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