test-bed-patch.ts

import {resetFakeAsyncZone} from './fake_async';
import {TestBed} from './test_bed';
declare var global: any;
const _global = <any>(typeof window === 'undefined' ? global : window);
// Reset the test providers and the fake async zone before each test.
if (_global.beforeEach) {
  _global.beforeEach(() => {
    TestBed.resetTestingModule();
    resetFakeAsyncZone();
  });
}