Array

Modules

• es.array.from
• es.array.is-array
• es.array.of
• es.array.copy-within
• es.array.fill
• es.array.find
• es.array.find-index
• es.array.find-last
• es.array.find-last-index
• es.array.iterator
• es.array.includes
• es.array.push
• es.array.slice
• es.array.join
• es.array.unshift
• es.array.index-of
• es.array.last-index-of
• es.array.every
• es.array.some
• es.array.for-each
• es.array.map
• es.array.filter
• es.array.reduce
• es.array.reduce-right
• es.array.reverse
• es.array.sort
• es.array.flat
• es.array.flat-map
• es.array.unscopables.flat
• es.array.unscopables.flat-map
• es.array.at
• esnext.array.to-reversed
• esnext.array.to-sorted
• esnext.array.to-spliced
• esnext.array.with

Collections

Core-JS uses native collections in most cases, just fixes methods / constructor, if it's required, and in old environments uses fast polyfill (O(1) lookup).

• Map
• Set
• WeakMap
• WeakSet

Date

Modules

• es.date.to-string

ES5 features with fixes:

• es.date.now
• es.date.to-iso-string
• es.date.to-json
• es.date.to-primitive

ES Error

Modules

• es.aggregate-error
• es.aggregate-error.cause
• es.error.cause

Function

Modules

• es.function.name
• es.function.has-instance

globalThis

Module

es.global-this

Type

let globalThis: Object;

JSON

Since JSON object is missed only in very old engines like IE7-, Core-JS does not provide a full JSON polyfill, however, fix already existing implementations by the current standard, for example, well-formed JSON.stringify. JSON also fixed in other modules - for example, Symbol polyfill fixes JSON.stringify for correct work with symbols.

Math

Modules

• es.math.acosh
• es.math.asinh
• es.math.atanh
• es.math.cbrt
• es.math.clz32
• es.math.cosh
• es.math.expm1
• es.math.fround
• es.math.hypot
• es.math.imul
• es.math.log10
• es.math.log1p
• es.math.log2
• es.math.sign
• es.math.sinh
• es.math.tanh
• es.math.trunc

Number

Modules

• es.number.constructor

  Tips

  Number constructor support binary and octal literals, example:

  Number("0b1010101"); // => 85
  Number("0o7654321"); // => 2054353
  

• es.number.epsilon

• es.number.is-finite

• es.number.is-integer

• es.number.is-nan

• es.number.is-safe-integer

• es.number.max-safe-integer

• es.number.min-safe-integer

• es.number.parse-float

• es.number.parse-int

• es.number.to-exponential

• es.number.to-fixed

• es.number.to-precision

• es.parse-int

• es.parse-float

Object

Modules

• es.object.assign
• es.object.create
• es.object.define-getter
• es.object.define-property
• es.object.define-properties
• es.object.define-setter
• es.object.entries
• es.object.freeze
• es.object.from-entries
• es.object.get-own-property-descriptor
• es.object.get-own-property-descriptors
• es.object.get-own-property-names
• es.object.get-prototype-of
• es.object.has-own
• es.object.is
• es.object.is-extensible
• es.object.is-frozen
• es.object.is-sealed
• es.object.keys
• es.object.lookup-setter
• es.object.lookup-getter
• es.object.prevent-extensions
• es.object.proto
• es.object.to-string
• es.object.seal
• es.object.set-prototype-of
• es.object.values.