anchor.diff:  //    WelcomeComponent, PlayComponent, LeaderboardComponent,
       ROUTER_DIRECTIVES
     ],
  -  providers: const [materialProviders, ROUTER_PROVIDERS, SocketService, LeaderboardService],
  +  providers: const [materialProviders, ROUTER_PROVIDERS, LeaderboardService],
   )
   @RouteConfig(const [
     const Route(path: '/welcome', name: 'Welcome', component: WelcomeComponent, useAsDefault: true),
  
positive.code: ])
  class AppComponent {
    final LeaderboardService _leaderboardService;
    final SocketService _socketService;
    
    AppComponent(this._leaderboardService, this._socketService) {}
  }
  
negative.code: import 'package:simon/src/components/leaderboard/leaderboard_component.dart';
  
  import 'package:simon/src/services/leaderboard_service.dart';
  
  @Component(
    selector: 'my-app',
  