@babel/plugin-proposal-import-attributes-to-assertions

Thanks @victorenator for your first PR!

:bug: Bug Fix

• babel-parser, babel-template, babel-types

  • fix: Keep type annotations in syntacticPlaceholders mode (@liuxingbaoyu)

• babel-helper-compilation-targets, babel-preset-env

  • fix: support BROWSERSLIST{,_CONFIG} env (@JLHwung)

• Other

  • Analyze ClassAccessorProperty to prevent the no-undef rule (@victorenator)

:house: Internal

• babel-helper-transform-fixture-test-runner

  • remove test options flaky (@JLHwung)

• Every package

  • fix: Accidentally published tsconfig files (@liuxingbaoyu)

:running_woman: Performance

• babel-parser, babel-types

  • perf: Make VISITOR_KEYS etc. faster to access (@liuxingbaoyu)