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Changelog
2.5.7 - 2018.05.26
- Get rid of reserved variable name
final
, related #400
2.5.6 - 2018.05.07
- Forced replace native
Promise
in V8 6.6 (Node 10 and Chrome 66) because of a bug with resolving custom thenables
- Added a workaround for usage buggy native LG WebOS 2
Promise
in microtask implementation, #396
- Added modern version internal debugging information about used versions
2.5.5 - 2018.04.08
- Fix some edge cases of
Reflect.set
, #392 and #393
2.5.4 - 2018.03.27
- Fixed one case of deoptimization built-in iterators in V8, related #377
- Fixed some cases of iterators feature detection, #368
- Fixed manually entered NodeJS domains issue in
Promise
, #367
- Fixed
Number.{parseInt, parseFloat}
entry points
- Fixed
__(define|lookup)[GS]etter__
import in the library
version
2.5.3 - 2017.12.12
- Fixed calling
onunhandledrejectionhandler
multiple times for one Promise
chain, #318
- Forced replacement of
String#{padStart, padEnd}
in Safari 10 because of a bug, #280
- Fixed
Array#@@iterator
in a very rare version of WebKit
, #236 and #237
- One more #345-related fix
2.5.2 - 2017.12.09
MutationObserver
no longer used for microtask implementation in iOS Safari because of bug with scrolling, #339
- Fixed
JSON.stringify(undefined, replacer)
case in the wrapper from the Symbol
polyfill, #345
Array()
calls changed to new Array()
for V8 optimisation
2.5.1 - 2017.09.01
- Updated
Promise#finally
per tc39/proposal-promise-finally#37
- Optimized usage of some internal helpers for reducing size of
shim
version
- Fixed some entry points for virtual methods
2.5.0 - 2017.08.05
- Added
Promise#finally
stage 3 proposal, #225
- Added
Promise.try
stage 1 proposal
- Added
Array#flatten
and Array#flatMap
stage 1 proposal
- Added
.of
and .from
methods on collection constructors stage 1 proposal:
Map.of
Set.of
WeakSet.of
WeakMap.of
Map.from
Set.from
WeakSet.from
WeakMap.from
- Added
Math
extensions stage 1 proposal, #226:
Math.clamp
Math.DEG_PER_RAD
Math.degrees
Math.fscale
Math.RAD_PER_DEG
Math.radians
Math.scale
- Added
Math.signbit
stage 1 proposal
- Updated
global
stage 3 proposal - added global
global object, System.global
deprecated
- Updated
Object.getOwnPropertyDescriptors
to the final version - it should not create properties if descriptors are undefined
- Updated the list of iterable DOM collections, #249, added:
CSSStyleDeclaration#@@iterator
CSSValueList#@@iterator
ClientRectList#@@iterator
DOMRectList#@@iterator
DOMStringList#@@iterator
DataTransferItemList#@@iterator
FileList#@@iterator
HTMLAllCollection#@@iterator
HTMLCollection#@@iterator
HTMLFormElement#@@iterator
HTMLSelectElement#@@iterator
MimeTypeArray#@@iterator
NamedNodeMap#@@iterator
PaintRequestList#@@iterator
Plugin#@@iterator
PluginArray#@@iterator
SVGLengthList#@@iterator
SVGNumberList#@@iterator
SVGPathSegList#@@iterator
SVGPointList#@@iterator
SVGStringList#@@iterator
SVGTransformList#@@iterator
SourceBufferList#@@iterator
TextTrackCueList#@@iterator
TextTrackList#@@iterator
TouchList#@@iterator
- Updated stages of proposals:
- Updated typed arrays to the modern (ES2016+) arguments validation,
#293
- Fixed
%TypedArray%.from
Safari bug, #285
- Fixed compatibility with old version of Prototype.js, #278, #289
Function#name
no longer cache the result for correct behaviour with inherited constructors, #296
- Added errors on incorrect context of collection methods, #272
- Fixed conversion typed array constructors to string, fix #300
- Fixed
Set#size
with debugger ReactNative for Android, #297
- Fixed an issue with Electron-based debugger, #230
- Fixed compatibility with incomplete third-party
WeakMap
polyfills, #252
- Added a fallback for
Date#toJSON
in engines without native Date#toISOString
, #220
- Added support for Sphere Dispatch API, #286
- Seriously changed the coding style and the ESLint config
- Updated many dev dependencies (
webpack
, uglify
, etc)
- Some other minor fixes and optimizations
2.4.1 - 2016.07.18
- Fixed
script
tag for some parsers, #204, #216
- Removed some unused variables, #217, #218
- Fixed MS Edge
Reflect.construct
and Reflect.apply
- they should not allow primitive as argumentsList
argument
1.2.7 [LEGACY] - 2016.07.18
2.4.0 - 2016.05.08
- Added
Observable
, stage 1 proposal
- Fixed behavior
Object.{getOwnPropertySymbols, getOwnPropertyDescriptor}
and Object#propertyIsEnumerable
on Object.prototype
Reflect.construct
and Reflect.apply
should throw an error if argumentsList
argument is not an object, #194
2.3.0 - 2016.04.24
2.2.2 - 2016.04.06
- Added conversion
-0
to +0
to Array#{indexOf, lastIndexOf}
, ES2016 fix
- Added fixes for some
Math
methods in Tor Browser
Array.{from, of}
no longer calls prototype setters
- Added workaround over Chrome DevTools strange behavior, #186
2.2.1 - 2016.03.19
- Fixed
Object.getOwnPropertyNames(window)
2.1+
versions bug, #181
2.2.0 - 2016.03.15
- Added
String#matchAll
, proposal
- Added
Object#__(define|lookup)[GS]etter__
, annex B ES2017
- Added
@@toPrimitive
methods to Date
and Symbol
- Fixed
%TypedArray%#slice
in Edge ~ 13 (throws with @@species
and wrapped / inherited constructor)
- Some other minor fixes
2.1.5 - 2016.03.12
- Improved support NodeJS domains in
Promise#then
, #180
- Added fallback for
Date#toJSON
bug in Qt Script, #173
2.1.4 - 2016.03.08
- Added fallback for
Symbol
polyfill in Qt Script, #173
- Added one more fallback for IE11
Script Access Denied
error with iframes, #165
2.1.3 - 2016.02.29
2.1.2 - 2016.02.29
- Some minor
Promise
fixes:
- Browsers
rejectionhandled
event better HTML spec complaint
- Errors in unhandled rejection handlers should not cause any problems
- Fixed typo in feature detection
2.1.1 - 2016.02.22
- Some
Promise
improvements:
- Feature detection:
- Added detection unhandled rejection tracking support - now it’s available everywhere, #140
- Added detection
@@species
pattern support for completely correct subclassing
- Removed usage
Object.setPrototypeOf
from feature detection and noisy console message about it in FF
Promise.all
fixed for some very specific cases
2.1.0 - 2016.02.09
- API:
- ES5 polyfills are split and logic, used in other polyfills, moved to internal modules
- All entry point works in ES3 environment like IE8- without
core-js/(library/)es5
- Added all missed single entry points for ES5 polyfills
- Separated ES5 polyfills moved to the ES6 namespace. Why?
- Mainly, for prevent duplication features in different namespaces - logic of most required ES5 polyfills changed in ES6+:
- Already added changes for:
Object
statics - should accept primitives, new whitespaces lists in String#trim
, parse(Int|float)
, RegExp#toString
logic, String#split
, etc
- Should be changed in the future:
@@species
and ToLength
logic in Array
methods, Date
parsing, Function#bind
, etc
- Should not be changed only several features like
Array.isArray
and Date.now
- Some ES5 polyfills required for modern engines
- All old entry points should work fine, but in the next major release API can be changed
Object.getOwnPropertyDescriptors
moved to the stage 3, January TC39 meeting
- Added
umd
option for custom build process, #169
- Returned entry points for
Array
statics, removed in 2.0
, for compatibility with babel
6
and for future fixes
- Deprecated:
- New Features:
- Added
Reflect
metadata API as a pre-strawman feature, #152:
Reflect.defineMetadata
Reflect.deleteMetadata
Reflect.getMetadata
Reflect.getMetadataKeys
Reflect.getOwnMetadata
Reflect.getOwnMetadataKeys
Reflect.hasMetadata
Reflect.hasOwnMetadata
Reflect.metadata
- Implementation / fixes
Date#toJSON
- Fixes for
parseInt
and Number.parseInt
- Fixes for
parseFloat
and Number.parseFloat
- Fixes for
RegExp#toString
- Fixes for
Array#sort
- Fixes for
Number#toFixed
- Fixes for
Number#toPrecision
- Additional fixes for
String#split
(RegExp#@@split
)
- Improvements:
- Correct subclassing wrapped collections,
Number
and RegExp
constructors with native class syntax
- Correct support
SharedArrayBuffer
and buffers from other realms in typed arrays wrappers
- Additional validations for
Object.{defineProperty, getOwnPropertyDescriptor}
and Reflect.defineProperty
- Bug Fixes:
- Fixed some cases
Array#lastIndexOf
with negative second argument
2.0.3 - 2016.01.11
- Added fallback for V8 ~ Chrome 49
Promise
subclassing bug causes unhandled rejection on feature detection, #159
- Added fix for very specific environments with global
window === null
2.0.2 - 2016.01.04
- Temporarily removed
length
validation from Uint8Array
constructor wrapper. Reason - bug in ws
module (-> socket.io
) which passes to Buffer
constructor -> Uint8Array
float and uses the V8
bug for conversion to int (by the spec should be thrown an error). It creates problems for many people. I hope, it will be returned after fixing this bug in V8
.
2.0.1 - 2015.12.31
- Forced usage
Promise.resolve
polyfill in the library
version for correct work with wrapper
Object.assign
should be defined in the strict mode -> throw an error on extension non-extensible objects, #154
2.0.0 - 2015.12.24
- Added implementations and fixes Typed Arrays-related features
ArrayBuffer
, ArrayBuffer.isView
, ArrayBuffer#slice
DataView
with all getter / setter methods
Int8Array
, Uint8Array
, Uint8ClampedArray
, Int16Array
, Uint16Array
, Int32Array
, Uint32Array
, Float32Array
and Float64Array
constructors
%TypedArray%.{for, of}
, %TypedArray%#{copyWithin, every, fill, filter, find, findIndex, forEach, indexOf, includes, join, lastIndexOf, map, reduce, reduceRight, reverse, set, slice, some, sort, subarray, values, keys, entries, @@iterator, ...}
- Added
System.global
, proposal, November TC39 meeting
- Added
Error.isError
, proposal, November TC39 meeting
- Added
Math.{iaddh, isubh, imulh, umulh}
, proposal
RegExp.escape
moved from the es7
to the non-standard core
namespace, July TC39 meeting - too slow, but it’s condition of stability, #116
Promise
- Some improvements collections polyfills
O(1)
and preventing possible leaks with frozen keys, #134
- Correct observable state object keys
- Renamed
String#{padLeft, padRight}
-> String#{padStart, padEnd}
, proposal, November TC39 meeting (they want to rename it on each meeting?O_o), #132
- Added
String#{trimStart, trimEnd}
as aliases for String#{trimLeft, trimRight}
, proposal, November TC39 meeting
- Added annex B HTML methods - ugly, but also the part of the spec
- Added little fix for
Date#toString
- new Date(NaN).toString()
should be 'Invalid Date'
- Added
{keys, values, entries, @@iterator}
methods to DOM collections which should have iterable interface or should be inherited from Array
- NodeList
, DOMTokenList
, MediaList
, StyleSheetList
, CSSRuleList
.
- Removed Mozilla
Array
generics - deprecated and will be removed from FF, looks like strawman is dead, available alternative shim
- Removed
core.log
module
- CommonJS API
- Custom build from external scripts moved to the separate package for preventing problems with dependencies
- Changed
$
prefix for internal modules file names because Team Foundation Server does not support it, #129
- Additional fix for
SameValueZero
in V8 ~ Chromium 39-42 collections
- Additional fix for FF27
Array
iterator
- Removed usage shortcuts for
arguments
object - old WebKit bug, #150
{Map, Set}#forEach
non-generic, #144
- Many other improvements
1.2.6 - 2015.11.09
- Reject with
TypeError
on attempt resolve promise itself
- Correct behavior with broken
Promise
subclass constructors / methods
- Added
Promise
-based fallback for microtask
- Fixed V8 and FF
Array#{values, @@iterator}.name
- Fixed IE7-
[1, 2].join(undefined) -> '1,2'
- Some other fixes / improvements / optimizations
1.2.5 - 2015.11.02
- Some more
Number
constructor fixes:
- Fixed V8 ~ Node 0.8 bug:
Number('+0x1')
should be NaN
- Fixed
Number(' 0b1\n')
case, should be 1
- Fixed
Number()
case, should be 0
1.2.4 - 2015.11.01
- Fixed
Number('0b12') -> NaN
case in the shim
- Fixed V8 ~ Chromium 40- bug -
Weak(Map|Set)#{delete, get, has}
should not throw errors #124
- Some other fixes and optimizations
1.2.3 - 2015.10.23
- Fixed some problems related old V8 bug
Object('a').propertyIsEnumerable(0) // => false
, for example, Object.assign({}, 'qwe')
from the last release
- Fixed
.name
property and Function#toString
conversion some polyfilled methods
- Fixed
Math.imul
arity in Safari 8-
1.2.2 - 2015.10.18
- Improved optimisations for V8
- Fixed build process from external packages, #120
- One more
Object.{assign, values, entries}
fix for very specific case
1.2.1 - 2015.10.02
- Replaced fix
JSON.stringify
+ Symbol
behavior from .toJSON
method to wrapping JSON.stringify
- little more correct, compat-table/642
- Fixed typo which broke tasks scheduler in WebWorkers in old FF, #114
1.2.0 - 2015.09.27
1.1.4 - 2015.09.05
1.1.3 - 2015.08.29
1.1.2 - 2015.08.28
- Added
toJSON
method to Symbol
polyfill and to MS Edge implementation for expected JSON.stringify
result w/o patching this method
- Replaced
Reflect.construct
implementations w/o correct support third argument
- Fixed
global
detection with changed document.domain
in ~IE8, #100
1.1.1 - 2015.08.20
- Added more correct microtask implementation for
Promise
1.1.0 - 2015.08.17
1.0.1 - 2015.07.31
- Some fixes for final MS Edge, replaced broken native
Reflect.defineProperty
- Some minor fixes and optimizations
- Changed compression
client/*.min.js
options for safe Function#name
and Function#length
, should be fixed #92
1.0.0 - 2015.07.22
- Added logic for well-known symbols:
Symbol.match
Symbol.replace
Symbol.split
Symbol.search
- Actualized and optimized work with iterables:
- Uses enumerable properties in shimmed instances - collections, iterators, etc for optimize performance
- Added support native constructors to
Reflect.construct
with 2 arguments
- Added support native constructors to
Function#bind
shim with new
- Removed obsolete
.clear
methods native Weak
-collections
- Maximum modularity, reduced minimal custom build size, separated into submodules:
- Many other optimizations
- Final cleaning non-standard features
- Moved
$for
to separate library. This work for syntax - for-of
loop and comprehensions
- Moved
Date#{format, formatUTC}
to separate library. Standard way for this - ECMA-402
- Removed
Math
methods from Number.prototype
. Slight sugar for simple Math
methods calling
- Removed
{Array#, Array, Dict}.turn
- Removed
core.global
- Uses
ToNumber
instead of ToLength
in Number Iterator
, Array.from(2.5)
will be [0, 1, 2]
instead of [0, 1]
- Fixed #85 - invalid
Promise
unhandled rejection message in nested setTimeout
- Fixed #86 - support FF extensions
- Fixed #89 - behavior
Number
constructor in strange case
0.9.18 - 2015.06.17
0.9.17 - 2015.06.14
0.9.16 - 2015.06.11
0.9.15 - 2015.06.09
- Collections from
library
version return wrapped native instances
- Fixed collections prototype methods in
library
version
- Optimized
Math.hypot
0.9.14 - 2015.06.04
0.9.13 - 2015.05.25
0.9.12 - 2015.05.24
- Different instances
core-js
should use / recognize the same symbols
- Some fixes
0.9.11 - 2015.05.18
- Simplified custom build
- Added custom build js api
- Added
grunt-cli
to devDependencies
for npm run grunt
- Some fixes
0.9.10 - 2015.05.16
- Wrapped
Function#toString
for correct work wrapped methods / constructors with methods similar to the lodash
isNative
- Added proto versions of methods to export object in
default
version for consistency with library
version
0.9.9 - 2015.05.14
0.9.8 - 2015.05.12
0.9.7 - 2015.05.07
0.9.6 - 2015.05.01
0.9.5 - 2015.04.30
- Added cap for
Function#@@hasInstance
- Some fixes and optimizations
0.9.4 - 2015.04.27
0.9.3 - 2015.04.26
- Some fixes and optimizations
0.9.2 - 2015.04.25
- More correct
Promise
unhandled rejection tracking and resolving / rejection priority
0.9.1 - 2015.04.25
- Fixed
__proto__
-based Promise
subclassing in some environments
0.9.0 - 2015.04.24
- Added correct symbols descriptors
- Fixed behavior
Object.{assign, create, defineProperty, defineProperties, getOwnPropertyDescriptor, getOwnPropertyDescriptors}
with symbols
- Added single entry points for
Object.{create, defineProperty, defineProperties}
- Added
Map#toJSON
- Removed non-standard methods
Object#[_]
and Function#only
- they solves syntax problems, but now in compilers available arrows and in near future will be available available bind syntax
- Removed non-standard undocumented methods
Symbol.{pure, set}
- Some fixes and internal changes
0.8.4 - 2015.04.18
- Uses
webpack
instead of browserify
for browser builds - more compression-friendly result
0.8.3 - 2015.04.14
- Fixed
Array
statics with single entry points
0.8.2 - 2015.04.13
0.8.1 - 2015.04.03
0.8.0 - 2015.04.02
0.7.2 - 2015.03.09
0.7.1 - 2015.03.07
0.7.0 - 2015.03.06
0.6.1 - 2015.02.24
0.6.0 - 2015.02.23
- Added support safe closing iteration - calling
iterator.return
on abort iteration, if it exists
- Added basic support
Promise
unhandled rejection tracking in shim
- Added
Object.getOwnPropertyDescriptors
- Removed
console
cap - creates too many problems
- Restructuring namespaces
- Some fixes
0.5.4 - 2015.02.15
0.5.3 - 2015.02.14
0.5.2 - 2015.02.10
0.5.1 - 2015.02.09
0.5.0 - 2015.02.08
- Systematization of modules
- Splitted
es6
module
- Splitted
console
module: web.console
- only cap for missing methods, core.log
- bound methods & additional features
- Added
delay
method
- Some fixes
0.4.10 - 2015.01.28
0.4.9 - 2015.01.27
0.4.8 - 2015.01.25
0.4.7 - 2015.01.25
0.4.6 - 2015.01.21
0.4.5 - 2015.01.16
0.4.4 - 2015.01.11
0.4.3 - 2015.01.10
- Added
Function
instances name
property for IE9+
0.4.2 - 2015.01.10
Object
static methods accept primitives
RegExp
constructor can alter flags (IE9+)
- Added
Array.prototype[Symbol.unscopables]
0.4.1 - 2015.01.05
0.4.0 - 2015.01.03
- Added
es6.reflect
module:
- Added
Reflect.apply
- Added
Reflect.construct
- Added
Reflect.defineProperty
- Added
Reflect.deleteProperty
- Added
Reflect.enumerate
- Added
Reflect.get
- Added
Reflect.getOwnPropertyDescriptor
- Added
Reflect.getPrototypeOf
- Added
Reflect.has
- Added
Reflect.isExtensible
- Added
Reflect.preventExtensions
- Added
Reflect.set
- Added
Reflect.setPrototypeOf
core-js
methods now can use external Symbol.iterator
polyfill
- Some fixes
0.3.3 - 2014.12.28
0.3.2 - 2014.12.25
- Added cap for ES5 freeze-family methods
- Fixed
console
bug
0.3.1 - 2014.12.23
0.3.0 - 2014.12.23
0.2.5 - 2014.12.20
console
no longer shortcut for console.log
(compatibility problems)
- Some fixes
0.2.4 - 2014.12.17
- Better compliance of ES6
- Added
Math.fround
(IE10+)
- Some fixes
0.2.3 - 2014.12.15
- Symbols:
- Added option to disable addition setter to
Object.prototype
for Symbol polyfill:
- Added
Symbol.useSimple
- Added
Symbol.useSetter
- Added cap for well-known Symbols:
- Added
Symbol.hasInstance
- Added
Symbol.isConcatSpreadable
- Added
Symbol.match
- Added
Symbol.replace
- Added
Symbol.search
- Added
Symbol.species
- Added
Symbol.split
- Added
Symbol.toPrimitive
- Added
Symbol.unscopables
0.2.2 - 2014.12.13
0.2.1 - 2014.12.12
0.2.0 - 2014.12.06
- Added
es7.proposals
and es7.abstract-refs
modules
- Added
String#at
- Added real
String Iterator
, older versions used Array Iterator
- Added abstract references support:
- Added
Symbol.referenceGet
- Added
Symbol.referenceSet
- Added
Symbol.referenceDelete
- Added
Function#@@referenceGet
- Added
Map#@@referenceGet
- Added
Map#@@referenceSet
- Added
Map#@@referenceDelete
- Added
WeakMap#@@referenceGet
- Added
WeakMap#@@referenceSet
- Added
WeakMap#@@referenceDelete
- Added
Dict.{...methods}[@@referenceGet]
- Removed deprecated
.contains
methods
- Some fixes
0.1.5 - 2014.12.01
0.1.4 - 2014.11.27
0.1.3 - 2014.11.20
0.1.2 - 2014.11.19
0.1.1 - 2014.11.18