcessingDiagnostics = ts.createDiagnosticCollection();
      var programDiagnostics = ts.createDiagnosticCollection();
      var commonSourceDirectory;
      var diagnosticsProducingTypeChecker;
      var noDiagnosticsTypeChecker;
      var classifiableNames;
      var programSizeLimitExceeded = -1;
      var programSizeForNonTsFiles = 0;
      var skipDefaultLib = options.noLib;
      var supportedExtensions = ts.getSupportedExtensions(options);
      var start = new Date().getTime();
      host = host || createCompilerHost(options);
      var hasEmitBlockingDiagnostics = ts.createFileMap(getCanonicalFileName);
      var currentDirectory = host.getCurrentDirectory();
      var resolveModuleNamesWorker = host.resolveModuleNames ? (function(moduleNames, containingFile) {
        return host.resolveModuleNames(moduleNames, containingFile);
      }) : (function(moduleNames, containingFile) {
        var resolvedModuleNames = [];
        var lookup = {};
        for (var _i = 0,
            moduleNames_1 = moduleNames; _i < moduleNames_1.length; _i++) {
          var moduleName = moduleNames_1[_i];
          var resolvedName = void 0;
          if (ts.hasProperty(lookup, moduleName)) {
            resolvedName = lookup[moduleName];
          } else {
            resolvedName = resolveModuleName(moduleName, containingFile, options, host).resolvedModule;
            lookup[moduleName] = resolvedName;
          }
          resolvedModuleNames.push(resolvedName);
        }
        return resolvedModuleNames;
      });
      var filesByName = ts.createFileMap();
      var filesByNameIgnoreCase = host.useCaseSensitiveFileNames() ? ts.createFileMap(function(fileName) {
        return fileName.toLowerCase();
      }) : undefined;
      if (oldProgram) {
        var oldOptions = oldProgram.getCompilerOptions();
        if ((oldOptions.module !== options.module) || (oldOptions.noResolve !== options.noResolve) || (oldOptions.target !== options.target) || (oldOptions.noLib !== options.noLib) || (oldOptions.jsx !== options.jsx) || (oldOptions.allowJs !== options.allowJs) || (oldOptions.disableSizeLimit !== options.disableSizeLimit)) {
          oldProgram = undefined;
        }
      }
      if (!tryReuseStructureFromOldProgram()) {
        ts.forEach(rootNames, function(name) {
          return processRootFile(name, false);
        });
        if (!skipDefaultLib) {
          processRootFile(host.getDefaultLibFileName(options), true);
        }
      }
      oldProgram = undefined;
      program = {
        getRootFileNames: function() {
          return rootNames;
        },
        getSourceFile: getSourceFile,
        getSourceFiles: function() {
          return files;
        },
        getCompilerOptions: function() {
          return options;
        },
        getSyntacticDiagnostics: getSyntacticDiagnostics,
        getOptionsDiagnostics: getOptionsDiagnostics,
        getGlobalDiagnostics: getGlobalDiagnostics,
        getSemanticDiagnostics: getSemanticDiagnostics,
        getDeclarationDiagnostics: getDeclarationDiagnostics,
        getTypeChecker: getTypeChecker,
        getClassifiableNames: getClassifiableNames,
        getDiagnosticsProducingTypeChecker: getDiagnosticsProducingTypeChecker,
        getCommonSourceDirectory: getCommonSourceDirectory,
        emit: emit,
        getCurrentDirectory: function() {
          return currentDirectory;
        },
        getNodeCount: function() {
          return getDiagnosticsProducingTypeChecker().getNodeCount();
        },
        getIdentifierCount: function() {
          return getDiagnosticsProducingTypeChecker().getIdentifierCount();
        },
        getSymbolCount: function() {
          return getDiagnosticsProducingTypeChecker().getSymbolCount();
        },
        getTypeCount: function() {
          return getDiagnosticsProducingTypeChecker().getTypeCount();
        },
        getFileProcessingDiagnostics: function() {
          return fileProcessingDiagnostics;
        }
      };
      verifyCompilerOptions();
      ts.programTime += new Date().getTime() - start;
      return program;
      function exceedProgramSizeLimit() {
        return !options.disableSizeLimit && programSizeForNonTsFiles === programSizeLimitExceeded;
      }
      function getCommonSourceDirectory() {
        if (typeof commonSourceDirectory === "undefined") {
          if (options.rootDir && checkSourceFilesBelongToPath(files, options.rootDir)) {
            commonSourceDirectory = ts.getNormalizedAbsolutePath(options.rootDir, currentDirectory);
          } else {
            commonSourceDirectory = computeCommonSourceDirectory(files);
          }
          if (commonSourceDirectory && commonSourceDirectory[commonSourceDirectory.length - 1] !== ts.directorySeparator) {
            commonSourceDirectory += ts.directorySeparator;
          }
        }
        return commonSourceDirectory;
      }
      function getClassifiableNames() {
        if (!classifiableNames) {
          getTypeChecker();
          classifiableNames = {};
          for (var _i = 0,
              files_3 = files; _i < files_3.length; _i++) {
            var sourceFile = files_3[_i];
            ts.copyMap(sourceFile.classifiableNames, classifiableNames);
          }
        }
        return classifiableNames;
      }
      function tryReuseStructureFromOldProgram() {
        if (!oldProgram) {
          return false;
        }
        ts.Debug.assert(!oldProgram.structureIsReused);
        var oldRootNames = oldProgram.getRootFileNames();
        if (!ts.arrayIsEqualTo(oldRootNames, rootNames)) {
          return false;
        }
        var newSourceFiles = [];
        var filePaths = [];
        var modifiedSourceFiles = [];
        for (var _i = 0,
            _a = oldProgram.getSourceFiles(); _i < _a.length; _i++) {
          var oldSourceFile = _a[_i];
          var newSourceFile = host.getSourceFile(oldSourceFile.fileName, options.target);
          if (!newSourceFile) {
            return false;
          }
          newSourceFile.path = oldSourceFile.path;
          filePaths.push(newSourceFile.path);
          if (oldSourceFile !== newSourceFile) {
            if (oldSourceFile.hasNoDefaultLib !== newSourceFile.hasNoDefaultLib) {
              return false;
            }
            if (!ts.arrayIsEqualTo(oldSourceFile.referencedFiles, newSourceFile.referencedFiles, fileReferenceIsEqualTo)) {
              return false;
            }
            collectExternalModuleReferences(newSourceFile);
            if (!ts.arrayIsEqualTo(oldSourceFile.imports, newSourceFile.imports, moduleNameIsEqualTo)) {
              return false;
            }
            if (!ts.arrayIsEqualTo(oldSourceFile.moduleAugmentations, newSourceFile.moduleAugmentations, moduleNameIsEqualTo)) {
              return false;
            }
            if (resolveModuleNamesWorker) {
              var moduleNames = ts.map(ts.concatenate(newSourceFile.imports, newSourceFile.moduleAugmentations), getTextOfLiteral);
              var resolutions = resolveModuleNamesWorker(moduleNames, ts.getNormalizedAbsolutePath(newSourceFile.fileName, currentDirectory));
              for (var i = 0; i < moduleNames.length; i++) {
                var newResolution = resolutions[i];
                var oldResolution = ts.getResolvedModule(oldSourceFile, moduleNames[i]);
                var resolutionChanged = oldResolution ? !newResolution || oldResolution.resolvedFileName !== newResolution.resolvedFileName || !!oldResolution.isExternalLibraryImport !== !!newResolution.isExternalLibraryImport : newResolution;
                if (resolutionChanged) {
                  return false;
                }
              }
            }
            newSourceFile.resolvedModules = oldSourceFile.resolvedModules;
            modifiedSourceFiles.push(newSourceFile);
          } else {
            newSourceFile = oldSourceFile;
          }
          newSourceFiles.push(newSourceFile);
        }
        for (var i = 0,
            len = newSourceFiles.length; i < len; i++) {
          filesByName.set(filePaths[i], newSourceFiles[i]);
        }
        files = newSourceFiles;
        fileProcessingDiagnostics = oldProgram.getFileProcessingDiagnostics();
        for (var _b = 0,
            modifiedSourceFiles_1 = modifiedSourceFiles; _b < modifiedSourceFiles_1.length; _b++) {
          var modifiedFile = modifiedSourceFiles_1[_b];
          fileProcessingDiagnostics.reattachFileDiagnostics(modifiedFile);
        }
        oldProgram.structureIsReused = true;
        return true;
      }
      function getEmitHost(writeFileCallback) {
        return {
          getCanonicalFileName: getCanonicalFileName,
          getCommonSourceDirectory: program.getCommonSourceDirectory,
          getCompilerOptions: program.getCompilerOptions,
          getCurrentDirectory: function() {
            return currentDirectory;
          },
          getNewLine: function() {
            return host.getNewLine();
          },
          getSourceFile: program.getSourceFile,
          getSourceFiles: program.getSourceFiles,
          writeFile: writeFileCallback || (function(fileName, data, writeByteOrderMark, onError) {
            return host.writeFile(fileName, data, writeByteOrderMark, onError);
          }),
          isEmitBlocked: isEmitBlocked
        };
      }
      function getDiagnosticsProducingTypeChecker() {
        return diagnosticsProducingTypeChecker || (diagnosticsProducingTypeChecker = ts.createTypeChecker(program, true));
      }
      function getTypeChecker() {
        return noDiagnosticsTypeChecker || (noDiagnosticsTypeChecker = ts.createTypeChecker(program, false));
      }
      function emit(sourceFile, writeFileCallback, cancellationToken) {
        var _this = this;
        return runWithCancellationToken(function() {
          return emitWorker(_this, sourceFile, writeFileCallback, cancellationToken);
        });
      }
      function isEmitBlocked(emitFileName) {
        return hasEmitBlockingDiagnostics.contains(ts.toPath(emitFileName, currentDirectory, getCanonicalFileName));
      }
      function emitWorker(program, sourceFile, writeFileCallback, cancellationToken) {
        if (options.noEmitOnError) {
          var diagnostics = program.getOptionsDiagnostics(cancellationToken).concat(program.getSyntacticDiagnostics(sourceFile, cancellationToken), program.getGlobalDiagnostics(cancellationToken), program.getSemanticDiagnostics(sourceFile, cancellationToken));
          var declarationDiagnostics = [];
          if (diagnostics.length === 0 && program.getCompilerOptions().declaration) {
            declarationDiagnostics = program.getDeclarationDiagnostics(undefined, cancellationToken);
          }
          if (diagnostics.length > 0 || declarationDiagnostics.length > 0) {
            return {
              diagnostics: declarationDiagnostics,
              sourceMaps: undefined,
              emitSkipped: true
            };
          }
        }
        var emitResolver = getDiagnosticsProducingTypeChecker().getEmitResolver((options.outFile || options.out) ? undefined : sourceFile);
        var start = new Date().getTime();
        var emitResult = ts.emitFiles(emitResolver, getEmitHost(writeFileCallback), sourceFile);
        ts.emitTime += new Date().getTime() - start;
        return emitResult;
      }
      function getSourceFile(fileName) {
        return filesByName.get(ts.toPath(fileName, currentDirectory, getCanonicalFileName));
      }
      function getDiagnosticsHelper(sourceFile, getDiagnostics, cancellationToken) {
        if (sourceFile) {
          return getDiagnostics(sourceFile, cancellationToken);
        }
        var allDiagnostics = [];
        ts.forEach(program.getSourceFiles(), function(sourceFile) {
          if (cancellationToken) {
            cancellationToken.throwIfCancellationRequested();
          }
          ts.addRange(allDiagnostics, getDiagnostics(sourceFile, cancellationToken));
        });
        return ts.sortAndDeduplicateDiagnostics(allDiagnostics);
      }
      function getSyntacticDiagnostics(sourceFile, cancellationToken) {
        return getDiagnosticsHelper(sourceFile, getSyntacticDiagnosticsForFile, cancellationToken);
      }
      function getSemanticDiagnostics(sourceFile, cancellationToken) {
        return getDiagnosticsHelper(sourceFile, getSemanticDiagnosticsForFile, cancellationToken);
      }
      function getDeclarationDiagnostics(sourceFile, cancellationToken) {
        var options = program.getCompilerOptions();
        if (!sourceFile || options.out || options.outFile) {
          return getDeclarationDiagnosticsWorker(sourceFile, cancellationToken);
        } else {
          return getDiagnosticsHelper(sourceFile, getDeclarationDiagnosticsForFile, cancellationToken);
        }
      }
      function getSyntacticDiagnosticsForFile(sourceFile, cancellationToken) {
        return sourceFile.parseDiagnostics;
      }
      function runWithCancellationToken(func) {
        try {
          return func();
        } catch (e) {
          if (e instanceof ts.OperationCanceledException) {
            noDiagnosticsTypeChecker = undefined;
            diagnosticsProducingTypeChecker = undefined;
          }
          throw e;
        }
      }
      function getSemanticDiagnosticsForFile(sourceFile, cancellationToken) {
        return runWithCancellationToken(function() {
          var typeChecker = getDiagnosticsProducingTypeChecker();
          ts.Debug.assert(!!sourceFile.bindDiagnostics);
          var bindDiagnostics = sourceFile.bindDiagnostics;
          var checkDiagnostics = ts.isSourceFileJavaScript(sourceFile) ? getJavaScriptSemanticDiagnosticsForFile(sourceFile, cancellationToken) : typeChecker.getDiagnostics(sourceFile, cancellationToken);
          var fileProcessingDiagnosticsInFile = fileProcessingDiagnostics.getDiagnostics(sourceFile.fileName);
          var programDiagnosticsInFile = programDiagnostics.getDiagnostics(sourceFile.fileName);
          return bindDiagnostics.concat(checkDiagnostics).concat(fileProcessingDiagnosticsInFile).concat(programDiagnosticsInFile);
        });
      }
      function getJavaScriptSemanticDiagnosticsForFile(sourceFile, cancellationToken) {
        return runWithCancellationToken(function() {
          var diagnostics = [];
          walk(sourceFile);
          return diagnostics;
          function walk(node) {
            if (!node) {
              return false;
            }
            switch (node.kind) {
              case 224:
                diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.import_can_only_be_used_in_a_ts_file));
                return true;
              case 230:
                if (node.isExportEquals) {
                  diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.export_can_only_be_used_in_a_ts_file));
                  return true;
                }
                break;
              case 217:
                var classDeclaration = node;
                if (checkModifiers(classDeclaration.modifiers) || checkTypeParameters(classDeclaration.typeParameters)) {
                  return true;
                }
                break;
              case 246:
                var heritageClause = node;
                if (heritageClause.token === 106) {
                  diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.implements_clauses_can_only_be_used_in_a_ts_file));
                  return true;
                }
                break;
              case 218:
                diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.interface_declarations_can_only_be_used_in_a_ts_file));
                return true;
              case 221:
                diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.module_declarations_can_only_be_used_in_a_ts_file));
                return true;
              case 219:
                diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.type_aliases_can_only_be_used_in_a_ts_file));
                return true;
              case 144:
              case 143:
              case 145:
              case 146:
              case 147:
              case 176:
              case 216:
              case 177:
              case 216:
                var functionDeclaration = node;
                if (checkModifiers(functionDeclaration.modifiers) || checkTypeParameters(functionDeclaration.typeParameters) || checkTypeAnnotation(functionDeclaration.type)) {
                  return true;
                }
                break;
              case 196:
                var variableStatement = node;
                if (checkModifiers(variableStatement.modifiers)) {
                  return true;
                }
                break;
              case 214:
                var variableDeclaration = node;
                if (checkTypeAnnotation(variableDeclaration.type)) {
                  return true;
                }
                break;
              case 171:
              case 172:
                var expression = node;
                if (expression.typeArguments && expression.typeArguments.length > 0) {
                  var start_2 = expression.typeArguments.pos;
                  diagnostics.push(ts.createFileDiagnostic(sourceFile, start_2, expression.typeArguments.end - start_2, ts.Diagnostics.type_arguments_can_only_be_used_in_a_ts_file));
                  return true;
                }
                break;
              case 139:
                var parameter = node;
                if (parameter.modifiers) {
                  var start_3 = parameter.modifiers.pos;
                  diagnostics.push(ts.createFileDiagnostic(sourceFile, start_3, parameter.modifiers.end - start_3, ts.Diagnostics.parameter_modifiers_can_only_be_used_in_a_ts_file));
                  return true;
                }
                if (parameter.questionToken) {
                  diagnostics.push(ts.createDiagnosticForNode(parameter.questionToken, ts.Diagnostics._0_can_only_be_used_in_a_ts_file, "?"));
                  return true;
                }
                if (parameter.type) {
                  diagnostics.push(ts.createDiagnosticForNode(parameter.type, ts.Diagnostics.types_can_only_be_used_in_a_ts_file));
                  return true;
                }
                break;
              case 142:
                diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.property_declarations_can_only_be_used_in_a_ts_file));
                return true;
              case 220:
                diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.enum_declarations_can_only_be_used_in_a_ts_file));
                return true;
              case 174:
                var typeAssertionExpression = node;
                diagnostics.push(ts.createDiagnosticForNode(typeAssertionExpression.type, ts.Diagnostics.type_assertion_expressions_can_only_be_used_in_a_ts_file));
                return true;
              case 140:
                if (!options.experimentalDecorators) {
                  diagnostics.push(ts.createDiagnosticForNode(node, ts.Diagnostics.Experimental_support_for_decorators_is_a_feature_that_is_subject_to_change_in_a_future_release_Set_the_experimentalDecorators_option_to_remove_this_warning));
                }
                return true;
            }
            return ts.forEachChild(node, walk);
          }
          function checkTypeParameters(typeParameters) {
            if (typeParameters) {
              var start_4 = typeParameters.pos;
              diagnostics.push(ts.createFileDiagnostic(sourceFile, start_4, typeParameters.end - start_4, ts.Diagnostics.type_parameter_declarations_can_only_be_used_in_a_ts_file));
              return true;
            }
            return false;
          }
          function checkTypeAnnotation(type) {
            if (type) {
              diagnostics.push(ts.createDiagnosticForNode(type, ts.Diagnostics.types_can_only_be_used_in_a_ts_file));
              return true;
            }
            return false;
          }
          function checkModifiers(modifiers) {
            if (modifiers) {
              for (var _i = 0,
                  modifiers_1 = modifiers; _i < modifiers_1.length; _i++) {
                var modifier = modifiers_1[_i];
                switch (modifier.kind) {
                  case 112:
                  case 110:
                  case 111:
                  case 122:
                    diagnostics.push(ts.createDiagnosticForNode(modifier, ts.Diagnostics._0_can_only_be_used_in_a_ts_file, ts.tokenToString(modifier.kind)));
                    return true;
                  case 113:
                  case 82:
                  case 74:
                  case 77:
                  case 115:
                }
              }
            }
            return false;
          }
        });
      }
      function getDeclarationDiagnosticsWorker(sourceFile, cancellationToken) {
        return runWithCancellationToken(function() {
          var resolver = getDiagnosticsProducingTypeChecker().getEmitResolver(sourceFile, cancellationToken);
          var writeFile = function() {};
          return ts.getDeclarationDiagnostics(getEmitHost(writeFile), resolver, sourceFile);
        });
      }
      function getDeclarationDiagnosticsForFile(sourceFile, cancellationToken) {
        return ts.isDeclarationFile(sourceFile) ? [] : getDeclarationDiagnosticsWorker(sourceFile, cancellationToken);
      }
      function getOptionsDiagnostics() {
        var allDiagnostics = [];
        ts.addRange(allDiagnostics, fileProcessingDiagnostics.getGlobalDiagnostics());
        ts.addRange(allDiagnostics, programDiagnostics.getGlobalDiagnostics());
        return ts.sortAndDeduplicateDiagnostics(allDiagnostics);
      }
      function getGlobalDiagnostics() {
        var allDiagnostics = [];
        ts.addRange(allDiagnostics, getDiagnosticsProducingTypeChecker().getGlobalDiagnostics());
        return ts.sortAndDeduplicateDiagnostics(allDiagnostics);
      }
      function hasExtension(fileName) {
        return ts.getBaseFileName(fileName).indexOf(".") >= 0;
      }
      function processRootFile(fileName, isDefaultLib) {
        processSourceFile(ts.normalizePath(fileName), isDefaultLib);
      }
      function fileReferenceIsEqualTo(a, b) {
        return a.fileName === b.fileName;
      }
      function moduleNameIsEqualTo(a, b) {
        return a.text === b.text;
      }
      function getTextOfLiteral(literal) {
        return literal.text;
      }
      function collectExternalModuleReferences(file) {
        if (file.imports) {
          return;
        }
        var isJavaScriptFile = ts.isSourceFileJavaScript(file);
        var isExternalModuleFile = ts.isExternalModule(file);
        var imports;
        var moduleAugmentations;
        for (var _i = 0,
            _a = file.statements; _i < _a.length; _i++) {
          var node = _a[_i];
          collectModuleReferences(node, false);
          if (isJavaScriptFile) {
            collectRequireCalls(node);
          }
        }
        file.imports = imports || emptyArray;
        file.moduleAugmentations = moduleAugmentations || emptyArray;
        return;
        function collectModuleReferences(node, inAmbientModule) {
          switch (node.kind) {
            case 225:
            case 224:
            case 231:
              var moduleNameExpr = ts.getExternalModuleName(node);
              if (!moduleNameExpr || moduleNameExpr.kind !== 9) {
                break;
              }
              if (!moduleNameExpr.text) {
                break;
              }
              if (!inAmbientModule || !ts.isExternalModuleNameRelative(moduleNameExpr.text)) {
                (imports || (imports = [])).push(moduleNameExpr);
              }
              break;
            case 221:
              if (ts.isAmbientModule(node) && (inAmbientModule || node.flags & 4 || ts.isDeclarationFile(file))) {
                var moduleName = node.name;
                if (isExternalModuleFile || (inAmbientModule && !ts.isExternalModuleNameRelative(moduleName.text))) {
                  (moduleAugmentations || (moduleAugmentations = [])).push(moduleName);
                } else if (!inAmbientModule) {
                  for (var _i = 0,
                      _a = node.body.statements; _i < _a.length; _i++) {
                    var statement = _a[_i];
                    collectModuleReferences(statement, true);
                  }
                }
              }
          }
        }
        function collectRequireCalls(node) {
          if (ts.isRequireCall(node, true)) {
            (imports || (imports = [])).push(node.arguments[0]);
          } else {
            ts.forEachChild(node, collectRequireCalls);
          }
        }
      }
      function processSourceFile(fileName, isDefaultLib, refFile, refPos, refEnd) {
        var diagnosticArgument;
        var diagnostic;
        if (hasExtension(fileName)) {
          if (!options.allowNonTsExtensions && !ts.forEach(supportedExtensions, function(extension) {
            return ts.fileExtensionIs(host.getCanonicalFileName(fileName), extension);
          })) {
            diagnostic = ts.Diagnostics.File_0_has_unsupported_extension_The_only_supported_extensions_are_1;
            diagnosticArgument = [fileName, "'" + supportedExtensions.join("', '") + "'"];
          } else if (!findSourceFile(fileName, ts.toPath(fileName, currentDirectory, getCanonicalFileName), isDefaultLib, refFile, refPos, refEnd)) {
            diagnostic = ts.Diagnostics.File_0_not_found;
            diagnosticArgument = [fileName];
          } else if (refFile && host.getCanonicalFileName(fileName) === host.getCanonicalFileName(refFile.fileName)) {
            diagnostic = ts.Diagnostics.A_file_cannot_have_a_reference_to_itself;
            diagnosticArgument = [fileName];
          }
        } else {
          var nonTsFile = options.allowNonTsExtensions && findSourceFile(fileName, ts.toPath(fileName, currentDirectory, getCanonicalFileName), isDefaultLib, refFile, refPos, refEnd);
          if (!nonTsFile) {
            if (options.allowNonTsExtensions) {
              diagnostic = ts.Diagnostics.File_0_not_found;
              diagnosticArgument = [fileName];
            } else if (!ts.forEach(supportedExtensions, function(extension) {
              return findSourceFile(fileName + extension, ts.toPath(fileName + extension, currentDirectory, getCanonicalFileName), isDefaultLib, refFile, refPos, refEnd);
            })) {
              diagnostic = ts.Diagnostics.File_0_not_found;
              fileName += ".ts";
              diagnosticArgument = [fileName];
            }
          }
        }
        if (diagnostic && !exceedProgramSizeLimit()) {
          if (refFile !== undefined && refEnd !== undefined && refPos !== undefined) {
            fileProcessingDiagnostics.add(ts.createFileDiagnostic.apply(void 0, [refFile, refPos, refEnd - refPos, diagnostic].concat(diagnosticArgument)));
          } else {
            fileProcessingDiagnostics.add(ts.createCompilerDiagnostic.apply(void 0, [diagnostic].concat(diagnosticArgument)));
          }
        }
      }
      function reportFileNamesDifferOnlyInCasingError(fileName, existingFileName, refFile, refPos, refEnd) {
        if (refFile !== undefined && refPos !== undefined && refEnd !== undefined) {
          fileProcessingDiagnostics.add(ts.createFileDiagnostic(refFile, refPos, refEnd - refPos, ts.Diagnostics.File_name_0_differs_from_already_included_file_name_1_only_in_casing, fileName, existingFileName));
        } else {
          fileProcessingDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.File_name_0_differs_from_already_included_file_name_1_only_in_casing, fileName, existingFileName));
        }
      }
      function findSourceFile(fileName, path, isDefaultLib, refFile, refPos, refEnd) {
        if (filesByName.contains(path)) {
          var file_1 = filesByName.get(path);
          if (file_1 && options.forceConsistentCasingInFileNames && ts.getNormalizedAbsolutePath(file_1.fileName, currentDirectory) !== ts.getNormalizedAbsolutePath(fileName, currentDirectory)) {
            reportFileNamesDifferOnlyInCasingError(fileName, file_1.fileName, refFile, refPos, refEnd);
          }
          return file_1;
        }
        var isNonTsFile = !ts.hasTypeScriptFileExtension(fileName);
        if (isNonTsFile && exceedProgramSizeLimit()) {
          return undefined;
        }
        var file = host.getSourceFile(fileName, options.target, function(hostErrorMessage) {
          if (refFile !== undefined && refPos !== undefined && refEnd !== undefined) {
            fileProcessingDiagnostics.add(ts.createFileDiagnostic(refFile, refPos, refEnd - refPos, ts.Diagnostics.Cannot_read_file_0_Colon_1, fileName, hostErrorMessage));
          } else {
            fileProcessingDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Cannot_read_file_0_Colon_1, fileName, hostErrorMessage));
          }
        });
        if (isNonTsFile && !options.disableSizeLimit && file && file.text) {
          programSizeForNonTsFiles += file.text.length;
          if (programSizeForNonTsFiles > ts.maxProgramSizeForNonTsFiles) {
            var commonSourceDirectory_1 = getCommonSourceDirectory();
            var rootLevelDirectory = path.substring(0, Math.max(commonSourceDirectory_1.length, path.indexOf(ts.directorySeparator, commonSourceDirectory_1.length)));
            if (rootLevelDirectory[rootLevelDirectory.length - 1] !== ts.directorySeparator) {
              rootLevelDirectory += ts.directorySeparator;
            }
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Too_many_JavaScript_files_in_the_project_Consider_specifying_the_exclude_setting_in_project_configuration_to_limit_included_source_folders_The_likely_folder_to_exclude_is_0_To_disable_the_project_size_limit_set_the_disableSizeLimit_compiler_option_to_true, rootLevelDirectory));
            programSizeForNonTsFiles = programSizeLimitExceeded;
            return undefined;
          }
        }
        filesByName.set(path, file);
        if (file) {
          file.path = path;
          if (host.useCaseSensitiveFileNames()) {
            var existingFile = filesByNameIgnoreCase.get(path);
            if (existingFile) {
              reportFileNamesDifferOnlyInCasingError(fileName, existingFile.fileName, refFile, refPos, refEnd);
            } else {
              filesByNameIgnoreCase.set(path, file);
            }
          }
          skipDefaultLib = skipDefaultLib || file.hasNoDefaultLib;
          var basePath = ts.getDirectoryPath(fileName);
          if (!options.noResolve) {
            processReferencedFiles(file, basePath);
          }
          processImportedModules(file, basePath);
          if (isDefaultLib) {
            files.unshift(file);
          } else {
            files.push(file);
          }
        }
        return file;
      }
      function processReferencedFiles(file, basePath) {
        ts.forEach(file.referencedFiles, function(ref) {
          var referencedFileName = resolveTripleslashReference(ref.fileName, file.fileName);
          processSourceFile(referencedFileName, false, file, ref.pos, ref.end);
        });
      }
      function getCanonicalFileName(fileName) {
        return host.getCanonicalFileName(fileName);
      }
      function processImportedModules(file, basePath) {
        collectExternalModuleReferences(file);
        if (file.imports.length || file.moduleAugmentations.length) {
          file.resolvedModules = {};
          var moduleNames = ts.map(ts.concatenate(file.imports, file.moduleAugmentations), getTextOfLiteral);
          var resolutions = resolveModuleNamesWorker(moduleNames, ts.getNormalizedAbsolutePath(file.fileName, currentDirectory));
          for (var i = 0; i < moduleNames.length; i++) {
            var resolution = resolutions[i];
            ts.setResolvedModule(file, moduleNames[i], resolution);
            var shouldAddFile = resolution && !options.noResolve && i < file.imports.length;
            if (shouldAddFile) {
              var importedFile = findSourceFile(resolution.resolvedFileName, ts.toPath(resolution.resolvedFileName, currentDirectory, getCanonicalFileName), false, file, ts.skipTrivia(file.text, file.imports[i].pos), file.imports[i].end);
              if (importedFile && resolution.isExternalLibraryImport) {
                if (!ts.isExternalModule(importedFile) && importedFile.statements.length) {
                  var start_5 = ts.getTokenPosOfNode(file.imports[i], file);
                  fileProcessingDiagnostics.add(ts.createFileDiagnostic(file, start_5, file.imports[i].end - start_5, ts.Diagnostics.Exported_external_package_typings_file_0_is_not_a_module_Please_contact_the_package_author_to_update_the_package_definition, importedFile.fileName));
                } else if (importedFile.referencedFiles.length) {
                  var firstRef = importedFile.referencedFiles[0];
                  fileProcessingDiagnostics.add(ts.createFileDiagnostic(importedFile, firstRef.pos, firstRef.end - firstRef.pos, ts.Diagnostics.Exported_external_package_typings_file_cannot_contain_tripleslash_references_Please_contact_the_package_author_to_update_the_package_definition));
                }
              }
            }
          }
        } else {
          file.resolvedModules = undefined;
        }
        return;
      }
      function computeCommonSourceDirectory(sourceFiles) {
        var commonPathComponents;
        var failed = ts.forEach(files, function(sourceFile) {
          if (ts.isDeclarationFile(sourceFile)) {
            return;
          }
          var sourcePathComponents = ts.getNormalizedPathComponents(sourceFile.fileName, currentDirectory);
          sourcePathComponents.pop();
          if (!commonPathComponents) {
            commonPathComponents = sourcePathComponents;
            return;
          }
          for (var i = 0,
              n = Math.min(commonPathComponents.length, sourcePathComponents.length); i < n; i++) {
            if (getCanonicalFileName(commonPathComponents[i]) !== getCanonicalFileName(sourcePathComponents[i])) {
              if (i === 0) {
                return true;
              }
              commonPathComponents.length = i;
              break;
            }
          }
          if (sourcePathComponents.length < commonPathComponents.length) {
            commonPathComponents.length = sourcePathComponents.length;
          }
        });
        if (failed) {
          return "";
        }
        if (!commonPathComponents) {
          return currentDirectory;
        }
        return ts.getNormalizedPathFromPathComponents(commonPathComponents);
      }
      function checkSourceFilesBelongToPath(sourceFiles, rootDirectory) {
        var allFilesBelongToPath = true;
        if (sourceFiles) {
          var absoluteRootDirectoryPath = host.getCanonicalFileName(ts.getNormalizedAbsolutePath(rootDirectory, currentDirectory));
          for (var _i = 0,
              sourceFiles_2 = sourceFiles; _i < sourceFiles_2.length; _i++) {
            var sourceFile = sourceFiles_2[_i];
            if (!ts.isDeclarationFile(sourceFile)) {
              var absoluteSourceFilePath = host.getCanonicalFileName(ts.getNormalizedAbsolutePath(sourceFile.fileName, currentDirectory));
              if (absoluteSourceFilePath.indexOf(absoluteRootDirectoryPath) !== 0) {
                programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files, sourceFile.fileName, options.rootDir));
                allFilesBelongToPath = false;
              }
            }
          }
        }
        return allFilesBelongToPath;
      }
      function verifyCompilerOptions() {
        if (options.isolatedModules) {
          if (options.declaration) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "declaration", "isolatedModules"));
          }
          if (options.noEmitOnError) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "noEmitOnError", "isolatedModules"));
          }
          if (options.out) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "out", "isolatedModules"));
          }
          if (options.outFile) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "outFile", "isolatedModules"));
          }
        }
        if (options.inlineSourceMap) {
          if (options.sourceMap) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "sourceMap", "inlineSourceMap"));
          }
          if (options.mapRoot) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "mapRoot", "inlineSourceMap"));
          }
        }
        if (options.inlineSources) {
          if (!options.sourceMap && !options.inlineSourceMap) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_inlineSources_can_only_be_used_when_either_option_inlineSourceMap_or_option_sourceMap_is_provided));
          }
          if (options.sourceRoot) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "sourceRoot", "inlineSources"));
          }
        }
        if (options.out && options.outFile) {
          programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "out", "outFile"));
        }
        if (!options.sourceMap && (options.mapRoot || options.sourceRoot)) {
          if (options.mapRoot) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1, "mapRoot", "sourceMap"));
          }
          if (options.sourceRoot && !options.inlineSourceMap) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1, "sourceRoot", "sourceMap"));
          }
        }
        var languageVersion = options.target || 0;
        var outFile = options.outFile || options.out;
        var firstExternalModuleSourceFile = ts.forEach(files, function(f) {
          return ts.isExternalModule(f) ? f : undefined;
        });
        if (options.isolatedModules) {
          if (options.module === 0 && languageVersion < 2) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_isolatedModules_can_only_be_used_when_either_option_module_is_provided_or_option_target_is_ES2015_or_higher));
          }
          var firstNonExternalModuleSourceFile = ts.forEach(files, function(f) {
            return !ts.isExternalModule(f) && !ts.isDeclarationFile(f) ? f : undefined;
          });
          if (firstNonExternalModuleSourceFile) {
            var span = ts.getErrorSpanForNode(firstNonExternalModuleSourceFile, firstNonExternalModuleSourceFile);
            programDiagnostics.add(ts.createFileDiagnostic(firstNonExternalModuleSourceFile, span.start, span.length, ts.Diagnostics.Cannot_compile_namespaces_when_the_isolatedModules_flag_is_provided));
          }
        } else if (firstExternalModuleSourceFile && languageVersion < 2 && options.module === 0) {
          var span = ts.getErrorSpanForNode(firstExternalModuleSourceFile, firstExternalModuleSourceFile.externalModuleIndicator);
          programDiagnostics.add(ts.createFileDiagnostic(firstExternalModuleSourceFile, span.start, span.length, ts.Diagnostics.Cannot_compile_modules_unless_the_module_flag_is_provided_with_a_valid_module_type_Consider_setting_the_module_compiler_option_in_a_tsconfig_json_file));
        }
        if (options.module === 5 && languageVersion < 2) {
          programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Cannot_compile_modules_into_es2015_when_targeting_ES5_or_lower));
        }
        if (outFile && options.module && !(options.module === 2 || options.module === 4)) {
          programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Only_amd_and_system_modules_are_supported_alongside_0, options.out ? "out" : "outFile"));
        }
        if (options.outDir || options.sourceRoot || options.mapRoot) {
          var dir = getCommonSourceDirectory();
          if (options.outDir && dir === "" && ts.forEach(files, function(file) {
            return ts.getRootLength(file.fileName) > 1;
          })) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Cannot_find_the_common_subdirectory_path_for_the_input_files));
          }
        }
        if (options.noEmit) {
          if (options.out) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "noEmit", "out"));
          }
          if (options.outFile) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "noEmit", "outFile"));
          }
          if (options.outDir) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "noEmit", "outDir"));
          }
          if (options.declaration) {
            programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "noEmit", "declaration"));
          }
        } else if (options.allowJs && options.declaration) {
          programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "allowJs", "declaration"));
        }
        if (options.emitDecoratorMetadata && !options.experimentalDecorators) {
          programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1, "emitDecoratorMetadata", "experimentalDecorators"));
        }
        if (options.reactNamespace && !ts.isIdentifier(options.reactNamespace, languageVersion)) {
          programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Invalide_value_for_reactNamespace_0_is_not_a_valid_identifier, options.reactNamespace));
        }
        if (!options.noEmit && !options.suppressOutputPathCheck) {
          var emitHost = getEmitHost();
          var emitFilesSeen_1 = ts.createFileMap(!host.useCaseSensitiveFileNames() ? function(key) {
            return key.toLocaleLowerCase();
          } : undefined);
          ts.forEachExpectedEmitFile(emitHost, function(emitFileNames, sourceFiles, isBundledEmit) {
            verifyEmitFilePath(emitFileNames.jsFilePath, emitFilesSeen_1);
            verifyEmitFilePath(emitFileNames.declarationFilePath, emitFilesSeen_1);
          });
        }
        function verifyEmitFilePath(emitFileName, emitFilesSeen) {
          if (emitFileName) {
            var emitFilePath = ts.toPath(emitFileName, currentDirectory, getCanonicalFileName);
            if (filesByName.contains(emitFilePath)) {
              createEmitBlockingDiagnostics(emitFileName, emitFilePath, ts.Diagnostics.Cannot_write_file_0_because_it_would_overwrite_input_file);
            }
            if (emitFilesSeen.contains(emitFilePath)) {
              createEmitBlockingDiagnostics(emitFileName, emitFilePath, ts.Diagnostics.Cannot_write_file_0_because_it_would_be_overwritten_by_multiple_input_files);
            } else {
              emitFilesSeen.set(emitFilePath, true);
            }
          }
        }
      }
      function createEmitBlockingDiagnostics(emitFileName, emitFilePath, message) {
        hasEmitBlockingDiagnostics.set(ts.toPath(emitFileName, currentDirectory, getCanonicalFileName), true);
        programDiagnostics.add(ts.createCompilerDiagnostic(message, emitFileName));
      }
    }
    ts.createProgram = createProgram;
  })(ts || (ts = {}));
  var ts;
  (function(ts) {
    ts.optionDeclarations = [{
      name: "charset",
      type: "string"
    }, {
      name: "declaration",
      shortName: "d",
      type: "boolean",
      description: ts.Diagnostics.Generates_corresponding_d_ts_file
    }, {
      name: "diagnostics",
      type: "boolean"
    }, {
      name: "emitBOM",
      type: "boolean"
    }, {
      name: "help",
      shortName: "h",
      type: "boolean",
      description: ts.Diagnostics.Print_this_message
    }, {
      name: "init",
      type: "boolean",
      description: ts.Diagnostics.Initializes_a_TypeScript_project_and_creates_a_tsconfig_json_file
    }, {
      name: "inlineSourceMap",
      type: "boolean"
    }, {
      name: "inlineSources",
      type: "boolean"
    }, {
      name: "jsx",
      type: {
        "preserve": 1,
        "react": 2
      },
      paramType: ts.Diagnostics.KIND,
      description: ts.Diagnostics.Specify_JSX_code_generation_Colon_preserve_or_react,
      error: ts.Diagnostics.Argument_for_jsx_must_be_preserve_or_react
    }, {
      name: "reactNamespace",
      type: "string",
      description: ts.Diagnostics.Specifies_the_object_invoked_for_createElement_and_spread_when_targeting_react_JSX_emit
    }, {
      name: "listFiles",
      type: "boolean"
    }, {
      name: "locale",
      type: "string"
    }, {
      name: "mapRoot",
      type: "string",
      isFilePath: true,
      description: ts.Diagnostics.Specifies_the_location_where_debugger_should_locate_map_files_instead_of_generated_locations,
      paramType: ts.Diagnostics.LOCATION
    }, {
      name: "module",
      shortName: "m",
      type: {
        "none": 0,
        "commonjs": 1,
        "amd": 2,
        "system": 4,
        "umd": 3,
        "es6": 5,
        "es2015": 5
      },
      description: ts.Diagnostics.Specify_module_code_generation_Colon_commonjs_amd_system_umd_or_es2015,
      paramType: ts.Diagnostics.KIND,
      error: ts.Diagnostics.Argument_for_module_option_must_be_commonjs_amd_system_umd_es2015_or_none
    }, {
      name: "newLine",
      type: {
        "crlf": 0,
        "lf": 1
      },
      description: ts.Diagnostics.Specifies_the_end_of_line_sequence_to_be_used_when_emitting_files_Colon_CRLF_dos_or_LF_unix,
      paramType: ts.Diagnostics.NEWLINE,
      error: ts.Diagnostics.Argument_for_newLine_option_must_be_CRLF_or_LF
    }, {
      name: "noEmit",
      type: "boolean",
      description: ts.Diagnostics.Do_not_emit_outputs
    }, {
      name: "noEmitHelpers",
      type: "boolean"
    }, {
      name: "noEmitOnError",
      type: "boolean",
      description: ts.Diagnostics.Do_not_emit_outputs_if_any_errors_were_reported
    }, {
      name: "noImplicitAny",
      type: "boolean",
      description: ts.Diagnostics.Raise_error_on_expressions_and_declarations_with_an_implied_any_type
    }, {
      name: "noLib",
      type: "boolean"
    }, {
      name: "noResolve",
      type: "boolean"
    }, {
      name: "skipDefaultLibCheck",
      type: "boolean"
    }, {
      name: "out",
      type: "string",
      isFilePath: false,
      paramType: ts.Diagnostics.FILE
    }, {
      name: "outFile",
      type: "string",
      isFilePath: true,
      description: ts.Diagnostics.Concatenate_and_emit_output_to_single_file,
      paramType: ts.Diagnostics.FILE
    }, {
      name: "outDir",
      type: "string",
      isFilePath: true,
      description: ts.Diagnostics.Redirect_output_structure_to_the_directory,
      paramType: ts.Diagnostics.DIRECTORY
    }, {
      name: "preserveConstEnums",
      type: "boolean",
      description: ts.Diagnostics.Do_not_erase_const_enum_declarations_in_generated_code
    }, {
      name: "pretty",
      paramType: ts.Diagnostics.KIND,
      description: ts.Diagnostics.Stylize_errors_and_messages_using_color_and_context_experimental,
      type: "boolean"
    }, {
      name: "project",
      shortName: "p",
      type: "string",
      isFilePath: true,
      description: ts.Diagnostics.Compile_the_project_in_the_given_directory,
      paramType: ts.Diagnostics.DIRECTORY
    }, {
      name: "removeComments",
      type: "boolean",
      description: ts.Diagnostics.Do_not_emit_comments_to_output
    }, {
      name: "rootDir",
      type: "string",
      isFilePath: true,
      description: ts.Diagnostics.Specifies_the_root_directory_of_input_files_Use_to_control_the_output_directory_structure_with_outDir,
      paramType: ts.Diagnostics.LOCATION
    }, {
      name: "isolatedModules",
      type: "boolean"
    }, {
      name: "sourceMap",
      type: "boolean",
      description: ts.Diagnostics.Generates_corresponding_map_file
    }, {
      name: "sourceRoot",
      type: "string",
      isFilePath: true,
      description: ts.Diagnostics.Specifies_the_location_where_debugger_should_locate_TypeScript_files_instead_of_source_locations,
      paramType: ts.Diagnostics.LOCATION
    }, {
      name: "suppressExcessPropertyErrors",
      type: "boolean",
      description: ts.Diagnostics.Suppress_excess_property_checks_for_object_literals,
      experimental: true
    }, {
      name: "suppressImplicitAnyIndexErrors",
      type: "boolean",
      description: ts.Diagnostics.Suppress_noImplicitAny_errors_for_indexing_objects_lacking_index_signatures
    }, {
      name: "stripInternal",
      type: "boolean",
      description: ts.Diagnostics.Do_not_emit_declarations_for_code_that_has_an_internal_annotation,
      experimental: true
    }, {
      name: "target",
      shortName: "t",
      type: {
        "es3": 0,
        "es5": 1,
        "es6": 2,
        "es2015": 2
      },
      description: ts.Diagnostics.Specify_ECMAScript_target_version_Colon_ES3_default_ES5_or_ES2015_experimental,
      paramType: ts.Diagnostics.VERSION,
      error: ts.Diagnostics.Argument_for_target_option_must_be_ES3_ES5_or_ES2015
    }, {
      name: "version",
      shortName: "v",
      type: "boolean",
      description: ts.Diagnostics.Print_the_compiler_s_version
    }, {
      name: "watch",
      shortName: "w",
      type: "boolean",
      description: ts.Diagnostics.Watch_input_files
    }, {
      name: "experimentalDecorators",
      type: "boolean",
      description: ts.Diagnostics.Enables_experimental_support_for_ES7_decorators
    }, {
      name: "emitDecoratorMetadata",
      type: "boolean",
      experimental: true,
      description: ts.Diagnostics.Enables_experimental_support_for_emitting_type_metadata_for_decorators
    }, {
      name: "moduleResolution",
      type: {
        "node": 2,
        "classic": 1
      },
      description: ts.Diagnostics.Specifies_module_resolution_strategy_Colon_node_Node_js_or_classic_TypeScript_pre_1_6,
      error: ts.Diagnostics.Argument_for_moduleResolution_option_must_be_node_or_classic
    }, {
      name: "allowUnusedLabels",
      type: "boolean",
      description: ts.Diagnostics.Do_not_report_errors_on_unused_labels
    }, {
      name: "noImplicitReturns",
      type: "boolean",
      description: ts.Diagnostics.Report_error_when_not_all_code_paths_in_function_return_a_value
    }, {
      name: "noFallthroughCasesInSwitch",
      type: "boolean",
      description: ts.Diagnostics.Report_errors_for_fallthrough_cases_in_switch_statement
    }, {
      name: "allowUnreachableCode",
      type: "boolean",
      description: ts.Diagnostics.Do_not_report_errors_on_unreachable_code
    }, {
      name: "forceConsistentCasingInFileNames",
      type: "boolean",
      description: ts.Diagnostics.Disallow_inconsistently_cased_references_to_the_same_file
    }, {
      name: "allowSyntheticDefaultImports",
      type: "boolean",
      description: ts.Diagnostics.Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typechecking
    }, {
      name: "allowJs",
      type: "boolean",
      description: ts.Diagnostics.Allow_javascript_files_to_be_compiled
    }, {
      name: "noImplicitUseStrict",
      type: "boolean",
      description: ts.Diagnostics.Do_not_emit_use_strict_directives_in_module_output
    }, {
      name: "noCustomAsyncPromise",
      type: "boolean",
      experimental: true
    }, {
      name: "disableSizeLimit",
      type: "boolean"
    }];
    var optionNameMapCache;
    function getOptionNameMap() {
      if (optionNameMapCache) {
        return optionNameMapCache;
      }
      var optionNameMap = {};
      var shortOptionNames = {};
      ts.forEach(ts.optionDeclarations, function(option) {
        optionNameMap[option.name.toLowerCase()] = option;
        if (option.shortName) {
          shortOptionNames[option.shortName] = option.name;
        }
      });
      optionNameMapCache = {
        optionNameMap: optionNameMap,
        shortOptionNames: shortOptionNames
      };
      return optionNameMapCache;
    }
    ts.getOptionNameMap = getOptionNameMap;
    function parseCommandLine(commandLine, readFile) {
      var options = {};
      var fileNames = [];
      var errors = [];
      var _a = getOptionNameMap(),
          optionNameMap = _a.optionNameMap,
          shortOptionNames = _a.shortOptionNames;
      parseStrings(commandLine);
      return {
        options: options,
        fileNames: fileNames,
        errors: errors
      };
      function parseStrings(args) {
        var i = 0;
        while (i < args.length) {
          var s = args[i];
          i++;
          if (s.charCodeAt(0) === 64) {
            parseResponseFile(s.slice(1));
          } else if (s.charCodeAt(0) === 45) {
            s = s.slice(s.charCodeAt(1) === 45 ? 2 : 1).toLowerCase();
            if (ts.hasProperty(shortOptionNames, s)) {
              s = shortOptionNames[s];
            }
            if (ts.hasProperty(optionNameMap, s)) {
              var opt = optionNameMap[s];
              if (!args[i] && opt.type !== "boolean") {
                errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Compiler_option_0_expects_an_argument, opt.name));
              }
              switch (opt.type) {
                case "number":
                  options[opt.name] = parseInt(args[i]);
                  i++;
                  break;
                case "boolean":
                  options[opt.name] = true;
                  break;
                case "string":
                  options[opt.name] = args[i] || "";
                  i++;
                  break;
                default:
                  var map_1 = opt.type;
                  var key = (args[i] || "").toLowerCase();
                  i++;
                  if (ts.hasProperty(map_1, key)) {
                    options[opt.name] = map_1[key];
                  } else {
                    errors.push(ts.createCompilerDiagnostic(opt.error));
                  }
              }
            } else {
              errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Unknown_compiler_option_0, s));
            }
          } else {
            fileNames.push(s);
          }
        }
      }
      function parseResponseFile(fileName) {
        var text = readFile ? readFile(fileName) : ts.sys.readFile(fileName);
        if (!text) {
          errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.File_0_not_found, fileName));
          return;
        }
        var args = [];
        var pos = 0;
        while (true) {
          while (pos < text.length && text.charCodeAt(pos) <= 32)
            pos++;
          if (pos >= text.length)
            break;
          var start = pos;
          if (text.charCodeAt(start) === 34) {
            pos++;
            while (pos < text.length && text.charCodeAt(pos) !== 34)
              pos++;
            if (pos < text.length) {
              args.push(text.substring(start + 1, pos));
              pos++;
            } else {
              errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Unterminated_quoted_string_in_response_file_0, fileName));
            }
          } else {
            while (text.charCodeAt(pos) > 32)
              pos++;
            args.push(text.substring(start, pos));
          }
        }
        parseStrings(args);
      }
    }
    ts.parseCommandLine = parseCommandLine;
    function readConfigFile(fileName, readFile) {
      var text = "";
      try {
        text = readFile(fileName);
      } catch (e) {
        return {error: ts.createCompilerDiagnostic(ts.Diagnostics.Cannot_read_file_0_Colon_1, fileName, e.message)};
      }
      return parseConfigFileTextToJson(fileName, text);
    }
    ts.readConfigFile = readConfigFile;
    function parseConfigFileTextToJson(fileName, jsonText) {
      try {
        var jsonTextWithoutComments = removeComments(jsonText);
        return {config: /\S/.test(jsonTextWithoutComments) ? JSON.parse(jsonTextWithoutComments) : {}};
      } catch (e) {
        return {error: ts.createCompilerDiagnostic(ts.Diagnostics.Failed_to_parse_file_0_Colon_1, fileName, e.message)};
      }
    }
    ts.parseConfigFileTextToJson = parseConfigFileTextToJson;
    function removeComments(jsonText) {
      var output = "";
      var scanner = ts.createScanner(1, false, 0, jsonText);
      var token;
      while ((token = scanner.scan()) !== 1) {
        switch (token) {
          case 2:
          case 3:
            output += scanner.getTokenText().replace(/\S/g, " ");
            break;
          default:
            output += scanner.getTokenText();
            break;
        }
      }
      return output;
    }
    function parseJsonConfigFileContent(json, host, basePath, existingOptions, configFileName) {
      if (existingOptions === void 0) {
        existingOptions = {};
      }
      var _a = convertCompilerOptionsFromJson(json["compilerOptions"], basePath, configFileName),
          optionsFromJsonConfigFile = _a.options,
          errors = _a.errors;
      var options = ts.extend(existingOptions, optionsFromJsonConfigFile);
      return {
        options: options,
        fileNames: getFileNames(),
        typingOptions: getTypingOptions(),
        errors: errors
      };
      function getFileNames() {
        var fileNames = [];
        if (ts.hasProperty(json, "files")) {
          if (json["files"] instanceof Array) {
            fileNames = ts.map(json["files"], function(s) {
              return ts.combinePaths(basePath, s);
            });
          } else {
            errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Compiler_option_0_requires_a_value_of_type_1, "files", "Array"));
          }
        } else {
          var filesSeen = {};
          var exclude = [];
          if (json["exclude"] instanceof Array) {
            exclude = json["exclude"];
          } else {
            exclude = ["node_modules", "bower_components"];
            var outDir = json["compilerOptions"] && json["compilerOptions"]["outDir"];
            if (outDir) {
              exclude.push(outDir);
            }
          }
          exclude = ts.map(exclude, ts.normalizeSlashes);
          var supportedExtensions = ts.getSupportedExtensions(options);
          ts.Debug.assert(ts.indexOf(supportedExtensions, ".ts") < ts.indexOf(supportedExtensions, ".d.ts"), "Changed priority of extensions to pick");
          for (var _i = 0,
              supportedExtensions_1 = supportedExtensions; _i < supportedExtensions_1.length; _i++) {
            var extension = supportedExtensions_1[_i];
            var filesInDirWithExtension = host.readDirectory(basePath, extension, exclude);
            for (var _a = 0,
                filesInDirWithExtension_1 = filesInDirWithExtension; _a < filesInDirWithExtension_1.length; _a++) {
              var fileName = filesInDirWithExtension_1[_a];
              if (extension === ".ts" && ts.fileExtensionIs(fileName, ".d.ts")) {
                continue;
              }
              if (/\.min\.js$/.test(fileName)) {
                continue;
              }
              if (extension === ".d.ts" || (options.allowJs && ts.contains(ts.supportedJavascriptExtensions, extension))) {
                var baseName = fileName.substr(0, fileName.length - extension.length);
                if (ts.hasProperty(filesSeen, baseName + ".ts") || ts.hasProperty(filesSeen, baseName + ".tsx")) {
                  continue;
                }
              }
              filesSeen[fileName] = true;
              fileNames.push(fileName);
            }
          }
        }
        return fileNames;
      }
      function getTypingOptions() {
        var options = ts.getBaseFileName(configFileName) === "jsconfig.json" ? {
          enableAutoDiscovery: true,
          include: [],
          exclude: []
        } : {
          enableAutoDiscovery: false,
          include: [],
          exclude: []
        };
        var jsonTypingOptions = json["typingOptions"];
        if (jsonTypingOptions) {
          for (var id in jsonTypingOptions) {
            if (id === "enableAutoDiscovery") {
              if (typeof jsonTypingOptions[id] === "boolean") {
                options.enableAutoDiscovery = jsonTypingOptions[id];
              } else {
                errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Unknown_typing_option_0, id));
              }
            } else if (id === "include") {
              options.include = convertJsonOptionToStringArray(id, jsonTypingOptions[id], errors);
            } else if (id === "exclude") {
              options.exclude = convertJsonOptionToStringArray(id, jsonTypingOptions[id], errors);
            } else {
              errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Unknown_typing_option_0, id));
            }
          }
        }
        return options;
      }
    }
    ts.parseJsonConfigFileContent = parseJsonConfigFileContent;
    function convertCompilerOptionsFromJson(jsonOptions, basePath, configFileName) {
      var options = {};
      var errors = [];
      if (configFileName && ts.getBaseFileName(configFileName) === "jsconfig.json") {
        options.allowJs = true;
      }
      if (!jsonOptions) {
        return {
          options: options,
          errors: errors
        };
      }
      var optionNameMap = ts.arrayToMap(ts.optionDeclarations, function(opt) {
        return opt.name;
      });
      for (var id in jsonOptions) {
        if (ts.hasProperty(optionNameMap, id)) {
          var opt = optionNameMap[id];
          var optType = opt.type;
          var value = jsonOptions[id];
          var expectedType = typeof optType === "string" ? optType : "string";
          if (typeof value === expectedType) {
            if (typeof optType !== "string") {
              var key = value.toLowerCase();
              if (ts.hasProperty(optType, key)) {
                value = optType[key];
              } else {
                errors.push(ts.createCompilerDiagnostic(opt.error));
                value = 0;
              }
            }
            if (opt.isFilePath) {
              value = ts.normalizePath(ts.combinePaths(basePath, value));
              if (value === "") {
                value = ".";
              }
            }
            options[opt.name] = value;
          } else {
            errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Compiler_option_0_requires_a_value_of_type_1, id, expectedType));
          }
        } else {
          errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Unknown_compiler_option_0, id));
        }
      }
      return {
        options: options,
        errors: errors
      };
    }
    ts.convertCompilerOptionsFromJson = convertCompilerOptionsFromJson;
    function convertJsonOptionToStringArray(optionName, optionJson, errors, func) {
      var items = [];
      var invalidOptionType = false;
      if (!ts.isArray(optionJson)) {
        invalidOptionType = true;
      } else {
        for (var _i = 0,
            _a = optionJson; _i < _a.length; _i++) {
          var element = _a[_i];
          if (typeof element === "string") {
            var item = func ? func(element) : element;
            items.push(item);
          } else {
            invalidOptionType = true;
            break;
          }
        }
      }
      if (invalidOptionType) {
        errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_should_have_array_of_strings_as_a_value, optionName));
      }
      return items;
    }
  })(ts || (ts = {}));
  var ts;
  (function(ts) {
    var reportDiagnostic = reportDiagnosticSimply;
    function reportDiagnostics(diagnostics, host) {
      for (var _i = 0,
          diagnostics_1 = diagnostics; _i < diagnostics_1.length; _i++) {
        var diagnostic = diagnostics_1[_i];
        reportDiagnostic(diagnostic, host);
      }
    }
    function validateLocaleAndSetLanguage(locale, errors) {
      var matchResult = /^([a-z]+)([_\-]([a-z]+))?$/.exec(locale.toLowerCase());
      if (!matchResult) {
        errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Locale_must_be_of_the_form_language_or_language_territory_For_example_0_or_1, "en", "ja-jp"));
        return false;
      }
      var language = matchResult[1];
      var territory = matchResult[3];
      if (!trySetLanguageAndTerritory(language, territory, errors) && !trySetLanguageAndTerritory(language, undefined, errors)) {
        errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Unsupported_locale_0, locale));
        return false;
      }
      return true;
    }
    function trySetLanguageAndTerritory(language, territory, errors) {
      var compilerFilePath = ts.normalizePath(ts.sys.getExecutingFilePath());
      var containingDirectoryPath = ts.getDirectoryPath(compilerFilePath);
      var filePath = ts.combinePaths(containingDirectoryPath, language);
      if (territory) {
        filePath = filePath + "-" + territory;
      }
      filePath = ts.sys.resolvePath(ts.combinePaths(filePath, "diagnosticMessages.generated.json"));
      if (!ts.sys.fileExists(filePath)) {
        return false;
      }
      var fileContents = "";
      try {
        fileContents = ts.sys.readFile(filePath);
      } catch (e) {
        errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Unable_to_open_file_0, filePath));
        return false;
      }
      try {
        ts.localizedDiagnosticMessages = JSON.parse(fileContents);
      } catch (e) {
        errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Corrupted_locale_file_0, filePath));
        return false;
      }
      return true;
    }
    function countLines(program) {
      var count = 0;
      ts.forEach(program.getSourceFiles(), function(file) {
        count += ts.getLineStarts(file).length;
      });
      return count;
    }
    function getDiagnosticText(message) {
      var args = [];
      for (var _i = 1; _i < arguments.length; _i++) {
        args[_i - 1] = arguments[_i];
      }
      var diagnostic = ts.createCompilerDiagnostic.apply(undefined, arguments);
      return diagnostic.messageText;
    }
    function getRelativeFileName(fileName, host) {
      return host ? ts.convertToRelativePath(fileName, host.getCurrentDirectory(), function(fileName) {
        return host.getCanonicalFileName(fileName);
      }) : fileName;
    }
    function reportDiagnosticSimply(diagnostic, host) {
      var output = "";
      if (diagnostic.file) {
        var _a = ts.getLineAndCharacterOfPosition(diagnostic.file, diagnostic.start),
            line = _a.line,
            character = _a.character;
        var relativeFileName = getRelativeFileName(diagnostic.file.fileName, host);
        output += relativeFileName + "(" + (line + 1) + "," + (character + 1) + "): ";
      }
      var category = ts.DiagnosticCategory[diagnostic.category].toLowerCase();
      output += category + " TS" + diagnostic.code + ": " + ts.flattenDiagnosticMessageText(diagnostic.messageText, ts.sys.newLine) + ts.sys.newLine;
      ts.sys.write(output);
    }
    var redForegroundEscapeSequence = "\u001b[91m";
    var yellowForegroundEscapeSequence = "\u001b[93m";
    var blueForegroundEscapeSequence = "\u001b[93m";
    var gutterStyleSequence = "\u001b[100;30m";
    var gutterSeparator = " ";
    var resetEscapeSequence = "\u001b[0m";
    var elipsis = "...";
    var categoryFormatMap = (_a = {}, _a[ts.DiagnosticCategory.Warning] = yellowForegroundEscapeSequence, _a[ts.DiagnosticCategory.Error] = redForegroundEscapeSequence, _a[ts.DiagnosticCategory.Message] = blueForegroundEscapeSequence, _a);
    function formatAndReset(text, formatStyle) {
      return formatStyle + text + resetEscapeSequence;
    }
    function reportDiagnosticWithColorAndContext(diagnostic, host) {
      var output = "";
      if (diagnostic.file) {
        var start = diagnostic.start,
            length_3 = diagnostic.length,
            file = diagnostic.file;
        var _a = ts.getLineAndCharacterOfPosition(file, start),
            firstLine = _a.line,
            firstLineChar = _a.character;
        var _b = ts.getLineAndCharacterOfPosition(file, start + length_3),
            lastLine = _b.line,
            lastLineChar = _b.character;
        var lastLineInFile = ts.getLineAndCharacterOfPosition(file, file.text.length).line;
        var relativeFileName = getRelativeFileName(file.fileName, host);
        var hasMoreThanFiveLines = (lastLine - firstLine) >= 4;
        var gutterWidth = (lastLine + 1 + "").length;
        if (hasMoreThanFiveLines) {
          gutterWidth = Math.max(elipsis.length, gutterWidth);
        }
        output += ts.sys.newLine;
        for (var i = firstLine; i <= lastLine; i++) {
          if (hasMoreThanFiveLines && firstLine + 1 < i && i < lastLine - 1) {
            output += formatAndReset(padLeft(elipsis, gutterWidth), gutterStyleSequence) + gutterSeparator + ts.sys.newLine;
            i = lastLine - 1;
          }
          var lineStart = ts.getPositionOfLineAndCharacter(file, i, 0);
          var lineEnd = i < lastLineInFile ? ts.getPositionOfLineAndCharacter(file, i + 1, 0) : file.text.length;
          var lineContent = file.text.slice(lineStart, lineEnd);
          lineContent = lineContent.replace(/\s+$/g, "");
          lineContent = lineContent.replace("\t", " ");
          output += formatAndReset(padLeft(i + 1 + "", gutterWidth), gutterStyleSequence) + gutterSeparator;
          output += lineContent + ts.sys.newLine;
          output += formatAndReset(padLeft("", gutterWidth), gutterStyleSequence) + gutterSeparator;
          output += redForegroundEscapeSequence;
          if (i === firstLine) {
            var lastCharForLine = i === lastLine ? lastLineChar : undefined;
            output += lineContent.slice(0, firstLineChar).replace(/\S/g, " ");
            output += lineContent.slice(firstLineChar, lastCharForLine).replace(/./g, "~");
          } else if (i === lastLine) {
            output += lineContent.slice(0, lastLineChar).replace(/./g, "~");
          } else {
            output += lineContent.replace(/./g, "~");
          }
          output += resetEscapeSequence;
          output += ts.sys.newLine;
        }
        output += ts.sys.newLine;
        output += relativeFileName + "(" + (firstLine + 1) + "," + (firstLineChar + 1) + "): ";
      }
      var categoryColor = categoryFormatMap[diagnostic.category];
      var category = ts.DiagnosticCategory[diagnostic.category].toLowerCase();
      output += formatAndReset(category, categoryColor) + " TS" + diagnostic.code + ": " + ts.flattenDiagnosticMessageText(diagnostic.messageText, ts.sys.newLine);
      output += ts.sys.newLine + ts.sys.newLine;
      ts.sys.write(output);
    }
    function reportWatchDiagnostic(diagnostic) {
      var output = new Date().toLocaleTimeString() + " - ";
      if (diagnostic.file) {
        var loc = ts.getLineAndCharacterOfPosition(diagnostic.file, diagnostic.start);
        output += diagnostic.file.fileName + "(" + (loc.line + 1) + "," + (loc.character + 1) + "): ";
      }
      output += "" + ts.flattenDiagnosticMessageText(diagnostic.messageText, ts.sys.newLine) + ts.sys.newLine;
      ts.sys.write(output);
    }
    function padLeft(s, length) {
      while (s.length < length) {
        s = " " + s;
      }
      return s;
    }
    function padRight(s, length) {
      while (s.length < length) {
        s = s + " ";
      }
      return s;
    }
    function reportStatisticalValue(name, value) {
      ts.sys.write(padRight(name + ":", 12) + padLeft(value.toString(), 10) + ts.sys.newLine);
    }
    function reportCountStatistic(name, count) {
      reportStatisticalValue(name, "" + count);
    }
    function reportTimeStatistic(name, time) {
      reportStatisticalValue(name, (time / 1000).toFixed(2) + "s");
    }
    function isJSONSupported() {
      return typeof JSON === "object" && typeof JSON.parse === "function";
    }
    function executeCommandLine(args) {
      var commandLine = ts.parseCommandLine(args);
      var configFileName;
      var cachedConfigFileText;
      var configFileWatcher;
      var directoryWatcher;
      var cachedProgram;
      var rootFileNames;
      var compilerOptions;
      var compilerHost;
      var hostGetSourceFile;
      var timerHandleForRecompilation;
      var timerHandleForDirectoryChanges;
      var cachedExistingFiles;
      var hostFileExists;
      if (commandLine.options.locale) {
        if (!isJSONSupported()) {
          reportDiagnostic(ts.createCompilerDiagnostic(ts.Diagnostics.The_current_host_does_not_support_the_0_option, "--locale"), undefined);
          return ts.sys.exit(ts.ExitStatus.DiagnosticsPresent_OutputsSkipped);
        }
        validateLocaleAndSetLanguage(commandLine.options.locale, commandLine.errors);
      }
      if (commandLine.errors.length > 0) {
        reportDiagnostics(commandLine.errors, compilerHost);
        return ts.sys.exit(ts.ExitStatus.DiagnosticsPresent_OutputsSkipped);
      }
      if (commandLine.options.init) {
        writeConfigFile(commandLine.options, commandLine.fileNames);
        return ts.sys.exit(ts.ExitStatus.Success);
      }
      if (commandLine.options.version) {
        printVersion();
        return ts.sys.exit(ts.ExitStatus.Success);
      }
      if (commandLine.options.help) {
        printVersion();
        printHelp();
        return ts.sys.exit(ts.ExitStatus.Success);
      }
      if (commandLine.options.project) {
        if (!isJSONSupported()) {
          reportDiagnostic(ts.createCompilerDiagnostic(ts.Diagnostics.The_current_host_does_not_support_the_0_option, "--project"), undefined);
          return ts.sys.exit(ts.ExitStatus.DiagnosticsPresent_OutputsSkipped);
        }
        if (commandLine.fileNames.length !== 0) {
          reportDiagnostic(ts.createCompilerDiagnostic(ts.Diagnostics.Option_project_cannot_be_mixed_with_source_files_on_a_command_line), undefined);
          return ts.sys.exit(ts.ExitStatus.DiagnosticsPresent_OutputsSkipped);
        }
        var fileOrDirectory = ts.normalizePath(commandLine.options.project);
        if (!fileOrDirectory || ts.sys.directoryExists(fileOrDirectory)) {
          configFileName = ts.combinePaths(fileOrDirectory, "tsconfig.json");
          if (!ts.sys.fileExists(configFileName)) {
            reportDiagnostic(ts.createCompilerDiagnostic(ts.Diagnostics.Cannot_find_a_tsconfig_json_file_at_the_specified_directory_Colon_0, commandLine.options.project), undefined);
            return ts.sys.exit(ts.ExitStatus.DiagnosticsPresent_OutputsSkipped);
          }
        } else {
          configFileName = fileOrDirectory;
          if (!ts.sys.fileExists(configFileName)) {
            reportDiagnostic(ts.createCompilerDiagnostic(ts.Diagnostics.The_specified_path_does_not_exist_Colon_0, commandLine.options.project), undefined);
            return ts.sys.exit(ts.ExitStatus.DiagnosticsPresent_OutputsSkipped);
          }
        }
      } else if (commandLine.fileNames.length === 0 && isJSONSupported()) {
        var searchPath = ts.normalizePath(ts.sys.getCurrentDirectory());
        configFileName = ts.findConfigFile(searchPath, ts.sys.fileExists);
      }
      if (commandLine.fileNames.length === 0 && !configFileName) {
        printVersion();
        printHelp();
        return ts.sys.exit(ts.ExitStatus.Success);
      }
      if (commandLine.options.watch && commandLine.options.hasOwnProperty("watch")) {
        if (!ts.sys.watchFile) {
          reportDiagnostic(ts.createCompilerDiagnostic(ts.Diagnostics.The_current_host_does_not_support_the_0_option, "--watch"), undefined);
          return ts.sys.exit(ts.ExitStatus.DiagnosticsPresent_OutputsSkipped);
        }
        if (configFileName) {
          var configFilePath = ts.toPath(configFileName, ts.sys.getCurrentDirectory(), ts.createGetCanonicalFileName(ts.sys.useCaseSensitiveFileNames));
          configFileWatcher = ts.sys.watchFile(configFilePath, configFileChanged);
        }
        if (ts.sys.watchDirectory && configFileName) {
          var directory = ts.getDirectoryPath(configFileName);
          directoryWatcher = ts.sys.watchDirectory(directory == "" ? "." : directory, watchedDirectoryChanged, true);
        }
      }
      performCompilation();
      function parseConfigFile() {
        if (!cachedConfigFileText) {
          try {
            cachedConfigFileText = ts.sys.readFile(configFileName);
          } catch (e) {
            var error = ts.createCompilerDiagnostic(ts.Diagnostics.Cannot_read_file_0_Colon_1, configFileName, e.message);
            reportWatchDiagnostic(error);
            ts.sys.exit(ts.ExitStatus.DiagnosticsPresent_OutputsSkipped);
            return;
          }
        }
        if (!cachedConfigFileText) {
          var error = ts.createCompilerDiagnostic(ts.Diagnostics.File_0_not_found, configFileName);
          reportDiagnostics([error], undefined);
          ts.sys.exit(ts.ExitStatus.DiagnosticsPresent_OutputsSkipped);
          return;
        }
        var result = ts.parseConfigFileTextToJson(configFileName, cachedConfigFileText);
        var configObject = result.config;
        if (!configObject) {
          reportDiagnostics([result.error], undefined);
          ts.sys.exit(ts.ExitStatus.DiagnosticsPresent_OutputsSkipped);
          return;
        }
        var configParseResult = ts.parseJsonConfigFileContent(configObject, ts.sys, ts.getDirectoryPath(configFileName), commandLine.options, configFileName);
        if (configParseResult.errors.length > 0) {
          reportDiagnostics(configParseResult.errors, undefined);
          ts.sys.exit(ts.ExitStatus.DiagnosticsPresent_OutputsSkipped);
          return;
        }
        return configParseResult;
      }
      function performCompilation() {
        if (!cachedProgram) {
          if (configFileName) {
            var configParseResult = parseConfigFile();
            rootFileNames = configParseResult.fileNames;
            compilerOptions = configParseResult.options;
          } else {
            rootFileNames = commandLine.fileNames;
            compilerOptions = commandLine.options;
          }
          compilerHost = ts.createCompilerHost(compilerOptions);
          hostGetSourceFile = compilerHost.getSourceFile;
          compilerHost.getSourceFile = getSourceFile;
          hostFileExists = compilerHost.fileExists;
          compilerHost.fileExists = cachedFileExists;
        }
        if (compilerOptions.pretty) {
          reportDiagnostic = reportDiagnosticWithColorAndContext;
        }
        cachedExistingFiles = {};
        var compileResult = compile(rootFileNames, compilerOptions, compilerHost);
        if (!compilerOptions.watch) {
          return ts.sys.exit(compileResult.exitStatus);
        }
        setCachedProgram(compileResult.program);
        reportWatchDiagnostic(ts.createCompilerDiagnostic(ts.Diagnostics.Compilation_complete_Watching_for_file_changes));
      }
      function cachedFileExists(fileName) {
        if (ts.hasProperty(cachedExistingFiles, fileName)) {
          return cachedExistingFiles[fileName];
        }
        return cachedExistingFiles[fileName] = hostFileExists(fileName);
      }
      function getSourceFile(fileName, languageVersion, onError) {
        if (cachedProgram) {
          var sourceFile_1 = cachedProgram.getSourceFile(fileName);
          if (sourceFile_1 && sourceFile_1.fileWatcher) {
            return sourceFile_1;
          }
        }
        var sourceFile = hostGetSourceFile(fileName, languageVersion, onError);
        if (sourceFile && compilerOptions.watch) {
          var filePath = ts.toPath(sourceFile.fileName, ts.sys.getCurrentDirectory(), ts.createGetCanonicalFileName(ts.sys.useCaseSensitiveFileNames));
          sourceFile.fileWatcher = ts.sys.watchFile(filePath, function(fileName, removed) {
            return sourceFileChanged(sourceFile, removed);
          });
        }
        return sourceFile;
      }
      function setCachedProgram(program) {
        if (cachedProgram) {
          var newSourceFiles_1 = program ? program.getSourceFiles() : undefined;
          ts.forEach(cachedProgram.getSourceFiles(), function(sourceFile) {
            if (!(newSourceFiles_1 && ts.contains(newSourceFiles_1, sourceFile))) {
              if (sourceFile.fileWatcher) {
                sourceFile.fileWatcher.close();
                sourceFile.fileWatcher = undefined;
              }
            }
          });
        }
        cachedProgram = program;
      }
      function sourceFileChanged(sourceFile, removed) {
        sourceFile.fileWatcher.close();
        sourceFile.fileWatcher = undefined;
        if (removed) {
          var index = rootFileNames.indexOf(sourceFile.fileName);
          if (index >= 0) {
            rootFileNames.splice(index, 1);
          }
        }
        startTimerForRecompilation();
      }
      function configFileChanged() {
        setCachedProgram(undefined);
        cachedConfigFileText = undefined;
        startTimerForRecompilation();
      }
      function watchedDirectoryChanged(fileName) {
        if (fileName && !ts.isSupportedSourceFileName(fileName, compilerOptions)) {
          return;
        }
        startTimerForHandlingDirectoryChanges();
      }
      function startTimerForHandlingDirectoryChanges() {
        if (timerHandleForDirectoryChanges) {
          clearTimeout(timerHandleForDirectoryChanges);
        }
        timerHandleForDirectoryChanges = setTimeout(directoryChangeHandler, 250);
      }
      function directoryChangeHandler() {
        var parsedCommandLine = parseConfigFile();
        var newFileNames = ts.map(parsedCommandLine.fileNames, compilerHost.getCanonicalFileName);
        var canonicalRootFileNames = ts.map(rootFileNames, compilerHost.getCanonicalFileName);
        if (!ts.arrayIsEqualTo(newFileNames && newFileNames.sort(), canonicalRootFileNames && canonicalRootFileNames.sort())) {
          setCachedProgram(undefined);
          startTimerForRecompilation();
        }
      }
      function startTimerForRecompilation() {
        if (timerHandleForRecompilation) {
          clearTimeout(timerHandleForRecompilation);
        }
        timerHandleForRecompilation = setTimeout(recompile, 250);
      }
      function recompile() {
        timerHandleForRecompilation = undefined;
        reportWatchDiagnostic(ts.createCompilerDiagnostic(ts.Diagnostics.File_change_detected_Starting_incremental_compilation));
        performCompilation();
      }
    }
    ts.executeCommandLine = executeCommandLine;
    function compile(fileNames, compilerOptions, compilerHost) {
      ts.ioReadTime = 0;
      ts.ioWriteTime = 0;
      ts.programTime = 0;
      ts.bindTime = 0;
      ts.checkTime = 0;
      ts.emitTime = 0;
      var program = ts.createProgram(fileNames, compilerOptions, compilerHost);
      var exitStatus = compileProgram();
      if (compilerOptions.listFiles) {
        ts.forEach(program.getSourceFiles(), function(file) {
          ts.sys.write(file.fileName + ts.sys.newLine);
        });
      }
      if (compilerOptions.diagnostics) {
        var memoryUsed = ts.sys.getMemoryUsage ? ts.sys.getMemoryUsage() : -1;
        reportCountStatistic("Files", program.getSourceFiles().length);
        reportCountStatistic("Lines", countLines(program));
        reportCountStatistic("Nodes", program.getNodeCount());
        reportCountStatistic("Identifiers", program.getIdentifierCount());
        reportCountStatistic("Symbols", program.getSymbolCount());
        reportCountStatistic("Types", program.getTypeCount());
        if (memoryUsed >= 0) {
          reportStatisticalValue("Memory used", Math.round(memoryUsed / 1000) + "K");
        }
        reportTimeStatistic("I/O read", ts.ioReadTime);
        reportTimeStatistic("I/O write", ts.ioWriteTime);
        reportTimeStatistic("Parse time", ts.programTime);
        reportTimeStatistic("Bind time", ts.bindTime);
        reportTimeStatistic("Check time", ts.checkTime);
        reportTimeStatistic("Emit time", ts.emitTime);
        reportTimeStatistic("Total time", ts.programTime + ts.bindTime + ts.checkTime + ts.emitTime);
      }
      return {
        program: program,
        exitStatus: exitStatus
      };
      function compileProgram() {
        var diagnostics;
        diagnostics = program.getSyntacticDiagnostics();
        if (diagnostics.length === 0) {
          diagnostics = program.getOptionsDiagnostics().concat(program.getGlobalDiagnostics());
          if (diagnostics.length === 0) {
            diagnostics = program.getSemanticDiagnostics();
          }
        }
        reportDiagnostics(diagnostics, compilerHost);
        if (compilerOptions.noEmit) {
          return diagnostics.length ? ts.ExitStatus.DiagnosticsPresent_OutputsSkipped : ts.ExitStatus.Success;
        }
        var emitOutput = program.emit();
        reportDiagnostics(emitOutput.diagnostics, compilerHost);
        if (emitOutput.emitSkipped) {
          return ts.ExitStatus.DiagnosticsPresent_OutputsSkipped;
        }
        if (diagnostics.length > 0 || emitOutput.diagnostics.length > 0) {
          return ts.ExitStatus.DiagnosticsPresent_OutputsGenerated;
        }
        return ts.ExitStatus.Success;
      }
    }
    function printVersion() {
      ts.sys.write(getDiagnosticText(ts.Diagnostics.Version_0, ts.version) + ts.sys.newLine);
    }
    function printHelp() {
      var output = "";
      var syntaxLength = getDiagnosticText(ts.Diagnostics.Syntax_Colon_0, "").length;
      var examplesLength = getDiagnosticText(ts.Diagnostics.Examples_Colon_0, "").length;
      var marginLength = Math.max(syntaxLength, examplesLength);
      var syntax = makePadding(marginLength - syntaxLength);
      syntax += "tsc [" + getDiagnosticText(ts.Diagnostics.options) + "] [" + getDiagnosticText(ts.Diagnostics.file) + " ...]";
      output += getDiagnosticText(ts.Diagnostics.Syntax_Colon_0, syntax);
      output += ts.sys.newLine + ts.sys.newLine;
      var padding = makePadding(marginLength);
      output += getDiagnosticText(ts.Diagnostics.Examples_Colon_0, makePadding(marginLength - examplesLength) + "tsc hello.ts") + ts.sys.newLine;
      output += padding + "tsc --out file.js file.ts" + ts.sys.newLine;
      output += padding + "tsc @args.txt" + ts.sys.newLine;
      output += ts.sys.newLine;
      output += getDiagnosticText(ts.Diagnostics.Options_Colon) + ts.sys.newLine;
      var optsList = ts.filter(ts.optionDeclarations.slice(), function(v) {
        return !v.experimental;
      });
      optsList.sort(function(a, b) {
        return ts.compareValues(a.name.toLowerCase(), b.name.toLowerCase());
      });
      marginLength = 0;
      var usageColumn = [];
      var descriptionColumn = [];
      for (var i = 0; i < optsList.length; i++) {
        var option = optsList[i];
        if (!option.description) {
          continue;
        }
        var usageText_1 = " ";
        if (option.shortName) {
          usageText_1 += "-" + option.shortName;
          usageText_1 += getParamType(option);
          usageText_1 += ", ";
        }
        usageText_1 += "--" + option.name;
        usageText_1 += getParamType(option);
        usageColumn.push(usageText_1);
        descriptionColumn.push(getDiagnosticText(option.description));
        marginLength = Math.max(usageText_1.length, marginLength);
      }
      var usageText = " @<" + getDiagnosticText(ts.Diagnostics.file) + ">";
      usageColumn.push(usageText);
      descriptionColumn.push(getDiagnosticText(ts.Diagnostics.Insert_command_line_options_and_files_from_a_file));
      marginLength = Math.max(usageText.length, marginLength);
      for (var i = 0; i < usageColumn.length; i++) {
        var usage = usageColumn[i];
        var description = descriptionColumn[i];
        output += usage + makePadding(marginLength - usage.length + 2) + description + ts.sys.newLine;
      }
      ts.sys.write(output);
      return;
      function getParamType(option) {
        if (option.paramType !== undefined) {
          return " " + getDiagnosticText(option.paramType);
        }
        return "";
      }
      function makePadding(paddingLength) {
        return Array(paddingLength + 1).join(" ");
      }
    }
    function writeConfigFile(options, fileNames) {
      var currentDirectory = ts.sys.getCurrentDirectory();
      var file = ts.normalizePath(ts.combinePaths(currentDirectory, "tsconfig.json"));
      if (ts.sys.fileExists(file)) {
        reportDiagnostic(ts.createCompilerDiagnostic(ts.Diagnostics.A_tsconfig_json_file_is_already_defined_at_Colon_0, file), undefined);
      } else {
        var compilerOptions = ts.extend(options, ts.defaultInitCompilerOptions);
        var configurations = {
          compilerOptions: serializeCompilerOptions(compilerOptions),
          exclude: ["node_modules"]
        };
        if (fileNames && fileNames.length) {
          configurations.files = fileNames;
        }
        ts.sys.writeFile(file, JSON.stringify(configurations, undefined, 4));
        reportDiagnostic(ts.createCompilerDiagnostic(ts.Diagnostics.Successfully_created_a_tsconfig_json_file), undefined);
      }
      return;
      function serializeCompilerOptions(options) {
        var result = {};
        var optionsNameMap = ts.getOptionNameMap().optionNameMap;
        for (var name_32 in options) {
          if (ts.hasProperty(options, name_32)) {
            var value = options[name_32];
            switch (name_32) {
              case "init":
              case "watch":
              case "version":
              case "help":
              case "project":
                break;
              default:
                var optionDefinition = optionsNameMap[name_32.toLowerCase()];
                if (optionDefinition) {
                  if (typeof optionDefinition.type === "string") {
                    result[name_32] = value;
                  } else {
                    var typeMap = optionDefinition.type;
                    for (var key in typeMap) {
                      if (ts.hasProperty(typeMap, key)) {
                        if (typeMap[key] === value)
                          result[name_32] = key;
                      }
                    }
                  }
                }
                break;
            }
          }
        }
        return result;
      }
    }
    var _a;
  })(ts || (ts = {}));
  ts.executeCommandLine(ts.sys.args);
})(require('@empty'));
