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