--- /dev/null
+'use strict';
+require('../../modules/es.map');
+require('../../modules/es.string.iterator');
+require('../../modules/esnext.map.from');
+require('../../modules/web.dom-collections.iterator');
+var path = require('../../internals/path');
+
+var Map = path.Map;
+var mapFrom = Map.from;
+
+module.exports = function from(source, mapFn, thisArg) {
+ return mapFrom.call(typeof this === 'function' ? this : Map, source, mapFn, thisArg);
+};