Top 169 polyfill open source projects

Shim to insulate apps from spec changes and prefix differences. Latest adapter.js release:

👇💥 JavaScript library for handling Force Touch, 3D Touch, and Pointer Pressure.

Use the WebXR Device API today, providing fallbacks to native WebVR 1.1 and Cardboard

📷 A poly-fill for the FLIF image format.

Lint the browser compatibility of your code

This project was started in the cause of solving issue facebook/react-native#854, React Native's lacks of Blob implementation which results into problems when transferring binary data.

Display paginated content in the browser and generate print books using web technology

Standard Library

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Tiny library (<200B gzip) for deferring something by a "tick"

XMLHttpRequest.js - Standard-compliant cross-browser XMLHttpRequest object implementation

A polyfill for the sharing that can be used in desktop too, so your users can shere in their twitter, facebook, messenger, linkedin, sms, e-mail, print, telegram or whatsapp.

🚀 A Jekyll plugin to provide powerful supports for table, mathjax, plantuml, mermaid, emoji, video, audio, youtube, vimeo, dailymotion, soundcloud, spotify, etc.

Minimal and dependency-free vanilla JavaScript polyfill for the awesome datalist-functionality

Polyfill for CSS `position: sticky`

This component provides a collection of functions/classes using the symfony/intl package when the Intl extension is not installed.

React component for anchor links using the smooth scroll polyfill.

🎚 HTML5 input range slider element polyfill

jQuery contextMenu plugin & polyfill

Polyfill for the HTML dialog element

🗻 Polyfill object-fit/object-position on <img>: IE9, IE10, IE11, Edge, Safari, ...

browser polyfill for the webp image format

📱 Make videos playable inline on the iPhone (prevents automatic fullscreen)

This component provides functions unavailable in releases prior to PHP 7.3.

Variable font inspector

Polyfill for Navigator.sendBeacon()

MediaStream ImageCapture polyfill. Take photos from the browser as easy as .takePhoto().then(processPhoto)

Allows you to code using certain React.next features today! Perfect for component library maintainers.

History.js gracefully supports the HTML5 History/State APIs (pushState, replaceState, onPopState) in all browsers. Including continued support for data, titles, replaceState. Supports jQuery, MooTools and Prototype. For HTML5 browsers this means that you can modify the URL directly, without needing to use hashes anymore. For HTML4 browsers it wi…

A polyfill for the kv-storage built-in module.

A polyfill for document.scrollingElement as defined in the CSSOM specification.

Runtime polyfills for TypeScript libs, powered by core-js! 🔋 🔩

Disable 300ms delay on mobile using CSS touch-action or asynchronously download FastClick as polyfill

EQCSS is a CSS Reprocessor that introduces Element Queries, Scoped CSS, a Parent selector, and responsive JavaScript to all browsers IE8 and up

DEPRECATED: A position: sticky polyfill that works with filamentgroup/fixed-fixed for a safer position:fixed fallback.

Backporting .NET and more: LINQ expressions in .net 2.0 - nuget Theraot.Core available.

Browser and JS shims used by Airbnb.

This component provides functions unavailable in releases prior to PHP 5.6.

A polyfill for the Resize Observer API

A source code only package which allows you to use .NET's nullable attributes in older target frameworks like .NET Standard 2.0 or the "old" .NET Framework.

This component provides functions unavailable in releases prior to PHP 5.5.

This component provides binary-safe string functions, using the mbstring extension when available.

Polyfill for the React Suspense API 😮

ES6 Promise polyfill

webcrypto-liner is a polyfill that let's down-level User Agents (like IE/Edge) use libraries that depend on WebCrypto. (Keywords: Javascript, WebCrypto, Shim, Polyfill)

Polyfill implements newer Ruby features into older versions.

Use WebVR today, without requiring a special browser build.

PHP polyfills

ECMAScript proposal for Deduplicating method of Array

Universal polyfill for match media API using Expo APIs on mobile

Surgically polyfills timezone support in Intl.DateTimeFormat API

This component provides functions unavailable in releases prior to PHP 5.4.

Webpack plugin to automatically inject polyfills into your bundle without affecting modern browsers.

A polyfill for the 'scroll-behavior' CSS-property

Client-side support for CSS custom properties (aka "CSS variables") in legacy and modern browsers

Windows 10 Web Bluetooth Polyfill

A stand-alone working lightweight version of the W3C Custom Elements specification

AXA CH UI components library. Please share, comment, create issues and work with us!

PHP 5.x support for random_bytes() and random_int()

Internet Explorer 11 compatibility solution for Bootstrap 5