polyfill

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

Web standard polyfill for Declarative Shadow DOM

ES2019 spec-compliant String.prototype.trimStart shim

Set of polyfills for ord .NET Framework.

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

Libraries for enabling the use of modern CSS features in legacy browsers.

A NPM library to support import maps through @guybedford's `ESM` shim and @khrome's `<iframe> as Worker` shim

Pure lua libraries for emulating luau libraries used for transpiling in dalbit

A generator cli for React

A lightweight, framework-agnostic component that shows a native-like install hint for iOS Safari to help users add your Progressive Web App (PWA) to t...

Polyfill for plain SVG as Data URI scheme.

A polyfill for hrtime.

Barcode detector polyfill using zbar.wasm

A ponyfill for fs.readdir(path, { withFileTypes: true })

A polyfill for highlight.js to isolate various syntax themes because of global style pollution.

new Event() polyfill

Includes a polyfill for closest if needed

Polyfill for es8 String.prototype.padStart

Bare minimum react app polyfill in 9.6 KB

ie polyfills (有 bug，待修复，推荐使用 es5-shim, es6-shim, es7-shim)

An ESnext spec-compliant shim/polyfill/replacement for all Well-Known Symbols that works in any environment with Symbols

WebP image format browser polyfill for Hexo.

PostCSS `color-contrast()` polyfill

Array.prototype.reduce spec-compliant polyfill

SilverWare Datepicker Module

Polyfill for RFC 580: Destroyables

Simple ES6 Array.prototype.filter polyfill for older environments.

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

ES2015 Map like object. Tiny `Map` shim.

Map with superpowers!

Array.prototype.map spec-compliant polyfill

A polyfill to make Cross Browser Support much easier!

web-locks API polyfill

List of polyfills to use modern things safely

A HTML5 spec-compliant <dialog> polyfill

Object with superpowers!

Polyfill for ES8 Object.entries

Detect if a feature can skip polyfills for ESM builds.

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

A drop in replacement for the path NodeJS module

A Polymer 3 compatible solution to reacting to changes in an element's size and/or position

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

ES spec-compliant `Object.defineProperties` shim/polyfill/replacement that works as far down as ES3

An ES2015 spec-compliant `Array.prototype.copyWithin` shim/polyfill/replacement that works as far down as ES3.

An ES2015 spec-compliant `Map` shim/polyfill/replacement that works as far down as ES3.

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

Simple performance now polyfill for old browsers and node

(EN) Small polyfill script of Event.path and Event.composedPath() for internet explorer 9 or higher

Titanium native mobile polyfills necessary to use packages that depend on Node.js modules

Brings drag-drop-polyfill into your Ember applications.