angular-docs-cn/public/docs/_examples/dependency-injection/ts/app/heroes/hero.service.provider.ts

// #docregion
import {provide}     from '@angular/core';
import {HeroService} from './hero.service';
import {Logger}      from '../logger.service';
import {UserService} from '../user.service';

// #docregion factory
let heroServiceFactory = (logger: Logger, userService: UserService) => {
  return new HeroService(logger, userService.user.isAuthorized);
}
// #enddocregion factory

// #docregion provider
export let heroServiceProvider =
  provide(HeroService, {
    useFactory: heroServiceFactory,
    deps: [Logger, UserService]
  });
// #enddocregion provider