Phase 2 Notes

• Class

  • Cover more syntax errors defined in https://people.mozilla.org/~jorendorff/es6-draft.html#sec-class-definitions

• Computed Property Names

  • Generator versions of all tests
  • Integer literals as computed property key names: test/language/computed-property-names/computed-property-names-double-name.js
    • Binary
    • Hexadecimal
    • Octal
  • "prototype" property in class body

• generators

  • Syntax tests for yield * formations
  • Semantics for return prototype method (not yet implemented in V8)

• for..of

  • continue/break/return from a finally block
  • https://github.com/tc39/test262/pull/184#commitcomment-10003361

• Native iterators

  • Subclass prototypes. V8 incorrectly asserts that they should be Object.prototype, while the spec states that they should be IteratorPrototype (see 23.2.5.2 The %SetIteratorPrototype% Object for example). Issue filed against V8
  • next methods should throw a TypeError if the context does not have all the internal slots of the appropriate iterator interface (e.g. 22.1.5.2.1 %ArrayIteratorPrototype%.next( ), step 3). Specifically test this is the case even when such an object is in the context's prototype chain. See this comment for context.

• Symbol

  • Well-Known Symbols
  • Symbol.for
  • Symbol.keyFor
  • Object.getOwnPropertySymbols
  • Object.getOwnPropertyNames
    • Doesn't return symbols
  • Object.getOwnPropertyDescriptor
  • Object.keys
    • Doesn't return symbols
  • Object.defineProperty
    • Accessors
      • default
      • writable
      • configurable

• typeof (https://people.mozilla.org/~jorendorff/es6-draft.html#sec-typeof-operator-runtime-semantics-evaluation)

  • boolean
  • function
  • number
  • object
  • string
  • symbol
  • undefined

• String

  • raw method lacks meaningful tests

• Annex E

  • https://people.mozilla.org/~jorendorff/es6-draft.html#sec-additions-and-changes-that-introduce-incompatibilities-with-prior-editions

• 22.2.1 The %TypedArray% intrinsic object

• Write proposal for %ArgumentsPrototype%

  • Model after %IteratorPrototype%