class FavouriteBloc extends Bloc<FavouriteEvent, FavouriteState> {
  FavouriteBloc() : super(FavouriteInitial()) {
    on<AddToFavorites>((event, emit) {
      List<HostelModel> hostelList = [];
      emit(FavouriteUpdated(hostelList.add(event.hostel)));
    });

    on<RemoveFromFavorites>((event, emit) {});
  }
}

sealed class FavouriteEvent {}

class AddToFavorites extends FavouriteEvent {
  final HostelModel hostel;

  AddToFavorites({required this.hostel});
}

class RemoveFromFavorites extends FavouriteEvent {
  final HostelModel hostel;

  RemoveFromFavorites({required this.hostel});
}

sealed class FavouriteState {}

final class FavouriteInitial extends FavouriteState {}

final class FavouriteUpdated extends FavouriteState {
  List<HostelModel> hostelList;

  FavouriteUpdated(this.hostelList);
}

I want to add this model data to the list using bloc. and later on use that list to populate a screen. im getting this error on the .add() method in the emit function. “This expression has a type of ‘void’ so its value can’t be used”