hunk.code_window: export async function executeTest() {
     // Ensure a DL build is used.
     await replaceInFile(
       '.browserslistrc',
       'not IE 9-11',
       'IE 9-11',
     );
     await updateJsonFile('tsconfig.base.json', config => {
       config.compilerOptions.target = 'es2015';
  
hunk.labels: keep keep keep keep replace replace keep keep keep keep
hunk.after_edit:     'not IE 11',
       'IE 11',
  
hunk.file_path: tests/legacy-cli/e2e/tests/i18n/ivy-localize-dl-xliff2.ts
hunk.type: replace
file: /**
   * @license
   * Copyright Google Inc. All Rights Reserved.
   *
   * Use of this source code is governed by an MIT-style license that can be
   * found in the LICENSE file at https://angular.io/license
   */
  
  import { flattenArray } from './utils';
  
  describe('@ngtools/webpack utils', () => {
    describe('flattenArray', () => {
      it('should flatten an array', () => {
        const arr = flattenArray(['module', ['browser', 'main']]);
        expect(arr).toEqual(['module', 'browser', 'main']);
      });
    });
  });
  