fix(web): undo core-js removal (#17048)

packages/web/migrations.json

@@ -71,12 +71,6 @@
       "version": "16.0.0-beta.4",
       "description": "Replace @nrwl/web executors with @nx/webpack and @nx/rollup",
       "implementation": "./src/migrations/update-16-0-0-update-executors/update-16-0-0-update-executors"
-    },
-    "update-16-2-0-remove-packages": {
-      "cli": "nx",
-      "version": "16.2.0-beta.0",
-      "description": "Remove core-js and regenerator-runtime packages",
-      "implementation": "./src/migrations/update-16-2-0-remove-packages/update-16-2-0-remove-packages"
     }
   },
   "packageJsonUpdates": {

packages/web/src/migrations/update-16-2-0-remove-packages/update-16-2-0-remove-packages.spec.ts

@@ -1,27 +0,0 @@
-import { Tree, readJson, updateJson } from '@nx/devkit';
-import { createTreeWithEmptyWorkspace } from 'nx/src/devkit-testing-exports';
-import removePackages from './update-16-2-0-remove-packages';
-
-describe('update-16-2-0-remove-packages', () => {
-  let tree: Tree;
-  beforeEach(() => {
-    tree = createTreeWithEmptyWorkspace();
-
-    updateJson(tree, 'package.json', (json) => {
-      json.dependencies['core-js'] = '3.6.5';
-      json.dependencies['regenerator-runtime'] = '0.13.7';
-      return json;
-    });
-  });
-
-  it('should remove core-js & regenerator-runtime packages', async () => {
-    await removePackages(tree);
-
-    expect(
-      readJson(tree, 'package.json').dependencies['core-js']
-    ).not.toBeDefined();
-    expect(
-      readJson(tree, 'package.json').dependencies['regenerator-runtime']
-    ).not.toBeDefined();
-  });
-});

packages/web/src/migrations/update-16-2-0-remove-packages/update-16-2-0-remove-packages.ts

@@ -1,15 +0,0 @@
-import {
-  Tree,
-  formatFiles,
-  removeDependenciesFromPackageJson,
-} from '@nx/devkit';
-
-export default async function removePackages(tree: Tree): Promise<void> {
-  removeDependenciesFromPackageJson(
-    tree,
-    ['core-js', 'regenerator-runtime'],
-    []
-  );
-
-  await formatFiles(tree);
-}