Prefer Cubit

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newdart

Prefer using Cubit instances of Bloc instances.

Rationale

This rule is purely a stylistic rule. In some cases, teams may prefer to standardize on just using Cubit instances throughout their entire application for consistency.

Examples

Avoid using Bloc instances.

BAD:

import 'package:bloc/bloc.dart';

enum CounterEvent { increment };

class CounterBloc extends Bloc<CounterEvent, int> {
  CounterBloc() : super(0) {
    on<CounterEvent>((event, emit) => emit(state + 1));
  }
}

GOOD:

import 'package:bloc/bloc.dart';

class CounterCubit extends Cubit<int> {
  CounterCubit() : super(0);

  void increment() => emit(state + 1);
}

Enable

To enable the prefer_cubit rule, add it to your analysis_options.yaml under bloc > rules:

YAML List
YAML Map

bloc:
  rules:
    - prefer_cubit

bloc:
  rules:
    prefer_cubit: true