At
http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts#april_27_2014_draft_rev_24
Changes include:
• Several important bug fixes to Function Declaration Instantiation
• Updated RegExp so that subclasses that over-ride exec semantics don’t
have to also over-ride match/replace/search
• disallowed a line break between ArrowParameters and the ⇒
• Adjust Array.prototype.reverse and Array.prototype.unshift to
eliminate several unnecessary MOP calls that were exposed if the array is a
proxy
• Object.assign now accepts multiple source arguments
• arguments object now have an @@iterator own property
• %TypedArray% constructors now processes iterables as an argument.
• Changed length property value of Symbol, Map, Set, WeakSet, WeakMap
to 1 to be consistent with most other built-in constructors
• Added Annex B item about var declarations in catch clauses that
binding the same name as a catch parameter
• Array.from/typedArray.from now calls filter function with two
arguments.
• Eliminated static semantic rules that made the following an early
error function({x}){var x} or generator(x) {var x}. A var declaration now can
always be the same name as a formal parameter
• Made for (let x in x), etc. a TDZ violation
• further tweaking of super related productions in MemberExpression and
NewExpression
• Bug fix in GetBindingValue to make TDZ work. Accessing an
uninitialized binding always throws and is not conditional on strict mode.
• Started update of Annex A. Lexical grammar updated
• Resolved bugs: 2729, 2727, 2724-2722, 2714-2713, 2711-2706,
2695-2688, 2685, 2681-2660, 2658-2657, 2655-2654, 2652-2649, 2647-2640,
2638-2637, 2635-2613, 2611, 2608-2607, 2605-2604, 2600, 2573, 2566, 2561,
2558-2557, 2551, 2548-2547, 2537, 2528-2526, 2477, 2445, 2443, 2337, 2314,
2154, 2010, 1540, 1114_______________________________________________
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