timeout static method
The AbortSignal.timeout() static method returns an AbortSignal
that will automatically abort after a specified time.
The signal aborts with a TimeoutError DOMException on timeout, or with
AbortError DOMException due to pressing a browser stop button (or some
other inbuilt "stop" operation).
This allows UIs to differentiate timeout errors, which typically require
user notification, from user-triggered aborts that do not.
The timeout is based on active rather than elapsed time, and will effectively be paused if the code is running in a suspended worker, or while the document is in a back-forward cache ("bfcache").
To combine multiple signals, you can use AbortSignal.any_static, for
example, to directly abort a download using either a timeout signal or by
calling AbortController.abort.
Implementation
external static AbortSignal timeout(int milliseconds);