new ES6 spec. draft now available

# Allen Wirfs-Brock (12 years ago)

harmony:specification_drafts#august_23_2013_draft

Changes include:

  • Added Number.isSafeInteger
  • Added Number.MAX_SAFE_INTEGER
  • Removed: Number.MAX_INTEGER
  • Removed: Number.toInteger
  • Define all parts of a class definition to be strict code
  • ‘length’ property of program defined functions have the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true }.
  • Computed property names in object literals and class definitions can be strings or symbols
  • TypedArray objects are made non-extensible when they are allocated.
  • Added ToLength abstract operation. Generic Array methods use ToLength and are not limited to Uint32 lengths.
  • keys, and entries interators over Arrays and Typed Arrays return numbers for their key values.
  • Map/WeakMap constructor no longer explicitly looks for an ‘entires’ method on iterable arg. Always uses @@iterator.Throws if an iteration item is not an object.
  • Added with blacklist (@@unscopable) support to withStatement and Object Environment Records
  • Added Array.prototype[@@unscopable) with value ["find", "findIndex", "fill", copyWithin", "entries", "keys", "values"]
  • Destructuring to a object/array pattern throws if the value/default value is not an object
  • Destructuring throws if a corresponding source property does not exist and a default value is not provided
  • Eliminated NoIn alternative expression grammar because they are unnecessary after eliminating for-in binding initializer expression
  • Added Array.prototype.fill, Array.prototype.copyWithin, %TypedArray%.prototype.fill, %TypedArray%.prototype.copyWithin
  • Updated definition of Function.prototype.toString
  • Added Math.roundFloat32 (formerly aka Math.toFloat32)
  • Updated Array.prototype.splice to match web reality when called with 1 argument (see bug 429)
  • {["__proto__"]: obj defines a data property named "proto" rather than setting the object’s [[Prototype]] internal data property
  • Using a computed property name in a strict mode object literal or class definition to define a property that already exists is a runtime error
  • Made DataView buffer, byteLength, byteOffset prototype accessor properties just like they are for Typed Array
  • Specified all %TypedArray%.prototype methods
  • Array.prototype.map, filter, slice, splice when used iwth array subclasses creates results arrays of the same subclass
  • foo.__proto__ = 1234, etc. and {__proto__: 123} no longer throws.
  • Resolved Bugs: 1800, 1796, 1794, 178-1783, 1779, 1777-1771, 1769, 1767-1763, 1761-1752, 1750-1735, 1733, 1731, 1729, 1727-1717, 1715, 1713-1705, 1703-1661, 1659-1634, 1632-1626, 1624, 1622-1620, 1618, 1616-1609, 1607, 1605-1602, 1599, 1596, 1594, 1592, 1590, 1588-1586, 1583-1581, 1579, 1575, 1560, 1464, 1257, 788, 733, 716, 701, 429, 224, 175, 146
# Michael Dyck (12 years ago)

On 13-08-23 08:51 AM, Allen Wirfs-Brock wrote:

harmony:specification_drafts#august_23_2013_draft

When I view the PDFs in Adobe Reader, most of the body text is rendered in Adobe Sans MM, which is what it substitutes when it can't locate the original font.

Original fonts appear to be: Arial Arial,Bold Arial,BoldItalic Arial,Italic Helvetica Helvetica,Bold Helvetica,Italic Times New Roman Times New Roman,Bold Times New Roman,Italic

Actually, it looks like there versions of these fonts embedded in the PDF, but I guess Reader can't use them? They're marked: Type: TrueType (CID) Encoding: Identity

# Jason Orendorff (12 years ago)

The HTML version is now available: people.mozilla.com/~jorendorff/es6-draft.html

As always, bug reports are greatly appreciated. Send me email, or better yet, file them here: jorendorff/es-spec-html/issues