fix(packages): use ES modules for primary build (#11120)

modules/@angular/common/testing/facade

@@ -0,0 +1 @@
+../../facade/src

modules/@angular/common/testing/index.ts

@@ -0,0 +1,15 @@
+/**
+ * @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
+ */
+
+/**
+ * @module
+ * @description
+ * Entry point for all public APIs of the common/testing package.
+ */
+export {SpyLocation} from './location_mock';
+export {MockLocationStrategy} from './mock_location_strategy';

modules/@angular/common/testing/location_mock.ts

@@ -6,11 +6,9 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+import {Location, LocationStrategy} from '@angular/common';
 import {EventEmitter, Injectable} from '@angular/core';
 
-import {Location} from '../index';
-import {LocationStrategy} from '../src/location/location_strategy';
-
 
 /**
  * A spy for {@link Location} that allows tests to fire simulated location events.

modules/@angular/common/testing/mock_location_strategy.ts

@@ -6,10 +6,8 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {Injectable} from '@angular/core';
-
-import {LocationStrategy} from '../index';
-import {EventEmitter} from '../src/facade/async';
+import {LocationStrategy} from '@angular/common';
+import {EventEmitter, Injectable} from '@angular/core';