New "ES6" Working Draft

[Kam Kasravi]

Were 'const functions' ever accepted into the grammar? See WeakMap for an example.


________________________________
From: Allen Wirfs-Brock <allen at wirfs-brock.com>
To: es-discuss at mozilla.org
Sent: Friday, September 23, 2011 10:21 AM
Subject: New "ES6" Working Draft


I have updated the wiki with my latest working draft of the ES.next ("ESA6") spec.
Word and PDF versions are available.

They can be access from http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts 

Please report issues using https://bugs.ecmascript.org/enter_bug.cgi?product=Draft%20for%206th%20Edition against the "September 23, 2011 Draft"

Changes in this draft are generally marked with "Rev 3"

The change summary is:
	*   Resolved as fixed bugs 137, 140,167, 177, 183,184,185,186,187,188,189,190,191,193,196,196
	* Merged multiple built-in “class” branding internal properties into a single [[NativeBrand]] internal property
	* In 10.2, change environment records so that both mutable and immutable bindings may be in an initialized 
state and must be initialized before use via InitializeBinding
	* In 10.5 added separate algorithm 
for Block declaration instantiation.  Block level declaration 
instantiations now specified.  Function and global level still need to 
be updated to support let and const
	* Added a Declaration production to the grammar and changed StatementList to include both Statement and Declaration
	* Added let and const declarations. var declarations still hoist to function level and must not conflict with a let or const.
	* Hoisting and temporal dead zone for all block scoped declarations
	* Added semantics for destructuring binding pattern.
	* Added appropriate lexical scoping 
for declarations in bodies of switch and try statements.  Note that for 
statements still need work for declarations in for head.
	* Added initializes for individual property level bindings in destructure binding





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