This is because it is used for all internal fields, not just the ones in JSPromise.
<rdar://problem/58751778>
Created attachment 388281 [details] proposed patch.
Comment on attachment 388281 [details] proposed patch. r=me
Comment on attachment 388281 [details] proposed patch. Clearing flags on attachment: 388281 Committed r254846: <https://trac.webkit.org/changeset/254846>
All reviewed patches have been landed. Closing bug.
Created attachment 388289 [details] proposed patch - fixes Tools/Scripts/set-webkit-configuration --reset - addresses some comments
(In reply to Tuomas Karkkainen from comment #6) > Created attachment 388289 [details] > proposed patch > > - fixes Tools/Scripts/set-webkit-configuration --reset > - addresses some comments oops wrong issue.