Necesito proporcionar un servicio a través del método de fábrica que resuelva correctamente el servicio según la promesa. He creado un componente simple y escribo clases.

 import {Component, Inject, OnInit} from '@angular/core'; import {basketPriceProvider, IBasketPriceService, IBasketPriceToken} from "./basket-price.interface"; @Component({ selector: 'test-inject-component', template: ` <div> <p>Price is: {{price}}</p> </div>`, providers: [ basketPriceProvider ] }) export class TestInjectComponent implements OnInit { public title: number; constructor(@Inject(IBasketPriceToken) private basketPriceService: IBasketPriceService) { console.log(basketPriceService, 'basketPriceService'); } ngOnInit() { console.log('init test-inject-component'); console.log('try to get prices: ', this.basketPriceService.getPrices()); this.title = this.basketPriceService.getPrices(); } }

Y definición de fábrica/proveedor

 import {Injectable, InjectionToken} from "@angular/core"; import {IUserSession, IUserSessionToken} from "@bf/core"; import {User} from "../../modules/core/shared/models/user.interface"; export let IBasketPriceToken = new InjectionToken('IBasketPriceService'); export interface IBasketPriceService { getPrices(): number; } @Injectable() export class CustomerBasketPriceService implements IBasketPriceService { getPrices(): number { return 0; } } @Injectable() export class AnonymousBasketService implements IBasketPriceService { getPrices(): number { return 1; } } export let basketPriceFactory = function basketPriceFactory(userService: IUserSession): Promise<IBasketPriceService> { return userService.getActiveUser().toPromise().then((user: User) => { if (user) { return new CustomerBasketPriceService(); } else { return new AnonymousBasketService(); } }); }; export let basketPriceProvider = { provide: IBasketPriceToken, useFactory: basketPriceFactory, deps: [IUserSessionToken] };

¿Alguien sabe cómo usar Promise con useFactory?