Most popular polyfill repositories and open source projects

Array.prototype.entries

An ES2015 spec-compliant `Array.prototype.entries` shim/polyfill/repla...

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smooth-anchor

easy smooth scrolling for anchor tags.

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mjs-polyfill

Mongoose os example project with standardization polyfill

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bigint-as-any-ts

Polyfill bigint as any that works with TypeScript <3.2

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Javascript_scrollLeftMax_Polyfill

A polyfill for Element.prototype.scrollLeftMax() and Element.prototype...

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frontend-starter-kit

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range-prototype

Extend your JavaScript Number type with a ~100 bytes polyfill

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Array.prototype.some

Array.prototype.some spec-compliant polyfill

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polyfill-sqreen

Killmails polyfill for the Sqreen PHP extension

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Polyfills

Improve your JS workflow while you still provide support for older bro...

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promise-any-polyfill

A polyfill for the `Promise.any` function.

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upsert-map

Addition of a method that will add a value to a map if the map does no...

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beforeScriptExecute-Polyfill

A hookless polyfill for the "beforescriptexecute" event.

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location-polyfill

A Location polyfill for Cloudflare Workers.

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time-now

Time in seconds since the epoch.

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tour-rest-api

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Number.isSafeInteger

An ES-spec-compliant Number.isSafeInteger shim/polyfill/replacement th...

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math-base-special-fast-atanh

Compute the hyperbolic arctangent of a number.

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js-pipeline

(pipeline-operator on npm) Functional implementation of the pipeline o...

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Number.parseFloat

An ES-spec-compliant Number.parseFloat shim/polyfill/replacement that...

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path-composedPath-polyfill.js

(EN) Small polyfill script of Event.path and Event.composedPath() for...

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imageFormatFallback.js

Script to provide fallback image formats for browsers by using a simpl...

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utils-index-of

Return the first index at which a given element can be found.

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Collections

Different types of Associative Collections

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math-base-special-truncf

Round a single-precision floating-point number toward zero.

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polyfill-newrelic

Killmails polyfill for the New Relic PHP extension

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timed-transition

The simple shim for Transition Events with CSS transitions, that trans...

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Array.prototype.forEach

Array.prototype.forEach spec-compliant polyfill

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Event-constructor-polyfill.js

Polyfill Event constructor for Internet Explorer 11

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kphpunit

KPHP polyfill-like package for the PHPUnit.

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math-base-special-acsch

Compute the hyperbolic arccosine of a number.

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Emik.Net20Records

Adds C# 9/10's record/record struct support for .NET Framework 2, 3, a...

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polyfill-io-docker

Self-host your own Polyfill.io Docker image.

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readable-stream-polyfill

"ReadableStream" polyfill based on the eponymous implementation from N...

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promise.any2

Promise.any() implementation

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Array.prototype.slice

ES spec-compliant `Array.prototype.slice` shim/polyfill/replacement th...

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Set.prototype.symmetricDifference

An ESnext spec-compliant `Set.prototype.symmetricDifference` shim/poly...

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Set.prototype.union

An ESnext spec-compliant `Set.prototype.union` shim/polyfill/replaceme...

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Set.prototype.difference

An ESnext spec-compliant `Set.prototype.difference` shim/polyfill/repl...

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Set.prototype.isSupersetOf

An ESnext spec-compliant `Set.prototype.isSupersetOf` shim/polyfill/re...

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Set.prototype.isDisjointFrom

An ESnext spec-compliant `Set.prototype.isDisjointFrom` shim/polyfill/...

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ArrayBuffer.prototype.detached

ES Proposal spec-compliant shim for ArrayBuffer.prototype.detached

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readable-stream

A Simple Yet Spec-Compliant Asynchronous Iteration Polyfill for Readab...

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SuppressedError

ES Proposal spec-compliant shim for SuppressedError

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sturdy-giggle

Typescript React Fitness Application

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hexo-webp-polyfill

WebP image format browser polyfill for Hexo.

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es.shim

实现部分新API, 以及一些常用的扩展方法。 nodejs和浏览器通用,

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WithHook

React hoos for low version React(lower than 16.8), which can be used i...

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array-buffer-byte-length

Get the byte length of an ArrayBuffer, even in engines without a `.byt...

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create-html-document-polyfill

createHTMLDocument polyfill and IE 11 fixer

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