angular-cn/public/docs/_examples/tutorial/ts/app/hero.service.ts

import {Injectable} from 'angular2/core';
import {HEROES} from './mock-heroes';

@Injectable()
export class HeroService {
	getHeroes() {
		return Promise.resolve(HEROES);
	}

	getHero(id: number) {
    return Promise.resolve(HEROES)
      .then(heroes => heroes.filter(h => h.id === id)[0]);
	}
}