ng-metadata is the answer to upgrading to Angular 2

// bootstrap.ts
import { bootstrap } from 'ng-metadata/platform';
import { HeroModule } from './hero';
bootstrap(HeroModule);
// hero.ts
import * as angular from 'angular';
import { provide } from 'ng-metadata/core';
import { HeroComponent } from './hero.component';
import { HeroService } from './hero.service';
export const HeroModule = angular
  .module('hero', [])
  .directive(...provide(HeroComponent))
  .service(...provide(HeroService)).name;
// hero.service.ts
import { Injectable, Inject } from 'ng-metadata/core';
@Injectable()
export class HeroService {
  constructor(@Inject('$http') private $http: ng.IHttpService) {}
  fetchAll() {
    return this.$http.get('/api/heroes');
  }
}
// hero.component.ts
import { Component, Inject, Input, Output } from 'ng-metadata/core';
import { HeroService } from './hero.service';
@Component({
  selector: 'hero-cmp',
  templateUrl: 'hero.html',
  legacy: { transclude: true },
})
export class HeroComponent {
  @Input() name: string;
  @Output() onCall: Function;
  constructor(
    // we need to inject via @Inject because angular 1 doesn't give us proper types
    @Inject('$log') private $log: ng.ILogService,
    // here we are injecting by Type
    // which is possible thanks to reflect-metadata and Typescript and because our service
    // is defined as a class
    private heroSvc: HeroService
  ) {}
  ngOnInit() {
    /* your init logic */
  }
}

// https://angular.io/docs/ts/latest/tutorial/toh-pt4.html
// app/app.component.ts
@Component({
  providers: [HeroService],
})
export class AppComponent implements OnInit {
  title = 'Tour of Heroes';
  heroes: Hero[];
  selectedHero: Hero;
  constructor(private heroService: HeroService) {}
}