@babel/plugin-proposal-optional-chaining

v7.21.0 (2023-02-20)

:rocket: New Feature

• babel-core, babel-helper-create-class-features-plugin, babel-plugin-proposal-class-properties, babel-plugin-proposal-private-methods, babel-plugin-proposal-private-property-in-object
  • #15435 feat: Implement privateFieldsAsSymbols assumption for classes (@fwienber)
• babel-helper-create-regexp-features-plugin, babel-plugin-proposal-regexp-modifiers, babel-standalone
  • #15226 feat: Support regexp modifiers proposal (@liuxingbaoyu)
• babel-cli, babel-core, babel-generator, babel-plugin-transform-destructuring, babel-plugin-transform-modules-commonjs, babel-plugin-transform-react-jsx, babel-traverse
  • #15022 feat: Generate sourcemaps of friendly call frames (@liuxingbaoyu)
• babel-parser, babel-types
  • #15384 [ts] Support const modifier in type parameters (@nicolo-ribaudo)
• babel-generator, babel-helpers, babel-parser, babel-plugin-proposal-decorators, babel-plugin-syntax-decorators, babel-runtime-corejs2, babel-runtime-corejs3, babel-runtime
  • #15405 Implement decorators as presented at 2023-01 TC39 meeting (@nicolo-ribaudo)
• babel-parser
  • #15114 Parser option to allow new.target outside functions (@overlookmotel)
  • #15320 Add annexb: false parser option to disable Annex B (@nicolo-ribaudo)
• babel-core
  • #15283 feat: Support .cts as configuration file (@liuxingbaoyu)
• babel-generator, babel-parser, babel-plugin-transform-typescript
  • #15381 [ts] Support export type * from (@nicolo-ribaudo)

:bug: Bug Fix

• babel-plugin-transform-typescript
  • #15379 [ts5.0] Better inlining of constants in enums (@liuxingbaoyu)
• babel-core
  • #15366 handling circular/shared structures in deep-clone (@azizghuloum)
• babel-helper-create-class-features-plugin, babel-plugin-proposal-class-properties, babel-plugin-proposal-class-static-block, babel-plugin-proposal-private-methods, babel-plugin-transform-classes, babel-plugin-transform-new-target
  • #15406 Preserve class elements comments in class transform (@JLHwung)
• babel-parser, babel-plugin-transform-flow-comments, babel-plugin-transform-flow-strip-types, babel-types
  • #15414 [ts] Fix restrictions for optional parameters (@nicolo-ribaudo)

:nail_care: Polish

• babel-parser
  • #15400 polish: improve "await as identifier" error in modules (@JLHwung)

:house: Internal

• babel-core
  • #15137 Improve CJS compat with ESM-based @babel/core (@nicolo-ribaudo)

:microscope: Output optimization

• babel-plugin-transform-typescript
  • #15418 [ts] Handle exponentiation operator in constant folding (@ehoogeveen-medweb)