polyfill

A window.fetch JavaScript polyfill.

Standard Library

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 will revert back to using the old onhashchange functionality.

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

This component provides a partial, native PHP implementation for the Mbstring extension.

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

Automatic polyfill service.

🐕 Bare minimum 500b fetch polyfill.

A Javascript library for working with native objects.

Promise packages, patterns, chat, and tutorials

This component provides a partial, native PHP implementation for the Ctype extension.

This component provides features unavailable in releases prior to PHP 7.0.

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.

Check the browser compatibility of your code

A project committed to making file access and data transfer easier, efficient for React Native developers.

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

Polyfill for the HTML dialog element

Polyfill for CSS `position: sticky`

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

jQuery contextMenu plugin & polyfill

🎚 HTML5 input range slider element polyfill

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

PHP polyfills

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

A polyfill for the Resize Observer API

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.

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

This component provides a fallback implementation for the Normalizer class provided by the Intl extension.