--- /dev/null
+'use strict';
+var $ = require('../internals/export');
+var $trimStart = require('../internals/string-trim').start;
+var forcedStringTrimMethod = require('../internals/string-trim-forced');
+
+var FORCED = forcedStringTrimMethod('trimStart');
+
+var trimStart = FORCED ? function trimStart() {
+ return $trimStart(this);
+} : ''.trimStart;
+
+// `String.prototype.{ trimStart, trimLeft }` methods
+// https://github.com/tc39/ecmascript-string-left-right-trim
+$({ target: 'String', proto: true, forced: FORCED }, {
+ trimStart: trimStart,
+ trimLeft: trimStart
+});