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Guidelines and verification checklist for implementing predictable, testable BLoC/Cubit state management in Flutter apps, with recommended patterns and anti-pat
Provides a clear, opinionated workflow and checklist for designing and implementing BLoC/Cubit-based state management in Flutter. It explains how to define events and states (preferably using @freezed), map events to states, connect the BLoC to the UI with BlocBuilder/BlocListener, handle concurrency and async streams, and test flows with blocTest.
Use this skill when writing, reviewing, or testing any BLoC or Cubit implementation in a Flutter codebase — especially when you need predictable state transitions, proper error handling, or to enforce testing standards. It is a P0 (critical) guideline for state design and verification before merging changes.
Useful for coding assistants and review agents that can parse Dart/Flutter code and run unit tests (e.g., Copilot-style/code-aware assistants, Codex/Code models).
This skill has not been reviewed by our automated audit pipeline yet.
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