@babel/runtime-corejs2

:bug: Bug Fix

• babel-code-frame

  • fix code-frame marker with highlighting (@tanhauhau)

• babel-plugin-proposal-object-rest-spread

  • Workaround #10179 in proposal-object-rest-spread (@nicolo-ribaudo)

• babel-types

  • add assertShape to validate templateElement (@tanhauhau)

• babel-helper-create-class-features-plugin, babel-helper-member-expression-to-functions, babel-helper-replace-supers, babel-helpers, babel-plugin-proposal-class-properties, babel-plugin-transform-classes, babel-plugin-transform-object-super, babel-types

  • destructuring private fields with array pattern / object pattern (@tanhauhau)

• babel-plugin-transform-flow-comments

  • fix transform-flow-comments for import types (@tanhauhau)

• babel-core, babel-helpers

  • always throw when add missing helpers (@tanhauhau)

• babel-plugin-transform-runtime

  • Closes #10205 (@sag1v)

• babel-helpers, babel-plugin-transform-instanceof

  • fix: custom instOfHandler result should be cast to boolean (@JLHwung)

:house: Internal

• babel-parser, babel-plugin-transform-typescript

  • Use correct extension for typescript fixtures (@danez)

:running_woman: Performance

• babel-helpers, babel-plugin-proposal-object-rest-spread, babel-preset-env

  • perf: match ownKeys perf to the one of objectSpread (@JLHwung)