This bug tracks work to implement ECMAScript Harmony in SpiderMonkey. Presently, that means the "Draft Specification for ES.next (Ecma-262 Edition 6)".
Are weak maps part of Harmony? (bug 547941)
(In reply to Andrew McCreight [:mccr8] from comment #1)
> Are weak maps part of Harmony? (bug 547941)
Morphing to cover only ES6, as things are already being actively deferred to ES7. Someone should file a new metabug for those things.
But mostly I just want the bug alias I always try, that never works. :-)