Bump @babel/core from 7.29.7 to 8.0.0 - #428

Sourced from @​babel/core's releases.

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 and migration guide for plugin developers.

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

👓 Spec Compliance

• babel-core
  • #18039 perf: Only extract source map comments at the end of the file (@​liuxingbaoyu)

💥 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 Fallback to assuming ESM support with modules: auto (@​nicolo-ribaudo)
• babel-plugin-transform-runtime, babel-runtime-corejs3, babel-runtime
  • #18036 Remove corejs exports for @babe/runtime-corejs3 (@​liuxingbaoyu)
• babel-parser
  • #18034 Remove locations: "packed" (@​liuxingbaoyu)

🐛 Bug Fix

• babel-generator
  • #18046 fix(generator): improve new callee parens check (@​JLHwung)
• babel-plugin-transform-modules-systemjs
  • #18032 fix(systemjs): support proto as an export name (@​JLHwung)

📝 Documentation

• #18070 Add EOL date for Babel 7 (end of June 2027) to SECURITY.md (@​nicolo-ribaudo)

🏠 Internal

• #18018 ci: enforce yarn integrity (@​JLHwung)

🏃‍♀️ Performance

• babel-core
  • #18039 perf: Only extract source map comments at the end of the file (@​liuxingbaoyu)

Committers: 6

• Babel Bot (@​babel-bot)
• Huáng Jùnliàng (@​JLHwung)
• James Garbutt (@​43081j)
• Nicolò Ribaudo (@​nicolo-ribaudo)
• Sandy Chen (@​sandy2008)
• @​liuxingbaoyu

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

Re-release all packages with npm provenance attestations

🐛 Bug Fix

• babel-generator
  • #18011 Catchup source map position in preserveFormat (@​nicolo-ribaudo)
• babel-core

... (truncated)

Sourced from @​babel/core's changelog.

v8.0.0 (2026-06-16)

👓 Spec Compliance

• babel-core
  • #18039 perf: Only extract source map comments at the end of the file (@​liuxingbaoyu)

💥 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 Fallback to assuming ESM support with modules: auto (@​nicolo-ribaudo)
• babel-plugin-transform-runtime, babel-runtime-corejs3, babel-runtime
  • #18036 Remove corejs exports for @babe/runtime-corejs3 (@​liuxingbaoyu)
• babel-parser
  • #18034 Remove locations: "packed" (@​liuxingbaoyu)

🐛 Bug Fix

• babel-generator
  • #18046 fix(generator): improve new callee parens check (@​JLHwung)
• babel-plugin-transform-modules-systemjs
  • #18032 fix(systemjs): support proto as an export name (@​JLHwung)

📝 Documentation

• #18070 Add EOL date for Babel 7 (end of June 2027) to SECURITY.md (@​nicolo-ribaudo)

🏠 Internal

• #18018 ci: enforce yarn integrity (@​JLHwung)

🏃‍♀️ Performance

• babel-core
  • #18039 perf: Only extract source map comments at the end of the file (@​liuxingbaoyu)

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

🐛 Bug Fix

• babel-generator
  • #18011 Catchup source map position in preserveFormat (@​nicolo-ribaudo)
• babel-core
  • #17999 fix: improve inputSourceMap URL handling (@​JLHwung)
• babel-core, babel-generator
  • #17992 Preserve original identifier names from input sourcemaps (@​Andarist)

🏠 Internal

• babel-core
  • #17970 Always use native Node.js TS support for config files (@​nicolo-ribaudo)
• babel-compat-data, babel-register
  • #17993 chore: use bundled dts for register and eslint-* (@​JLHwung)
• babel-helper-transform-fixture-test-runner, babel-node
  • #17989 Test Node.js 26 on CI (@​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 Add file URL support for test runners (@​JLHwung)

🔬 Output optimization

... (truncated)

• 7dc825a v8.0.0
• b71c35a perf: Only extract source map comments at the end of the file (#18039)
• e74b70d chore: Remove unused file (#18033)
• ae57969 chore: consolidate upwards traversal to empathic (#18030)
• 827d003 Change jest snapshotFormat (#18029)
• 34cf24e Update deps (#18023)
• 73bceef v8.0.0-rc.6
• 4493983 Always use native Node.js TS support for config files (#17970)
• 448aef3 Show source maps mappings as point-to-point (#18008)
• c6d71f3 Enable strictFunctionTypes (#17946)
• Additional commits viewable in compare view