This is required to implement dynamic properties that can't be added with jsc_class_add_property() for example to implement something like imports object in seed/gjs.
Created attachment 338092 [details] Patch
Comment on attachment 338092 [details] Patch Attachment 338092 [details] did not pass jsc-ews (mac): Output: http://webkit-queues.webkit.org/results/7341696 New failing tests: stress/ftl-get-by-id-getter-exception-interesting-live-state.js.ftl-eager-no-cjit
Committed r230753: <https://trac.webkit.org/changeset/230753>
<rdar://problem/39519419>