Utilize lodash for polyfill of methods required by React

lodash-es5-shim.js

/* global _ */
// Based on https://github.com/es-shims/es5-shim
;(function () {
	"use strict";

	/* Provides the following polyfills
	 *
	 * Array.isArray
	 * Array.prototype.forEach
	 * Array.prototype.indexOf
	 * Array.prototype.some
	 * Date.now
	 * Function.prototype.bind
	 * Object.keys
	 */

	var properlyBoxesContext = function properlyBoxed (method) {
		var properlyBoxes = true;
		if (method) {
			method.call("foo", function () {
				if ("object" !== typeof arguments[2]) {
					properlyBoxes = false;
				}
			});
		}
		return !!method && properlyBoxes;
	};

	if (!Array.isArray) {
		Array.isArray = _.isArray;
	}

	if (!Array.prototype.forEach || !properlyBoxesContext(Array.prototype.forEach)) {
		Array.prototype.forEach = function forEach(callback, thisArg) {
			return _.each(this, callback, thisArg);
		};
	}

	if (!Array.prototype.indexOf || ([0, 1].indexOf(1, 2) != -1)) {
		Array.prototype.indexOf = function indexOf(array, value, fromIndex) {
			return _.indexOf(this, array, value, fromIndex);
		};
	}

	if (!Array.prototype.some || !properlyBoxesContext(Array.prototype.some)) {
		Array.prototype.some = function some(collection, callback, thisArg) {
			return _.some(this, collection, callback, thisArg);
		};
	}

	if (!Date.now) {
		Date.now = function now() {
			return (new Date()).getTime();
		};
	}

	if (!Function.prototype.bind) {
		Function.prototype.bind = (function () {
			var curried = _.curry(_.bind);
			return function bind() {
				return curried(this).apply(this, arguments);
			};
		}());
	}

	if (!Object.keys) {
		Object.keys = _.keys;
	}
}());