ECMAScript Shims

A community host for shims and polyfills that are compliant to EcmaScript specs.

Pinned Repositories

es-shim-api
API contract, and rudimentary tests, for modules that conform to the *es-shim API*
Language:JavaScript73 7 64
es5-shim
ECMAScript 5 compatibility shims for legacy (and modern) JavaScript engines
Language:JavaScript7.1k 215 240901
es6-shim
ECMAScript 6 compatibility shims for legacy JS engines
Language:JavaScript678 31 086
es7-shim
ECMAScript 7 compatibility shims for legacy JavaScript engines
Language:JavaScript172 19 1232
globalThis
ECMAScript spec-compliant polyfill/shim for `globalThis`.
Language:JavaScript153 7 813
Object.entries
ES2017 spec-compliant shim for Object.entries
Language:JavaScript57 6 129
Object.values
ES2017 spec-compliant shim for Object.values
Language:JavaScript72 5 108
obsolete-String.prototype.at
A robust & optimized ES3-compatible polyfill for the `String.prototype.at` proposal for ECMAScript 6/7.
Language:JavaScript99 7 013
Promise.allSettled
ES Proposal spec-compliant shim for Promise.allSettled
Language:JavaScript94 5 99
Promise.prototype.finally
ES Proposal spec-compliant shim for Promise.prototype.finally
Language:JavaScript137 5 238

ECMAScript Shims's Repositories

es-shims/globalThis
ECMAScript spec-compliant polyfill/shim for `globalThis`.
Language:JavaScript153 7 813
es-shims/es-shim-api
API contract, and rudimentary tests, for modules that conform to the *es-shim API*
Language:JavaScript73 7 64
es-shims/RegExp.escape
An ESnext spec-compliant `RegExp.escape` shim/polyfill/replacement that works as far down as ES3.
Language:JavaScript36 4 22
es-shims/Array.prototype.group
An ESnext spec-compliant `Array.prototype.group` shim/polyfill/replacement that works as far down as ES3.
Language:JavaScript27 5 12
es-shims/get-own-property-symbols
ES6 Object.getOwnPropertySymbols partial polyfill
Language:JavaScript23 8 1511
es-shims/error-cause
An ES-spec-compliant shim/polyfill/replacement for the `.cause` property on all Error types that works as far down as ES3
Language:JavaScript17 5 53
es-shims/DisposableStack
An ESnext spec-compliant `DisposableStack`, `AsyncDisposableStack`, `Symbol.dispose`, and `Symbol.asyncDispose` shim/polyfill/replacement that works as far down as ES3.
Language:JavaScript16 3 53
es-shims/Object.hasOwn
Official ES spec-compliant polyfill for Object.hasOwn
Language:JavaScript13 5 43
es-shims/iterator-helpers
An ESnext spec-compliant iterator helpers shim/polyfill/replacement that works as far down as ES3.
Language:JavaScript9 4 41
es-shims/es-abstract
ECMAScript spec abstract operations.
Language:JavaScript6 5 03
es-shims/Promise.withResolvers
ES Proposal spec-compliant shim for Promise.withResolvers
Language:JavaScript5 3 1
es-shims/Array.from
A robust & optimized ES3-compatible polyfill for the `Array.from` method in ECMAScript 6.
Language:JavaScript4 4 01
es-shims/Promise.try
ES Proposal spec-compliant shim for Promise.try
Language:JavaScript43
es-shims/Set.prototype.intersection
An ESnext spec-compliant `Set.prototype.intersection` shim/polyfill/replacement that works as far down as ES3
Language:JavaScript4 4 1
es-shims/Array.prototype.findLastIndex
An ESnext spec-compliant `Array.prototype.findLastIndex` shim/polyfill/replacement that works as far down as ES3.
Language:JavaScript3 5 12
es-shims/Date
ES spec-compliant `Date` shim/polyfill/replacement that works as far down as ES3
Language:JavaScript3 4 12
es-shims/Set.prototype.difference
An ESnext spec-compliant `Set.prototype.difference` shim/polyfill/replacement that works as far down as ES3
Language:JavaScript3 4 2
es-shims/Set.prototype.union
An ESnext spec-compliant `Set.prototype.union` shim/polyfill/replacement that works as far down as ES3
Language:JavaScript3 4 1
es-shims/Math.f16round
An ES-spec-compliant Math.f16round shim/polyfill/replacement that works as far down as ES3
Language:JavaScript2 3 1
es-shims/Set.prototype.isDisjointFrom
An ESnext spec-compliant `Set.prototype.isDisjointFrom` shim/polyfill/replacement that works as far down as ES3
Language:JavaScript2 4 1
es-shims/Set.prototype.isSubsetOf
An ESnext spec-compliant `Set.prototype.isSubsetOf` shim/polyfill/replacement that works as far down as ES3
Language:JavaScript2 4 1
es-shims/Set.prototype.isSupersetOf
An ESnext spec-compliant `Set.prototype.isSupersetOf` shim/polyfill/replacement that works as far down as ES3
Language:JavaScript2 4 1
es-shims/Set.prototype.symmetricDifference
An ESnext spec-compliant `Set.prototype.symmetricDifference` shim/polyfill/replacement that works as far down as ES3
Language:JavaScript2 4 1
es-shims/.github
.github repo for es-shims org
Language:JavaScript1 3 01
es-shims/ArrayBuffer.prototype.transfer
ES Proposal spec-compliant shim for ArrayBuffer.prototype.transfer
Language:JavaScript1 3 1
es-shims/ArrayBuffer.prototype.transferToFixedLength
ES Proposal spec-compliant shim for ArrayBuffer.prototype.transferToFixedLength
Language:JavaScript1 3 1
es-shims/Map.groupBy
An ESnext spec-compliant `Map.groupBy` shim/polyfill/replacement that works as far down as ES3.
Language:JavaScript1 3 1
es-shims/Math.log1p
An ES-spec-compliant Math.log1p shim/polyfill/replacement that works as far down as ES3
Language:JavaScript11
es-shims/Object.groupBy
An ESnext spec-compliant `Object.groupBy` shim/polyfill/replacement that works as far down as ES3.
Language:JavaScript0 3 10
es-shims/Math.sumPrecise
An ES-spec-compliant Math.sumPrecise shim/polyfill/replacement that works as far down as ES3
Language:JavaScript