fix(@angular/cli): --verbose is an unknown option of serve

Closes #11086

Author: alan-agius4

packages/angular_devkit/build_angular/src/dev-server/index.ts

@@ -57,6 +57,7 @@ export interface DevServerBuilderOptions {
   baseHref?: string;
   progress?: boolean;
   poll?: number;
+  verbose?: boolean;
 }
 
 
@@ -407,6 +408,7 @@ export class DevServerBuilder implements Builder<DevServerBuilderOptions> {
       ...(options.baseHref !== undefined ? { baseHref: options.baseHref } : {}),
       ...(options.progress !== undefined ? { progress: options.progress } : {}),
       ...(options.poll !== undefined ? { poll: options.poll } : {}),
+      ...(options.verbose !== undefined ? { verbose: options.verbose } : {}),
     };
 
     const browserTargetSpec = { project, target, configuration, overrides };

packages/angular_devkit/build_angular/src/dev-server/schema.json

@@ -40,6 +40,11 @@
       "default": false,
       "alias": "o"
     },
+    "verbose": {
+      "type": "boolean",
+      "description": "Adds more details to output logging.",
+      "default": false
+    },
     "liveReload": {
       "type": "boolean",
       "description": "Whether to reload the page on change, using live-reload.",

packages/angular_devkit/build_angular/test/dev-server/works_spec_large.ts

@@ -6,9 +6,10 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import { request, runTargetSpec } from '@angular-devkit/architect/testing';
+import { TestLogger, request, runTargetSpec } from '@angular-devkit/architect/testing';
 import { from } from 'rxjs';
 import { concatMap, take, tap } from 'rxjs/operators';
+import { DevServerBuilderOptions } from '../../src';
 import { devServerTargetSpec, host } from '../utils';
 
 
@@ -24,4 +25,13 @@ describe('Dev Server Builder', () => {
       take(1),
     ).toPromise().then(done, done.fail);
   }, 30000);
+
+  it('works with verbose', (done) => {
+    const overrides: Partial<DevServerBuilderOptions> = { verbose: true };
+    const logger = new TestLogger('verbose-serve');
+    runTargetSpec(host, devServerTargetSpec, overrides, undefined, logger).pipe(
+      tap(() => expect(logger.includes('Built at')).toBe(true)),
+      take(1),
+    ).toPromise().then(done, done.fail);
+  }, 30000);
 });