New ES6 draft (Rev23) now available

Sun Apr 6 11:56:49 PDT 2014

This version has undergone major internal restyling and seems to be in good shape for driving to ES6 completion.

All of the algorithms lists have new internal styling.  However, because of the nature of MS Word numbered lists, it is quite likely some some slipped past me where the algorithm steps don't start at 1.  If you see any please report them as a new bug at bugs.ecmascript.org.

Allen

On Apr 6, 2014, at 11:41 AM, Allen Wirfs-Brock wrote:

> The April 5, 2014 ECMAScript 6 Draft Specification (Rev23) is now available at http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts#april_5_2014_draft_rev_23 
> 
> Changes include:
> 
> • Math.clz32 replaces Number.prototype.clz
> • for (let;;) loops get a new scope per iteration
> • Added [Yield] grammar parameter to ArrowFunction (Bug 2504)
> • Added [Yield] grammar parameters for Function/Generator/Class Declarations
> • Added [GeneratorParameter]] parameter to ClassExpression
> • Clarified that certainly early errors don’t apply when processing parenthesized expression cover grammar bug 2506)
> • 11.1.2 clarified the distinction between ES whitespace and Unicode whitespace. Added note that some Unicode white space characters are intentionally
> • Fixed Symbol.prototype.toString Symbol.prototype.valueOf to work correctly when this value is a primitive string value
> • Lookahead let restrictions added: IterationStatement: for (LeftHandSideExpression of AssignmentExpression)... and for (LeftHandSideExpression in Expression)...
> • Lookahead grammar restriction to disambiguate: new super()
> • Reverted default for missing class constructor back to “constructor(...args) {super(...args)} because of bug 2491
> • Refactored identifier syntax/semantics into IdentiferReference, BindingIdentifier, and LabelIdentifier motivated by need to allow unicode escapes in non-keyword yield identifiers
> • Tweaked ordinary call to allocate non-strict mode wrapper objects using callee’s Realm
> • Named %Loader%: Reflect.Loader
> • Named %Realm%: Reflect.Realm
> • Added Reflect.Loader.prototype.@@toStringTag property
> • Provide complete algorithmic definition for RegExp.prototype.replace and RegExp.prototype.search
> • corrected RegExpExec so it correctly translates the match state of full Unicode RegExps back to UTF-16 capture values and endIndex.
> • documented (Annex D) fix to ES5 bug that exposed array updates to integer conversions side-effects
> • Typed Array Indexing: All canonical string numeric values considered to be possible indexes rather than expando property keys, eliminated vestigial spec. language for readonly/frozen typed arrays.
> • Updated Annex B function in block legacy compatibly hack based upon Jan. meeting concensus
> • Updated Function.prototype.toMethod as per Jan. meeting.
> • Updated Promises as per Jan. meeting consensus
> • Switched to “ize” from secondary British “ise” spelling of “initialize” and other words.
> • Resolved bugs: 2598-2597, 2591, 2584-2583, 2581-2578, 2576, 2572-2567, 2563-2562, 2560-2559, 2555, 2552, 2549, 2546, 2525, 2522-2521, 2519-2517, 2515-2514, 2512-2506, 2504, 2501-2500, 2498, 2493-2491, 2489, 2486, 2484, 2482, 2479-2478, 2476-2473, 2471-2469, 2465, 2442-2439, 2435, 2427, 2419-2417, 2415-2413, 2410-2407, 2404-2403, 2398-2395, 2393, 2390, 2370, 2368-2367, 2363-2359, 2352, 2350, 2347, 2343-2342, 2338, 2335, 2331, 2329-2328, 2326-2325, 2322, 2295, 2266, 2256, 2239, 2209, 1910, 1790, 1734, 1483, 1475, 1413-1412, 1263, 1240, 1158, 913, 311, 222
> 
> 
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