daf25af47c
s/compliancy/compliancy/g - seems both correct and consistent with more recent occurrences
288 lines
8.3 KiB
Markdown
288 lines
8.3 KiB
Markdown
# Babel v4 Changelog
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## 4.7.16
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* **Bug Fix**
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* Fix constructor spreading of typed arrays.
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* Fix break/continue/return aliasing of non-loops in block scoping transformer.
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## 4.7.15
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* **Bug Fix**
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* Fix constructor spreading of collections.
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## 4.7.14
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* **Bug Fix**
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* Fix constructor spreading of `Promise`.
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* **Internal**
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* Deprecate remaining playground transformers and abstract references.
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## 4.7.13
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* **Bug Fix**
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* Handle comments on use strict directives.
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* Fix assignment patterns with a left side pattern.
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* **Polish**
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* Special case `this` when doing expression memoisation.
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## 4.7.12
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* **Bug Fix**
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* Deprecate `playground.methodBinding`.
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## 4.7.11
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* **Bug Fix**
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* Fix unicode regexes stripping their unicode flag before being passed on two `regexpu`.
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## 4.7.10
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* **Internal**
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* Deprecate `playground.methodBinding` and `playground.objectGetterMemoization`.
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* **Bug Fix**
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* Fix `inputSourceMap` option. Thanks [@Rich-Harris](https://github.com/Rich-Harris)!
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## 4.7.9
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* **Polish**
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* Allow `inputSourceMap` to be set to `false` to skip the source map inference.
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* Infer computed literal property names.
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* **Bug Fix**
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* Fix nested labeled for-ofs.
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* Fix block scoping `break` colliding with the parent switch case.
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* **Internal**
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* Upgrade `acorn-babel`.
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## 4.7.8
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* **Bug Fix**
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* Fix computed classes not properly setting symbols.
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## 4.7.7
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* **Bug Fix**
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* Fix `types` API exposure.
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## 4.7.6
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* **Bug Fix**
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* Fix non-Identifier/Literal computed class methods.
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* **Polish**
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* Add a fallback if `stack` on an error is unconfigurable.
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* Hoist `esModule` module declarations to the top of the file to handle circular dependencies better.
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## 4.7.5
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* **Bug Fix**
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* Don't remap` break`s to call the iterator return.
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* **Polish**
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* 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.
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## 4.7.4
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* **Bug Fix**
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* Rewrite named function expressions in optional async function transformers.
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* Hoist directives.
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* Remove `Number` from the list of valid `runtime` constructors.
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* **Internal**
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* `spec.typeofSymbol` transformer has been renamed to `es6.symbols`.
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## 4.7.2
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* **New Feature**
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* `"both"` option for `sourceMap`.
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* Add output types to external helpers. Thanks [@neVERberleRfellerER](https://github.com/neVERberleRfellerER)!
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* **Bug Fix**
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* Fix node duplication sometimes resulting in a recursion error.
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* Ignore `break`s within cases inside `for...of`.
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* **Polish**
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* Split up variable declarations and export declarations to allow easier transformation.
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## 4.7.0
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* **Bug Fix**
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* Add `alternate` to list of `STATEMENT_OR_BLOCK` keys.
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* Add support for module specifiers to `t.isReferenced`.
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* **New Feature**
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* Add `inputSourceMap` option.
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* **Polish**
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* Throw an error on different `babel` and `babel-runtime` versions.
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* Replicate module environment for `babel-node` eval.
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* Clean up classes output.
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* **Spec Compliance**
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* Make it illegal to use a rest parameter on a setter.
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## 4.6.6
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* **Bug Fix**
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* Fix incorrect method call in `utility.deadCodeElimination` transformer.
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* Fix `es6.blockScopingTDZ` transformer duplicating binding nodes.
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## 4.6.5
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* **Internal**
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* `useStrict` transformer has been renamed to `strict`.
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## 4.6.4
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* **Bug Fix**
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* Fix `ForOfStatement` not properly inheriting labels.
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* When in closure mode in block scoping transformer, properly check for variable shadowing.
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* **New Feature**
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* New `utility.inlineEnvironmentVariables` and `utility.inlineExpression` transformers.
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## 4.6.3
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* **Bug Fix**
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* Fix `arguments` being incorrectly aliased in arrow function rest parameter optimisation.
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* Make deoptimisation trigger safer.
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* **New Feature**
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* Flow types are now retained when blacklisting the `flow` transformer.
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## 4.6.1
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* **Bug Fix**
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* Fix generators in template directory being transformed.
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* Fix exposure of `util` for plugins.
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## 4.6.0
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* **New Feature**
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* Desugar sticky regexes to a new constructor expression so it can be handled by a polyfill.
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* **Spec Compliance**
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* `for...of` now outputs in a lengthy `try...catch` this is to ensure spec compliance 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.
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* **Polish**
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* Rest parameters that are only referred to via number properties on member expressions are desugared into a direct `arguments` reference. Thanks [@neVERberleRfellerER](https://github.com/neVERberleRfellerER)!
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* `$ babel` no longer exits on syntax errors.
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* **Internal**
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* Upgrade `browserify`.
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* Upgrade `source-map`.
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* Publicly expose more internals.
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## 4.5.5
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* **Polish**
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* Delete old extensions when overriding them in `babel/register`.
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## 4.5.3
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* **Bug Fix**
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* Fix whitelisting logic for helper build script.
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## 4.5.2
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* **New Feature**
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* `returnUsedHelpers` option and add whitelist to `buildHelpers`.
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* **Bug Fix**
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* Fix function arity on self referencing inferred named functions.
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* **Internal**
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* Bump `acorn-babel`.
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* Start converting source to ES6...
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## 4.5.1
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**Babel now compiles itself!**
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## 4.5.0
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* **New Feature**
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* Add `.babelrc` support.
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* **Bug Fix**
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* Move use strict directives to the module formatter bodies.
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* **Internal**
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* Make default `bin/babel` behaviour to ignore non-compilable files and add a `--copy-files` flag to revert to the old behaviour.
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## 4.4.6
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* **Bug Fix**
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* Fix extending a class expression with no methods/only constructor. Thanks [@neVERberleRfellerER](https://github.com/neVERberleRfellerER)!
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* Allow `MemberExpression` as a valid `left` of `ForOfStatement`.
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* **Polish**
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* 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.
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* Crawl all comments for `@jsx` pragma.
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* **Internal**
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* Upgrade `chalk`.
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* Upgrade `core-js`.
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## 4.4.5
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* **Internal**
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* Remove function self reference optimisation.
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## 4.4.4
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* **Bug Fix**
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* Handle inferred function ids to be reassigned and deopt to a slower but working equivalent.
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* Don't unpack array patterns that have more elements than their right hand array expression.
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* **Polish**
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* Improve syntax highlighting in the code frame. Thanks [@lydell](https://github.com/lydell)!
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* **Internal**
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* Upgrade `acorn-babel`.
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## 4.4.3
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* **Bug Fix**
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* Fix `for...of` iterator break returns being duplicated.
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* Only call `return` on the iterator if it exists.
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* **Internal**
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* Rename `selfContained` transformer to `runtime`.
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## 4.4.2
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* **New Feature**
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* Add `moduleId` option for specifying a custom module id.
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## 4.4.0
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* **New Feature**
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* `/*** @jsx NAMESPACE **/` comments are now honored by the `react` transformer.
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* `getModuleName` option.
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* Infer function expression names. Thanks [@RReverser](https://github.com/RReverser)!
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* **Bug Fix**
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* Add proper control flow for tail recursion optimisation.
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* **Internal**
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* Remove useless `format` options and move the `format.compact` option to `format`.
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* **Polish**
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* Newline handling of the code generator has been heavily improved.
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* Code generator now deopts whitespace if the input size is >100KB.
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## 4.3.0
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* **Breaking Change**
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* Remove `commonStandard` module formatter and make it the default behaviour of all the strict module formatters.
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## 4.2.1
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* **Polish**
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* Add auxiliary comment to let scoping closure flow control.
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## 4.2.0
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* **Polish**
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* Use an assignment instead of a define for `__esModule` in loose mode.
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* **Internal**
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* Add error for `eval();` usage and enable strict mode for parsing.
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## 4.1.0
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* **New Feature**
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* Add `BABEL_CACHE_PATH` and `BABEL_DISABLE_CACHE` environment variables.
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* **Internal**
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* Replace many internal util functions with modules. Thanks [@sindresorhus](https://github.com/sindresorhus)!
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## 4.0.2
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* **Bug Fix**
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* Fix generators not properly propagating their internal declarations.
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* **Polish**
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* Update setter param length error message.
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* Use ranges on dependencies.
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## 4.0.0
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* 6to5 is now known as Babel.
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* Global helpers/runtime has now been given the more descriptive name of "external helpers".
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