--- /dev/null
+'use strict';
+// https://tc39.github.io/String.prototype.matchAll/
+var $export = require('./_export')
+ , defined = require('./_defined')
+ , toLength = require('./_to-length')
+ , isRegExp = require('./_is-regexp')
+ , getFlags = require('./_flags')
+ , RegExpProto = RegExp.prototype;
+
+var $RegExpStringIterator = function(regexp, string){
+ this._r = regexp;
+ this._s = string;
+};
+
+require('./_iter-create')($RegExpStringIterator, 'RegExp String', function next(){
+ var match = this._r.exec(this._s);
+ return {value: match, done: match === null};
+});
+
+$export($export.P, 'String', {
+ matchAll: function matchAll(regexp){
+ defined(this);
+ if(!isRegExp(regexp))throw TypeError(regexp + ' is not a regexp!');
+ var S = String(this)
+ , flags = 'flags' in RegExpProto ? String(regexp.flags) : getFlags.call(regexp)
+ , rx = new RegExp(regexp.source, ~flags.indexOf('g') ? flags : 'g' + flags);
+ rx.lastIndex = toLength(regexp.lastIndex);
+ return new $RegExpStringIterator(rx, S);
+ }
+});
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