Babel (Formerly 6to5) v7.8.0 release notes (2020-01-12)

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Babel (Formerly 6to5) v7.8.0 Release Notes

Release Date: 2020-01-12 // over 4 years ago

v7.8.0 (2020-01-12)

Blog post on the website

🍱 👓 Spec Compliance
- 📜 babel-parser
  - #10980 Disallow private name in object elements and TS type elements (@JLHwung)
  - #10955 LiteralPropertyName should allow BigIntLiteral (@JLHwung)
  - #10953 fix: check await when parsing AsyncArrowBindingIdentifier (@JLHwung)
  - #10947 Fix: TopLevelAwait should respect await identifiers defined in sub scope. (@JLHwung)
  - #10946 fix: Class Field Initializer should not allow await expression as immediate child (@JLHwung)
- 🔌 babel-plugin-proposal-numeric-separator
  - #10938 StringNumericLiteral does not include NumericLiteralSeparator (@JLHwung)
- 🔌 babel-generator, babel-parser, babel-plugin-proposal-private-methods
  - #10456 [parser] Disallow duplicate and undeclared private names (@nicolo-ribaudo)
🍱 💥 Breaking Change
- babel-types
  - #10917 (opt-in) Improve @babel/types with env.BABEL_TYPES_8_BREAKING (@nicolo-ribaudo)
🍱 🚀 New Feature
- babel-standalone
  - #10821 Merge env-standalone to babel-standalone (@JLHwung)
- babel-core
  - #10783 Add babelrc.json support (@yordis)
  - #10903 Add support for babel.config.mjs and .babelrc.mjs (@nicolo-ribaudo)
- babel-compat-data, babel-preset-env-standalone, babel-preset-env
  - #10811 Add optional-chaining and nullish-coalescing to preset-env (@Druotic)
- 🔌 babel-helper-module-transforms, babel-plugin-transform-modules-systemjs
  - #10780 add allowTopLevelThis option to transform-modules-systemjs (@JLHwung)
- 📜 babel-parser
  - #10817 enable optional chaining by default in @babel/parser (@jackisherwood)
- babel-cli
  - #10887 --copy-ignored flag added to CLI (@rajasekarm)
  - #9144 Add --out-file-extension option to babel-cli (@eps1lon)
- 📜 babel-core, babel-generator, babel-parser
  - #10819 Enable nullish coalescing by default in @babel/parser (@layershifter)
- 📜 babel-core, babel-parser
  - #10843 [parser] enable dynamic import by default (@AbdulAli19)
🍱 🐛 Bug Fix
- babel-node
  - #10763 Filename detection should respect short flags (@JLHwung)
- 🔌 babel-plugin-proposal-numeric-separator
  - #10938 StringNumericLiteral does not include NumericLiteralSeparator (@JLHwung)
- babel-preset-env
  - #10790 Use chrome data when android is absent (@JLHwung)
  - #10930 fix: Promise.any requires global.AggregateError (@JLHwung)
- 📜 babel-parser
  - #10944 When reading a new string, U+2028/2029 should correctly set the new column (@JLHwung)
  - #10937 Refactor parseSubscript (@JLHwung)
  - #10901 fix: lost leading comment after named import (@elevatebart)
- Other
- babel-traverse
  - #10949 Override toString in case this function is printed (@jayenashar)
- 🔌 babel-helper-module-transforms, babel-plugin-transform-modules-commonjs
  - #10934 helper-module-transforms: dereference imported template tag (@ajafff)
- babel-traverse, babel-types
  - #10912 Fix parameter expression get binding (@JLHwung)
- babel-core
  - #10914 @babel/core: parse should parse only (@kaicataldo)
- babel-helpers
  - #10902 fix: Object.getOwnPropertySymbols called on non-object (@bassaer)
💅 💅 Polish
- babel-node
  - #9695 Use babel > as prompt in babel-node (@ZYSzys)
- 📜 babel-parser
  - #10906 refactor: remove inClassProperty parser state (@JLHwung)
📚 📝 Documentation
- babel-preset-env
  - #10982 CONTRIBUTING: Update link to plugin-features.js [skip ci] (@andersk)
- Other
  - #10973 Added instructions to fork the repo in order to setup. (@sidntrivedi012)
🍱 🏠 Internal
- babel-preset-env
  - #10983 chore: update corejs fixtures (@JLHwung)
  - #10974 chore: update caniuse-usage Chrome 49 related fixtures (@JLHwung)
  - #10924 Replace custom "findSuggestion" function with "levenary" (@nicolo-ribaudo)
- babel-core
  - #10507 Prepare @babel/core for asynchronicity (@nicolo-ribaudo)
- Other
  - #10979 Reduce false negative cases of typescript parser tests (@JLHwung)
  - #10976 Update Test262, Flow and TS parser tests (@nicolo-ribaudo)
  - #10964 Bump coverage target from 80% to 90% (@nicolo-ribaudo)
  - #10958 Fix recent e2e-vuejs-cli error (@JLHwung)
  - #10919 Add integration test: e2e-vue-cli (@JLHwung)
  - #10943 chore: update test262 (@JLHwung)
  - #10918 chore: refine e2e test scripts (@JLHwung)
  - #10905 chore: separate build-standalone with coverage (@JLHwung)
  - #10898 Move coverage to GitHub actions (@JLHwung)
- babel-compat-data, babel-helper-compilation-targets, babel-preset-env
  - #10899 Extract targets parser and compat data from preset-env (@nicolo-ribaudo)
- 📜 babel-parser
  - #10950 test: add invalid-lone-import test (@JLHwung)
  - #10936 refactor: remove unecessary checkYieldAwaitInDefaultParams (@JLHwung)
  - #10935 refactor: remove unused invalidTemplateEscapePosition tokenizer state (@JLHwung)
  - #10939 TSTypeCastExpression should not be inside call parameters (@JLHwung)
  - #10942 Remove unused parser methods (@JLHwung)
- 📦 Every package
  - #10849 chore: specify package type [skip-ci] (@JLHwung)
↩️ Revert
- babel-cli
  - #10923 fix: minified should not accept optional argument (@JLHwung)
Committers: 17
- Abdul Ali (@AbdulAli19)
- Anders Kaseorg (@andersk)
- Barthélémy Ledoux (@elevatebart)
- Huáng Jùnliàng (@JLHwung)
- Jack Isherwood (@jackisherwood)
- James Beavers (@Druotic)
- Jayen Ashar (@jayenashar)
- Kai Cataldo (@kaicataldo)
- Klaus Meinhardt (@ajafff)
- Nicolò Ribaudo (@nicolo-ribaudo)
- Oleksandr Fediashov (@layershifter)
- Raja Sekar (@rajasekarm)
- Sebastian Silbermann (@eps1lon)
- Siddhant N Trivedi (@sidntrivedi012)
- Tsubasa Nakayama (@bassaer)
- Yordis Prieto (@yordis)
- ZYSzys (@ZYSzys)