??? ???? ????? Angular2 ????? ??? ??

????? ???? ??? Angular2 ????? ??? ????? Angular? ??? ??? ?????. ??. ?? ???? ??? ??? ????.

var headers = ... // Retrieve headers from the server

bootstrap(AppComponent, [{ provide: 'headers', useValue: headers }]);

? ?? ??? ???? ??? ????? Angular ?? ?? ?? ???? ??? ? ????.

class SomeComponentOrService {
   constructor(@Inject('headers') private headers) {}
}

?? ??? ?? ??? BaseRequestOptions? ?? ??? ?? ????.

class MyRequestOptions extends BaseRequestOptions {
  constructor(private headers) {
    super();
  }
} 

var values = ... // Fetch headers from the server
var headers = new MyRequestOptions(values);

bootstrap(AppComponent, [{ provide: BaseRequestOptions, useValue: headers }]);

? ??? ???? ??? ?? Angular ???????? ??? ??? ??? ? ????. BaseRequestOptions ?? ??:

class ConfigService {
  constructor(private http: Http, @Inject(BaseRequestOptions) private baseRequestOptions) { }
}

??: AoT ???? ?? ??? ??? ??? ??? ?????.

function loadContext(context: ContextService) {
  return () => context.load();
}

??? NgModule ???:

@NgModule({
  ...
  providers: [ ..., ContextService, { provide: APP_INITIALIZER, useFactory: loadContext, deps: [ContextService], multi: true } ],

this.myDep = injector.get(MyDependency);

Instead of directly injecting `MyDependency`:

@Injectable()
???? ??? ConfigService {
?? ???:Router;
???(/?? ???:Router/???:???) {

setTimeout(() => this.router = injector.get(Router));

}
}

? ??? ??? ??? ????? Angular2 ????? ??? ??? ??? ? ????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!