Babel (Formerly 6to5) v7.12.7 release notes (2020-11-20)

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Babel (Formerly 6to5) v7.12.7 Release Notes

Release Date: 2020-11-20 // over 3 years ago

v7.12.7 (2020-11-20)

Thanks @fraywing for your first PR!

🍱 👓 Spec Compliance
- 📜 babel-parser
  - #12346 refactor: reorder checkLVal parameters (@JLHwung)
  - #12327 fix: disallow all parenthesized pattern except parsing LHS (@JLHwung)
🍱 🐛 Bug Fix
- 📜 babel-parser
  - #12356 [ts]Fix syntax error for modifier name class methods with type parameters (@sosukesuzuki)
  - #12352 [ts]Set false to default value of TsTypePredicate.asserts (@sosukesuzuki)
  - #12333 Fix syntax error for getter and setter with typescript and estree plugin (@sosukesuzuki)
- 🔌 babel-helper-optimise-call-expression, babel-plugin-proposal-class-properties
  - #12350 Fix: correctly transform this.#m?.(...arguments) (@JLHwung)
- babel-compat-data, babel-preset-env
  - #12340 Fix support for polyfilling Array.prototype.values in core-js@2 (@existentialism)
- 🔌 babel-plugin-transform-modules-systemjs, babel-plugin-transform-parameters, babel-preset-env, babel-traverse
  - #12331 Use the correct context when re-using a cached NodePath (@nicolo-ribaudo)
- 🔌 babel-plugin-proposal-numeric-separator
  - #12311 Adding includes fix for plugin-proposal-numeric-separator (@fraywing)
💅 💅 Polish
- babel-preset-react, babel-preset-typescript
  - #12347 refactor: use option-validator in preset-typescript (@JLHwung)
- babel-types
  - #12341 improve asserts in generated typescript definitions (@zxbodya)
🍱 🏠 Internal
- babel-helper-regex
  - #12377 Archive @babel/helper-regex (@nicolo-ribaudo)
- 🔌 babel-helper-create-regexp-features-plugin, babel-plugin-transform-sticky-regex
  - #12349 refactor: inline @babel/helper-regex usage (@JLHwung)
- babel-core
  - #12288 Don't compile import() in development (@nicolo-ribaudo)
  - #11734 Account for ConfigItem being generated by another copy of Babel (@developit)
- babel-preset-env
  - #12368 Bump caniuse-lite resolutions (@JLHwung)
- Other
  - #12362 chore: fix grammar in bug template (@snitin315)
  - #12357 chore: prompt maintainer to quit make watch before publish (@JLHwung)
  - #12328 chore: remove Node.js 13 from CI (@JLHwung)
- babel-types
  - #11883 feat(babel‑types): Add type definitions for Node assertion methods (@ExE-Boss)
- babel-cli
  - #12322 Use chokidar@2 without fsevents@1 in @babel/cli (@nicolo-ribaudo)
- 📜 babel-parser
  - #12326 Add typings for recordAndTuple parser plugin (@JLHwung)
- babel-traverse
  - #12309 test: add tests about behaviour of replaceWithMultiple (@JLHwung)
🐎 🏃‍♀️ Performance
- babel-traverse
  - #12302 Reduce linear search on list traversing (@JLHwung)
🍱 🔬 Output optimization
- 🔌 babel-helper-member-expression-to-functions, babel-plugin-proposal-class-properties, babel-plugin-proposal-optional-chaining
  - #12291 optimize optional chain when expression will be cast to boolean (@JLHwung)
Committers: 10
- Austin Anderson (@fraywing)
- Bogdan Savluk (@zxbodya)
- Brian Ng (@existentialism)
- ExE Boss (@ExE-Boss)
- Huáng Jùnliàng (@JLHwung)
- Jason Miller (@developit)
- Mateusz Burzyński (@Andarist)
- Nicolò Ribaudo (@nicolo-ribaudo)
- Nitin Kumar (@snitin315)
- Sosuke Suzuki (@sosukesuzuki)