if ( !window.fetch ) { var element = document.createElement('script'); element['src'] = '../../../vendor/fetch/fetch.umd.js'; document.getElementsByTagName('head')[0].appendChild(element); if ( !window.Promise ) { element = document.createElement('script'); element['src'] = '../../../vendor/es6-promise/es6-promise.auto.min.js'; document.getElementsByTagName('head')[0].appendChild(element); } if (typeof Object.assign != 'function') { Object.assign = function(target) { 'use strict'; if (target == null) { throw new TypeError('Cannot convert undefined or null to object'); } target = Object(target); for (var index = 1; index < arguments.length; index++) { var source = arguments[index]; if (source != null) { for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } } return target; }; } }