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3.43.0

published 3.43.0 • 2 weeks ago

Changelog

3.43.0 - 2025.06.09

Changes v3.42.0...v3.43.0 (139 commits)
Explicit Resource Management proposals:
- Built-ins:
  - Symbol.dispose
  - Symbol.asyncDispose
  - SuppressedError
  - DisposableStack
    - DisposableStack.prototype.dispose
    - DisposableStack.prototype.use
    - DisposableStack.prototype.adopt
    - DisposableStack.prototype.defer
    - DisposableStack.prototype.move
    - DisposableStack.prototype[@@dispose]
  - AsyncDisposableStack
    - AsyncDisposableStack.prototype.disposeAsync
    - AsyncDisposableStack.prototype.use
    - AsyncDisposableStack.prototype.adopt
    - AsyncDisposableStack.prototype.defer
    - AsyncDisposableStack.prototype.move
    - AsyncDisposableStack.prototype[@@asyncDispose]
  - Iterator.prototype[@@dispose]
  - AsyncIterator.prototype[@@asyncDispose]
- Moved to stable ES, May 2025 TC39 meeting
- Added es. namespace module, /es/ and /stable/ namespaces entries
Array.fromAsync proposal:
- Built-ins:
  - Array.fromAsync
- Moved to stable ES, May 2025 TC39 meeting
- Added es. namespace module, /es/ and /stable/ namespaces entries
Error.isError proposal:
- Built-ins:
  - Error.isError
- Moved to stable ES, May 2025 TC39 meeting
- Added es. namespace module, /es/ and /stable/ namespaces entries
Added Joint iteration stage 2.7 proposal:
- Added built-ins:
  - Iterator.zip
  - Iterator.zipKeyed
Added Iterator chunking stage 2 proposal:
- Added built-ins:
  - Iterator.prototype.chunks
  - Iterator.prototype.windows
Number.prototype.clamp proposal:
- Built-ins:
  - Number.prototype.clamp
- Moved to stage 2, May 2025 TC39 meeting
- Math.clamp was replaced with Number.prototype.clamp
- Removed a RangeError if min <= max or +0 min and -0 max, tc39/proposal-math-clamp/#22
Always check regular expression flags by flags getter PR. Native methods are not fixed, only own implementation updated for:
- RegExp.prototype[@@match]
- RegExp.prototype[@@replace]
Improved handling of RegExp flags in polyfills of some methods in engines without proper support of RegExp.prototype.flags and without polyfill of this getter
Added feature detection for a WebKit bug that occurs when this is updated while Set.prototype.difference is being executed
Added feature detection for a WebKit bug that occurs when iterator record of a set-like object isn't called before cloning this in the following methods:
- Set.prototype.symmetricDifference
- Set.prototype.union
Added feature detection for a bug in V8 ~ Chromium < 126. Following methods should throw an error on invalid iterator:
- Iterator.prototype.drop
- Iterator.prototype.filter
- Iterator.prototype.flatMap
- Iterator.prototype.map
Added feature detection for a WebKit bug: incorrect exception thrown by Iterator.from when underlying iterator's return method is null
Added feature detection for a FF bug: incorrect exception thrown by Array.prototype.with when index coercion fails
Added feature detection for a WebKit bug: TypedArray.prototype.with should truncate negative fractional index to zero, but instead throws an error
Worked around a bug of many different tools (example) with incorrect transforming and breaking JS syntax on getting a method from a number literal
Fixed deoptimization of the Promise polyfill in the pure version
Added some missed dependencies to /iterator/flat-map entries
Some other minor fixes and improvements
Compat data improvements:
- Added Deno 2.3 and Deno 2.3.2 compat data mapping
- Updated Electron 37 compat data mapping
- Added Opera Android 90 compat data mapping
- Error.isError marked not supported in Node because of a bug
- Set.prototype.difference marked as not supported in Safari and supported only from Bun 1.2.5 because of a bug
- Set.prototype.{ symmetricDifference, union } marked as not supported in Safari and supported only from Bun 1.2.5 because of a bug
- Iterator.from marked as not supported in Safari and supported only from Bun 1.2.5 because of a bug
- Iterators closing on early errors in Iterator helpers marked as implemented from FF141
- Array.prototype.with marked as supported only from FF140 because it throws an incorrect exception when index coercion fails
- TypedArray.prototype.with marked as unsupported in Bun and Safari because it should truncate negative fractional index to zero, but instead throws an error
- DisposableStack and AsyncDisposableStack marked as shipped in FF141 (SuppressedError has a bug)
- AsyncDisposableStack bugs marked as fixed in Deno 2.3.2
- SuppressedError bugs (extra arguments support and arity) marked as fixed in Bun 1.2.15

3.42.0

published 3.42.0 • 2 months ago

Changelog

3.42.0 - 2025.04.30

Changes v3.41.0...v3.42.0 (142 commits)
Map upsert proposal:
- Moved to stage 2.7, April 2025 TC39 meeting
- Validation order of WeakMap.prototype.getOrInsertComputed updated following tc39/proposal-upsert#79
- Built-ins:
  - Map.prototype.getOrInsert
  - Map.prototype.getOrInsertComputed
  - WeakMap.prototype.getOrInsert
  - WeakMap.prototype.getOrInsertComputed
Don't call well-known Symbol methods for RegExp on primitive values following tc39/ecma262#3009:
- For avoid performance regression, temporarily, only in own core-js implementations
- Built-ins:
  - String.prototype.matchAll
  - String.prototype.match
  - String.prototype.replaceAll
  - String.prototype.replace
  - String.prototype.search
  - String.prototype.split
Added workaround for the Uint8Array.prototype.setFromBase64 bug in some of Linux builds of WebKit
Implemented early-error iterator closing following tc39/ecma262#3467, including fix of a WebKit bug, in the following methods:
- Iterator.prototype.drop
- Iterator.prototype.every
- Iterator.prototype.filter
- Iterator.prototype.find
- Iterator.prototype.flatMap
- Iterator.prototype.forEach
- Iterator.prototype.map
- Iterator.prototype.reduce
- Iterator.prototype.some
- Iterator.prototype.take
Fixed missing forced replacement of AsyncIterator helpers
Added closing of sync iterator when async wrapper yields a rejection following tc39/ecma262#2600. Affected methods:
- Array.fromAsync (due to the lack of async feature detection capability - temporarily, only in own core-js implementation)
- AsyncIterator.from
- Iterator.prototype.toAsync
Added detection for throwing on undefined initial parameter in Iterator.prototype.reduce (see WebKit bug)
core-js-compat and core-js-builder API:
- Added 'intersect' support for targets.esmodules (Babel 7 behavior)
- Fixed handling of targets.esmodules: true (Babel 7 behavior)
Compat data improvements:
- Explicit Resource Management features disabled (again) in V8 ~ Chromium 135 and re-added in 136
- RegExp.escape marked as shipped from V8 ~ Chromium 136
- Error.isError marked as shipped from FF138
- Explicit Resource Management features re-enabled in Deno 2.2.10
- Iterator helpers proposal features marked as supported from Deno 1.38.1 since it seems they were disabled in 1.38.0
- Iterator.prototype.{ drop, reduce, take } methods marked as fixed in Bun 1.2.11
- Added NodeJS 24.0 compat data mapping
- Updated Electron 36 and added Electron 37 compat data mapping
- Added Opera Android 88 and 89 compat data mapping
- Added Oculus Quest Browser 37 compat data mapping

3.41.0

published 3.41.0 • 4 months ago

Changelog

3.41.0 - 2025.03.01

Changes v3.40.0...v3.41.0 (85 commits)
RegExp.escape proposal:
- Built-ins:
  - RegExp.escape
- Moved to stable ES, February 2025 TC39 meeting
- Added es. namespace module, /es/ and /stable/ namespaces entries
Float16 proposal:
- Built-ins:
  - Math.f16round
  - DataView.prototype.getFloat16
  - DataView.prototype.setFloat16
- Moved to stable ES, February 2025 TC39 meeting
- Added es. namespace modules, /es/ and /stable/ namespaces entries
Math.clamp stage 1 proposal:
- Built-ins:
  - Math.clamp
- Extracted from old Math extensions proposal, February 2025 TC39 meeting
- Added arguments validation
- Added new entries
Added a workaround of a V8 AsyncDisposableStack bug, tc39/proposal-explicit-resource-management/256
Compat data improvements:
- DisposableStack, SuppressedError and Iterator.prototype[@@dispose] marked as shipped from V8 ~ Chromium 134
- Error.isError added and marked as shipped from V8 ~ Chromium 134
- Math.f16round and DataView.prototype.{ getFloat16, setFloat16 } marked as shipped from V8 ~ Chromium 135
- Iterator helpers proposal features marked as shipped from Safari 18.4
- JSON.parse source text access proposal features marked as shipped from Safari 18.4
- Math.sumPrecise marked as shipped from FF137
- Added Deno 2.2 compat data and compat data mapping
  - Explicit Resource Management features are available in V8 ~ Chromium 134, but not in Deno 2.2 based on it
- Updated Electron 35 and added Electron 36 compat data mapping
- Updated Opera Android 87 compat data mapping
- Added Samsung Internet 28 compat data mapping
- Added Oculus Quest Browser 36 compat data mapping

3.40.0

published 3.40.0 • 6 months ago

Changelog

3.40.0 - 2025.01.08

Changes v3.39.0...v3.40.0 (130 commits)
Added Error.isError stage 3 proposal:
- Added built-ins:
  - Error.isError
- We have no bulletproof way to polyfill this method / check if the object is an error, so it's an enough naive implementation that is marked as .sham
Explicit Resource Management stage 3 proposal:
- Updated the way async disposing of only sync disposable resources, tc39/proposal-explicit-resource-management/218
Iterator sequencing stage 2.7 proposal:
- Reuse IteratorResult objects when possible, tc39/proposal-iterator-sequencing/17, tc39/proposal-iterator-sequencing/18, December 2024 TC39 meeting
Added a fix of V8 < 12.8 / NodeJS < 22.10 bug with handling infinite length of set-like objects in Set methods
Optimized DataView.prototype.{ getFloat16, setFloat16 } performance, #1379, thanks @LeviPesin
Dropped unneeded feature detection of non-standard %TypedArray%.prototype.toSpliced
Dropped possible re-usage of some non-standard / early stage features (like Math.scale) available on global
Some other minor improvements
Compat data improvements:
- RegExp.escape marked as shipped from Safari 18.2
- Promise.try marked as shipped from Safari 18.2
- Math.f16round and DataView.prototype.{ getFloat16, setFloat16 } marked as shipped from Safari 18.2
- Uint8Array to / from base64 and hex proposal methods marked as shipped from Safari 18.2
- JSON.parse source text access proposal features marked as shipped from FF135
- RegExp.escape marked as shipped from FF134
- Promise.try marked as shipped from FF134
- Symbol.dispose, Symbol.asyncDispose and Iterator.prototype[@@dispose] marked as shipped from FF135
- JSON.parse source text access proposal features marked as shipped from Bun 1.1.43
- Fixed NodeJS version where URL.parse was added - 22.1 instead of 22.0
- Added Deno 2.1 compat data mapping
- Added Rhino 1.8.0 compat data with significant number of modern features
- Added Electron 35 compat data mapping
- Updated Opera 115+ compat data mapping
- Added Opera Android 86 and 87 compat data mapping

3.39.0

published 3.39.0 • 8 months ago

Changelog

3.39.0 - 2024.10.31

Changes v3.38.1...v3.39.0
Iterator helpers proposal:
- Built-ins:
  - Iterator
    - Iterator.from
    - Iterator.prototype.drop
    - Iterator.prototype.every
    - Iterator.prototype.filter
    - Iterator.prototype.find
    - Iterator.prototype.flatMap
    - Iterator.prototype.forEach
    - Iterator.prototype.map
    - Iterator.prototype.reduce
    - Iterator.prototype.some
    - Iterator.prototype.take
    - Iterator.prototype.toArray
    - Iterator.prototype[@@toStringTag]
- Moved to stable ES, October 2024 TC39 meeting
- Added es. namespace modules, /es/ and /stable/ namespaces entries
Promise.try:
- Built-ins:
  - Promise.try
- Moved to stable ES, October 2024 TC39 meeting
- Added es. namespace module, /es/ and /stable/ namespaces entries
- Fixed /actual|full/promise/try entries for the callback arguments support
Math.sumPrecise proposal:
- Built-ins:
  - Math.sumPrecise
- Moved to stage 3, October 2024 TC39 meeting
- Added /actual/ namespace entries, unconditional forced replacement changed to feature detection
Added Iterator sequencing stage 2.7 proposal:
- Added built-ins:
  - Iterator.concat
Map upsert stage 2 proposal:
- Updated to the new API following the October 2024 TC39 meeting
- Added built-ins:
  - Map.prototype.getOrInsert
  - Map.prototype.getOrInsertComputed
  - WeakMap.prototype.getOrInsert
  - WeakMap.prototype.getOrInsertComputed
Extractors proposal moved to stage 2, October 2024 TC39 meeting
Usage of @@species pattern removed from %TypedArray% and ArrayBuffer methods, tc39/ecma262/3450:
- Built-ins:
  - %TypedArray%.prototype.filter
  - %TypedArray%.prototype.filterReject
  - %TypedArray%.prototype.map
  - %TypedArray%.prototype.slice
  - %TypedArray%.prototype.subarray
  - ArrayBuffer.prototype.slice
Some other minor improvements
Compat data improvements:
- Uint8Array to / from base64 and hex proposal methods marked as shipped from FF133
- Added NodeJS 23.0 compat data mapping
- self descriptor is fixed in Deno 1.46.0
- Added Deno 1.46 and 2.0 compat data mapping
- Iterator helpers proposal methods marked as shipped from Bun 1.1.31
- Added Electron 34 and updated Electron 33 compat data mapping
- Added Opera Android 85 compat data mapping
- Added Oculus Quest Browser 35 compat data mapping

3.38.1

published 3.38.1 • 10 months ago

Changelog

3.38.1 - 2024.08.20

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

3.38.0

published 3.38.0 • 11 months ago

Changelog

3.38.0 - 2024.08.05

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:
- 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

3.37.1

published 3.37.1 • last year

Changelog

3.37.1 - 2024.05.14

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

3.37.0

published 3.37.0 • last year

Changelog

3.37.0 - 2024.04.17

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

3.36.1

published 3.36.1 • last year

Changelog

3.36.1 - 2024.03.19

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

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