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prefer-multi-bloc-provider

added in: 1.2.0
warning
Free+

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.

Example​

❌ Bad:

// LINT: Prefer 'MultiBlocProvider' instead of multiple nested 'BlocProviders'.
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(),
);

Additional Resources​