Download it from: http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts
Changes from May TC39 Review Tentative addition of Class Definitions Syntax and Semantics in 13.5 based upon Maximally Minimal Strawman. NOTE-Classes do not yet have full consensus within TC39 and may not survive. 11.1.5 make super references illegal in method definitions within object literals removed <| and TriangleLiterals reverted methods to only have bracketed function bodies rather than concise bodies Removed Object.isObject Removed String.prototype.toArray Eliminated requirement for buggy daylight savings time adjustment Other changes 5.1.1 , 5.2 Defined “chain production” and implicit algorithm pass through for chain productions. Eliminated unnecessary pass through algorithms Eliminate final remnants of ES1 line number references within algorithm conventions Moved Literal from lexical to syntactic grammar Updated keywords list 10.1.2 /10.4 introduce concept of non-ECMAScript functions and execution contexts for them 11.1.4.2 tweaks to Array Comprehension syntax made it an early error to use a reserved word as a single identifier property definition shorthand added default value initializers to internal elements and properties of destructuring assignment patterns corrected major case statement semantic bug from ES5.1 made YieldExpressions illegal in parameter default value initializers made home object binding of methods contingent upon them actually referencing super added [[ThisMode]] internal property to functions via FunctionCreate to deal with lexical this binding in arrow functions made super references and yield expressions early errors in ProgramBody In Math.sign clarified handling of -0 Added String.prototype HTML wrapping functions to Annex B Merged ES5.2 Annex F into Annex D&E Made Annex F an Informative Summary of Static Semantic algorithms Fixed bugs 340,351-354,356,358-361,364-367,369-376,378-380,382,384-38
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