418 lines
13 KiB
Markdown
418 lines
13 KiB
Markdown
# Changelog
|
|
|
|
> **Tags:**
|
|
> - [New Feature]
|
|
> - [Bug Fix]
|
|
> - [Spec Compliancy]
|
|
> - [Breaking Change]
|
|
> - [Documentation]
|
|
> - [Internal]
|
|
> - [Polish]
|
|
|
|
_Note: Gaps between patch versions are faulty/broken releases._
|
|
|
|
See [CHANGELOG - 6to5](CHANGELOG-6to5.md) for the pre-4.0.0 version changelog.
|
|
|
|
## 5.0.12
|
|
|
|
* **Bug Fix**
|
|
* Fix incorrect remapping of module references inside of a function id redirection container.
|
|
|
|
## 5.0.11
|
|
|
|
* **Bug Fix**
|
|
* Fix new `for...of` loops not properly inheriting their original loop.
|
|
* **Internal**
|
|
* Disable scope instance cache.
|
|
* **Polish**
|
|
* Allow comments in `.babelrc` JSON.
|
|
|
|
## 5.0.9
|
|
|
|
* **Polish**
|
|
* Use `moduleId` for UMD global name if available.
|
|
* **Bug Fix**
|
|
* Fix UMD global `module` variable shadowing the `amd`/`common` `module` variable.
|
|
* Fix Flow param type annotation regression.
|
|
* Fix function name collision `toString` wrapper. Thanks [@alawatthe](https://github.com/alawatthe)!
|
|
|
|
## 5.0.8
|
|
|
|
* **Bug Fix**
|
|
* Fix falsy static class properties not being writable.
|
|
* Fix block scoping collisions not properly detecting modules and function clashes.
|
|
* Skip `this` before `super` for derived constructors on functions.
|
|
|
|
## 5.0.7
|
|
|
|
* **New Feature**
|
|
* Add `--ignore` and `--only` support to the CLI.
|
|
* **Bug Fix**
|
|
* Remove `HOMEPATH` environment variable from home resolution in `babel/register` cache.
|
|
* **Internal**
|
|
* Disable WIP path resolution introducing infinite recursion in some code examples.
|
|
* **Polish**
|
|
* Add live binding to CommonJS default imports.
|
|
|
|
## 5.0.6
|
|
|
|
* **Bug Fix**
|
|
* Fix mangling of import references that collide with properties on `Object.prototype`.
|
|
* Fix duplicate declarations incorrectly being reported for `var`.
|
|
|
|
## 5.0.5
|
|
|
|
* **Internal**
|
|
* Upgrade `core-js`.
|
|
* **Bug Fix**
|
|
* Fix arrays not being supported in `util.list`.
|
|
|
|
## 5.0.4
|
|
|
|
* **Polish**
|
|
* Check for top level `breakConfig` in `resolveRc`.
|
|
|
|
## 5.0.3
|
|
|
|
* **Bug Fix**
|
|
* Make relative location absolute before calling `resolveRc`.
|
|
* **Internal**
|
|
* Switch to global UID registry.
|
|
* Add `breakConfig` option to prevent Babel from erroring when hitting that option.
|
|
|
|
## 5.0.1
|
|
|
|
* **Bug Fix**
|
|
* Fix duplicate declaration regression.
|
|
* Fix not being able to call non-writable methods.
|
|
|
|
## 5.0.0
|
|
|
|
* **New Feature**
|
|
* Decorators based on [@wycat's](https://github.com/wycats) [stage 1 proposal](https://github.com/wycats/javascript-decorators).
|
|
* Class property initializers based on [@jeffmo's](https://github.com/jeffmo) [stage 0 proposal](https://gist.github.com/jeffmo/054df782c05639da2adb).
|
|
* Export extensions based on [@leebyron's](https://github.com/leebyron) [stage 1 proposal](https://github.com/leebyron/ecmascript-more-export-from).
|
|
* UMD module formatter now supports globals.
|
|
* Add `es3.runtime`, `optimisation.react.inlineElements` and `optimisation.react.constantElements` transformers.
|
|
* Add stage option that replaces the experimental one.
|
|
* Allow ES7 transformer to be enabled via `optional` instead of only via `stage`.
|
|
* Infer string quotes to use in the code generator.
|
|
* Consider `export { foo as default };` to be the same as `export default foo;`.
|
|
* Add `nonStandard` option that can be set to `false` to remove parser support for JSX and Flow.
|
|
* Add `jsxPragma` option.
|
|
* Automatically generate CLI options based on internal API options.
|
|
* Add support for `.babelrc` on absolute paths.
|
|
* Plugin API!
|
|
* **Internal**
|
|
* Export `options` in browser API.
|
|
* Rewritten parser.
|
|
* Don't block hoist when runtime transformer is enabled in system module formatter.
|
|
* Rewritten the internal traversal and node replacement API to use "paths" that abstracts out node relationships.
|
|
* **Polish**
|
|
* JSX output is now more inline with the official JSX transformer.
|
|
* Hoist block scoping IIFE - this improves memory usage and performance.
|
|
* Better IIFE detection - references are now checked to see if they're referencing the binding we're searching for.
|
|
* Check for import reassignments in constants transformer.
|
|
* Make method definitions with expression bodies illegal.
|
|
* Save register cache on tick instead of `SIGINT`.
|
|
* Enable strict mode on babel-node eval flag.
|
|
* **Bug Fixes**
|
|
* Add support for live bindings. This change also increases the reliablity of export specifier renaming.
|
|
* Add support for super update and non equals assignment expressions.
|
|
* Rename shadow constructor binding in classes.
|
|
* Seed next iteration bindings with previous fresh bindings when reassinging loop block scoped variables.
|
|
* Fix new expression spread referencing the wrong constructor.
|
|
* Call `resolveModuleSource` on dynamic imports.
|
|
* Added `param` to list of duplicate declaration kinds.
|
|
* **Breaking Changes**
|
|
* The Babel playground has been removed.
|
|
* ES7 Abstract References have been removed.
|
|
* Experimental option has been removed in favor of a stage option.
|
|
* Rename `returnUsedHelpers` to `metadataUsedHelpers`.
|
|
|
|
## 4.7.16
|
|
|
|
* **Bug Fix**
|
|
* Fix constructor spreading of typed arrays.
|
|
* Fix break/continue/return aliasing of non-loops in block scoping transformer.
|
|
|
|
## 4.7.15
|
|
|
|
* **Bug Fix**
|
|
* Fix constructor spreading of collections.
|
|
|
|
## 4.7.14
|
|
|
|
* **Bug Fix**
|
|
* Fix constructor spreading of `Promise`.
|
|
* **Internal**
|
|
* Deprecate remaining playground transformers and abstract references.
|
|
|
|
## 4.7.13
|
|
|
|
* **Bug Fix**
|
|
* Handle comments on use strict directives.
|
|
* Fix assignment patterns with a left side pattern.
|
|
* **Polish**
|
|
* Special case `this` when doing expression memoisation.
|
|
|
|
## 4.7.12
|
|
|
|
* **Bug Fix**
|
|
* Deprecate `playground.methodBinding`.
|
|
|
|
## 4.7.11
|
|
|
|
* **Bug Fix**
|
|
* Fix unicode regexes stripping their unicode flag before being passed on two `regexpu`.
|
|
|
|
## 4.7.10
|
|
|
|
* **Internal**
|
|
* Deprecate `playground.methodBinding` and `playground.objectGetterMemoization`.
|
|
* **Bug Fix**
|
|
* Fix `inputSourceMap` option. Thanks [@Rich-Harris](https://github.com/Rich-Harris)!
|
|
|
|
## 4.7.9
|
|
|
|
* **Polish**
|
|
* Allow `inputSourceMap` to be set to `false` to skip the source map inference.
|
|
* Infer computed literal property names.
|
|
* **Bug Fix**
|
|
* Fix nested labeled for-ofs.
|
|
* Fix block scoping `break` colliding with the parent switch case.
|
|
* **Internal**
|
|
* Upgrade `acorn-babel`.
|
|
|
|
## 4.7.8
|
|
|
|
* **Bug Fix**
|
|
* Fix computed classes not properly setting symbols.
|
|
|
|
## 4.7.7
|
|
|
|
* **Bug Fix**
|
|
* Fix `types` API exposure.
|
|
|
|
## 4.7.6
|
|
|
|
* **Bug Fix**
|
|
* Fix non-Identifier/Literal computed class methods.
|
|
* **Polish**
|
|
* Add a fallback if `stack` on an error is unconfigurable.
|
|
* Hoist `esModule` module declarations to the top of the file to handle circular dependencies better.
|
|
|
|
## 4.7.5
|
|
|
|
* **Bug Fix**
|
|
* Don't remap` break`s to call the iterator return.
|
|
* **Polish**
|
|
* Use a different helper for computed classes for much nicer output. Also fixes a bug in symbols being non-enumerable so they wouldn't be set on the class.
|
|
|
|
## 4.7.4
|
|
|
|
* **Bug Fix**
|
|
* Rewrite named function expressions in optional async function transformers.
|
|
* Hoist directives.
|
|
* Remove `Number` from the list of valid `runtime` constructors.
|
|
* **Internal**
|
|
* `spec.typeofSymbol` transformer has been renamed to `es6.symbols`.
|
|
|
|
## 4.7.2
|
|
|
|
* **New Feature**
|
|
* `"both"` option for `sourceMap`.
|
|
* Add output types to external helpers. Thanks [@neVERberleRfellerER](https://github.com/neVERberleRfellerER)!
|
|
* **Bug Fix**
|
|
* Fix node duplication sometimes resulting in a recursion error.
|
|
* Ignore `break`s within cases inside `for...of`.
|
|
* **Polish**
|
|
* Split up variable declarations and export declarations to allow easier transformation.
|
|
|
|
## 4.7.0
|
|
|
|
* **Bug Fix**
|
|
* Add `alternate` to list of `STATEMENT_OR_BLOCK` keys.
|
|
* Add support for module specifiers to `t.isReferenced`.
|
|
* **New Feature**
|
|
* Add `inputSourceMap` option.
|
|
* **Polish**
|
|
* Throw an error on different `babel` and `babel-runtime` versions.
|
|
* Replicate module environment for `babel-node` eval.
|
|
* Clean up classes output.
|
|
* **Spec Compliancy**
|
|
* Make it illegal to use a rest parameter on a setter.
|
|
|
|
## 4.6.6
|
|
|
|
* **Bug Fix**
|
|
* Fix incorrect method call in `utility.deadCodeElimination` transformer.
|
|
* Fix `es6.blockScopingTDZ` transformer duplicating binding nodes.
|
|
|
|
## 4.6.5
|
|
|
|
* **Internal**
|
|
* `useStrict` transformer has been renamed to `strict`.
|
|
|
|
## 4.6.4
|
|
|
|
* **Bug Fix**
|
|
* Fix `ForOfStatement` not proplery inheriting labels.
|
|
* When in closure mode in block scoping transformer, properly check for variable shadowing.
|
|
* **New Feature**
|
|
* New `utility.inlineEnvironmentVariables` and `utility.inlineExpression` transformers.
|
|
|
|
## 4.6.3
|
|
|
|
* **Bug Fix**
|
|
* Fix `arguments` being incorrectly aliased in arrow function rest parameter optimisation.
|
|
* Make deoptimisation trigger safer.
|
|
* **New Feature**
|
|
* Flow types are now retained when blacklisting the `flow` transformer.
|
|
|
|
## 4.6.1
|
|
|
|
* **Bug Fix**
|
|
* Fix generators in template directory being transformed.
|
|
* Fix exposure of `util` for plugins.
|
|
|
|
## 4.6.0
|
|
|
|
* **New Feature**
|
|
* Desugar sticky regexes to a new constructor expression so it can be handled by a polyfill.
|
|
* **Spec Compliancy**
|
|
* `for...of` now outputs in a lengthy `try...catch` this is to ensure spec compliancy in regards to iterator returns and abrupt completions. See [google/traceur-compiler#1773](https://github.com/google/traceur-compiler/issues/1773) and [babel/babel/#838](https://github.com/babel/babel/issues/838) for more information.
|
|
* **Polish**
|
|
* Rest parameters that are only refered to via number properties on member expressions are desugared into a direct `arguments` reference. Thanks [@neVERberleRfellerER](https://github.com/neVERberleRfellerER)!
|
|
* `$ babel` no longer exits on syntax errors.
|
|
* **Internal**
|
|
* Upgrade `browserify`.
|
|
* Upgrade `source-map`.
|
|
* Publicly expose more internals.
|
|
|
|
## 4.5.5
|
|
|
|
* **Polish**
|
|
* Delete old extensions when overriding them in `babel/register`.
|
|
|
|
## 4.5.3
|
|
|
|
* **Bug Fix**
|
|
* Fix whitelisting logic for helper build script.
|
|
|
|
## 4.5.2
|
|
|
|
* **New Feature**
|
|
* `returnUsedHelpers` option and add whitelist to `buildHelpers`.
|
|
* **Bug Fix**
|
|
* Fix function arity on self referencing inferred named functions.
|
|
* **Internal**
|
|
* Bump `acorn-babel`.
|
|
* Start converting source to ES6...
|
|
|
|
## 4.5.1
|
|
|
|
**Babel now compiles itself!**
|
|
|
|
|
|
|
|
## 4.5.0
|
|
|
|
* **New Feature**
|
|
* Add `.babelrc` support.
|
|
* **Bug Fix**
|
|
* Move use strict directives to the module formatter bodies.
|
|
* **Internal**
|
|
* Make default `bin/babel` behaviour to ignore non-compilable files and add a `--copy-files` flag to revert to the old behaviour.
|
|
|
|
## 4.4.6
|
|
|
|
* **Bug Fix**
|
|
* Fix extending a class expression with no methods/only constructor. Thanks [@neVERberleRfellerER](https://github.com/neVERberleRfellerER)!
|
|
* Allow `MemberExpression` as a valid `left` of `ForOfStatement`.
|
|
* **Polish**
|
|
* Throw an error when people try and transpile code with the `@jsx React.DOM` pragma as it conflicts with the custom jsx constructo method detection.
|
|
* Crawl all comments for `@jsx` pragma.
|
|
* **Internal**
|
|
* Upgrade `chalk`.
|
|
* Upgrade `core-js`.
|
|
|
|
## 4.4.5
|
|
|
|
* **Internal**
|
|
* Remove function self reference optimisation.
|
|
|
|
## 4.4.4
|
|
|
|
* **Bug Fix**
|
|
* Handle inferred function ids to be reassigned and deopt to a slower but working equivalent.
|
|
* Don't unpack array patterns that have more elements than their right hand array expression.
|
|
* **Polish**
|
|
* Improve syntax highlighting in the code frame. Thanks [@lydell](https://github.com/lydell)!
|
|
* **Internal**
|
|
* Upgrade `acorn-babel`.
|
|
|
|
## 4.4.3
|
|
|
|
* **Bug Fix**
|
|
* Fix `for...of` iterator break returns being duplicated.
|
|
* Only call `return` on the iterator if it exists.
|
|
* **Internal**
|
|
* Rename `selfContained` transformer to `runtime`.
|
|
|
|
## 4.4.2
|
|
|
|
* **New Feature**
|
|
* Add `moduleId` option for specifying a custom module id.
|
|
|
|
## 4.4.0
|
|
|
|
* **New Feature**
|
|
* `/*** @jsx NAMESPACE **/` comments are now honored by the `react` transformer.
|
|
* `getModuleName` option.
|
|
* Infer function expression names. Thanks [@RReverser](https://github.com/RReverser)!
|
|
* **Bug Fix**
|
|
* Add proper control flow for tail recursion optimisation.
|
|
* **Internal**
|
|
* Remove useless `format` options and move the `format.compact` option to `format`.
|
|
* **Polish**
|
|
* Newline handling of the code generator has been heavily improved.
|
|
* Code generator now deopts whitespace if the input size is >100KB.
|
|
|
|
## 4.3.0
|
|
|
|
* **Breaking Change**
|
|
* Remove `commonStandard` module formatter and make it the default behaviour of all the strict module formatters.
|
|
|
|
## 4.2.1
|
|
|
|
* **Polish**
|
|
* Add auxiliary comment to let scoping closure flow control.
|
|
|
|
## 4.2.0
|
|
|
|
* **Polish**
|
|
* Use an assignment instead of a define for `__esModule` in loose mode.
|
|
* **Internal**
|
|
* Add error for `eval();` usage and enable strict mode for parsing.
|
|
|
|
## 4.1.0
|
|
|
|
* **New Feature**
|
|
* Add `BABEL_CACHE_PATH` and `BABEL_DISABLE_CACHE` environment variables.
|
|
* **Internal**
|
|
* Replace many internal util functions with modules. Thanks [@sindresorhus](https://github.com/sindresorhus)!
|
|
|
|
## 4.0.2
|
|
|
|
* **Bug Fix**
|
|
* Fix generators not properly propagating their internal declarations.
|
|
* **Polish**
|
|
* Update setter param length error message.
|
|
* Use ranges on dependencies.
|
|
|
|
## 4.0.0
|
|
|
|
* 6to5 is now known as Babel.
|
|
* Global helpers/runtime has now been given the more descriptive name of "external helpers".
|