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

packages/core/src/application_tokens.ts

@@ -0,0 +1,70 @@
+/**
+ * @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 {InjectionToken} from './di';
+import {ComponentRef} from './linker/component_factory';
+
+
+/**
+ * A DI Token representing a unique string id assigned to the application by Angular and used
+ * primarily for prefixing application attributes and CSS styles when
+ * {@link ViewEncapsulation#Emulated} is being used.
+ *
+ * If you need to avoid randomly generated value to be used as an application id, you can provide
+ * a custom value via a DI provider <!-- TODO: provider --> configuring the root {@link Injector}
+ * using this token.
+ * @experimental
+ */
+export const APP_ID = new InjectionToken<string>('AppId');
+
+export function _appIdRandomProviderFactory() {
+  return `${_randomChar()}${_randomChar()}${_randomChar()}`;
+}
+
+/**
+ * Providers that will generate a random APP_ID_TOKEN.
+ * @experimental
+ */
+export const APP_ID_RANDOM_PROVIDER = {
+  provide: APP_ID,
+  useFactory: _appIdRandomProviderFactory,
+  deps: <any[]>[],
+};
+
+function _randomChar(): string {
+  return String.fromCharCode(97 + Math.floor(Math.random() * 25));
+}
+
+/**
+ * A function that will be executed when a platform is initialized.
+ * @experimental
+ */
+export const PLATFORM_INITIALIZER = new InjectionToken<Array<() => void>>('Platform Initializer');
+
+/**
+ * A token that indicates an opaque platform id.
+ * @experimental
+ */
+export const PLATFORM_ID = new InjectionToken<Object>('Platform ID');
+
+/**
+ * All callbacks provided via this token will be called for every component that is bootstrapped.
+ * Signature of the callback:
+ *
+ * `(componentRef: ComponentRef) => void`.
+ *
+ * @experimental
+ */
+export const APP_BOOTSTRAP_LISTENER =
+    new InjectionToken<Array<(compRef: ComponentRef<any>) => void>>('appBootstrapListener');
+
+/**
+ * A token which indicates the root directory of the application
+ * @experimental
+ */
+export const PACKAGE_ROOT_URL = new InjectionToken<string>('Application Packages Root URL');