Releases: babel/babel
v6.10.0
6.10.0 (2016-06-11)
New Feature
babel-cli: Add a new option--skip-initial-build(#3489) (@lxe)- Do not compile files before watching
$ babel src -d dest --watch --skip-initial-buildBug Fix
babel-plugin-transform-es2015-block-scoping: Create a new lexical environment inside switch statement blocks for identifier bindings (#3490, T7324) (@jayphelps)
let foo = false;
switch (true) {
default:
let foo = true;
}
alert(foo); // should be falsebabel-types,babel-generator: Support changes in flow parsing in babylon
Add support for a TypeParameter node.
type A<T = string> = T;
class A<S = number, T: ?string = string> {};Documentation
- Clean up language/consistency in CONTRIBUTING.md (#3517) (@kaicataldo)
- Fix up broken links in monorepo.md (#3519) (@koenkivits)
v6.9.2
v6.9.1
6.9.1 (2016-05-29)
Also released 6.9.2 to fix a missing dependency issue for the switch to
regenerator-runtime
Just 2 fixes this release!
- A class property fix (set
thiscorrectly when using async arrow function class properties without a super class). - A fix for
react-constant-elementsplugin to help optimize react more (the plugin wasn't applying to JSX with text).
Also, thanks to @mucsi96 for catching the extraneous code coverage comments we were leaving when publishing!
We are removing/deprecating
babel-regenerator-runtimein favor of depending on the originalregenerator-runtimesince the differences are resolved. Thanks to (@benjamn) for the suggestion to maintain it (and for originally creating it!).
Bug Fix
babel-core
The fix correctly set this: var _this; -> var _this = this;
// input
class MyClass {
myAsyncMethod = async () => {
console.log(this);
}
}
// output
class MyClass {
constructor() {
var _this = this; // _this wasn't being set to `this`
this.myAsyncMethod = babelHelpers.asyncToGenerator(function* () {
console.log(_this);
});
}
}babel-plugin-transform-react-constant-elements,babel-types
JSX with text in it was not being hoisted as other constant elements.
// input
var Foo = React.createClass({
render() {
return <div>Text</div>; // text wasn't considered constant
}
});
// output
var _ref = <div>Text</div>;
var Foo = React.createClass({
render() {
return _ref;
}
});
Internal
v6.9.0
6.9.0 (2016-05-17)
If npm is saying there is no version, then check with
npm dist-tag ls babel-traverserather than the website since the site is cached and mgiht be out of date.
- Update
core-jsfrom2.1.0to2.4.0. Check the releases for more info. - Add a
systemGlobaloption in the systemjs transform.
["transform-es2015-modules-systemjs", {
// outputs scoped_system.register(...)
"systemGlobal": "scoped_system" // defaults to System.register
}]- Bug fixes for
class-propertiesandreact-jsx-sourceplugins.
New Feature
babel-typesbabel-plugin-transform-runtime,babel-polyfill,babel-register,babel-runtimebabel-plugin-transform-es2015-modules-systemjs- #3482 Add
systemGlobaloption to allow changing theSysteminSystem.registerto besystemGlobal. Also moveuse strictwrapping. (@guybedford)
- #3482 Add
Bug Fix
babel-plugin-transform-react-jsx-sourcebabel-plugin-transform-class-propertiesbabel-traversebabel-plugin-transform-es2015-parameters- #3481 also visit
ClassPropertyfor rest param deopt check, fixes T7311. (@jayphelps)
- #3481 also visit
Documentation
- #3498 Fix grammar in CHANGELOG. (@graingert)
Internal
Upgrade to lodash 4.
babel-traversebabel-helper-fixturesbabel-generatorbabel-cli,babel-core,babel-generator,babel-helper-builder-react-jsx,babel-helper-define-map,babel-helper-fixtures,babel-helper-regex,babel-helper-transform-fixture-test-runner,babel-plugin-transform-es2015-block-scoping,babel-plugin-transform-es2015-function-name,babel-plugin-transform-proto-to-assign,babel-preset-es2015,babel-register,babel-runtime,babel-template,babel-traverse,babel-types
Thanks to amasad, dlwalsh, forivall, frantic, graingert, guybedford, jayphelps, jhen0409, loganfsmyth, shuhei, zloirock!
v6.8.1
v6.8.0
6.8.0 (2016-05-02)
Babel is now compiled with Babel 6!
Why this is relevant
TLDR: This fixes the npm deduping issues regarding babel-runtime 5 and 6.
- Because all Babel packages were compiled with Babel 5 and using babel-runtime@5, npm can't dedupe any of them given if a consumer of Babel also added a dependency on babel-runtime@6.
Example:
└─┬ babel-plugin-transform-exponentiation-operator@6.5.0
├─┬ babel-helper-builder-binary-assignment-operator-visitor@6.6.5
│ ├─┬ babel-helper-explode-assignable-expression@6.6.5
│ │ └── babel-runtime@5.8.38
│ └── babel-runtime@5.8.38
├─┬ babel-plugin-syntax-exponentiation-operator@6.5.0
│ └── babel-runtime@5.8.38
└── babel-runtime@5.8.38
Now it should be more like:
└─┬ babel-runtime@6.8.0
└─┬ babel-plugin-transform-exponentiation-operator@6.8.0
├─┬ babel-helper-builder-binary-assignment-operator-visitor@6.8.0
│ ├─┬ babel-helper-explode-assignable-expression@6.8.0
├─┬ babel-plugin-syntax-exponentiation-operator@6.8.0
Related issues: T7252, T7275, T6689, sindresorhus/ava#660, vuejs/vue-loader#96, etc.
Internal
- #3438 Self host on babel6. (@hzoo)
- #3477 turn transform into a simple
forloop. (@mattkrick)
Misc
v6.7.7
Bug Fix
babel-code-framebabel-core- #3422 - Insert
thisreferences inconstructoraftersuper()(@loganfsmyth)
- #3422 - Insert
babel-generator- #3463 - Better sourcemaps for function bodies (@loganfsmyth)
Misc
babel-plugin-transform-es2015-modules-commonjsbabel-generator,babel-types- #3475 - Performance improvements for the code generator (@loganfsmyth)
v6.7.6
babel-traverse- #3458: Revert PR #3433 which introduced https://phabricator.babeljs.io/T7272 (@loganfsmyth)
v6.7.5
Bug Fix
babel-traverse- #3433: Only attempt to rename export declarations, not expressions. (@loganfsmyth)
babel-core/babel-cli- #3448: Make sure input to path.{dir,base}name is a string. (@addaleax)
- #3451: Handle input sourcemaps with mappings to nothing to better support sourcemaps from other tools in a pipeline. (@loganfsmyth)
babel-helper-builder-react-jsxbabel-generator- #3421: Wrap parens around default exports starting with function/class. (@loganfsmyth)
Misc
babel-plugin-transform-runtime- #3258: Expanded documentation (@trodrigues)
- #3441: Improve babel-code-frame. Kill the line-numbers dependency. (@lydell)
babel-traverse- #3442: Remove the old NodePath validation check (@loganfsmyth)
- #3447: Stop traversing when target type is found. (@nkzawa)
v6.7.4
Bug Fix
babel-traverse-
#3419: Keep the context stack balanced to ensure that contexts are properly popped off. (@loganfsmyth)
This bug was causing issues internally because the context system relies on the queues being balanced when deciding what nodes need to be re-processed and which do not. When it becomes imbalanced, nodes can be forgotten or skipped, causing issues like https://phabricator.babeljs.io/T7199 which broke ES6 modules on IE8 with the ES3 transforms.
-
#3420: Invalidate the scope cache when nodes are moved. (@loganfsmyth)
This bug was causing scoping issues in some cases if a node was moved to a new location that was not nested inside a new scope. When this case was hit, the old cached scope would be used, causing issues like https://phabricator.babeljs.io/T7194, https://phabricator.babeljs.io/T6934, and https://phabricator.babeljs.io/T6728.
-
babel-runtimebabel-plugin-transform-react-jsx
Misc
babel-traverse- #3432: Fix a spelling mistake in an error message. (@simeonwillbanks)
Internal
- #3400: Fix an issue that could cause a local clone of Babel to error out if the github repo was in a location with a parent
.babelrcfile. (@callumlocke) - #3431: Fix an issue that was causing the local-development watcher to occasionally rebuild with the incorrect file content. (@loganfsmyth)
- #3436: Update our linting utility version. (@hzoo)
- #3437: Remove an unused dependency. (@hzoo)
babel-core