@babel/runtime-corejs2

Thanks @jayaddison and @RafaelSalguero for their first PRs!

:bug: Bug Fix

• babel-helper-builder-react-jsx-experimental, babel-helper-create-class-features-plugin, babel-helper-member-expression-to-functions, babel-helper-module-transforms, babel-helper-transform-fixture-test-runner, babel-plugin-proposal-async-generator-functions, babel-plugin-proposal-decorators, babel-plugin-proposal-function-bind, babel-plugin-proposal-partial-application, babel-plugin-proposal-pipeline-operator, babel-plugin-transform-block-scoping, babel-plugin-transform-modules-amd, babel-plugin-transform-modules-systemjs, babel-plugin-transform-parameters, babel-plugin-transform-react-jsx-source, babel-plugin-transform-runtime, babel-plugin-transform-template-literals, babel-plugin-transform-typescript

  • Disallow duplicated AST nodes (@JLHwung)

• babel-parser

  • fix: add optional: false to chained optional call expression (@JLHwung)

  • fix: throw expect jsx plugin error when an idStart or > is seen (@JLHwung)

• babel-plugin-transform-typescript

  • Typescript transform now removes generic arguments from optional calls (Closes #11813) (@RafaelSalguero)

• babel-plugin-transform-block-scoping

  • Fix break/continue when switch is nested inside loop (@existentialism)

• babel-generator, babel-plugin-transform-typescript, babel-types

  • Refactor generated builder names in @babel/types (@zxbodya)

• babel-compat-data

  • fix: update class properties support matrix (@JLHwung)

:memo: Documentation

• Other

  • docs: update README example and REPL link (@JLHwung)

  • Add note about running Make targets in Windows 10 (@kaicataldo)

• babel-parser

  • docs: add AST spec on optional chain [skip ci] (@JLHwung)

:house: Internal

• babel-cli, babel-compat-data, babel-core, babel-helper-define-map, babel-helper-fixtures, babel-helper-module-transforms, babel-helper-regex, babel-helper-transform-fixture-test-runner, babel-node, babel-plugin-transform-proto-to-assign, babel-register, babel-traverse, babel-types

  • Bump some deps for audit (@existentialism)

• babel-helper-fixtures, babel-traverse

  • Replace lodash 'clone' usage with ES6 Spread initializer (@jayaddison)

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

  • Replace lodash 'extend' usage with Object.assign (@jayaddison)

• babel-plugin-transform-block-scoping

  • Reduce dependency on lodash functions: values, extends (@jayaddison)

• babel-generator, babel-plugin-transform-typescript, babel-types

  • Refactor generated builder names in @babel/types (@zxbodya)

• babel-cli, babel-generator, babel-helper-transform-fixture-test-runner, babel-traverse, babel-types

  • Reduce dependency on lodash functions: includes, uniq, repeat, isinteger (@jayaddison)

• Other

  • chore: refine yarn cache config (@JLHwung)

• babel-register

  • test: add console warn spy on babel-register tests (@JLHwung)

  • chore: remove babel-register generated test artifacts (@JLHwung)