refactor: move angular source to /packages rather than modules/@angular

packages/core/src/application_module.ts

@@ -0,0 +1,59 @@
+/**
+ * @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 {APP_INITIALIZER, ApplicationInitStatus} from './application_init';
+import {ApplicationRef, ApplicationRef_} from './application_ref';
+import {APP_ID_RANDOM_PROVIDER} from './application_tokens';
+import {IterableDiffers, KeyValueDiffers, defaultIterableDiffers, defaultKeyValueDiffers} from './change_detection/change_detection';
+import {Inject, Optional, SkipSelf} from './di/metadata';
+import {LOCALE_ID} from './i18n/tokens';
+import {Compiler} from './linker/compiler';
+import {NgModule} from './metadata';
+import {initServicesIfNeeded} from './view/index';
+
+export function _iterableDiffersFactory() {
+  return defaultIterableDiffers;
+}
+
+export function _keyValueDiffersFactory() {
+  return defaultKeyValueDiffers;
+}
+
+export function _localeFactory(locale?: string): string {
+  return locale || 'en-US';
+}
+
+export function _initViewEngine() {
+  initServicesIfNeeded();
+}
+
+/**
+ * This module includes the providers of @angular/core that are needed
+ * to bootstrap components via `ApplicationRef`.
+ *
+ * @experimental
+ */
+@NgModule({
+  providers: [
+    ApplicationRef_,
+    {provide: ApplicationRef, useExisting: ApplicationRef_},
+    ApplicationInitStatus,
+    Compiler,
+    APP_ID_RANDOM_PROVIDER,
+    {provide: IterableDiffers, useFactory: _iterableDiffersFactory},
+    {provide: KeyValueDiffers, useFactory: _keyValueDiffersFactory},
+    {
+      provide: LOCALE_ID,
+      useFactory: _localeFactory,
+      deps: [[new Inject(LOCALE_ID), new Optional(), new SkipSelf()]]
+    },
+    {provide: APP_INITIALIZER, useValue: _initViewEngine, multi: true},
+  ]
+})
+export class ApplicationModule {
+}