Changelog

2.6.12 [LEGACY] - 2020.11.26

• Added code points / code units explicit feature detection in String#at for preventing breakage code which use obsolete String#at proposal polyfill
• Added OPEN_SOURCE_CONTRIBUTOR detection in postinstall
• Added Drone CI detection in postinstall

2.6.11 [LEGACY] - 2019.12.09

• Returned usage of node -e in postinstall scripts for better cross-platform compatibility, #582
• Improved CI detection in the postinstall script, #707

2.6.10 [LEGACY] - 2019.10.13

• Show similar postinstall messages only once per npm i, #597

2.6.9 [LEGACY] - 2019.05.27

• Some fixes and improvements of the postinstall script like support npm color config (#556) or adding support of ADBLOCK env variable

2.6.8 [LEGACY] - 2019.05.22

• Added a workaround of a strange npx bug on postinstall, #551

2.6.7 [LEGACY] - 2019.05.21

• Added one more workaround of alternative not completely correct Symbol polyfills, #550, #554

2.6.6 [LEGACY] - 2019.05.20

• Fixed IE8- non-enumerable properties support in Object.{ assign, entries, values }, #541
• Fixed support of primitives in Object.getOwnPropertySymbols in Chrome 38 / 39, #539
• Show a message on postinstall

2.6.5 - 2019.02.15

• Fixed buggy String#padStart and String#padEnd mobile Safari implementations, #414.

2.6.4 - 2019.02.07

• Added a workaround against crushing an old IE11.0.9600.16384 build, #485.

2.6.3 - 2019.01.22

• Added a workaround for babel-minify bug, #479

2.6.2 - 2019.01.10

• Fixed handling of $ in String#replace, #471

2.6.1 - 2018.12.18

• Fixed an issue with minified version, #463

2.6.0 - 2018.12.05

• Add direct .exec calling to RegExp#{@@replace, @@split, @@match, @@search}. Also, added fixes for RegExp#exec method. #411, #428, #434, #435, #453, #458, thanks @nicolo-ribaudo.

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:
• Object.getOwnPropertyDescriptors to stage 4 (ES2017)
• String padding to stage 4 (ES2017)
• global to stage 3
• String trimming to stage 2
• 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

• Some fixes for issues like #159, #186, #194, #207

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

• Added asap for enqueuing microtasks, stage 0 proposal
• Added well-known symbol Symbol.asyncIterator for stage 2 async iteration proposal
• Added well-known symbol Symbol.observable for stage 1 observables proposal
• String#{padStart, padEnd} returns original string if filler is empty string, TC39 meeting notes
• Object.values and Object.entries moved to stage 4 from 3, TC39 meeting notes
• System.global moved to stage 2 from 1, TC39 meeting notes
• Map#toJSON and Set#toJSON rejected and will be removed from the next major release, TC39 meeting notes
• Error.isError withdrawn and will be removed from the next major release, TC39 meeting notes
• Added fallback for Function#name on non-extensible functions and functions with broken toString conversion, #193

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

• Added fallback for es6-promise package bug, #176

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:
• Reflect.enumerate deprecated and will be removed from the next major release, January TC39 meeting
• 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 performance optimisations
• Added basic support rejectionHandled event / onrejectionhandled handler to the polyfill
• Removed usage @@species from Promise.{all, race}, November TC39 meeting
• 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
• Added entry points for virtual methods
• Added entry points for stages proposals
• Some other minor changes
• 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

• Added browser Promise rejection hook, #106
• Added correct IsRegExp logic to String#{includes, startsWith, endsWith} and RegExp constructor, @@match case, example
• Updated String#leftPad with proposal: string filler truncated from the right side
• Replaced V8 Object.assign - its properties order not only incorrect, it is non-deterministic and it causes some problems
• Fixed behavior with deleted in getters properties for Object.{assign,entries, values}, example
• Fixed Math.sinh with very small numbers in V8 near Chromium 38
• Some other fixes and optimizations

1.1.4 - 2015.09.05

• Fixed support symbols in FF34-35 Object.assign
• Fixed collections iterators in FF25-26
• Fixed non-generic WebKit Array.of
• Some other fixes and optimizations

1.1.3 - 2015.08.29

• Fixed support Node.js domains in Promise, #103

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

• Updated string padding to actual proposal - renamed, minor internal changes:
• String#lpad -> String#padLeft
• String#rpad -> String#padRight
• Added string trim functions - proposal, defacto standard - required only for IE11- and fixed for some old engines:
• String#trimLeft
• String#trimRight
• String#trim fixed for some engines by es6 spec and moved from es5 to single es6 module
• Splitted es6.object.statics-accept-primitives
• Caps for freeze-family Object methods moved from es5 to es6 namespace and joined with es6 wrappers
• es5 namespace also includes modules, moved to es6 namespace - you can use it as before
• Increased MessageChannel priority in $.task, #95
• Does not get global.Symbol on each getting iterator, if you wanna use alternative Symbol shim - add it before core-js
• Reflect.construct optimized and fixed for some cases
• Simplified Reflect.enumerate, see this question
• Some corrections in Math.acosh
• Fixed Math.imul for old WebKit
• Some fixes in string / RegExp well-known symbols logic
• Some other fixes and optimizations

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:
• Optimized Map, Set, WeakMap, WeakSet constructors, Promise.all, Promise.race for default Array Iterator
• Optimized Array.from for default Array Iterator
• Added core.getIteratorMethod helper
• 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:
• es6.reflect
• es6.regexp
• es6.math
• es6.number
• es7.object.to-array
• core.object
• core.string
• core.iter-helpers
• Internal modules ($, $.iter, etc)
• 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

• Removed / from RegExp.escape escaped characters

0.9.17 - 2015.06.14

• Updated RegExp.escape to the latest proposal
• Fixed conflict with webpack dev server + IE buggy behavior

0.9.16 - 2015.06.11

• More correct order resolving thenable in Promise polyfill
• Uses polyfill instead of buggy V8 Promise

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

• Updated Promise.resolve behavior
• Added fallback for IE11 buggy Object.getOwnPropertyNames + iframe
• Some other fixes

0.9.13 - 2015.05.25

• Added fallback for Symbol polyfill for old Android
• Some other fixes

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

• Wrapped Object#propertyIsEnumerable for Symbol polyfill
• Added proto versions of methods to library for ES7 bind syntax
• Some other fixes

0.9.8 - 2015.05.12

• Fixed Math.hypot with negative arguments
• Added Object#toString.toString as fallback for lodash isNative

0.9.7 - 2015.05.07

• Added support DOM collections to IE8- Array#slice

0.9.6 - 2015.05.01

• Added String#lpad, String#rpad

0.9.5 - 2015.04.30

• Added cap for Function#@@hasInstance
• Some fixes and optimizations

0.9.4 - 2015.04.27

• Fixed RegExp constructor

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

• Math.fround now also works in IE9-
• Added Set#toJSON
• Some optimizations and fixes

0.8.1 - 2015.04.03

• Fixed Symbol.keyFor

0.8.0 - 2015.04.02

• Changed CommonJS API
• Splitted and renamed some modules
• Added support ES3 environment (ES5 polyfill) to all default versions - size increases slightly (+ ~4kb w/o gzip), many issues disappear, if you don't need it - simply include only required namespaces / features / modules
• Removed abstract references support - proposal has been superseded =\
• $for.isIterable -> core.isIterable, $for.getIterator -> core.getIterator, temporary available in old namespace
• Fixed iterators support in v8 Promise.all and Promise.race
• Many other fixes

0.7.2 - 2015.03.09

• Some fixes

0.7.1 - 2015.03.07

• Some fixes

0.7.0 - 2015.03.06

• Rewritten and splitted into CommonJS modules

0.6.1 - 2015.02.24

• Fixed support Object.defineProperty with accessors on DOM elements on IE8

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

• Some fixes

0.5.3 - 2015.02.14

• Added support binary and octal literals to Number constructor
• Added Date#toISOString

0.5.2 - 2015.02.10

• Some fixes

0.5.1 - 2015.02.09

• Some fixes

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

• Object.getOwnPropertySymbols polyfill returns array of wrapped keys

0.4.9 - 2015.01.27

• FF20-24 fix

0.4.8 - 2015.01.25

• Some collections fixes

0.4.7 - 2015.01.25

• Added support frozen objects as collections keys

0.4.6 - 2015.01.21

• Added Object.getOwnPropertySymbols
• Added NodeList.prototype[@@iterator]
• Added basic @@species logic - getter in native constructors
• Removed Function#by
• Some fixes

0.4.5 - 2015.01.16

• Some fixes

0.4.4 - 2015.01.11

• Enabled CSP support

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

• Some fixes

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

• Console cap excluded from node.js default builds

0.3.2 - 2014.12.25

• Added cap for ES5 freeze-family methods
• Fixed console bug

0.3.1 - 2014.12.23

• Some fixes

0.3.0 - 2014.12.23

• Optimize Map & Set:
• Use entries chain on hash table
• Fast & correct iteration
• Iterators moved to es6 and es6.collections modules

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

• Added RegExp#flags (December 2014 Draft Rev 29)
• Added String.raw

0.2.1 - 2014.12.12

• Repair converting -0 to +0 in native collections

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

• Added Array#copyWithin
• Added String#codePointAt
• Added String.fromCodePoint

0.1.4 - 2014.11.27

• Added Dict.mapPairs

0.1.3 - 2014.11.20

• TC39 November meeting:
• .contains -> .includes
  • String#contains -> String#includes
  • Array#contains -> Array#includes
  • Dict.contains -> Dict.includes
• Removed WeakMap#clear
• Removed WeakSet#clear

0.1.2 - 2014.11.19

• Map & Set bug fix

0.1.1 - 2014.11.18

• Public release