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@es-shims

ECMAScript Shims

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

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  1. es5-shim Public

    ECMAScript 5 compatibility shims for legacy (and modern) JavaScript engines

    JavaScript 7.1k 892

  2. es6-shim Public

    Forked from paulmillr/es6-shim

    ECMAScript 6 compatibility shims for legacy JS engines

    JavaScript 682 85

  3. globalThis Public

    ECMAScript spec-compliant polyfill/shim for `globalThis`.

    JavaScript 156 13

  4. Promise.prototype.finally Public

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

    JavaScript 138 9

  5. Promise.allSettled Public

    ES Proposal spec-compliant shim for Promise.allSettled

    JavaScript 97 10

  6. es-shim-api Public

    API contract, and rudimentary tests, for modules that conform to the *es-shim API*

    JavaScript 79 5

Repositories

Showing 10 of 166 repositories
  • es-abstract Public Forked from ljharb/es-abstract

    ECMAScript spec abstract operations.

    JavaScript 6 MIT 37 0 0 Updated May 17, 2025
  • Array.prototype.slice Public

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

    JavaScript 1 MIT 1 1 0 Updated May 16, 2025
  • TypedArray.prototype.slice Public

    ES spec-compliant shim for TypedArray.prototype.slice

    JavaScript 3 MIT 0 1 0 Updated May 16, 2025
  • Set.prototype.difference Public

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

    JavaScript 7 MIT 0 1 0 Updated May 16, 2025
  • object.assign Public Forked from ljharb/object.assign

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

    JavaScript 9 MIT 22 0 0 Updated May 16, 2025
  • Map.groupBy Public

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

    JavaScript 1 MIT 0 1 0 Updated May 16, 2025
  • DisposableStack Public

    An ESnext spec-compliant `DisposableStack`, `AsyncDisposableStack`, `Symbol.dispose`, and `Symbol.asyncDispose` shim/polyfill/replacement that works as far down as ES3.

    JavaScript 32 MIT 4 1 0 Updated May 12, 2025
  • es-arraybuffer-base64 Public

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

    JavaScript 8 MIT 1 1 0 Updated May 12, 2025
  • Array.prototype.with Public

    An ESnext spec-compliant `Array.prototype.with` shim/polyfill/replacement that works as far down as ES3.

    JavaScript 0 MIT 2 1 0 Updated May 12, 2025
  • Map.prototype.getOrInsert Public

    ES Proposal spec-compliant shim for Map.prototype.getOrInsert

    JavaScript 0 MIT 0 1 0 Updated May 9, 2025
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