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