angular-cn/public/docs/_examples/dependency-injection/ts/app/app.config.ts

//#docregion
// #docregion token
import {OpaqueToken} from '@angular/core';

export let APP_CONFIG = new OpaqueToken('app.config');
// #enddocregion token

//#docregion config
export interface Config {
  apiEndpoint: string,
  title: string
}

export const CONFIG:Config = {
  apiEndpoint: 'api.heroes.com',
  title: 'Dependency Injection'
};
//#enddocregion config