import { Component , OnInit , ChangeDetectionStrategy } from '@angular/core' ; import { GameService } from '../game.service' ; @ Component ( { selector : 'app-collectibles' , templateUrl : './collectibles.page.html' , styleUrls : [ './collectibles.page.scss' ] , changeDetection : ChangeDetectionStrategy . OnPush } ) export class CollectiblesPage implements OnInit { constructor ( public gameService ) { } ngOnInit ( ) { } }