core-js-builder
Advanced tools
Changelog
Iterator
helpers proposal:
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]
es.
namespace modules, /es/
and /stable/
namespaces entriesPromise.try
:
Promise.try
es.
namespace module, /es/
and /stable/
namespaces entries/actual|full/promise/try
entries for the callback arguments supportMath.sumPrecise
proposal:
Math.sumPrecise
/actual/
namespace entries, unconditional forced replacement changed to feature detectionIterator
sequencing stage 2.7 proposal:
Iterator.concat
Map
upsert stage 2 proposal:
Map.prototype.getOrInsert
Map.prototype.getOrInsertComputed
WeakMap.prototype.getOrInsert
WeakMap.prototype.getOrInsertComputed
@@species
pattern removed from %TypedArray%
and ArrayBuffer
methods, tc39/ecma262/3450:
%TypedArray%.prototype.filter
%TypedArray%.prototype.filterReject
%TypedArray%.prototype.map
%TypedArray%.prototype.slice
%TypedArray%.prototype.subarray
ArrayBuffer.prototype.slice
Uint8Array
to / from base64 and hex proposal methods marked as shipped from FF133self
descriptor is fixed in Deno 1.46.0Iterator
helpers proposal methods marked as shipped from Bun 1.1.31Changelog
URLSearchParams
percent decoding, #1357, #1361, thanks @slowcheetahIterator
helpers proposal methods marked as shipped from FF131Math.f16round
and DataView.prototype.{ getFloat16, setFloat16 }
marked as shipped from Bun 1.1.23RegExp.escape
marked as shipped from Bun 1.1.22Promise.try
marked as shipped from Bun 1.1.22Uint8Array
to / from base64 and hex proposal methods marked as shipped from Bun 1.1.22Changelog
RegExp.escape
proposal:
RegExp.escape
/actual/
namespace entries, unconditional forced replacement changed to feature detectionPromise.try
proposal:
Promise.try
/actual/
namespace entries, unconditional forced replacement changed to feature detectionUint8Array
to / from base64 and hex stage 3 proposal:
Uint8Array.fromBase64
Uint8Array.fromHex
Uint8Array.prototype.setFromBase64
Uint8Array.prototype.setFromHex
Uint8Array.prototype.toBase64
Uint8Array.prototype.toHex
Uint8Array.prototype.{ setFromBase64, setFromHex }
methodsUint8Array.fromBase64
and Uint8Array.prototype.setFromBase64
lastChunkHandling
option, proposal-arraybuffer-base64/33Uint8Array.prototype.toBase64
omitPadding
option, proposal-arraybuffer-base64/60TypeError
on arrays backed by detached buffersRegExp
named capture groups polyfill in combination with non-capturing groups, #1352, thanks @Ulopprocess.getBuiltinModule
for getting built-in NodeJS modules where it's availablehttps
instead of http
in URL
constructor feature detection to avoid extra notifications from some overly vigilant security scanners, #1345browserslist
in core-js-compat
dependencies that fixes an upstream issue with incorrect interpretation of some browserslist
queries, #1344, browserslist/829, browserslist/836Object.groupBy
and Map.groupBy
to work for non-objectsRangeError
if Set
methods are called on an object with negative size propertySet.prototype.symmetricDifference
to call this.has
in each iterationArray.fromAsync
to not call the Array
constructor twiceURL.parse
Math.f16round
and DataView.prototype.{ getFloat16, setFloat16 }
marked as shipped from FF129Symbol.asyncDispose
added and marked as supported from V8 ~ Chromium 127Promise.try
added and marked as supported from V8 ~ Chromium 128self
descriptor is broken in Deno 1.45.3 (again)Changelog
URL.parse
feature detection for some specific casesSet
methods proposal added and marked as supported from FF 127Symbol.dispose
added and marked as supported from V8 ~ Chromium 125Math.f16round
and DataView.prototype.{ getFloat16, setFloat16 }
added and marked as supported from Deno 1.43URL.parse
added and marked as supported from Chromium 126URL.parse
added and marked as supported from NodeJS 22.0URL.parse
added and marked as supported from Deno 1.43Changelog
Set
methods proposal:
Set.prototype.intersection
Set.prototype.union
Set.prototype.difference
Set.prototype.symmetricDifference
Set.prototype.isSubsetOf
Set.prototype.isSupersetOf
Set.prototype.isDisjointFrom
es.
namespace modules, /es/
and /stable/
namespaces entriesMath.sumPrecise
stage 2.7 proposal:
Math.sumPrecise
Promise.try
proposal:
Promise.try
RegExp.escape
stage 2 proposal:
Symbol.customMatcher
Symbol.customMatcher
Symbol.customMatcher
well-known symbol from the pattern matching proposal is also used in the exactors proposal, added an entry also for this proposalURL.parse
, url/825URL.parse
added and marked as supported from FF 126URL.parse
added and marked as supported from Bun 1.1.4URL.canParse
fixed and marked as supported from Bun 1.1.0Set
methods fixed in JavaScriptCore and marked as supported from Bun 1.1.1Changelog
Object.setPrototypeOf
, #1329, thanks @minseok-choeArray.from
, #1331, thanks @minseok-choequeueMicrotask
arityURL.canParse
aritySuppressedError
extra arguments support and arityvalue
argument of URLSearchParams.prototype.{ has, delete }
marked as supported from Bun 1.0.31Array.prototype.{ toSpliced, toReversed, with }
and atob
marked as supportedChangelog
ArrayBuffer.prototype.transfer
and friends proposal:
ArrayBuffer.prototype.detached
ArrayBuffer.prototype.transfer
ArrayBuffer.prototype.transferToFixedLength
es.
namespace modules, /es/
and /stable/
namespaces entriesUint8Array
to / from base64 and hex proposal:
Uint8Array.fromBase64
Uint8Array.fromHex
Uint8Array.prototype.toBase64
Uint8Array.prototype.toHex
/actual/
namespace entriesPromise.try
proposal has been resurrected and moved to stage 2, Febrary 2024 TC39 meetingcore-js/stage/2.7
- still emptySet.prototype.intersection
feature detectionArray.prototype.{ indexOf, lastIndexOf, includes }
, #1325, thanks @minseok-choeArray.prototype.{ reduce, reduceRight }
, #1327, thanks @minseok-choeArray.from
and some other methods with proxy targets, #1322, thanks @minseok-choeArrayBuffer.prototype.transfer
and friends proposal in some specific cases in IE10-Date.prototype.toJSON
to JSON.stringify
entries dependencies{ Map, Object }.groupBy
, Promise.withResolvers
, ArrayBuffer.prototype.transfer
and friends marked as supported from Safari 17.4Set
methods fixed and marked as supported from V8 ~ Chrome 123Symbol.metadata
marked as supported from Deno 1.40.4Changelog
ToLength
operation with bigints, #1318String.prototype.split
polyfillIterator
helpers proposal methods marked as supported from V8 ~ Chrome 122Set
methods, but they have a bug similar to Safariself
marked as fixed from Bun 1.0.22SuppressedError
and Symbol.{ dispose, asyncDispose }
marked as supported from Bun 1.0.23Changelog
{ 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 instancesSymbol
polyfillqueueMicrotask
polyfillArrayBuffer
Array.fromAsync
marked as supported from V8 ~ Chrome 121Array.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 1.0.19Object.groupBy
and Map.groupBy
marked as supported from Bun 1.0.19Iterator
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 1.37Changelog
Array
grouping proposal:
Object.groupBy
Map.groupBy
es.
namespace modules, /es/
and /stable/
namespaces entriesPromise.withResolvers
proposal:
Promise.withResolvers
es.
namespace module, /es/
and /stable/
namespaces entriesIterator
helpers proposal, proposal-iterator-helpers/287 and some following changes, November 2023 TC39 meetingUint8Array
to / from base64 and hex stage 2 proposal:
Uint8Array.fromBase64
Uint8Array.fromHex
Uint8Array.prototype.toBase64
Uint8Array.prototype.toHex
Number.fromString
validation before clarification of proposal-number-fromstring/24@@toStringTag
property descriptors on DOM collections, #1312Array
iteration methods, #1313atob
/ btoa
improvementsPromise.withResolvers
marked as shipped from FF121