# STEPS TO REPRODUCE: 1. turn on Web Animations 2. inspect any page 3. evaluate `document.body.animate([])` 4. expand the result `Animation` => both `finished` and `ready` show "TypeError: InjectedScriptHost.isPromiseRejectedWithNativeGetterTypeError first argument must be a Promise" instead of a `Promise`
Created attachment 386078 [details] Patch
Comment on attachment 386078 [details] Patch r=me, please add more infos to changelog per our conversation.
Created attachment 386152 [details] Patch
Comment on attachment 386152 [details] Patch Clearing flags on attachment: 386152 Committed r253801: <https://trac.webkit.org/changeset/253801>
All reviewed patches have been landed. Closing bug.
<rdar://problem/58096544>
Nice!