117 lines
4.0 KiB
Markdown
117 lines
4.0 KiB
Markdown
# Changelog
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> **Tags:**
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> - [Breaking Change]
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> - [Spec Compliancy]
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> - [New Feature]
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> - [Bug Fix]
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> - [Documentation]
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> - [Internal]
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> - [Polish]
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_Note: Gaps between patch versions are faulty, broken or test releases._
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See the [Babel Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md) for the pre-6.8.0 version changelog.
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## 6.8.4 (2016-07-06)
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### Bug Fixes
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- Fix the location of params, when flow and default value used ([#68](https://github.com/babel/babylon/pull/68)) @danez
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## 6.8.3 (2016-07-02)
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### Bug Fixes
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- Fix performance regression introduced in 6.8.2 with conditionals ([#63](https://github.com/babel/babylon/pull/63)) @danez
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## 6.8.2 (2016-06-24)
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### Bug Fixes
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- Fix parse error with yielding jsx elements in generators `function* it() { yield <a></a>; }` ([#31](https://github.com/babel/babylon/pull/31)) @eldereal
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- When cloning nodes do not clone its comments ([#24](https://github.com/babel/babylon/pull/24)) @danez
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- Fix parse errors when using arrow functions with an spread element and return type `(...props): void => {}` ([#10](https://github.com/babel/babylon/pull/10)) @danez
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- Fix leading comments added from previous node ([#23](https://github.com/babel/babylon/pull/23)) @danez
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- Fix parse errors with flow's optional arguments `(arg?) => {}` ([#19](https://github.com/babel/babylon/pull/19)) @danez
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- Support negative numeric type literals @kittens
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- Remove line terminator restriction after await keyword @kittens
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- Remove grouped type arrow restriction as it seems flow no longer has it @kittens
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- Fix parse error with generic methods that have the name `get` or `set` `class foo { get() {} }` ([#55](https://github.com/babel/babylon/pull/55)) @vkurchatkin
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- Fix parse error with arrow functions that have flow type parameter declarations `<T>(x: T): T => x;` ([#54](https://github.com/babel/babylon/pull/54)) @gabelevi
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### Documentation
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- Document AST differences from ESTree ([#41](https://github.com/babel/babylon/pull/41)) @nene
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- Move ast spec from babel/babel ([#46](https://github.com/babel/babylon/pull/46)) @hzoo
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### Internal
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- Enable skipped tests ([#16](https://github.com/babel/babylon/pull/16)) @danez
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- Add script to test latest version of babylon with babel ([#21](https://github.com/babel/babylon/pull/21)) @danez
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- Upgrade test runner ava @kittens
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- Add missing generate-identifier-regex script @kittens
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- Rename parser context types @kittens
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- Add node v6 to travis testing @hzoo
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- Update to Unicode v9 ([#45](https://github.com/babel/babylon/pull/45)) @mathiasbynens
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## 6.8.1 (2016-06-06)
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### New Feature
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- Parse type parameter declarations with defaults like `type Foo<T = string> = T`
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### Bug Fixes
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- Type parameter declarations need 1 or more type parameters.
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- The existential type `*` is not a valid type parameter.
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- The existential type `*` is a primary type
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### Spec Compliancy
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- The param list for type parameter declarations now consists of `TypeParameter` nodes
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- New `TypeParameter` AST Node (replaces using the `Identifier` node before)
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```
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interface TypeParameter <: Node {
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bound: TypeAnnotation;
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default: TypeAnnotation;
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name: string;
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variance: "plus" | "minus";
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}
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```
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## 6.8.0 (2016-05-02)
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#### New Feature
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##### Parse Method Parameter Decorators ([#12](https://github.com/babel/babylon/pull/12))
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> [Method Parameter Decorators](https://goo.gl/8MmCMG) is now a TC39 [stage 0 proposal](https://github.com/tc39/ecma262/blob/master/stage0.md).
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Examples:
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```js
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class Foo {
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constructor(@foo() x, @bar({ a: 123 }) @baz() y) {}
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}
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export default function func(@foo() x, @bar({ a: 123 }) @baz() y) {}
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var obj = {
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method(@foo() x, @bar({ a: 123 }) @baz() y) {}
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};
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```
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##### Parse for-await statements (w/ `asyncGenerators` plugin) ([#17](https://github.com/babel/babylon/pull/17))
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There is also a new node type, `ForAwaitStatement`.
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> [Async generators and for-await](https://github.com/tc39/proposal-async-iteration) are now a [stage 2 proposal](https://github.com/tc39/ecma262#current-proposals).
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Example:
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```js
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async function f() {
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for await (let x of y);
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}
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```
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