ES6 Main Tracking Issue

[mikesherov]

2.0

• arrow functions
• default function parameters ( ES6 feature: Default Parameters: tracking Issue #1005)
• binary/octal integer literals
• shorthand object property notation
• method definitions (in object literal)
• regular expression flags
• extended unicode escapes in strings, templates, and regexps "\u{123456}"
• implicit octals

2.1 (#1067)

• block-scoped variable declarations (let/const) (ES6 feature: Let and Const Declaration #1065)
• disallow initialiser in for-in head (let / const / var)
• rest parameters (ES6 feature: Rest Parameters: tracking Issue #1011)
• computed property names (ES6 feature: computed property name #1037)
• remove duplicate object property (besides proto) strict mode restriction (ES6 feature: computed property name #1037)
• classes (ES6 feature: Classes: tracking Issue #1001)

2.2 (#1161)

• template strings (ES6 Feature: Template Strings: tracking Issue #1074)
• destructuring (ES6 feature: Destructuring: Tracking Issue #1045)
• import and export declarations (ES6 feature: Modules: Tracking Issue #1000)
• super calls and super member accesses (Implement Super Node #1147)

2.3 (#1189)

• generator functions + yield (ES6 feature: Generator: Tracking Issue #1033)

2.4 (#1202)

• for-of (ES6 feature: Iteration using for of #1047)
• spread arguments (ES6: Spread Element (for function argument) #1169)

2.5 (#1246)

• meta property (ES6 feature: Meta property #1203)
• yield: keyword vs identifier (Generator: correctly distinguish yield as identifier vs keyword #1186)
• identifier name (ES6 Updated identifier name #1232 and Recognize identifier characters from the Supplementary Multilingual Plane #1244)
• await (Treat await as a reserved word when parsing a module #1234)

[ariya]

Also, take a look at https://github.com/jquery/esprima/blob/master/ChangeLog. 2.0 already has few more stuff there.

[mikesherov]

@ariya, does this look right now?

[ariya]

There was also implicit octal in 2.0. I personally prefer this term (taken from V8), rather than noctal (which seems to be a bit made-up and has no precedent anywhere else). /cc @ikarienator

[ariya]

2.1 partially triggers an early errors for initializer in for-in (only for let and const, not yet for var).

[caridy]

2.2: import and export declarations were implemented here: #1149