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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 es5-shim Public

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

    JavaScript 7.1k 894

  2. es6-shim es6-shim Public

    Forked from paulmillr/es6-shim

    ECMAScript 6 compatibility shims for legacy JS engines

    JavaScript 685 86

  3. globalThis globalThis Public

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

    JavaScript 156 13

  4. Promise.prototype.finally Promise.prototype.finally Public

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

    JavaScript 138 9

  5. Promise.allSettled Promise.allSettled Public

    ES Proposal spec-compliant shim for Promise.allSettled

    JavaScript 97 10

  6. es-shim-api es-shim-api Public

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

    JavaScript 82 4

Repositories

Showing 10 of 166 repositories
  • Number.isInteger Public

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

    es-shims/Number.isInteger’s past year of commit activity
    JavaScript 4 MIT 2 1 0 Updated Jan 3, 2026
  • Reflect.ownKeys Public

    ES2015 spec-compliant shim for Reflect.ownKeys

    es-shims/Reflect.ownKeys’s past year of commit activity
    JavaScript 6 MIT 1 1 0 Updated Jan 3, 2026
  • Promise.try Public

    ES Proposal spec-compliant shim for Promise.try

    es-shims/Promise.try’s past year of commit activity
    JavaScript 5 MIT 4 0 0 Updated Jan 2, 2026
  • es-abstract Public Forked from ljharb/es-abstract

    ECMAScript spec abstract operations.

    es-shims/es-abstract’s past year of commit activity
    JavaScript 6 MIT 38 0 1 Updated Dec 31, 2025
  • object.assign Public Forked from ljharb/object.assign

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

    es-shims/object.assign’s past year of commit activity
    JavaScript 9 MIT 22 0 0 Updated Dec 30, 2025
  • Set.prototype.intersection Public

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

    es-shims/Set.prototype.intersection’s past year of commit activity
    JavaScript 7 MIT 1 1 0 Updated Dec 30, 2025
  • object-keys Public Forked from ljharb/object-keys

    Object.keys shim

    es-shims/object-keys’s past year of commit activity
    JavaScript 6 MIT 18 0 0 Updated Dec 30, 2025
  • es6-shim Public Forked from paulmillr/es6-shim

    ECMAScript 6 compatibility shims for legacy JS engines

    es-shims/es6-shim’s past year of commit activity
    JavaScript 685 MIT 399 0 0 Updated Dec 30, 2025
  • WeakMap.prototype.getOrInsert Public

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

    es-shims/WeakMap.prototype.getOrInsert’s past year of commit activity
    JavaScript 0 MIT 0 1 0 Updated Dec 30, 2025
  • SuppressedError Public

    ES Proposal spec-compliant shim for SuppressedError

    es-shims/SuppressedError’s past year of commit activity
    JavaScript 3 MIT 2 1 0 Updated Dec 30, 2025
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JavaScript