Summary: Various Constructors length properties should be configurable. Constructors like Map, Set, WeakMap, WeakSet, Promise, TypeError, ... Spec: https://tc39.github.io/ecma262/#sec-ecmascript-standard-built-in-objects > Unless otherwise specified, the length property of a built-in Function object > has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true }.
Created attachment 288880 [details] [PATCH] Proposed Fix
Still reviewable!
Comment on attachment 288880 [details] [PATCH] Proposed Fix Clearing flags on attachment: 288880 Committed r206018: <http://trac.webkit.org/changeset/206018>
All reviewed patches have been landed. Closing bug.