getify/CAF

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1360 stars · 49 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

CAF (Cancelable Async Flows) is a JavaScript library that wraps function* generators so they behave like async functions while supporting external cancellation via cancellation tokens. It also includes CAG for emulating async generators, with cancellation signals that cascade across chained calls.

Use cases

• cancel an async operation like a timed-out ajax request
• treat generators as cancelable async functions in JavaScript
• cascade a single cancellation signal through a chain of async calls
• abort a promise chain mid-flight when a timeout elapses
• emulate async generators in environments without native support

When to choose

• you need to cancel in-flight async flows, which native async functions can't do
• you want synchronous-looking async logic with cooperative cancellation tokens
• you're on ES2018+ JavaScript in Node or the browser

When to avoid

• you need to support pre-ES2018 environments without transpiling
• your async operations are short-lived and cancellation isn't needed
• you prefer native async/await and AbortController-based cancellation

Facets

library · maturity maintenance

concurrency developer-tools developer-tools web-development browser cross-platform async promises generators cancellation cancel-token javascript nodejs

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