v7.25.4 (2024-08-22)

🐛 Bug Fix

• babel-traverse
  • #16756 fix: Skip computed key when renaming (@ liuxingbaoyu)
• babel-helper-create-class-features-plugin, babel-plugin-proposal-decorators
  • #16755 fix: Decorator 2018-09 may throw an exception (@ liuxingbaoyu)
• babel-types
  • #16710 Visit AST fields nodes according to their syntactical order (@ nicolo-ribaudo)
• babel-generator
  • #16709 Print semicolon after TS export namespace as A (@ nicolo-ribaudo)

💅 Polish

• babel-generator, babel-plugin-proposal-decorators, babel-plugin-proposal-destructuring-private, babel-plugin-proposal-pipeline-operator, babel-plugin-transform-class-properties, babel-plugin-transform-destructuring, babel-plugin-transform-optional-chaining, babel-plugin-transform-private-methods, babel-plugin-transform-private-property-in-object, babel-plugin-transform-typescript, babel-runtime-corejs2, babel-runtime, babel-traverse
  • #16722 Avoid unnecessary parens around sequence expressions (@ nicolo-ribaudo)
• babel-generator, babel-plugin-transform-class-properties
  • #16714 Avoid unnecessary parens around exported arrow functions (@ nicolo-ribaudo)
• babel-generator, babel-plugin-proposal-decorators, babel-plugin-proposal-destructuring-private, babel-plugin-transform-object-rest-spread
  • #16712 Avoid printing unnecessary parens around object destructuring (@ nicolo-ribaudo)

🔬 Output optimization

• babel-generator
  • #16740 Avoid extra spaces between comments/regexps in compact mode (@ nicolo-ribaudo)

Committers: 4

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

v7.25.0 (2024-07-26)

Thanks @ davidtaylorhq and @ slatereax for your first PR!

You can find the release blog post with some highlights at https://babeljs.io/blog/2024/07/26/7.25.0.

👓 Spec Compliance

• babel-helpers, babel-plugin-proposal-explicit-resource-management, babel-runtime-corejs3
  • #16537 await using normative updates (@ JLHwung)
• babel-plugin-transform-typescript
  • #16602 Ensure enum members syntactically determinable to be strings do not get reverse mappings (@ liuxingbaoyu)

🚀 New Feature

• babel-helper-create-class-features-plugin, babel-helper-function-name, babel-helper-plugin-utils, babel-helper-wrap-function, babel-plugin-bugfix-safari-class-field-initializer-scope, babel-plugin-bugfix-safari-id-destructuring-collision-in-function-expression, babel-plugin-transform-classes, babel-plugin-transform-function-name, babel-preset-env, babel-traverse, babel-types
  • #16658 Move ensureFunctionName to NodePath.prototype (@ nicolo-ribaudo)
• babel-helper-hoist-variables, babel-helper-plugin-utils, babel-plugin-proposal-async-do-expressions, babel-plugin-transform-modules-systemjs, babel-traverse
  • #16644 Move hoistVariables to Scope.prototype (@ nicolo-ribaudo)
• babel-helper-create-class-features-plugin, babel-helper-module-transforms, babel-helper-plugin-utils, babel-helper-split-export-declaration, babel-plugin-transform-classes, babel-traverse, babel-types
  • #16645 Move splitExportDeclaration to NodePath.prototype (@ nicolo-ribaudo)
• babel-helper-create-class-features-plugin, babel-helper-environment-visitor, babel-helper-module-transforms, babel-helper-plugin-utils, babel-helper-remap-async-to-generator, babel-helper-replace-supers, babel-plugin-bugfix-firefox-class-in-computed-class-key, babel-plugin-bugfix-v8-static-class-fields-redefine-readonly, babel-plugin-transform-async-generator-functions, babel-plugin-transform-classes, babel-traverse
  • #16649 Move environment-visitor helper into @ babel/traverse (@ nicolo-ribaudo)
• babel-core, babel-parser
  • #16480 Expose wether a module has TLA or not as .extra.async (@ nicolo-ribaudo)
• babel-compat-data, babel-plugin-bugfix-safari-class-field-initializer-scope, babel-preset-env
  • #16569 Introduce bugfix-safari-class-field-initializer-scope (@ davidtaylorhq)
• babel-plugin-transform-block-scoping, babel-traverse, babel-types
  • #16551 Add NodePath#getAssignmentIdentifiers (@ JLHwung)
• babel-helper-import-to-platform-api, babel-plugin-proposal-json-modules
  • #16579 Add uncheckedRequire option for JSON imports to CJS (@ nicolo-ribaudo)
• babel-helper-transform-fixture-test-runner, babel-node
  • #16642 Allow using custom config in babel-node --eval (@ slatereax)
• babel-compat-data, babel-helper-create-regexp-features-plugin, babel-plugin-proposal-duplicate-named-capturing-groups-regex, babel-plugin-transform-duplicate-named-capturing-groups-regex, babel-preset-env, babel-standalone
  • #16445 Add duplicate-named-capturing-groups-regex to preset-env (@ JLHwung)

🐛 Bug Fix

• babel-generator
  • #16678 Print parens around as expressions on the LHS (@ nicolo-ribaudo)
• babel-template, babel-types
  • #15286 fix: Props are lost when the template replaces the node (@ liuxingbaoyu)

🏠 Internal

• Other
  • #16674 bump gulp to 5 (@ JLHwung)
• babel-generator
  • #16651 Simplify the printing logic for ( before ambiguous tokens (@ nicolo-ribaudo)
• babel-helper-function-name, babel-plugin-transform-arrow-functions, babel-plugin-transform-function-name, babel-preset-env, babel-traverse
  • #16652 Simplify helper-function-name logic (@ nicolo-ribaudo)

🏃‍♀️ Performance

• babel-parser, babel-plugin-proposal-pipeline-operator
  • #16461 Some minor parser performance improvements for ts (@ liuxingbaoyu)

🔬 Output optimization

• babel-plugin-transform-classes
  • #16670 Reduce redundant assertThisInitialized (@ liuxingbaoyu)
• babel-helper-create-class-features-plugin, babel-helper-replace-supers, babel-helpers, babel-plugin-proposal-decorators, babel-plugin-transform-class-properties, babel-plugin-transform-classes, babel-plugin-transform-exponentiation-operator, babel-plugin-transform-object-super, babel-plugin-transform-private-methods, babel-runtime-corejs2, babel-runtime-corejs3, babel-runtime
  • #16374 Improve super.x output (@ liuxingbaoyu)
• babel-plugin-transform-class-properties, babel-plugin-transform-classes
  • #16656 Simplify output for anonymous classes with no methods (@ nicolo-ribaudo)

Committers: 6

• Artem (@ slatereax)
• Babel Bot (@ babel-bot)
• David Taylor (@ davidtaylorhq)
• Huáng Jùnliàng (@ JLHwung)
• Nicolò Ribaudo (@ nicolo-ribaudo)
• @ liuxingbaoyu

v7.24.8 (2024-07-11)

Thanks @ H0onnn, @ jkup and @ SreeXD for your first pull requests!

👓 Spec Compliance

• babel-parser
  • #16567 Do not use strict mode in TS declare (@ liuxingbaoyu)

🐛 Bug Fix

• babel-generator
  • #16630 Correctly print parens around in in for heads (@ nicolo-ribaudo)
  • #16626 Fix printing of comments in await using (@ nicolo-ribaudo)
  • #16591 fix typescript code generation for yield expression inside type expre… (@ SreeXD)
• babel-parser
  • #16613 Disallow destructuring assignment in using declarations (@ H0onnn)
  • #16490 fix: do not add .value: undefined to regexp literals (@ liuxingbaoyu)
• babel-types
  • #16615 Remove boolean props from ObjectTypeInternalSlot visitor keys (@ nicolo-ribaudo)
• babel-plugin-transform-typescript
  • #16566 fix: Correctly handle export import x = (@ liuxingbaoyu)

💅 Polish

• babel-generator
  • #16625 Avoid unnecessary parens around async in for await (@ nicolo-ribaudo)
• babel-traverse
  • #16619 Avoid checking Scope.globals multiple times (@ liuxingbaoyu)

Committers: 9

• Amjad Yahia Robeen Hassan (@ amjed-98)
• Babel Bot (@ babel-bot)
• Huáng Jùnliàng (@ JLHwung)
• Jon Kuperman (@ jkup)
• Nagendran N (@ SreeXD)
• Nicolò Ribaudo (@ nicolo-ribaudo)
• Sukka (@ SukkaW)
• @ H0onnn
• @ liuxingbaoyu

• Changes v3.38.0...v3.38.1
• Fixed some cases of URLSearchParams percent decoding, #1357, #1361, thanks @ slowcheetah
• Some stylistic changes and minor optimizations
• Compat data improvements:
  • Iterator helpers proposal methods marked as shipped from FF131
  • Math.f16round and DataView.prototype.{ getFloat16, setFloat16 } marked as shipped from Bun 1.1.23
  • RegExp.escape marked as shipped from Bun 1.1.22
  • Promise.try marked as shipped from Bun 1.1.22
  • Uint8Array to / from base64 and hex proposal methods marked as shipped from Bun 1.1.22
  • Added Hermes 0.13 compat data, similar to React Native 0.75 Hermes
  • Added Opera Android 84 compat data mapping

• Changes v3.37.1...v3.38.0
• RegExp.escape proposal:
  • Built-ins:
    • RegExp.escape
  • Moved to stage 3, June 2024 and July 2024 TC39 meetings
  • Updated the way of escaping, regex-escaping/77
  • Throw an error on non-strings, regex-escaping/58
  • Added /actual/ namespace entries, unconditional forced replacement changed to feature detection
• Promise.try proposal:
  • Built-ins:
    • Promise.try
  • Moved to stage 3, June 2024 TC39 meeting
  • Added /actual/ namespace entries, unconditional forced replacement changed to feature detection
• Uint8Array to / from base64 and hex stage 3 proposal:
  • Built-ins:
    • Uint8Array.fromBase64
    • Uint8Array.fromHex
    • Uint8Array.prototype.setFromBase64
    • Uint8Array.prototype.setFromHex
    • Uint8Array.prototype.toBase64
    • Uint8Array.prototype.toHex
  • Added Uint8Array.prototype.{ setFromBase64, setFromHex } methods
  • Added Uint8Array.fromBase64 and Uint8Array.prototype.setFromBase64 lastChunkHandling option, proposal-arraybuffer-base64/33
  • Added Uint8Array.prototype.toBase64 omitPadding option, proposal-arraybuffer-base64/60
  • Added throwing a TypeError on arrays backed by detached buffers
  • Unconditional forced replacement changed to feature detection
• Fixed RegExp named capture groups polyfill in combination with non-capturing groups, #1352, thanks @ Ulop
• Improved some cases of environment detection
• Uses process.getBuiltinModule for getting built-in NodeJS modules where it's available
• Uses https instead of http in URL constructor feature detection to avoid extra notifications from some overly vigilant security scanners, #1345
• Some minor optimizations
• Updated browserslist in core-js-compat dependencies that fixes an upstream issue with incorrect interpretation of some browserslist queries, #1344, browserslist/829, browserslist/836
• Compat data improvements:
  • Added Safari 18.0 compat data:
    • Fixed Object.groupBy and Map.groupBy to work for non-objects
    • Fixed throwing a RangeError if Set methods are called on an object with negative size property
    • Fixed Set.prototype.symmetricDifference to call this.has in each iteration
    • Fixed Array.fromAsync to not call the Array constructor twice
    • Added URL.parse
  • Math.f16round and DataView.prototype.{ getFloat16, setFloat16 } marked as shipped from FF129
  • Symbol.asyncDispose added and marked as supported from V8 ~ Chromium 127
  • Promise.try added and marked as supported from V8 ~ Chromium 128
  • Added Deno 1.44 and 1.45 compat data mapping
  • self descriptor is broken in Deno 1.45.3 (again)
  • Added Electron 32 and 33 compat data mapping
  • Added Opera Android 83 compat data mapping
  • Added Samsung Internet 27 compat data mapping
  • Added Oculus Quest Browser 34 compat data mapping

• Changes v3.37.0...v3.37.1
• Fixed URL.parse feature detection for some specific cases
• Compat data improvements:
  • Set methods proposal added and marked as supported from FF 127
  • Symbol.dispose added and marked as supported from V8 ~ Chromium 125
  • Math.f16round and DataView.prototype.{ getFloat16, setFloat16 } added and marked as supported from Deno 1.43
  • URL.parse added and marked as supported from Chromium 126
  • URL.parse added and marked as supported from NodeJS 22.0
  • URL.parse added and marked as supported from Deno 1.43
  • Added Rhino 1.7.15 compat data, many features marked as supported
  • Added NodeJS 22.0 compat data mapping
  • Added Deno 1.43 compat data mapping
  • Added Electron 31 compat data mapping
  • Updated Opera Android 82 compat data mapping
  • Added Samsung Internet 26 compat data mapping
  • Added Oculus Quest Browser 33 compat data mapping

• Changes v3.36.1...v3.37.0
• New Set methods proposal:
  • Built-ins:
    • Set.prototype.intersection
    • Set.prototype.union
    • Set.prototype.difference
    • Set.prototype.symmetricDifference
    • Set.prototype.isSubsetOf
    • Set.prototype.isSupersetOf
    • Set.prototype.isDisjointFrom
  • Moved to stable ES, April 2024 TC39 meeting
  • Added es. namespace modules, /es/ and /stable/ namespaces entries
• Explicit Resource Management stage 3 proposal
  • Some minor updates like explicit-resource-management/217
• Added Math.sumPrecise stage 2.7 proposal:
  • Built-ins:
    • Math.sumPrecise
• Promise.try proposal:
  • Built-ins:
    • Promise.try
  • Added optional arguments support, promise-try/16
  • Moved to stage 2.7, April 2024 TC39 meeting
• RegExp.escape stage 2 proposal:
  • Moved to hex-escape semantics, regex-escaping/67
    • It's not the final change of the way of escaping, waiting for regex-escaping/77 soon
• Pattern matching stage 1 proposal:
  • Built-ins:
    • Symbol.customMatcher
  • Once again, the used well-known symbol was renamed
  • Added new entries for that
• Added Extractors stage 1 proposal:
  • Built-ins:
    • Symbol.customMatcher
  • Since the Symbol.customMatcher well-known symbol from the pattern matching proposal is also used in the exactors proposal, added an entry also for this proposal
• Added URL.parse, url/825
• Engines bugs fixes:
  • Added a fix of Safari { Object, Map }.groupBy bug that does not support iterable primitives
  • Added a fix of Safari bug with double call of constructor in Array.fromAsync
• Compat data improvements:
  • URL.parse added and marked as supported from FF 126
  • URL.parse added and marked as supported from Bun 1.1.4
  • URL.canParse fixed and marked as supported from Bun 1.1.0
  • New Set methods fixed in JavaScriptCore and marked as supported from Bun 1.1.1
  • Added Opera Android 82 compat data mapping

• Changes v3.36.0...v3.36.1
• Fixed some validation cases in Object.setPrototypeOf, #1329, thanks @ minseok-choe
• Fixed the order of validations in Array.from, #1331, thanks @ minseok-choe
• Added a fix of Bun queueMicrotask arity
• Added a fix of Bun URL.canParse arity
• Added a fix of Bun SuppressedError extra arguments support and arity
• Compat data improvements:
  • value argument of URLSearchParams.prototype.{ has, delete } marked as supported from Bun 1.0.31
  • Added React Native 0.74 Hermes compat data, Array.prototype.{ toSpliced, toReversed, with } and atob marked as supported
  • Added Deno 1.41.3 compat data mapping
  • Added Opera Android 81 compat data mapping
  • Added Samsung Internet 25 compat data mapping
  • Added Oculus Quest Browser 32 compat data mapping
  • Updated Electron 30 compat data mapping

• ArrayBuffer.prototype.transfer and friends proposal:
  • Built-ins:
    • ArrayBuffer.prototype.detached
    • ArrayBuffer.prototype.transfer
    • ArrayBuffer.prototype.transferToFixedLength
  • Moved to stable ES, Febrary 2024 TC39 meeting
  • Added es. namespace modules, /es/ and /stable/ namespaces entries
• Uint8Array to / from base64 and hex proposal:
  • Methods:
    • Uint8Array.fromBase64
    • Uint8Array.fromHex
    • Uint8Array.prototype.toBase64
    • Uint8Array.prototype.toHex
  • Moved to stage 3, Febrary 2024 TC39 meeting
  • Added /actual/ namespace entries
  • Skipped adding new methods of writing to existing arrays to clarification some moments
• Promise.try proposal has been resurrected and moved to stage 2, Febrary 2024 TC39 meeting
• Added an entry point for the new TC39 proposals stage - core-js/stage/2.7 - still empty
• Fixed regression in Set.prototype.intersection feature detection
• Fixed a missed check in Array.prototype.{ indexOf, lastIndexOf, includes }, #1325, thanks @ minseok-choe
• Fixed a missed check in Array.prototype.{ reduce, reduceRight }, #1327, thanks @ minseok-choe
• Fixed Array.from and some other methods with proxy targets, #1322, thanks @ minseok-choe
• Fixed dependencies loading for modules from ArrayBuffer.prototype.transfer and friends proposal in some specific cases in IE10-
• Dropped context workaround from collection static methods entries since with current methods semantic it's no longer required
• Added instance methods polyfills to entries of collections static methods that produce collection instances
• Added missed Date.prototype.toJSON to JSON.stringify entries dependencies
• Added debugging info in some missed cases
• Compat data improvements:
  • { Map, Object }.groupBy, Promise.withResolvers, ArrayBuffer.prototype.transfer and friends marked as supported from Safari 17.4
  • New Set methods fixed and marked as supported from V8 ~ Chrome 123
  • Added Deno 1.40 compat data mapping
  • Symbol.metadata marked as supported from Deno 1.40.4
  • Updated Electron 30 compat data mapping

• Fixed internal ToLength operation with bigints, #1318
• Removed significant redundant code from String#split polyfill
• Fixed setting names of methods with symbol keys in some old engines
• Minor fix of prototype methods export logic in the pure version
• Compat data improvements:
  • Iterator helpers proposal methods marked as supported from V8 ~ Chrome 122
  • Note that V8 ~ Chrome 122 add Set methods, but they have a bug similar to Safari
  • self marked as fixed from Bun 1.0.22
  • SuppressedError and Symbol.{ dispose, asyncDispose } marked as supported from Bun 1.0.23
  • Added Oculus Quest Browser 31 compat data mapping
  • Updated Electron 29 and added Electron 30 compat data mapping

• { Map, Set, WeakMap, WeakSet }.{ from, of } became non-generic, following this and some other notes. Now they can be invoked without this, but no longer return subclass instances
• Fixed handling some cases of non-enumerable symbol keys from Symbol polyfill
• Removed unneeded NodeJS domains-related logic from queueMicrotask polyfill
• Fixed subclassing of wrapped ArrayBuffer
• Refactoring, many different minor optimizations
• Compat data improvements:
  • Array.fromAsync marked as supported from V8 ~ Chrome 121
  • It seems that the ancient Array.prototype.push bug is fixed in V8 ~ Chrome 122 (Hallelujah!)
  • ArrayBuffer.prototype.transfer and friends proposal features marked as supported from FF 122 and Bun 1.0.19
  • Object.groupBy and Map.groupBy marked as supported from Bun 1.0.19
  • Since Iterator helpers proposal methods are still not disabled in Deno, the web compatibility issue why it was disabled in Chromium makes no sense for Deno and fixed in the spec, they marked as supported from Deno 1.37
  • Added Opera Android 80 and updated Opera Android 79 compat data mapping
  • Added Samsung Internet 24 compat data mapping

• Array grouping proposal:
  • Methods:
    • Object.groupBy
    • Map.groupBy
  • Moved to stable ES, November 2023 TC39 meeting
  • Added es. namespace modules, /es/ and /stable/ namespaces entries
• Promise.withResolvers proposal:
  • Method:
    • Promise.withResolvers
  • Moved to stable ES, November 2023 TC39 meeting
  • Added es. namespace module, /es/ and /stable/ namespaces entries
• Fixed a web incompatibility issue of Iterator helpers proposal, proposal-iterator-helpers/287 and some following changes, November 2023 TC39 meeting
• Added Uint8Array to / from base64 and hex stage 2 proposal:
  • Methods:
    • Uint8Array.fromBase64
    • Uint8Array.fromHex
    • Uint8Array.prototype.toBase64
    • Uint8Array.prototype.toHex
• Relaxed some specific cases of Number.fromString validation before clarification of proposal-number-fromstring/24
• Fixed @@ toStringTag property descriptors on DOM collections, #1312
• Fixed the order of arguments validation in Array iteration methods, #1313
• Some minor atob / btoa improvements
• Compat data improvements:
  • Promise.withResolvers marked as shipped from FF121

Fixed

• #1460
• #108
• #1439
• #1364

Fixed

• #1133
• #1001
• #977
• #1196
• #1111
• #1161

• Fixed broken UMD build
• Fixed edge-case causing skipped data during streaming compression
• Fixed bug in GZIP streaming on member boundary
• Improved streaming performance on inconsistent chunk sizes
• Improved unzip performance on undercompressed archives
• Added flushing support into streaming API
• Added backpressure support into async streaming API
  • Use new ondrain handler and queuedSize