implementation.js
a00ef2159c6eissn4frontend

implementation.js
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			'use strict';

			// modified from https://github.com/es-shims/es6-shim
			var keys = require('object-keys');
			var canBeObject = function (obj) {
			return typeof obj !== 'undefined' && obj !== null;
			};
			var hasSymbols = require('has-symbols/shams')();
			var callBound = require('call-bind/callBound');
			var toObject = Object;
			var $push = callBound('Array.prototype.push');
			var $propIsEnumerable = callBound('Object.prototype.propertyIsEnumerable');
			var originalGetSymbols = hasSymbols ? Object.getOwnPropertySymbols : null;

			// eslint-disable-next-line no-unused-vars
			module.exports = function assign(target, source1) {
			if (!canBeObject(target)) { throw new TypeError('target must be an object'); }
			var objTarget = toObject(target);
			var s, source, i, props, syms, value, key;
			for (s = 1; s < arguments.length; ++s) {
			source = toObject(arguments[s]);
			props = keys(source);
			var getSymbols = hasSymbols && (Object.getOwnPropertySymbols \|\| originalGetSymbols);
			if (getSymbols) {
			syms = getSymbols(source);
			for (i = 0; i < syms.length; ++i) {
			key = syms[i];
			if ($propIsEnumerable(source, key)) {
			$push(props, key);
			}
			}
			}
			for (i = 0; i < props.length; ++i) {
			key = props[i];
			value = source[key];
			if ($propIsEnumerable(source, key)) {
			objTarget[key] = value;
			}
			}
			}
			return objTarget;
			};