Repositories list

• iterator-helpers

  Public

  es-shims/iterator-helpers’s past year of commit activity
  An ESnext spec-compliant iterator helpers shim/polyfill/replacement that works as far down as ES3.

  javascriptpolyfillmap+ 16

  javascriptpolyfillmapfilterecmascriptiteratordropfindforeachreduce+ 9

  JavaScript

  •

  MIT License

  •22 forks•2020 stars•11 issue•00 pull requests•Updated Apr 13, 2026Apr 13, 2026

• es-abstract

  Public

  es-shims/es-abstract’s past year of commit activity
  ECMAScript spec abstract operations.

  JavaScript

  •

  MIT License

  •3030 forks•66 stars•00 issues•11 pull request•Updated Apr 7, 2026Apr 7, 2026

• es-shim-api

  Public

  es-shims/es-shim-api’s past year of commit activity
  API contract, and rudimentary tests, for modules that conform to the *es-shim API*

  es-shim

  es-shim

  JavaScript

  •

  MIT License

  •44 forks•8282 stars•11 issue•00 pull requests•Updated Apr 7, 2026Apr 7, 2026

• object-is

  Public

  es-shims/object-is’s past year of commit activity
  ES6-compliant shim for Object.is - differentiates between -0 and +0, and can compare to NaN.

  JavaScript

  •

  MIT License

  •77 forks•2525 stars•11 issue•00 pull requests•Updated Mar 18, 2026Mar 18, 2026

• object-keys

  Public

  es-shims/object-keys’s past year of commit activity
  Object.keys shim

  JavaScript

  •

  MIT License

  •1515 forks•66 stars•00 issues•00 pull requests•Updated Mar 18, 2026Mar 18, 2026

• get-own-property-symbols

  Public

  es-shims/get-own-property-symbols’s past year of commit activity
  ES6 Object.getOwnPropertySymbols partial polyfill

  JavaScript

  •

  MIT License

  •99 forks•2323 stars•33 issues•11 pull request•Updated Mar 17, 2026Mar 17, 2026

• TypedArray.prototype.at

  Public

  es-shims/TypedArray.prototype.at’s past year of commit activity
  An ES5 spec-compliant `TypedArray.prototype.at` shim/polyfill/replacement that works as far down as ES3

  JavaScript

  •

  MIT License

  •00 forks•11 star•11 issue•00 pull requests•Updated Mar 16, 2026Mar 16, 2026

• Math.atanh

  Public

  es-shims/Math.atanh’s past year of commit activity
  An ES-spec-compliant Math.atanh shim/polyfill/replacement that works as far down as ES3

  JavaScript

  •

  MIT License

  •22 forks•33 stars•11 issue•00 pull requests•Updated Mar 16, 2026Mar 16, 2026

• parseInt

  Public

  es-shims/parseInt’s past year of commit activity
  An ES-spec-compliant `parseInt` shim/polyfill/replacement that works as far down as ES3

  javascriptpolyfillecmascript+ 3

  javascriptpolyfillecmascriptshimparseintes-shims

  JavaScript

  •

  MIT License

  •22 forks•33 stars•11 issue•00 pull requests•Updated Mar 16, 2026Mar 16, 2026

• Set.prototype.intersection

  Public

  es-shims/Set.prototype.intersection’s past year of commit activity
  An ESnext spec-compliant `Set.prototype.intersection` shim/polyfill/replacement that works as far down as ES3

  javascriptpolyfillset+ 5

  javascriptpolyfillsetecmascriptintersectionshimes-shimses-shim

  JavaScript

  •

  MIT License

  •11 fork•77 stars•11 issue•00 pull requests•Updated Mar 16, 2026Mar 16, 2026

• String.prototype.padEnd

  Public
  ES spec-compliant shim for String.prototype.padEnd

  JavaScript

  •

  MIT License

  •44 forks•1010 stars•11 issue•00 pull requests•Updated Mar 16, 2026Mar 16, 2026

• WeakMap.prototype.getOrInsert

  Public
  ES Proposal spec-compliant shim for WeakMap.prototype.getOrInsert

  JavaScript

  •

  MIT License

  •00 forks•00 stars•11 issue•00 pull requests•Updated Mar 16, 2026Mar 16, 2026

• Math.clz32

  Public
  An ES-spec-compliant Math.clz32 shim/polyfill/replacement that works as far down as ES3

  JavaScript

  •

  MIT License

  •22 forks•33 stars•11 issue•00 pull requests•Updated Mar 10, 2026Mar 10, 2026

• Math.asinh

  Public
  An ES-spec-compliant Math.asinh shim/polyfill/replacement that works as far down as ES3

  JavaScript

  •

  MIT License

  •11 fork•00 stars•11 issue•00 pull requests•Updated Mar 10, 2026Mar 10, 2026

• .github

  Public
  .github repo for es-shims org

  JavaScript

  •

  MIT License

  •22 forks•11 star•00 issues•00 pull requests•Updated Feb 25, 2026Feb 25, 2026

• Promise.prototype.finally

  Public
  ES Proposal spec-compliant shim for Promise.prototype.finally

  JavaScript

  •

  MIT License

  •99 forks•138138 stars•22 issues•00 pull requests•Updated Jan 29, 2026Jan 29, 2026

• Promise.withResolvers

  Public
  ES Proposal spec-compliant shim for Promise.withResolvers

  javascriptpolyfillpromise+ 6

  javascriptpolyfillpromiseecmascriptshimdeferreddeferes-shimswithresolvers

  JavaScript

  •

  MIT License

  •22 forks•99 stars•11 issue•00 pull requests•Updated Jan 16, 2026Jan 16, 2026

• Array.prototype.push

  Public
  An ES spec-compliant `Array.prototype.push` shim/polyfill/replacement that works as far down as ES3.

  javascriptpolyfillarray+ 2

  javascriptpolyfillarrayecmascriptshim

  JavaScript

  •

  MIT License

  •22 forks•00 stars•11 issue•00 pull requests•Updated Jan 14, 2026Jan 14, 2026

• es-arraybuffer-base64

  Public
  An ES-spec-compliant shim/polyfill/replacement for ArrayBuffer base64 methods that works as far down as ES3

  javascriptbase64ecmascript+ 1

  javascriptbase64ecmascriptarraybuffer

  JavaScript

  •

  MIT License

  •44 forks•1111 stars•22 issues•00 pull requests•Updated Jan 13, 2026Jan 13, 2026

• Map

  Public
  An ES2015 spec-compliant `Map` shim/polyfill/replacement that works as far down as ES3.

  javascriptpolyfillmap+ 3

  javascriptpolyfillmapecmascriptshimes-shims

  JavaScript

  •

  MIT License

  •11 fork•33 stars•00 issues•00 pull requests•Updated Jan 13, 2026Jan 13, 2026

• Symbol.prototype.description

  Public
  Spec-compliant shim for Symbol.prototype.description proposal.

  javascriptpolyfillecmascript+ 3

  javascriptpolyfillecmascriptdescriptionshimsymbol

  JavaScript

  •

  MIT License

  •11 fork•66 stars•11 issue•00 pull requests•Updated Jan 13, 2026Jan 13, 2026

• String.raw

  Public
  An ES-spec-compliant String.raw shim/polyfill/replacement that works as far down as ES3

  JavaScript

  •

  MIT License

  •22 forks•44 stars•11 issue•00 pull requests•Updated Jan 13, 2026Jan 13, 2026

• String.prototype.trimStart

  Public
  ES2019 spec-compliant String.prototype.trimStart shim

  polyfilles6string+ 6

  polyfilles6stringproposaltrimes7emcascripttc39es8

  JavaScript

  •

  MIT License

  •33 forks•44 stars•11 issue•00 pull requests•Updated Jan 13, 2026Jan 13, 2026

• String.prototype.trimLeft

  Public
  ES2019 spec-compliant shim for String.prototype.trimLeft.

  JavaScript

  •

  MIT License

  •44 forks•88 stars•00 issues•00 pull requests•Updated Jan 13, 2026Jan 13, 2026

• String.prototype.trimEnd

  Public
  ES2019 spec-compliant String.prototype.trimEnd shim

  polyfilles6string+ 6

  polyfilles6stringproposalecmascripttrimes7tc39es8

  JavaScript

  •

  MIT License

  •55 forks•55 stars•11 issue•11 pull request•Updated Jan 13, 2026Jan 13, 2026

• Set

  Public
  An ESnext spec-compliant `Set` shim/polyfill/replacement that works as far down as ES3.

  javascriptpolyfillset+ 3

  javascriptpolyfillsetecmascriptshimes-shims

  JavaScript

  •

  MIT License

  •11 fork•22 stars•00 issues•00 pull requests•Updated Jan 13, 2026Jan 13, 2026

• Set.prototype.difference

  Public
  An ESnext spec-compliant `Set.prototype.difference` shim/polyfill/replacement that works as far down as ES3

  javascriptpolyfillset+ 4

  javascriptpolyfillsetecmascriptshimdifferencees-shims

  JavaScript

  •

  MIT License

  •11 fork•66 stars•11 issue•00 pull requests•Updated Jan 13, 2026Jan 13, 2026

• Reflect.apply

  Public
  An ES-spec-compliant Reflect.apply shim/polyfill/replacement that works as far down as ES3

  javascriptpolyfillecmascript+ 3

  javascriptpolyfillecmascriptreflectshimapply

  JavaScript

  •

  MIT License

  •11 fork•33 stars•11 issue•00 pull requests•Updated Jan 13, 2026Jan 13, 2026

• Object.getOwnPropertyDescriptors

  Public

  es-shims/Object.getOwnPropertyDescriptors’s past year of commit activity
  Spec-compliant shim for `Object.getOwnPropertyDescriptors` that works in ES5.

  javascriptpolyfillobject+ 4

  javascriptpolyfillobjectecmascriptshimgetownpropertydescriptorgetownpropertydescriptors

  JavaScript

  •

  MIT License

  •88 forks•2020 stars•22 issues•00 pull requests•Updated Jan 13, 2026Jan 13, 2026

• Object.defineProperties

  Public
  ES spec-compliant `Object.defineProperties` shim/polyfill/replacement that works as far down as ES3

  javascriptpolyfillobject+ 4

  javascriptpolyfillobjectecmascriptshimdefinepropertydefineproperties

  JavaScript

  •

  MIT License

  •11 fork•33 stars•11 issue•00 pull requests•Updated Jan 13, 2026Jan 13, 2026