prefer-multi-bloc-provider

added in: 1.2.0

performance

Warns when a BlocProvider / BlocListener / RepositoryProvider can be replace with a Multi version.

Replacing with multi provider improves the readability and reduces the widget tree nesting level.

Additional resources:

• https://bloclibrary.dev/#/flutterbloccoreconcepts?id=multiblocprovider

Example

❌ Bad:

final provider = BlocProvider<BlocA>(
  create: (context) => BlocA(),
  child: BlocProvider<BlocB>(
    create: (context) => BlocB(),
    child: BlocProvider<BlocC>(
      create: (context) => BlocC(),
      child: Widget(),
    ),
  ),
);

✅ Good:

final multiProvider = MultiBlocProvider(
  providers: [
    BlocProvider<BlocA>(create: (context) => BlocA()),
    BlocProvider<BlocB>(create: (context) => BlocB()),
    BlocProvider<BlocC>(create: (context) => BlocC()),
  ],
  child: Widget(),
);