# Babel changelog

> The compiler for writing next-generation JavaScript.

- Vendor: Babel
- Category: Frameworks & Libraries
- Official site: https://babeljs.io
- Tracked by: What's New (https://whatsnew.fyi/product/babel)
- Harvested from: GitHub (babel/babel)
- Entries below: 10 (newest first)

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

## Releases

### v8.0.4

- Date: 2026-07-09
- Version: v8.0.4
- Original notes: https://github.com/babel/babel/releases/tag/v8.0.4
- Permalink: https://whatsnew.fyi/product/babel/releases/v8.0.4

- **fixed** — Disallow `declare module M {}` in TypeScript
- **fixed** — Forbid `let x!` and `let x! =` syntax in TypeScript
- **fixed** — `replaceWith` in `Visitor#exit` should not stop traversal

##### v8.0.4 (2026-07-09)

###### :eyeglasses: Spec Compliance
* `babel-parser`, `babel-plugin-transform-typescript`
  * [#18120](https://github.com/babel/babel/pull/18120) fix(parser): disallow `declare module M {}` ([@JLHwung](https://github.com/JLHwung))
* `babel-generator`, `babel-parser`, `babel-plugin-transform-typescript`
  * [#18100](https://github.com/babel/babel/pull/18100) fix(parser): forbid let x! and let x! = ([@JLHwung](https://github.com/JLHwung))

###### :bug: Bug Fix
* `babel-traverse`
  * [#18122](https://github.com/babel/babel/pull/18122) fix: `replaceWith` in `Visitor#exit` should not stop traversal ([@liuxingbaoyu](https://github.com/liuxingbaoyu))

###### :house: Internal
* `babel-helper-validator-identifier`
  * [#18084](https://github.com/babel/babel/pull/18084) refactor: Shrink validator identifier size ([@JLHwung](https://github.com/JLHwung))

###### Committers: 4
- Babel Bot ([@babel-bot](https://github.com/babel-bot))
- Huáng Jùnliàng ([@JLHwung](https://github.com/JLHwung))
- Nicolò Ribaudo ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
- [@liuxingbaoyu](https://github.com/liuxingbaoyu)

### v8.0.3

- Date: 2026-06-27
- Version: v8.0.3
- Original notes: https://github.com/babel/babel/releases/tag/v8.0.3
- Permalink: https://whatsnew.fyi/product/babel/releases/v8.0.3

- **fixed** — Remove `isTSX` from `babel-plugin-syntax-typescript` types
- **fixed** — Use `runtime: 'classic'` in the browser for React in babel-standalone

##### v8.0.3 (2026-06-27)

###### :bug: Bug Fix
* `babel-core`, `babel-plugin-syntax-typescript`
  * [#18089](https://github.com/babel/babel/pull/18089) fix: Remove `isTSX` from `babel-plugin-syntax-typescript` types ([@liuxingbaoyu](https://github.com/liuxingbaoyu))
* `babel-standalone`
  * [#18086](https://github.com/babel/babel/pull/18086) fix: Use `runtime: 'classic'` in the browser for React ([@liuxingbaoyu](https://github.com/liuxingbaoyu))

###### Committers: 2
- Nicolò Ribaudo ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
- [@liuxingbaoyu](https://github.com/liuxingbaoyu)

### v8.0.2

- Date: 2026-06-20
- Version: v8.0.2
- Original notes: https://github.com/babel/babel/releases/tag/v8.0.2
- Permalink: https://whatsnew.fyi/product/babel/releases/v8.0.2

- **fixed** — Use the @babel/core version when asserting version in @babel/standalone
- **fixed** — Avoid double escaping slash in identifier validation

##### v8.0.2 (2026-06-18)

###### :bug: Bug Fix
* Other
  * [#18083](https://github.com/babel/babel/pull/18083) Use the `@babel/core` version when asserting version in `@babel/standalone` ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
* `babel-helper-validator-identifier`
  * [#18075](https://github.com/babel/babel/pull/18075) fix(identifier): avoid double escaping slash ([@JLHwung](https://github.com/JLHwung))

###### :house: Internal
* `babel-plugin-proposal-decorators`, `babel-plugin-transform-regenerator`, `babel-preset-env`
  * [#18081](https://github.com/babel/babel/pull/18081) Update `@babel/preset-modules` and polyfill packages ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))

###### Committers: 2
- Huáng Jùnliàng ([@JLHwung](https://github.com/JLHwung))
- Nicolò Ribaudo ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))

### v8.0.1

- Date: 2026-06-17
- Version: v8.0.1
- Original notes: https://github.com/babel/babel/releases/tag/v8.0.1
- Permalink: https://whatsnew.fyi/product/babel/releases/v8.0.1

- **removed** — Remove preset-env's useBuiltIns option

##### v8.0.1 (2026-06-17)

This release includes a breaking change that was in the Babel 8 migration guide's [Getting ready](https://babeljs.io/docs/v8-migration/#getting-ready) section and [in the release post](https://babeljs.io/blog/2026/06/16/8.0.0/#extract-polyfill-injection-to-separate-packages), but the actual removal of the feature from the codebase was accidentally not complete.

###### :boom: Breaking Change
* `babel-core`, `babel-plugin-transform-object-rest-spread`, `babel-plugin-transform-runtime`, `babel-preset-env`, `babel-standalone`
  * [#18079](https://github.com/babel/babel/pull/18079) Actually remove `preset-env`'s `useBuiltIns` ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))

###### Committers: 2
- Huáng Jùnliàng ([@JLHwung](https://github.com/JLHwung))
- Nicolò Ribaudo ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))

### v8.0.0

- Date: 2026-06-16
- Version: v8.0.0
- Original notes: https://github.com/babel/babel/releases/tag/v8.0.0
- Permalink: https://whatsnew.fyi/product/babel/releases/v8.0.0

- **changed** — Only extract source map comments at the end of the file for improved performance
- **changed** — Fallback to assuming ESM support with `modules: auto`
- **removed** — Remove corejs exports for `@babel/runtime-corejs3`
- **removed** — Remove `locations: "packed"` from babel-parser
- **fixed** — Improve new callee parens check in generator
- **fixed** — Support __proto__ as an export name in systemjs plugin

##### v8.0.0 (2026-06-16)

**NOTE:** The changelog below is relative to v8.0.0-rc.6. You can find a summary of all the breaking changes shipped in the Babel 8 release line in the [migration guide for users](https://babeljs.io/docs/v8-migration) and [migration guide for plugin developers](https://babeljs.io/docs/v8-migration-api).

Read the release blog post at http://babeljs.io/blog/2026/06/16/8.0.0!

###### :eyeglasses: Spec Compliance
* `babel-core`
  * [#18039](https://github.com/babel/babel/pull/18039) perf: Only extract source map comments at the end of the file ([@liuxingbaoyu](https://github.com/liuxingbaoyu))

###### :boom: Breaking Change
* `babel-cli`, `babel-node`, `babel-plugin-proposal-decorators`, `babel-plugin-transform-classes`, `babel-plugin-transform-function-name`, `babel-plugin-transform-modules-commonjs`, `babel-plugin-transform-object-rest-spread`, `babel-plugin-transform-parameters`, `babel-plugin-transform-react-constant-elements`, `babel-plugin-transform-regenerator`, `babel-preset-env`, `babel-register`
  * [#18069](https://github.com/babel/babel/pull/18069) Fallback to assuming ESM support with `modules: auto` ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
* `babel-plugin-transform-runtime`, `babel-runtime-corejs3`, `babel-runtime`
  * [#18036](https://github.com/babel/babel/pull/18036) Remove corejs exports for `@babe/runtime-corejs3` ([@liuxingbaoyu](https://github.com/liuxingbaoyu))
* `babel-parser`
  * [#18034](https://github.com/babel/babel/pull/18034) Remove `locations: "packed"` ([@liuxingbaoyu](https://github.com/liuxingbaoyu))

###### :bug: Bug Fix
* `babel-generator`
  * [#18046](https://github.com/babel/babel/pull/18046) fix(generator): improve new callee parens check ([@JLHwung](https://github.com/JLHwung))
* `babel-plugin-transform-modules-systemjs`
  * [#18032](https://github.com/babel/babel/pull/18032) fix(systemjs): support __proto__ as an export name ([@JLHwung](https://github.com/JLHwung))

###### :memo: Documentation
* [#18070](https://github.com/babel/babel/pull/18070) Add EOL date for Babel 7 (end of June 2027) to SECURITY.md ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))

###### :house: Internal
* [#18018](https://github.com/babel/babel/pull/18018) ci: enforce yarn integrity ([@JLHwung](https://github.com/JLHwung))

###### :running_woman: Performance
* `babel-core`
  * [#18039](https://github.com/babel/babel/pull/18039) perf: Only extract source map comments at the end of the file ([@liuxingbaoyu](https://github.com/liuxingbaoyu))

###### Committers: 6
- Babel Bot ([@babel-bot](https://github.com/babel-bot))
- Huáng Jùnliàng ([@JLHwung](https://github.com/JLHwung))
- James Garbutt ([@43081j](https://github.com/43081j))
- Nicolò Ribaudo ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
- Sandy Chen ([@sandy2008](https://github.com/sandy2008))
- [@liuxingbaoyu](https://github.com/liuxingbaoyu)

### v7.29.7

- Date: 2026-05-25
- Version: v7.29.7
- Original notes: https://github.com/babel/babel/releases/tag/v7.29.7
- Permalink: https://whatsnew.fyi/product/babel/releases/v7.29.7

##### v7.29.7 (2026-05-25)

Re-release all packages with npm provenance attestations

### v7.29.6

- Date: 2026-05-25
- Version: v7.29.6
- Original notes: https://github.com/babel/babel/releases/tag/v7.29.6
- Permalink: https://whatsnew.fyi/product/babel/releases/v7.29.6

- **fixed** — Catch up source map position in preserveFormat mode
- **fixed** — Improve input source map handling
- **fixed** — Preserve original identifier names from input sourcemaps

##### v7.29.6 (2026-05-25)

###### :bug: Bug Fix
* `babel-generator`
  * [#18014](https://github.com/babel/babel/pull/18014) Catchup source map position in preserveFormat ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
* `babel-core`
  * [#18001](https://github.com/babel/babel/pull/18001) [7.x packport]Improve input source map handling ([@JLHwung](https://github.com/JLHwung))
* `babel-core`, `babel-generator`
  * [#17998](https://github.com/babel/babel/pull/17998) Preserve original identifier names from input sourcemaps (#17992) ([@Andarist](https://github.com/Andarist))

###### Committers: 3
- Huáng Jùnliàng ([@JLHwung](https://github.com/JLHwung))
- Mateusz Burzyński ([@Andarist](https://github.com/Andarist))
- Nicolò Ribaudo ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))

### v8.0.0-rc.6

- Date: 2026-05-25
- Version: v8.0.0-rc.6
- Original notes: https://github.com/babel/babel/releases/tag/v8.0.0-rc.6
- Permalink: https://whatsnew.fyi/product/babel/releases/v8.0.0-rc.6
- Labels: Pre-release

- **fixed** — Catch up source map position in preserveFormat
- **fixed** — Improve inputSourceMap URL handling
- **fixed** — Preserve original identifier names from input sourcemaps
- **changed** — Do not emit source map names for identical names

##### v8.0.0-rc.6 (2026-05-25)

Re-release all packages with npm provenance attestations

###### :bug: Bug Fix
* `babel-generator`
  * [#18011](https://github.com/babel/babel/pull/18011) Catchup source map position in preserveFormat ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
* `babel-core`
  * [#17999](https://github.com/babel/babel/pull/17999) fix: improve inputSourceMap URL handling ([@JLHwung](https://github.com/JLHwung))
* `babel-core`, `babel-generator`
  * [#17992](https://github.com/babel/babel/pull/17992) Preserve original identifier names from input sourcemaps ([@Andarist](https://github.com/Andarist))

###### :house: Internal
* `babel-core`
  * [#17970](https://github.com/babel/babel/pull/17970) Always use native Node.js TS support for config files ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
* `babel-compat-data`, `babel-register`
  * [#17993](https://github.com/babel/babel/pull/17993) chore: use bundled dts for register and eslint-* ([@JLHwung](https://github.com/JLHwung))
* `babel-helper-transform-fixture-test-runner`, `babel-node`
  * [#17989](https://github.com/babel/babel/pull/17989) Test Node.js 26 on CI ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
* `babel-build-external-helpers`, `babel-cli`, `babel-generator`, `babel-helper-fixtures`, `babel-helper-plugin-test-runner`, `babel-helper-transform-fixture-test-runner`, `babel-node`, `babel-parser`, `babel-plugin-transform-modules-systemjs`, `babel-types`
  * [#18002](https://github.com/babel/babel/pull/18002) Add file URL support for test runners ([@JLHwung](https://github.com/JLHwung))

###### :microscope: Output optimization
* `babel-cli`, `babel-core`, `babel-generator`, `babel-plugin-transform-class-properties`, `babel-plugin-transform-destructuring`, `babel-plugin-transform-explicit-resource-management`, `babel-plugin-transform-modules-commonjs`, `babel-plugin-transform-react-jsx`, `babel-traverse`
  * [#18005](https://github.com/babel/babel/pull/18005) Do not emit source map names for identical names ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))

###### Committers: 5
- Babel Bot ([@babel-bot](https://github.com/babel-bot))
- Huáng Jùnliàng ([@JLHwung](https://github.com/JLHwung))
- Mateusz Burzyński ([@Andarist](https://github.com/Andarist))
- Nicolò Ribaudo ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
- [@liuxingbaoyu](https://github.com/liuxingbaoyu)

### v8.0.0-rc.5

- Date: 2026-05-12
- Version: v8.0.0-rc.5
- Original notes: https://github.com/babel/babel/releases/tag/v8.0.0-rc.5
- Permalink: https://whatsnew.fyi/product/babel/releases/v8.0.0-rc.5
- Labels: Pre-release

- **changed** — Use 0-based columns in code-frame to match Babel AST locations
- **removed** — Disallow decorators on abstract/declare fields in parser
- **removed** — Remove `transform-object-set-prototype-of-to-assign` plugin
- **removed** — Remove noop plugins from `@babel/standalone`
- **changed** — Require Node.js `^22.18.0 || >=24.11.0`
- **deprecated** — Deprecate `spec` and `loose` plugin options in transform plugins
- **fixed** — Update browser-upper.json in helper-globals
- **fixed** — Improve module string name support in systemjs plugin

##### v8.0.0-rc.5 (2026-05-12)

###### :eyeglasses: Spec Compliance
* `babel-parser`
  * [#17949](https://github.com/babel/babel/pull/17949) Disallow decorators on abstract/declare fields ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))

###### :boom: Breaking Change
* `babel-code-frame`, `babel-core`, `babel-parser`, `babel-traverse`
  * [#17849](https://github.com/babel/babel/pull/17849) fix(code-frame): use 0-based columns to match Babel AST locations (#1… ([@nehemiyawicks](https://github.com/nehemiyawicks))
* _All packages_
  * [#17969](https://github.com/babel/babel/pull/17969) Require Node.js `^22.18.0 || >=24.11.0` ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
* `babel-plugin-transform-object-set-prototype-of-to-assign`, `babel-standalone`
  * [#17958](https://github.com/babel/babel/pull/17958) Remove `transform-object-set-prototype-of-to-assign` ([@liuxingbaoyu](https://github.com/liuxingbaoyu))
* `babel-standalone`
  * [#17963](https://github.com/babel/babel/pull/17963) Remove noop plugins from `@babel/standalone` ([@liuxingbaoyu](https://github.com/liuxingbaoyu))

###### :loudspeaker: Deprecation
* `babel-plugin-transform-arrow-functions`, `babel-plugin-transform-classes`, `babel-plugin-transform-computed-properties`, `babel-plugin-transform-destructuring`, `babel-plugin-transform-for-of`, `babel-plugin-transform-modules-amd`, `babel-plugin-transform-modules-commonjs`, `babel-plugin-transform-modules-umd`, `babel-plugin-transform-nullish-coalescing-operator`, `babel-plugin-transform-object-rest-spread`, `babel-plugin-transform-optional-chaining`, `babel-plugin-transform-parameters`, `babel-plugin-transform-private-methods`, `babel-plugin-transform-private-property-in-object`, `babel-plugin-transform-spread`, `babel-plugin-transform-template-literals`
  * [#17972](https://github.com/babel/babel/pull/17972) Deprecate `spec` and `loose` plugin options ([@liuxingbaoyu](https://github.com/liuxingbaoyu))

###### :bug: Bug Fix
* `babel-helper-globals`
  * [#17981](https://github.com/babel/babel/pull/17981) fix(helper-globals): Update browser-upper.json ([@JLHwung](https://github.com/JLHwung))
* `babel-plugin-transform-modules-systemjs`
  * [#17973](https://github.com/babel/babel/pull/17973) fix(systemjs): improve module string name support ([@JLHwung](https://github.com/JLHwung))

###### :memo: Documentation
* [#17977](https://github.com/babel/babel/pull/17977) Add threat model to SECURITY.md ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))

###### :house: Internal
* `babel-core`, `babel-helper-create-class-features-plugin`, `babel-plugin-proposal-decorators`, `babel-plugin-transform-async-to-generator`, `babel-plugin-transform-class-static-block`, `babel-plugin-transform-flow-strip-types`, `babel-plugin-transform-modules-amd`, `babel-plugin-transform-modules-systemjs`, `babel-plugin-transform-typescript`, `babel-preset-env`, `babel-preset-flow`, `babel-preset-react`, `babel-preset-typescript`
  * [#17957](https://github.com/babel/babel/pull/17957) Add testing for plugin options ([@liuxingbaoyu](https://github.com/liuxingbaoyu))
* Other
  * [#17950](https://github.com/babel/babel/pull/17950) refactor(ts): migrate babel-eslint-plugin-* to TS ([@JLHwung](https://github.com/JLHwung))

###### Committers: 6
- Babel Bot ([@babel-bot](https://github.com/babel-bot))
- Huáng Jùnliàng ([@JLHwung](https://github.com/JLHwung))
- Nehemiya Wickramasinghe ([@nehemiyawicks](https://github.com/nehemiyawicks))
- Nicolò Ribaudo ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
- [@liuxingbaoyu](https://github.com/liuxingbaoyu)
- [@orbisai0security](https://github.com/orbisai0security)

### v7.29.5

- Date: 2026-05-05
- Version: v7.29.5
- Original notes: https://github.com/babel/babel/releases/tag/v7.29.5
- Permalink: https://whatsnew.fyi/product/babel/releases/v7.29.5

- **changed** — Update @babel/* dependencies in babel-preset-env

##### v7.29.5 (2026-05-05)

###### :house:  Internal
* `babel-preset-env`
  * Update `@babel/*` dependencies