@babel/runtime-corejs2

Thanks @luxp and @pigcan for your first PRs!

:bug: Bug Fix

• Other

  • chore: do not provide polyfills on bundling @babel/standalone (@JLHwung)

  • fix(eslint-parser): merge input estree options (@JLHwung)

• babel-compat-data, babel-preset-env

  • Fix Module not found: Error: Can't resolve 'core-js/modules/es6.array.concat.js' with compat-data@7.13.x (@luxp)

• babel-plugin-transform-runtime, babel-runtime-corejs2, babel-runtime-corejs3, babel-runtime

  • Allow require() of runtime helpers in Node.js 13.2-13.6 (@nicolo-ribaudo)

:nail_care: Polish

• babel-helper-create-class-features-plugin

  • Do not warn for loose of class features in preset-env (@nicolo-ribaudo)

:house: Internal

• babel-core, babel-helper-transform-fixture-test-runner, babel-register

  • [internal] Keep the .cjs extension when compiling source files (@nicolo-ribaudo)

• babel-plugin-transform-runtime, babel-runtime-corejs2, babel-runtime

  • Improve @babel/runtime esm stability (@nicolo-ribaudo)

:microscope: Output optimization

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

  • Skip _extends helper for {…x} with modern targets (@nicolo-ribaudo)