Explains all. Thanks. One other thing not mentioned is the difficulty in VM optimization for functions implementing that property. On Oct 14, 2014 8:21 PM, "Rick Waldron" <[email protected]> wrote:
> > > On Tuesday, October 14, 2014, Isiah Meadows <[email protected]> wrote: > >> >> > From: Allen Wirfs-Brock <[email protected]> >> > To: es-discuss list <[email protected]> >> > Cc: >> > Date: Tue, 14 Oct 2014 15:31:48 -0700 >> > Subject: A new ES6 draft, Rev28 >> > >> > ES6 Draft 29, >> http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts#october_14_2014_draft_rev_28 >> >> > >> > This includes the major work items from the September TD39 meeting. >> > >> > Changes include: >> > >> > Removed loader pipeline and Reflect.Loader API (functionality being >> transfered to sperate specification) >> > Stream-lined module linking semantics for declarative modules. >> > Added Module request task >> > Removed Module declaration >> > Update Import declaration to include module imports. >> > Updated default export syntax and semantics to support export of >> anonymous default functions >> > Added Module Environment Records and indirect (import) bindings >> > Added Module evaluation jobs >> > Added Host hooks for module name normalization and source access. >> > Finished up ES6 eval function semantics >> > Eliminated unused abstract operations, PromiseAll, PromiseCatch, >> PromiseThen >> > Modified Promise.all so specification internally uses a List instead of >> an Array to accumulate result promises >> > Added @@iterator property to %IteratorPrototype% >> > Added requirement that the object returned by ordinary object >> [[Enumerate]] must inherit from %IteratorPrototype% >> > Removed own @@iterator properties from various standard iterators, they >> now inherit it from %IteratorPrototype% >> >> I was rather confused about this in the spec. Thankfully, it's fixed. >> >> > Updated ToPropertyKey to accept Symbol wrapper objects, similar to how >> other primitive coercion abstract operations handle wrapper objects >> > ToNumber now recognizes binary and octal string numeric values. >> > Significant fix to destructuring assignment where the rest assignment >> target is itself a destructuring pattern >> > Changed ordinary object creation to dispatch object allocation through >> [[CreateAction]] internal slot instead of @@create method. >> > Converted all @@create methods into CreateAction abstract operations. >> > Eliminated Symbol.create and @@create. >> >> Where's the discussion? >> > https://github.com/rwaldron/tc39-notes/blob/master/es6/2014-09/sept-24.md > > Enjoy ;) > > Rick > > >> > super without an immediately following property specifier is now >> illegal in all MethodDefinition (no more implicit super using current >> method name) >> > super in a constructor call expression references the constructor’s >> [[Prototype]] >> > Function.prototype.toMethod no longer takes an optional name argument >> > Updated Annex A Grammars to match ES6 >> > Resolved bugs: 3278-3273, 3271-3270, 3268, 3266, 3263-3262, 3260-3258, >> 3255-3254, 3252, 3247, 3245, 3243-3238, 3236-3231, 3228-3224, 3222-3221, >> 3218, 3216-3215, 3211-3207, 3204-3162, 3159-3151, 3149, 3144, 3132, >> 3130-3129, 3123, 3119, 3106, 3104, 3094, 3013, 2999, 2996, 2972, 2947, >> 2852, 2834, 2820-2819, 2812, 2792, 2726, 2684, 2683, 2524, 2341, 2302, >> 2039, 1788, 1608, 1595, 1111, 949, 921, 502, 164, 151 >> > There may be an end to this tunnel... >> >
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