text: 'use strict';
  
  // Minimal set of polyfills for PhantomJS 1.x under Karma.
  // this Polyfills:
  //
  // - ES5
  // - ES6 Promises
  // - the DOM URL API
  
  // Basic polyfills for APIs which are supported natively
  // by all browsers we support (IE >= 10)
  require('core-js/es5');
  
  // PhantomJS 1.x does not support rAF.
  require('raf').polyfill();
  
  // Additional polyfills for newer features.
  // Be careful that any polyfills used here match what is used in the
  // app itself.
  require('./polyfills');
  
  // PhantomJS 2.x includes a `URL` constructor so `new URL` works
  // but it appears to be broken.
  require('js-polyfills/url');
  