fix(@schematics/angular): Add file generation for service worker schematic

Author: Brocco

packages/schematics/angular/service-worker/index.ts

@@ -11,7 +11,12 @@ import {
   SchematicsException,
   Tree,
   UpdateRecorder,
+  apply,
   chain,
+  mergeWith,
+  move,
+  template,
+  url,
 } from '@angular-devkit/schematics';
 import * as ts from 'typescript';
 import { addSymbolToNgModuleMetadata, isImported } from '../utility/ast-utils';
@@ -158,7 +163,19 @@ function getTsSourceFile(host: Tree, path: string): ts.SourceFile {
 
 export default function (options: ServiceWorkerOptions): Rule {
   return (host: Tree, context: SchematicContext) => {
+    const workspace = getWorkspace(host);
+    const project = workspace.projects[options.project];
+    if (!project) {
+      throw new SchematicsException(`Invalid project name (${options.project})`);
+    }
+
+    const templateSource = apply(url('./files'), [
+      template({...options}),
+      move(project.root),
+    ]);
+
     return chain([
+      mergeWith(templateSource),
       updateConfigFile(options),
       addDependencies(),
       updateAppModule(options),

packages/schematics/angular/service-worker/index_spec.ts

@@ -90,6 +90,11 @@ describe('Service Worker Schematic', () => {
     // tslint:disable-next-line:max-line-length
     const regex = /ServiceWorkerModule\.register\('\/ngsw-worker.js\', { enabled: environment.production }\)/;
     expect(pkgText).toMatch(regex);
+  });
 
+  it('should put the ngsw-config.json file in the project root', () => {
+    const tree = schematicRunner.runSchematic('service-worker', defaultOptions, appTree);
+    const path = '/projects/bar/ngsw-config.json';
+    expect(tree.exists(path)).toEqual(true);
   });
 });