angular-docs-cn/public/docs/_examples/upgrade-module/ts/app/2-to-1-providers/heroes.ts

// #docregion
import { Injectable } from '@angular/core';
import { Hero } from '../hero';

@Injectable()
export class Heroes {
  get() {
    return [
      new Hero(1, 'Windstorm'),
      new Hero(2, 'Spiderman')
    ];
  }
}