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What is AbortSignal.timeout and how do you cancel async work cleanly?

Q: What is AbortSignal.timeout and how do you cancel async work cleanly?

**TL;DR.** AbortSignal.timeout(ms) returns a signal that **auto-aborts after a delay** — a one-liner deadline you pass to fetch/streams/timers. AbortSignal.any([...signals]) combines several signals into one that fires if **any** does. Together they make timeouts and multi-source cancellation clean and leak-free. timeout(2000) user abort <text class='d-text' x='

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Standardized cancellation for fetch, timers, and streams.

nodejsasyncabortcontrollercancellation

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Deadline + user cancel combined

const user = new AbortController();

const res = await fetch('https://api/data', {
  // aborts if 3s pass OR the user cancels — whichever first
  signal: AbortSignal.any([AbortSignal.timeout(3000), user.signal]),
});

// elsewhere: user.abort()  → cancels immediately

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