Flutter State Review

When to use this skill

• •When reviewing Flux or UI code.
• •When fixing bugs related to UI not updating.
• •When refactoring "Spaghetti code" in Widgets.

How to use it

1. •Ban Logic in UI:
   • •Ensure build() methods only contain BlocBuilder, BlocListener, or simple rendering logic.
   • •VIOLATION: Calling FirebaseFirestore.instance... directly inside a Widget.
   • •VIOLATION: Calling setState for business logic state.
2. •Review Bloc Dependencies:
   • •Blocs should depend on Repositories, not data sources directly.
   • •Repositories should handle the data fetching/stream subscription.
3. •Stream Safety:
   • •Verify that data streams are properly managed (listened to in the Data layer, yielded as states in the Bloc).
   • •Ensure streams are closed/cancelled when not needed (though Bloc usually handles this for subscriptions it manages).
4. •One-Way Data Flow:
   • •Action (UI) -> Event (Bloc) -> New State (Bloc) -> Rebuild (UI).
   • •Ensure no side-effects bypass this flow.