Individual skill

flutter-concurrency

Use when dealing with asynchrony in Flutter - async/await inside a Cubit, Streams and RxDart, Isolates for heavy work, cancelling an in-flight operation, or choosing between FutureBuilder and BlocBuilder. Triggers on UI freezes, jank, race conditions, or "setState after dispose".

skills/flutter-concurrency/SKILL.md

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Repository stars (not skill ratings): 14
Repository last updated: Oct 30, 2026
License: MIT

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agent-skills Repository topic
ai-coding-assistant Repository topic
claude-code Repository topic
clean-architecture Repository topic
dart Repository topic
flutter Repository topic
design Derived category
design-interface Derived category

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SKILL.mdcore · 11,811 bytes

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You are implementing concurrency for a Flutter feature. Choose the pattern based on the skill argument, if one was given, or on the context of the operation.

## Decision Framework

Pick the right tool for the workload:

| Workload | Pattern | Examples |
|---|---|---|
| I/O (network, storage) | `async/await` | Dio API calls, SharedPreferences, Hive reads |
| CPU < 16 ms | `async/await` | Small list transforms, formatting |
| One-time heavy CPU | `Isolate.run()` | PDF receipt generation, large JSON parsing |
| Continuous background | `Isolate.spawn()` with ports | Payment status polling, data sync |

**Rule of thumb**: if it does NOT block the main isolate for more than one frame (~16 ms), use `async/await`. Otherwise, offload to an isolate.