angular-docs-cn/public/docs/_examples/server-communication/ts/app/hero-data.ts

// #docregion
import { InMemoryDbService } from 'angular-in-memory-web-api';
export class HeroData implements InMemoryDbService {
  createDb() {
    let heroes = [
      { id: 1, name: 'Windstorm' },
      { id: 2, name: 'Bombasto' },
      { id: 3, name: 'Magneta' },
      { id: 4, name: 'Tornado' }
    ];
    return {heroes};
  }
}