2 require('../../modules/es.map');
3 require('../../modules/es.string.iterator');
4 require('../../modules/esnext.map.from');
5 require('../../modules/web.dom-collections.iterator');
6 var path = require('../../internals/path');
9 var mapFrom = Map.from;
11 module.exports = function from(source, mapFn, thisArg) {
12 return mapFrom.call(typeof this === 'function' ? this : Map, source, mapFn, thisArg);