Babel v7.9.0 release notes (2020-03-20)

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Babel v7.9.0 Release Notes

Release Date: 2020-03-20 // about 4 years ago

v7.9.0 (2020-03-20)

Thanks to @andrewdotn, @clshortfuse, @lunaruan, @oliverdunk, @rickbutton, @Taym95 and @Wetinee for their first PRs!

Blog post: https://babeljs.io/blog/2020/03/16/7.9.0

🍱 🚀 New Feature
- 🏗 babel-generator, babel-helper-builder-react-jsx-experimental, babel-helper-builder-react-jsx, babel-plugin-transform-block-scoping, babel-plugin-transform-classes, babel-plugin-transform-function-name, babel-plugin-transform-react-constant-elements, babel-plugin-transform-react-inline-elements, babel-plugin-transform-react-jsx-development, babel-plugin-transform-react-jsx, babel-plugin-transform-regenerator, babel-preset-react, babel-preset-typescript, babel-standalone
  - #11126 Mark transpiled JSX elements as pure (@nicolo-ribaudo)
- 🏗 babel-helper-builder-react-jsx-experimental, babel-helper-builder-react-jsx, babel-plugin-transform-react-jsx-development, babel-plugin-transform-react-jsx-self, babel-plugin-transform-react-jsx, babel-preset-react, babel-standalone
  - #11154 Add experimental version of the babel-plugin-transform-react-jsx transform (@lunaruan)
- babel-compat-data, babel-preset-env
  - #11083 Include preset modules (@nicolo-ribaudo)
  - #10971 Add numeric separator to shippedProposals (@Wetinee)
- 🔌 babel-core, babel-helpers, babel-plugin-proposal-class-properties, babel-plugin-proposal-decorators, babel-plugin-transform-classes, babel-plugin-transform-function-name, babel-plugin-transform-parameters, babel-plugin-transform-react-jsx, babel-plugin-transform-runtime, babel-plugin-transform-typescript, babel-preset-env
  - #8656 Allow extending untranspiled classes (@nicolo-ribaudo)
- 🔌 babel-core, babel-helper-module-transforms, babel-plugin-transform-modules-amd, babel-plugin-transform-modules-commonjs, babel-plugin-transform-modules-systemjs, babel-plugin-transform-modules-umd
  - #11194 Allow defining the moduleIds-related option in the transform plugins (@nicolo-ribaudo)
- 🔌 babel-core, babel-generator, babel-parser, babel-plugin-syntax-record-and-tuple, babel-types
  - #10865 Added support for record and tuple syntax. (@rickbutton)
- 🔌 babel-generator, babel-parser, babel-plugin-transform-flow-strip-types, babel-preset-flow
  - #11178 Implement support for declare on class fields with Flow (@nicolo-ribaudo)
- babel-types
  - #10680 Add cloneDeepWithoutLoc (@Taym95)
- babel-generator
  - #11028 Added jsescOptions to Numeric Literals (@sidntrivedi012)
- 📜 babel-generator, babel-parser, babel-types
  - #11077 Add support for flow's SymbolTypeAnnotation (@existentialism)
- 📜 babel-parser
  - #11117 Parse BigInts by default (@nicolo-ribaudo)
  - #11254 Add estree parsing support for export * as A (@existentialism)
  - #11246 feat: align ID_Start/ID_Continue regex to Unicode 13.0.0 (@JLHwung)
- 🔌 babel-plugin-transform-react-jsx-source, babel-preset-react
  - #11139 feat(react-jsx-source): add columnNumber property (@motiz88)
- 🔌 babel-generator, babel-parser, babel-plugin-transform-typescript, babel-preset-typescript, babel-types
  - #11171 Add import type and export type support to TypeScript (@nicolo-ribaudo)
🍱 🐛 Bug Fix
- 🏗 babel-helper-builder-react-jsx-experimental, babel-helper-builder-react-jsx, babel-helper-validator-identifier, babel-highlight, babel-parser, babel-types
  - #11289 Add @babel/helper-validator-identifier (@JLHwung)
- 🔌 babel-plugin-proposal-optional-chaining
  - #11261 Memoize call expressions in optional chains in loose mode (@oliverdunk)
- 🔌 babel-plugin-transform-react-jsx-self, babel-preset-react
  - #11290 Pass the correct this to JSX's __self with the old plugin (@nicolo-ribaudo)
- 🏗 babel-helper-builder-react-jsx-experimental, babel-plugin-transform-react-jsx-development, babel-plugin-transform-react-jsx
  - #11288 Use the correct this in __self for JSX elements in arrows (@nicolo-ribaudo)
- babel-compat-data, babel-preset-env
  - #11280 Move object-rest-spread after transform-parameters (@JLHwung)
- 🔌 babel-helpers, babel-plugin-transform-for-of, babel-preset-env
  - #11285 Allow for-of on polyfilled or builtin iterables without Symbol support (@nicolo-ribaudo)
  - #11263 Add for-of fallback for arrays in browsers without symbol support (@nicolo-ribaudo)
- 🔌 babel-plugin-proposal-object-rest-spread
  - #11282 fix: object-rest-spread should not transform export array rest (@JLHwung)
- babel-register
  - #11249 Add path separator to @babel/register sourceRoot (@andrewdotn)
- 🔌 babel-core, babel-helpers, babel-plugin-transform-runtime
  - #10575 Create File class for babel helpers (@JLHwung)
- 🔌 babel-helpers, babel-plugin-transform-modules-commonjs, babel-preset-env, babel-runtime-corejs2, babel-runtime
  - #11268 Allow rest/spread on polyfilled or builtin iterables without Symbol support (@nicolo-ribaudo)
- 📜 babel-parser
  - #11148 Allow await when it is not in AsyncArrowHead (@arku)
- 🔌 babel-helpers, babel-plugin-proposal-object-rest-spread, babel-runtime-corejs2, babel-runtime
  - #9794 fix(rest-spread): Do not require Symbol.iterator for strings (@clshortfuse)
- babel-generator
  - #11255 Fix printing edge cases in Nullish Coalescing and Optional Chaining (@jridgewell)
💅 💅 Polish
- 📜 babel-parser
  - #11208 Rephrase parser error message (@JLHwung)
- 🔌 babel-helpers, babel-plugin-transform-destructuring, babel-plugin-transform-modules-commonjs, babel-plugin-transform-spread, babel-preset-env, babel-runtime-corejs2, babel-runtime
  - #11264 Throw better errors for non-iterables when Symbol doesn't exist. (@nicolo-ribaudo)
🍱 🏠 Internal
- 🏗 babel-helper-builder-react-jsx-experimental, babel-helper-builder-react-jsx, babel-helper-validator-identifier, babel-highlight, babel-parser, babel-types
  - #11289 Add @babel/helper-validator-identifier (@JLHwung)
- babel-compat-data, babel-preset-env
  - #11277 Update compat-data (@existentialism)
- babel-core
  - #11276 chore: bump json5 and minimist (@JLHwung)
- babel-types
  - #11250 Add stricter Optional Chain node validation (@jridgewell)
  - #11267 Update Purish aliases (@jridgewell)
- 🔌 babel-helpers, babel-plugin-transform-block-scoping, babel-plugin-transform-for-of, babel-plugin-transform-parameters, babel-plugin-transform-runtime, babel-preset-env
  - #11262 Extract for-of iterator handling to a helper (@nicolo-ribaudo)
- 🔌 babel-core, babel-plugin-proposal-decorators, babel-plugin-proposal-logical-assignment-operators, babel-plugin-proposal-object-rest-spread, babel-plugin-proposal-partial-application, babel-plugin-proposal-pipeline-operator, babel-plugin-transform-parameters, babel-traverse
  - #11260 Support more node types in generateUidBasedOnNode (@jridgewell)
- Other
  - #11259 Remove unused gulp-rename (@existentialism)
Committers: 15
- Andrew Neitsch (@andrewdotn)
- Arun Kumar Mohan (@arku)
- Brian Ng (@existentialism)
- Carlos Lopez (@clshortfuse)
- Guy Bedford (@guybedford)
- Huáng Jùnliàng (@JLHwung)
- Justin Ridgewell (@jridgewell)
- Luna Ruan (@lunaruan)
- Moti Zilberman (@motiz88)
- Nicolò Ribaudo (@nicolo-ribaudo)
- Oliver Dunk (@oliverdunk)
- Rick Button (@rickbutton)
- Siddhant N Trivedi (@sidntrivedi012)
- Taym Haddadi (@Taym95)
- Ye Wei (@Wetinee)