Add an abort reason property to AbortSignal (i.e. signal.reason) which is a JavaScript value used when aborting a signal. See https://github.com/whatwg/streams/issues/1165 and https://github.com/whatwg/dom/pull/1027.
<rdar://problem/84921281>
Created attachment 443562 [details] Patch
This patch modifies the imported WPT tests. Please ensure that any changes on the tests (not coming from a WPT import) are exported to WPT. Please see https://trac.webkit.org/wiki/WPTExportProcess
Comment on attachment 443562 [details] Patch Neatly done!
Committed r285428 (243984@main): <https://commits.webkit.org/243984@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 443562 [details].