angular2/es6/prod/src/core/application_tokens.js

Angular 2 - a web framework for modern web apps

import { OpaqueToken, Provider } from 'angular2/src/core/di';
import { CONST_EXPR, Math, StringWrapper } from 'angular2/src/facade/lang';
/**
 * 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.
 */
export const APP_ID = CONST_EXPR(new OpaqueToken('AppId'));
function _appIdRandomProviderFactory() {
    return `${_randomChar()}${_randomChar()}${_randomChar()}`;
}
/**
 * Providers that will generate a random APP_ID_TOKEN.
 */
export const APP_ID_RANDOM_PROVIDER = CONST_EXPR(new Provider(APP_ID, { useFactory: _appIdRandomProviderFactory, deps: [] }));
function _randomChar() {
    return StringWrapper.fromCharCode(97 + Math.floor(Math.random() * 25));
}
/**
 * A function that will be executed when a platform is initialized.
 */
export const PLATFORM_INITIALIZER = CONST_EXPR(new OpaqueToken("Platform Initializer"));
/**
 * A function that will be executed when an application is initialized.
 */
export const APP_INITIALIZER = CONST_EXPR(new OpaqueToken("Application Initializer"));
/**
 * A token which indicates the root directory of the application
 */
export const PACKAGE_ROOT_URL = CONST_EXPR(new OpaqueToken("Application Packages Root URL"));