Avoid boilerplate code when handling abort signals

< 1 min read

This blog post is part of What’s new in Node.js core? March 2022 edition.

The AbortSignal API in Node.js has a new method: throwIfAborted()

If the abort signal has been triggered, it’ll throw the value of the reason property. This saves writing boilerplate checking and handling code.

Contributed by James M Snell

Example

const ac = new AbortController();

ac.abort();

ac.signal.throwIfAborted();

// > DOMException [AbortError]: This operation was aborted

Also supported by Deno, as well as some web browsers.

Likely to be backported to v16 (Active LTS), but not yet confirmed.

Will be in v18 — initial release 19 Apr 2022, Active LTS starts 25 Oct 2022.