v7.27.2

v7.27.2 (2025-05-06)

🐛 Bug Fix

• babel-parser
  • #17289 fix: @babel/parser/bin/index.js contains node: protocol require (@liuxingbaoyu)
  • #17291 fix: Private class method not found when TS and estree (@liuxingbaoyu)
• babel-plugin-transform-object-rest-spread
  • #17281 Fix: improve object rest handling in array pattern (@JLHwung)
• babel-plugin-transform-modules-commonjs, babel-template
  • #17284 fix(babel-template): Properly handle empty string replacements (@magic-akari)

🏃‍♀️ Performance

• babel-cli
  • #17285 Enable Node compile cache for @babel/cli (@JLHwung)

Committers: 5

• Babel Bot (@babel-bot)
• Huáng Jùnliàng (@JLHwung)
• Nicolò Ribaudo (@nicolo-ribaudo)
• @liuxingbaoyu
• @magic-akari

v7.27.1

v7.27.1 (2025-04-30)

Thanks @kermanx and @woaitsAryan for your first PRs!

👓 Spec Compliance

• babel-parser
  • #17254 Allow using of as lexical declaration within for (@JLHwung)
  • #17230 Disallow get/set in TSPropertySignature (@JLHwung)
• babel-parser, babel-types
  • #17193 Stricter TSImportType options parsing (@JLHwung)

🐛 Bug Fix

• babel-plugin-proposal-destructuring-private, babel-plugin-proposal-do-expressions, babel-traverse
  • #17137 fix: do expressions should allow early exit (@kermanx)
• babel-helper-wrap-function, babel-plugin-transform-async-to-generator
  • #17251 Fix: propagate argument evaluation errors through async promise chain (@magic-akari)
• babel-helper-remap-async-to-generator, babel-plugin-transform-async-to-generator
  • #17231 fix apply()/call() annotated as pure (@Lacsw)
• babel-helper-fixtures, babel-parser
  • #17233 Create ChainExpression within TSInstantiationExpression (@JLHwung)
• babel-generator, babel-parser
  • #17226 Fill optional AST properties when both estree and typescript parser plugin are enabled (Part 2) (@JLHwung)
• babel-parser
  • #17224 Fill optional AST properties when both estree and typescript parser plugin are enabled (Part 1) (@JLHwung)
  • #17080 Fix start of TSParameterProperty (@JLHwung)
• babel-compat-data, babel-preset-env
  • #17228 Update firefox bugfix compat data (@JLHwung)
• babel-traverse
  • #17156 fix: Objects and arrays with multiple references should not be evaluated (@liuxingbaoyu)
• babel-generator
  • #17216 Fix: support const type parameter in generator (@JLHwung)

💅 Polish

• babel-plugin-bugfix-v8-spread-parameters-in-optional-chaining, babel-plugin-proposal-decorators, babel-plugin-transform-arrow-functions, babel-plugin-transform-class-properties, babel-plugin-transform-destructuring, babel-plugin-transform-object-rest-spread, babel-plugin-transform-optional-chaining, babel-plugin-transform-parameters, babel-traverse
  • #17221 Reduce generated names size for the 10th-11th (@nicolo-ribaudo)

🏠 Internal

• babel-runtime-corejs2, babel-runtime-corejs3, babel-runtime
  • #17263 Remove unused regenerator-runtime dep in @babel/runtime (@nicolo-ribaudo)
• babel-compat-data, babel-preset-env
  • #17256 Tune plugin compat data (@JLHwung)
• babel-compat-data, babel-standalone
  • #17236 migrate babel-compat-data build script to mjs (@JLHwung)
• babel-register
  • #16844 Migrate @babel/register to cts (@liuxingbaoyu)
• babel-helpers, babel-plugin-transform-async-generator-functions, babel-plugin-transform-regenerator, babel-preset-env, babel-runtime-corejs3
  • #17205 Inline regenerator in the relevant packages (@nicolo-ribaudo)
• All packages
  • #17207 Enforce node protocol import (@JLHwung)

🔬 Output optimization

• babel-helpers, babel-plugin-transform-modules-commonjs, babel-runtime-corejs3
  • #16538 Reduce interopRequireWildcard size (@liuxingbaoyu)
• babel-helpers, babel-plugin-transform-async-generator-functions, babel-plugin-transform-regenerator, babel-preset-env, babel-runtime-corejs3
  • #17213 Reduce regeneratorRuntime size (@liuxingbaoyu)

Committers: 9

• Aryan Bharti (@woaitsAryan)
• Babel Bot (@babel-bot)
• Frolov Roman (@Lacsw)
• Huáng Jùnliàng (@JLHwung)
• Nicolò Ribaudo (@nicolo-ribaudo)
• @liuxingbaoyu
• @magic-akari
• _Kerman (@kermanx)
• fisker Cheung (@fisker)

v7.27.0

v7.27.0 (2025-03-24)

Thanks @ishchhabra and @vovkasm for your first PRs!

👓 Spec Compliance

• babel-generator, babel-parser
  • #16977 Default importAttributesKeyword to with (@JLHwung)

🚀 New Feature

• babel-helper-create-class-features-plugin, babel-traverse, babel-types
  • #17169 Allow traverseFast to exit early (@liuxingbaoyu)
• babel-parser, babel-types
  • #17110 Add ImportAttributes to Standardized and move its parser test fixtures (@JLHwung)
• babel-generator
  • #17100 fix(babel-generator): add named export of generate function (@vovkasm)
• babel-parser, babel-template
  • #17149 Add allowYieldOutsideFunction to parser (@liuxingbaoyu)
• babel-plugin-transform-typescript, babel-traverse
  • #17102 feat: Add upToScope parameter to hasBinding (@liuxingbaoyu)
• babel-parser
  • #17082 Support ESTree AccessorProperty (@JLHwung)
• babel-types
  • #17162 feat(babel-types): Add support for BigInt literal conversion in valueToNode (@ishchhabra)

🐛 Bug Fix

• babel-helper-create-class-features-plugin, babel-plugin-transform-class-properties
  • #16816 fix: Class reference in type throws error (@liuxingbaoyu)
• babel-traverse
  • #17170 fix: Reset child scopes when scope.crawl() (@liuxingbaoyu)
• babel-helpers, babel-preset-typescript, babel-runtime-corejs2, babel-runtime-corejs3, babel-runtime
  • #17118 Fix: align behaviour to tsc rewriteRelativeImportExtensions (@JLHwung)
• babel-cli
  • #17182 fix: @babel/cli generates duplicate inline source maps (@liuxingbaoyu)
• babel-plugin-transform-named-capturing-groups-regex, babel-types
  • #17175 Generate computed proto key (@JLHwung)

🏃‍♀️ Performance

• babel-types
  • #16870 perf: Improve builders of @babel/types (@liuxingbaoyu)
• babel-helper-create-regexp-features-plugin
  • #17176 fix: improve duplicate named groups check (@JLHwung)

Committers: 5

• Babel Bot (@babel-bot)
• Huáng Jùnliàng (@JLHwung)
• Ish Chhabra (@ishchhabra)
• Vladimir Timofeev (@vovkasm)
• @liuxingbaoyu

v8.0.0-alpha.17

v8.0.0-alpha.17 (2025-03-11)

This release also includes all changes from v7.26.10.

This release includes a fix for GHSA-968p-4wvh-cqc8, a security vulnerability which affects the .replace method of transpiled regular expressions that use named capturing groups.

💥 Breaking Change

• babel-parser, babel-types
  • #17139 [Babel 8] Parse TSHeritageBase.expression as an expression (@JLHwung)

Committers: 6

• Babel Bot (@babel-bot)
• Huáng Jùnliàng (@JLHwung)
• Nicolò Ribaudo (@nicolo-ribaudo)
• Yunyoung Jordan Choi (@jordan-choi)
• @liuxingbaoyu
• @mmmsssttt404

v7.26.10

v7.26.10 (2025-03-11)

Thanks @jordan-choi and @mmmsssttt404 for your first PRs!

This release includes a fix for GHSA-968p-4wvh-cqc8, a security vulnerability which affects the .replace method of transpiled regular expressions that use named capturing groups.

👓 Spec Compliance

• babel-parser
  • #17159 Disallow decorator in array pattern (@JLHwung)

🐛 Bug Fix

• babel-parser, babel-template
  • #17164 Fix: always initialize ExportDeclaration attributes (@JLHwung)
• babel-core
  • #17142 fix: "Map maximum size exceeded" in deepClone (@liuxingbaoyu)
• babel-parser, babel-plugin-transform-typescript
  • #17154 Update typescript parser tests (@JLHwung)
• babel-traverse
  • #17151 fix: Should not evaluate vars in child scope (@liuxingbaoyu)
• babel-generator
  • #17153 fix: Correctly generate abstract override (@liuxingbaoyu)
• babel-parser
  • #17107 Fix source type detection when parsing TypeScript (@JLHwung)
• babel-helpers, babel-runtime, babel-runtime-corejs2, babel-runtime-corejs3
  • #17173 Fix processing of replacement pattern with named capture groups (@mmmsssttt404)

💅 Polish

• babel-standalone
  • #17158 Avoid warnings when re-bundling @babel/standalone with webpack (@liuxingbaoyu)

🏠 Internal

• babel-parser
  • #17160 Left-value parsing cleanup (@JLHwung)

Committers: 6

• Babel Bot (@babel-bot)
• Huáng Jùnliàng (@JLHwung)
• Nicolò Ribaudo (@nicolo-ribaudo)
• Yunyoung Jordan Choi (@jordan-choi)
• @liuxingbaoyu
• @mmmsssttt404

v8.0.0-alpha.16

v8.0.0-alpha.16 (2025-02-14)

In addition to the changelog below, this release includes changes from v7.26.6 to v7.26.9.

💥 Breaking Change

• babel-types
  • #17099 [babel 8] Remove legacy .d.ts for TypeScript <= 4.0 (@nicolo-ribaudo)
• babel-generator, babel-parser, babel-plugin-transform-template-literals, babel-traverse, babel-types
  • #17066 [Babel 8] Create TSTemplateLiteralType (@JLHwung)
• babel-generator, babel-parser, babel-plugin-transform-typescript, babel-types
  • #17073 [Babel 8] Parse export import = as an ExportNamedDeclaration (@JLHwung)
• babel-preset-env
  • #17078 [babel 8] Remove bugfixes option (@nicolo-ribaudo)
• babel-parser
  • #17063 [Babel 8] Create TSEmptyBodyFunctionExpression also on invalid input (@JLHwung)
• babel-parser, babel-plugin-transform-typescript, babel-types
  • #17059 [Babel 8] Create ThisExpression for typeof this (@JLHwung)

🐛 Bug Fix

• babel-generator
  • #17131 [Babel 8] Add several TS type parentheses rules (@JLHwung)
  • #17125 fix: Missing parentheses when printing a TS arrow function type in a union (@liuxingbaoyu)
• babel-parser
  • #17106 Fix TS non-array type start (@JLHwung)

🏠 Internal

• babel-parser, babel-plugin-proposal-pipeline-operator, babel-plugin-syntax-pipeline-operator
  • #17058 [babel 8] Remove remaining references to minimal/smart pipelines (@nicolo-ribaudo)

Committers: 7

• Babel Bot (@babel-bot)
• Huáng Jùnliàng (@JLHwung)
• Jamie Kyle (@jamiebuilds-signal)
• Nicolò Ribaudo (@nicolo-ribaudo)
• Tony Quetano (@tquetano-netflix)
• @branchseer
• @liuxingbaoyu

v7.26.9

v7.26.9 (2025-02-14)

🐛 Bug Fix

• babel-types
  • #17103 fix: Definition for TSPropertySignature.kind (@liuxingbaoyu)
• babel-generator, babel-types
  • #17062 Print TypeScript optional/definite in ClassPrivateProperty (@jamiebuilds-signal)

🏠 Internal

• babel-types
  • #17130 Use .ts files with explicit reexports to solve name conflicts (@nicolo-ribaudo)
• babel-core
  • #17127 Do not depend on @types/gensync in Babel 7 (@nicolo-ribaudo)

Committers: 5

• Babel Bot (@babel-bot)
• Huáng Jùnliàng (@JLHwung)
• Jamie Kyle (@jamiebuilds-signal)
• Nicolò Ribaudo (@nicolo-ribaudo)
• @liuxingbaoyu

v7.26.8

v7.26.8 (2025-02-08)

🏠 Internal

• babel-preset-env
  • #17097 Update dependency babel-plugin-polyfill-corejs3 to ^0.11.0

v7.26.7

v7.26.7 (2025-01-24)

Thanks @branchseer and @tquetano-netflix for your first PRs!

🐛 Bug Fix

• babel-helpers, babel-preset-env, babel-runtime-corejs3
  • #17086 Make "object without properties" helpers ES6-compatible (@tquetano-netflix)
• babel-plugin-transform-typeof-symbol
  • #17085 fix: Correctly handle typeof in arrow functions (@liuxingbaoyu)
• babel-parser
  • #17079 Respect ranges option in estree method value (@JLHwung)
• babel-core
  • #17052 Do not try to parse .ts configs as JSON if natively supported (@nicolo-ribaudo)
• babel-plugin-transform-typescript
  • #17050 fix: correctly resolve references to non-constant enum members (@branchseer)
• babel-plugin-transform-typescript, babel-traverse, babel-types
  • #17025 fix: Remove type-only import x = y.z (@liuxingbaoyu)

Committers: 6

• Babel Bot (@babel-bot)
• Huáng Jùnliàng (@JLHwung)
• Nicolò Ribaudo (@nicolo-ribaudo)
• Tony Quetano (@tquetano-netflix)
• @branchseer
• @liuxingbaoyu

v7.26.6

v7.26.6 (2025-01-13)

🐛 Bug Fix

• babel-plugin-transform-nullish-coalescing-operator
  • #17061 fix: Chaining nullish coalescing operators output size regression (@liuxingbaoyu)

Committers: 1

• @liuxingbaoyu