Babel v7.0.0-beta.3 release notes (2017-10-15)

« Changelog History

Babel v7.0.0-beta.3 Release Notes

Release Date: 2017-10-15 // over 6 years ago

⚡️ > Update from beta.2 -> beta.3 looks like this: https://github.com/babel/babel/pull/6488

🚀 > Wanted to get this release out first, but next release we should make necessary breaking changes for later: using peerDeps on babel-core so that people don't install incompatible versions of plugins/babel itself and get weird errors reported, using scoped npm packages like @babel/core due to issues with npm squatting, knowing what is an official package or not, etc, and renaming proposal plugins to babel-plugin-proposal-x instead of babel-plugin-transform-x

📦 > Note: don't use ^ in your dependencies when using a beta. It can still break between (we should try not to do it but it can), so pin all the packages
- Pipeline Operator: (a |> b), also in the Stage 1 Preset
- Throw Expressions: (() => throw 'hi'), also in Stage 2
- 🔌 Preset/Plugin options are available top level rather than previously only in the visitor state
- 🛠 Many fixes
:boom: Breaking Change
- babel-helper-remap-async-to-generator
  - #6451 Drop old compatibility if statement targeting [email protected] and earlier. (@Andarist)
- babel-core
  - #6350 Cache plugins and presets based on their identity. (@loganfsmyth)
- babel-core, babel-helper-module-imports, babel-traverse
  - #6343 Remove core .metadata properties and resolveModuleSource. (@loganfsmyth)
:rocket: New Feature
- babel-template
  - #5001 Extend babel-template to work as a template tag. (@Kovensky)
- 🔌 babel-core, babel-generator, babel-plugin-syntax-pipeline-operator, babel-plugin-transform-pipeline-operator, babel-preset-stage-1, babel-template, babel-traverse, babel-types
  - #6335 Pipeline operator. (@jridgewell)
- babel-cli
  - #6232 Add --include-dotfiles option to babel-cli. (@existentialism)
- 🔌 babel-plugin-transform-es2015-modules-commonjs, babel-plugin-transform-es2015-template-literals
  - #6327 Annotating taggedTemplateLiteral calls as #__PURE__. (@Andarist)
- babel-standalone
  - #6322 Add transform-new-target and missed stage-3 plugins to babel-standalone.. (@yavorsky)
- 🔌 babel-core, babel-generator, babel-plugin-syntax-throw-expressions, babel-plugin-transform-throw-expressions, babel-preset-stage-2, babel-template, babel-traverse, babel-types
  - #6325 Add throw expressions. (@jridgewell)
:bug: Bug Fix
- 🔌 babel-plugin-transform-function-bind
  - #6481 Don't insert duplicated nodes when transforming function bind. (@nicolo-ribaudo)
- 🔌 babel-plugin-transform-class-properties
  - #6466 Evaluate computed class props only once. (@Qantas94Heavy)
- 🔌 babel-plugin-transform-do-expressions, babel-traverse
  - #6372 Fix the issue #6331. (@wcastand)
- babel-core
  - #6377 Fix "module" external helpers output. (@loganfsmyth)
- 🔌 babel-plugin-transform-es2015-destructuring
  - #6374 Fixed reusing node in destructuring plugin, which caused caching issu…. (@Andarist)
- 🔌 babel-plugin-transform-es2015-parameters, babel-traverse
  - #6351 Requeueing sometimes has wrong scope. (@jridgewell)
- babel-traverse
  - #6354 unshiftContainer seems to incorrectly handle function params #6150. (@daft300punk)
- 🔌 babel-plugin-check-es2015-constants, babel-plugin-transform-class-properties, babel-plugin-transform-es2015-block-scoping, babel-plugin-transform-es2015-parameters, babel-traverse
  - #6337 Path#ensureBlock keeps path context. (@jridgewell)
- babel-generator
  - #6334 Fix generator missing parens on Flow union types. (@existentialism)
💅 :nail_care: Polish
- babel-traverse
  - #6349 Remove debug closures. (@jridgewell)
📚 :memo: Documentation
- Other
  - #6439 [skip ci] fix typo in README.md. (@gberaudo)
- babel-preset-typescript
  - #6365 note about .ts extension in the preset [skip ci]. (@hzoo)
- babel-helper-module-imports
  - #6323 add docs for other import syntax [skip ci]. (@hzoo)
:house: Internal
- 👕 .eslintrc
  - #6457 Use no-undefined-identifier eslint rule in packages. (@existentialism)
- 🔌 babel-plugin-transform-async-to-module-method, babel-plugin-transform-class-properties, babel-plugin-transform-es2015-arrow-functions, babel-plugin-transform-es2015-classes, babel-plugin-transform-es2015-computed-properties, babel-plugin-transform-es2015-for-of, babel-plugin-transform-es2015-modules-amd, babel-plugin-transform-es2015-modules-commonjs, babel-plugin-transform-es2015-modules-systemjs, babel-plugin-transform-es2015-modules-umd, babel-plugin-transform-es2015-parameters, babel-plugin-transform-es2015-spread, babel-plugin-transform-es2015-template-literals, babel-plugin-transform-optional-chaining, babel-plugin-transform-react-constant-elements, babel-plugin-transform-react-jsx, babel-plugin-transform-runtime
  - #6381 centralize plugin options. (@RusinovAnton)
- babel-cli
  - #6440 Misc. (@hzoo)
- babel-core
  - #6435 Always pass an options object to presets and plugins.. (@loganfsmyth)
  - #6326 Preserve object identity when loading config, for improved future caching.. (@loganfsmyth)
- babel-helpers, babel-runtime
  - #6366 Fix runtime helpers generator. (@nicolo-ribaudo)
- ✅ babel-cli, babel-core, babel-helper-transform-fixture-test-runner, babel-template, babel-traverse
  - #6359 Split up babel-core's File class and add Flowtype annotations. (@loganfsmyth)
- babel-core, babel-helpers, babel-runtime
  - #6254 Add support for helper dependencies. (@nicolo-ribaudo)
- 🔌 babel-core, babel-generator, babel-helper-replace-supers, babel-messages, babel-plugin-check-es2015-constants, babel-plugin-transform-es2015-classes, babel-plugin-transform-es2015-for-of, babel-traverse
  - #6356 Remove babel-messages and inline the usages. (@JeromeFitz)
- 🔌 babel-helper-module-imports, babel-plugin-transform-decorators, babel-plugin-transform-typescript
  - #6355 Bump prettier. (@existentialism)
- Other
  - #6348 remove inline plugin from Babel's .babelrc. (@xjlim)
- babel-traverse
  - #6349 Remove debug closures. (@jridgewell)
- babel-standalone
  - #6338 transform-es2015-template-literals doesn't have spec mode anymore, ch…. (@Andarist)