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CAF (Cancelable Async Flows) is a small utility that brings cooperative cancellation to JavaScript async workflows. It wraps async generators or promise-returning functions so they can respond to a cancel signal and halt work early, preventing wasted CPU and stray side effects. The library encourages a disciplined pattern: pass a token into your task, periodically check it, and unwind gracefully when cancellation is requested. This approach avoids brittle timeouts and “fire-and-forget” leaks by making cancellation a first-class concern. CAF is framework-agnostic and pairs well with fetch, timers, or custom async primitives, giving you a consistent contract for stopping in-flight operations. The result is safer UI interactions and services that don’t keep doing work the user no longer needs.
Features
- Cancelable wrappers for async generators and promise workflows
- Cooperative signaling token that tasks can check and honor
- Graceful teardown of timers, pending I/O, and side effects
- Works with fetch, streams, or any await-driven code
- Avoids race conditions and “stale response” bugs in UIs
- Small API designed for explicit, testable cancellation logic
Project Samples
