import { Provider } from '@angular/core' ; import { RouterStateSerializer } from '@ngrx/router-store' ; import { BidService } from './bid.service' ; import { ProductService , HttpProductService } from './product.service' ; import { RouterStateSerializerService } from './router-state-serializer.service' ; export { BidMessage , BidService } from './bid.service' ; export { Product , ProductSearchParams , ProductService } from './product.service' ; export { RouterStateSerializerService , RouterStateUrl } from './router-state-serializer.service' ; export const SHARED_SERVICES = [ { provide : BidService , useClass : BidService } , { provide : ProductService , useClass : HttpProductService } , { provide : RouterStateSerializer , useClass : RouterStateSerializerService } ] ;