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ECMAScript Shims · GitHub
ECMAScript Shims
A community host for shims and polyfills that are compliant to EcmaScript specs.
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ECMAScript 5 compatibility shims for legacy (and modern) JavaScript engines
JavaScript
7.1k
892
ECMAScript spec-compliant polyfill/shim for `globalThis`.
JavaScript
156
13
ES Proposal spec-compliant shim for Promise.prototype.finally
JavaScript
138
9
ES Proposal spec-compliant shim for Promise.allSettled
JavaScript
97
10
API contract, and rudimentary tests, for modules that conform to the *es-shim API*
JavaScript
81
4
Repositories
Showing 10 of 166 repositories
iterator-helpers
Public
An ESnext spec-compliant iterator helpers shim/polyfill/replacement that works as far down as ES3.
es-shims/iterator-helpers’s past year of commit activity
JavaScript
18
MIT
2
1
0
Updated Dec 13, 2025
es-shims/es-abstract’s past year of commit activity
JavaScript
6
MIT
38
0
1
Updated Dec 13, 2025
es-shims/Symbol.prototype.description’s past year of commit activity
JavaScript
6
MIT
1
1
0
Updated Dec 11, 2025
es-shims/Object.getOwnPropertyDescriptors’s past year of commit activity
JavaScript
20
MIT
8
2
0
Updated Dec 10, 2025
es-shims/RegExp.prototype.flags’s past year of commit activity
JavaScript
8
MIT
10
1
1
Updated Dec 10, 2025
es-shim-api
Public
API contract, and rudimentary tests, for modules that conform to the *es-shim API*
es-shims/es-shim-api’s past year of commit activity
JavaScript
81
MIT
4
1
0
Updated Oct 29, 2025
AggregateError
Public
ES Proposal spec-compliant shim for AggregateError
es-shims/AggregateError’s past year of commit activity
JavaScript
14
MIT
2
1
0
Updated Oct 24, 2025
Error.isError
Public
An ESnext spec-compliant `Error.isError` shim/polyfill/replacement that works as far down as ES3.
es-shims/Error.isError’s past year of commit activity
JavaScript
2
MIT
2
2
1
Updated Oct 24, 2025
array-includes
Public
Array.prototype.includes spec-compliant polyfill
es-shims/array-includes’s past year of commit activity
JavaScript
43
MIT
12
1
0
Updated Oct 23, 2025
es-shims/ArrayBuffer.prototype.transfer’s past year of commit activity
JavaScript
1
MIT
2
1
0
Updated Oct 23, 2025
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