@babel/runtime-corejs2

:eyeglasses: Spec Compliance

• babel-plugin-proposal-decorators

  • Class binding is in TDZ during decorators initialization (@nicolo-ribaudo)

• babel-helpers, babel-plugin-proposal-decorators

  • Allow addInitializer in field decorator context (@JLHwung)

:bug: Bug Fix

• babel-traverse, babel-types

  • Do not remove bindings when removing assignment expression path (@nicolo-ribaudo)

• babel-plugin-transform-classes

  • Require class properties transform when compiling class with private fields (@nicolo-ribaudo)

• babel-generator

  • fix: Missing parentheses after line break (@liuxingbaoyu)

• babel-helpers

  • Fix helpers internal fns names conflict resolution (@nicolo-ribaudo)

• babel-helper-create-class-features-plugin, babel-plugin-transform-class-properties, babel-plugin-transform-typescript

  • Simplify class fields injetion after super() (@nicolo-ribaudo)

• babel-generator, babel-plugin-transform-modules-commonjs, babel-plugin-transform-parameters, babel-plugin-transform-typescript, babel-traverse

  • fix: Unexpected duplication of comments (@liuxingbaoyu)

• babel-eslint-plugin

  • Add @babel/eslint-plugin/no-undef to fix no-undef with accessor props (@nicolo-ribaudo)

:microscope: Output optimization

• babel-helpers

  • Optimize decorator helper size (@liuxingbaoyu)