import { Component , OnInit } from '@angular/core' ; import { AngularFirestore , AngularFirestoreCollection } from 'angularfire2/firestore' ; import { AngularFireAuth } from 'angularfire2/auth' ; import { Observable } from 'rxjs/Observable' ; import { AuthService } from './core/auth.service' ; import { PaymentService } from './payment/payment.service' ; @ Component ( { selector : 'app-root' , templateUrl : './app.component.html' , styleUrls : [ './app.component.sass' ] } ) export class AppComponent implements OnInit { constructor ( private auth , private pmt ) { } ngOnInit ( ) { } }