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JavaScript Polyfill Libraries

Libraries that provide polyfills, shims, or ponyfills to enable modern ECMAScript features in environments that do not fully support them.

21 projects

32,840 contributors

$73M

Angular

Angular is a TypeScript-based web application framework developed by Google for building dynamic, single-page applications with a structured, component-driven architecture.

Contributors

22,129

Organizations

3,498

Software value

$38M

Babel

Babel is a compiler for writing next-generation JavaScript.

Contributors

7,107

Organizations

2,493

Software value

$28M

core-js

core-js is a modular standard library for JavaScript that includes polyfills for ECMAScript features, implementations of proposals for future ECMAScript versions, and cross-platform compatibility tools. It enables using modern JavaScript features while maintaining support for older environments.

Contributors

2,274

Organizations

772

Software value

$3.8M

Web Components Polyfills

Web Components Polyfills

Contributors

471

Organizations

142

Software value

$1.7M

ES6-Promise

A polyfill for ES6-style Promises

Contributors

446

Organizations

174

Software value

$65K

es5-ext

ECMAScript extensions (with respect to upcoming ECMAScript features)

Contributors

275

Organizations

84

Software value

$501K

WhatWG Node

Helper packages to create platform agnostic applications and libraries without worrying about the lack of WHATWG support in Node.js

Contributors

104

Organizations

50

Software value

$607K

Object.assign

ES6 spec-compliant Object.assign shim. From https://github.com/es-shims/es6-shim

Contributors

34

Organizations

23

Software value

$27K

AMP HTML

The AMP web component framework.

This project hasn't been onboarded to LFX Insights.

ECMAScript Abstract Operations

ECMAScript spec abstract operations.

This project hasn't been onboarded to LFX Insights.

ESM

Tomorrow's ECMAScript modules today!

This project hasn't been onboarded to LFX Insights.

Locutus

Bringing stdlibs of other programming languages to JavaScript for educational purposes

This project hasn't been onboarded to LFX Insights.

Modernizr

Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.

This project hasn't been onboarded to LFX Insights.

Scroll-Into-View Ponyfill

Element.scrollIntoView ponyfills for things like "if-needed" and "smooth"

This project hasn't been onboarded to LFX Insights.

SystemJS

Dynamic ES module loader

This project hasn't been onboarded to LFX Insights.

isarray

Array#isArray for older browsers.

This project hasn't been onboarded to LFX Insights.

object-assign

ES2015 Object.assign() ponyfill

This project hasn't been onboarded to LFX Insights.

regexpu-core

regexpu’s core functionality, i.e. `rewritePattern(pattern, flag, options)`, which enables rewriting regular expressions that make use of the ES6 `u` flag into equivalent ES5-compatible regular expression patterns.

This project hasn't been onboarded to LFX Insights.

webextension-polyfill

A lightweight polyfill library for Promise-based WebExtension APIs in Chrome

This project hasn't been onboarded to LFX Insights.
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