--- /dev/null
+/*! *****************************************************************************
+Copyright (c) Microsoft Corporation. All rights reserved.
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+this file except in compliance with the License. You may obtain a copy of the
+License at http://www.apache.org/licenses/LICENSE-2.0
+
+THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
+WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
+MERCHANTABLITY OR NON-INFRINGEMENT.
+
+See the Apache Version 2.0 License for specific language governing permissions
+and limitations under the License.
+***************************************************************************** */
+
+
+
+/// <reference no-default-lib="true"/>\r
+
+
+/// <reference lib="es2015.iterable" />\r
+/// <reference lib="es2015.symbol" />\r
+\r
+interface SymbolConstructor {\r
+ /**\r
+ * A regular expression method that matches the regular expression against a string. Called\r
+ * by the String.prototype.matchAll method.\r
+ */\r
+ readonly matchAll: symbol;\r
+}\r
+\r
+interface RegExp {\r
+ /**\r
+ * Matches a string with this regular expression, and returns an iterable of matches\r
+ * containing the results of that search.\r
+ * @param string A string to search within.\r
+ */\r
+ [Symbol.matchAll](str: string): IterableIterator<RegExpMatchArray>;\r
+}\r