Riverpod State Management

Priority: P0 (CRITICAL)

Type-safe, compile-time safe reactive state management using riverpod and riverpod_generator.

Structure

lib/
├── providers/ # Global providers and services
└── features/user/
    ├── providers/ # Feature-specific providers
    └── models/    # @freezed domain models

Implementation Guidelines

• •Generator First: Use @riverpod annotations and riverpod_generator. Avoid manual Provider definitions.
• •Immutability: Maintain immutable states. Use Freezed for all state models.
• •Provider Methods:
  • •ref.watch(): Use inside build() to rebuild on changes.
  • •ref.listen(): Use for side-effects (navigation, dialogs).
  • •ref.read(): Use ONLY in callbacks (onPressed).
• •Asynchronous Data: Use AsyncNotifier for complex async logic. Access data via .when() or AsyncValue pattern-matching.
• •Architecture: Enforce 3-layer separation (Data, Domain, Presentation).
• •Linting: Enable riverpod_lint and custom_lint for dependency cycle detection.

Anti-Patterns

• •Building Inside Providers: Don't perform side-effects inside provider initialization.
• •Context Access: Never pass BuildContext into a Notifier/Provider.
• •Dynamic Providers: Avoid local provider instantiation; keep them global.

Related Topics

layer-based-clean-architecture | dependency-injection | testing