Repositories list

• Promise.try

  Public
  ES Proposal spec-compliant shim for Promise.try

  JavaScript

  •

  MIT License

  •4•5•0•0•Updated Jan 1, 2026Jan 1, 2026

• es-abstract

  Public
  ECMAScript spec abstract operations.

  JavaScript

  •

  MIT License

  •30•6•0•1•Updated Dec 31, 2025Dec 31, 2025

• object.assign

  Public
  ES6 spec-compliant Object.assign shim. From https://github.com/es-shims/es6-shim

  JavaScript

  •

  MIT License

  •18•9•0•0•Updated Dec 30, 2025Dec 30, 2025

• Set.prototype.intersection

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

  javascriptpolyfillset+ 5ecmascriptintersectionshimes-shimses-shim

  JavaScript

  •

  MIT License

  •1•7•1•0•Updated Dec 30, 2025Dec 30, 2025

• object-keys

  Public
  Object.keys shim

  JavaScript

  •

  MIT License

  •15•6•0•0•Updated Dec 30, 2025Dec 30, 2025

• es6-shim

  Public
  ECMAScript 6 compatibility shims for legacy JS engines

  JavaScript

  •

  MIT License

  •383•685•0•0•Updated Dec 30, 2025Dec 30, 2025

• WeakMap.prototype.getOrInsert

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

  JavaScript

  •

  MIT License

  •0•0•1•0•Updated Dec 30, 2025Dec 30, 2025

• SuppressedError

  Public
  ES Proposal spec-compliant shim for SuppressedError

  javascriptpolyfillecmascript+ 4errorshimsuppressedsuppressederror

  JavaScript

  •

  MIT License

  •2•3•1•0•Updated Dec 30, 2025Dec 30, 2025

• String.prototype.trimRight

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

  javascriptpolyfillstring+ 5ecmascripttrimshimtrimrighttrimend

  JavaScript

  •

  MIT License

  •3•8•0•0•Updated Dec 30, 2025Dec 30, 2025

• String.prototype.trim

  Public
  ES5 spec-compliant shim for String.prototype.trim

  javascriptpolyfillstring+ 3ecmascripttrimshim

  JavaScript

  •

  MIT License

  •5•13•1•1•Updated Dec 30, 2025Dec 30, 2025

• String.prototype.padStart

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

  JavaScript

  •

  MIT License

  •4•23•1•0•Updated Dec 30, 2025Dec 30, 2025

• String.prototype.padEnd

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

  JavaScript

  •

  MIT License

  •4•10•1•0•Updated Dec 30, 2025Dec 30, 2025

• String.prototype.matchAll

  Public
  Spec-compliant polyfill for String.prototype.matchAll, in ES2020

  javascriptpolyfillstring+ 6regexregexpmatchecmascriptshimmatchall

  JavaScript

  •

  MIT License

  •4•17•1•0•Updated Dec 30, 2025Dec 30, 2025

• Set.prototype.union

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

  javascriptpolyfillset+ 5ecmascriptunionshimes-shimses-shim

  JavaScript

  •

  MIT License

  •1•4•1•0•Updated Dec 30, 2025Dec 30, 2025

• RegExp.escape

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

  javascriptpolyfillregex+ 4regexpecmascriptescapeshim

  JavaScript

  •

  MIT License

  •3•44•0•0•Updated Dec 30, 2025Dec 30, 2025

• Reflect.ownKeys

  Public
  ES2015 spec-compliant shim for Reflect.ownKeys

  javascriptpolyfillecmascript+ 3reflectshimownkeys

  JavaScript

  •

  MIT License

  •1•6•1•0•Updated Dec 30, 2025Dec 30, 2025

• Promise.prototype.finally

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

  JavaScript

  •

  MIT License

  •9•138•2•0•Updated Dec 30, 2025Dec 30, 2025

• Promise.any

  Public
  ES spec-compliant shim for Promise.any

  JavaScript

  •

  MIT License

  •4•15•0•0•Updated Dec 30, 2025Dec 30, 2025

• Promise.allSettled

  Public
  ES Proposal spec-compliant shim for Promise.allSettled

  javascriptpolyfillpromise+ 5ecmascriptawaitshimallsettledes-shim

  JavaScript

  •

  MIT License

  •10•97•0•0•Updated Dec 30, 2025Dec 30, 2025

• Object.values

  Public
  ES2017 spec-compliant shim for Object.values

  javascriptpolyfillobject+ 3ecmascriptshimvalues

  JavaScript

  •

  MIT License

  •7•72•1•0•Updated Dec 30, 2025Dec 30, 2025

• Object.hasOwn

  Public
  Official ES spec-compliant polyfill for Object.hasOwn

  JavaScript

  •

  MIT License

  •4•16•1•0•Updated Dec 30, 2025Dec 30, 2025

• Object.getPrototypeOf

  Public
  An ES5 mostly-spec-compliant `Object.getPrototypeOf` sham/polyfill/replacement that works in as many engines as possible.

  javascriptpolyfillecmascript+ 2shimecmascript5

  JavaScript

  •

  MIT License

  •2•3•1•0•Updated Dec 30, 2025Dec 30, 2025

• Object.fromEntries

  Public
  Official ES spec-compliant polyfill for Object.fromEntries

  javascriptobjectecmascript+ 2entriesfromentries

  JavaScript

  •

  MIT License

  •4•33•1•0•Updated Dec 30, 2025Dec 30, 2025

• Object.entries

  Public
  ES2017 spec-compliant shim for Object.entries

  javascriptpolyfillobject+ 5ecmascriptshimvalueskeysentries

  JavaScript

  •

  MIT License

  •9•57•1•0•Updated Dec 30, 2025Dec 30, 2025

• object-is

  Public
  ES6-compliant shim for Object.is - differentiates between -0 and +0, and can compare to NaN.

  JavaScript

  •

  MIT License

  •7•25•1•0•Updated Dec 30, 2025Dec 30, 2025

• Number.parseInt

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

  javascriptpolyfillecmascript+ 4numbershimparseintes-shims

  JavaScript

  •

  MIT License

  •1•3•1•0•Updated Dec 30, 2025Dec 30, 2025

• Number.isNaN

  Public
  A `Number.isNaN` polyfill, based on the ECMAScript 6 specification.

  javascriptpolyfillecmascript+ 4numbershimnanisnan

  JavaScript

  •

  MIT License

  •1•5•0•0•Updated Dec 30, 2025Dec 30, 2025

• Number.isInteger

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

  javascriptpolyfillecmascript+ 4numbershimisintegeres-shims

  JavaScript

  •

  MIT License

  •2•4•1•0•Updated Dec 30, 2025Dec 30, 2025

• Number.isFinite

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

  javascriptpolyfillecmascript+ 4numbershimes-shimsisfinite

  JavaScript

  •

  MIT License

  •2•2•1•0•Updated Dec 30, 2025Dec 30, 2025

• Math.sign

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

  JavaScript

  •

  MIT License

  •2•4•1•0•Updated Dec 30, 2025Dec 30, 2025