@babel/highlight

Blog post: babeljs.io/blog/2020/03/16/7.9.0

:rocket: New Feature

• babel-generator, babel-helper-builder-react-jsx-experimental, babel-helper-builder-react-jsx, babel-plugin-transform-block-scoping, babel-plugin-transform-classes, babel-plugin-transform-function-name, babel-plugin-transform-react-constant-elements, babel-plugin-transform-react-inline-elements, babel-plugin-transform-react-jsx-development, babel-plugin-transform-react-jsx, babel-plugin-transform-regenerator, babel-preset-react, babel-preset-typescript, babel-standalone

  • Mark transpiled JSX elements as pure (@nicolo-ribaudo)

• babel-helper-builder-react-jsx-experimental, babel-helper-builder-react-jsx, babel-plugin-transform-react-jsx-development, babel-plugin-transform-react-jsx-self, babel-plugin-transform-react-jsx, babel-preset-react, babel-standalone

  • Add experimental version of the babel-plugin-transform-react-jsx transform (@lunaruan)

• babel-compat-data, babel-preset-env

  • Include preset modules (@nicolo-ribaudo)

  • Add numeric separator to shippedProposals (@Wetinee)

• babel-core, babel-helpers, babel-plugin-proposal-class-properties, babel-plugin-proposal-decorators, babel-plugin-transform-classes, babel-plugin-transform-function-name, babel-plugin-transform-parameters, babel-plugin-transform-react-jsx, babel-plugin-transform-runtime, babel-plugin-transform-typescript, babel-preset-env

  • Allow extending untranspiled classes (@nicolo-ribaudo)

• babel-core, babel-helper-module-transforms, babel-plugin-transform-modules-amd, babel-plugin-transform-modules-commonjs, babel-plugin-transform-modules-systemjs, babel-plugin-transform-modules-umd

  • Allow defining the moduleIds-related option in the transform plugins (@nicolo-ribaudo)

• babel-core, babel-generator, babel-parser, babel-plugin-syntax-record-and-tuple, babel-types

  • Added support for record and tuple syntax. (@rickbutton)

• babel-generator, babel-parser, babel-plugin-transform-flow-strip-types, babel-preset-flow

  • Implement support for declare on class fields with Flow (@nicolo-ribaudo)

• babel-types

  • Add cloneDeepWithoutLoc (@Taym95)

• babel-generator

  • Added jsescOptions to Numeric Literals (@sidntrivedi012)

• babel-generator, babel-parser, babel-types

  • Add support for flow's SymbolTypeAnnotation (@existentialism)

• babel-parser

  • Parse BigInts by default (@nicolo-ribaudo)

  • Add estree parsing support for export * as A (@existentialism)

  • feat: align ID_Start/ID_Continue regex to Unicode 13.0.0 (@JLHwung)

• babel-plugin-transform-react-jsx-source, babel-preset-react

  • feat(react-jsx-source): add columnNumber property (@motiz88)

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

  • Add import type and export type support to TypeScript (@nicolo-ribaudo)

:bug: Bug Fix

• babel-helper-builder-react-jsx-experimental, babel-helper-builder-react-jsx, babel-helper-validator-identifier, babel-highlight, babel-parser, babel-types

  • Add @babel/helper-validator-identifier (@JLHwung)

• babel-plugin-proposal-optional-chaining

  • Memoize call expressions in optional chains in loose mode (@oliverdunk)

• babel-plugin-transform-react-jsx-self, babel-preset-react

  • Pass the correct this to JSX's __self with the old plugin (@nicolo-ribaudo)

• babel-helper-builder-react-jsx-experimental, babel-plugin-transform-react-jsx-development, babel-plugin-transform-react-jsx

  • Use the correct this in __self for JSX elements in arrows (@nicolo-ribaudo)

• babel-compat-data, babel-preset-env

  • Move object-rest-spread after transform-parameters (@JLHwung)

• babel-helpers, babel-plugin-transform-for-of, babel-preset-env

  • Allow for-of on polyfilled or builtin iterables without Symbol support (@nicolo-ribaudo)

  • Add for-of fallback for arrays in browsers without symbol support (@nicolo-ribaudo)

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

  • fix: object-rest-spread should not transform export array rest (@JLHwung)

• babel-register

  • Add path separator to @babel/register sourceRoot (@andrewdotn)

• babel-core, babel-helpers, babel-plugin-transform-runtime

  • Create File class for babel helpers (@JLHwung)

• babel-helpers, babel-plugin-transform-modules-commonjs, babel-preset-env, babel-runtime-corejs2, babel-runtime

  • Allow rest/spread on polyfilled or builtin iterables without Symbol support (@nicolo-ribaudo)

• babel-parser

  • Allow await when it is not in AsyncArrowHead (@arku)

• babel-helpers, babel-plugin-proposal-object-rest-spread, babel-runtime-corejs2, babel-runtime

  • fix(rest-spread): Do not require Symbol.iterator for strings (@clshortfuse)

• babel-generator

  • Fix printing edge cases in Nullish Coalescing and Optional Chaining (@jridgewell)

:nail_care: Polish

• babel-parser

  • Rephrase parser error message (@JLHwung)

• babel-helpers, babel-plugin-transform-destructuring, babel-plugin-transform-modules-commonjs, babel-plugin-transform-spread, babel-preset-env, babel-runtime-corejs2, babel-runtime

  • Throw better errors for non-iterables when Symbol doesn't exist. (@nicolo-ribaudo)

:house: Internal

• babel-helper-builder-react-jsx-experimental, babel-helper-builder-react-jsx, babel-helper-validator-identifier, babel-highlight, babel-parser, babel-types

  • Add @babel/helper-validator-identifier (@JLHwung)

• babel-compat-data, babel-preset-env

  • Update compat-data (@existentialism)

• babel-core

  • chore: bump json5 and minimist (@JLHwung)

• babel-types

  • Add stricter Optional Chain node validation (@jridgewell)

  • Update Purish aliases (@jridgewell)

• babel-helpers, babel-plugin-transform-block-scoping, babel-plugin-transform-for-of, babel-plugin-transform-parameters, babel-plugin-transform-runtime, babel-preset-env

  • Extract for-of iterator handling to a helper (@nicolo-ribaudo)

• babel-core, babel-plugin-proposal-decorators, babel-plugin-proposal-logical-assignment-operators, babel-plugin-proposal-object-rest-spread, babel-plugin-proposal-partial-application, babel-plugin-proposal-pipeline-operator, babel-plugin-transform-parameters, babel-traverse

  • Support more node types in generateUidBasedOnNode (@jridgewell)

• Other

  • Remove unused gulp-rename (@existentialism)