Ponyfill Packages

Node.js ponyfill for HTTP/2 support (uses native http2 module or falls back to spdy if Node version is < v10.10.0; when http2 is marked as no longer experimental)

The missing logging function for modern Javascript, v => ( console.log( v ), v )

A polyfill for the Resize Observer API

ES6 String.includes() ponyfill

ES2015 Math.acosh() ponyfill

A polyfill for Request.prototype.formData on cloudflare workers

Use the Node core buffer module in Node, browsers and react-native.

Standard library

Ponyfill's for some native ES2017+ built-in methods

A speculative polyfill to use the lt element in HTML

A simple shim to ensure that using console in IE doesnt explode when dev tools are not open

Bluetooth cross-platform.

Ponyfill for Event.getComposedPath()

Ponyfill for Promise.allSettled

A lightweight implementation of Promise in pure ES5 code for older JS engines

ES2015 Object.assign() ponyfill

A fetch ponyfill for Google Apps Script.

A ponyfill (doesn't overwrite the native fetch) for the Fetch specification https://fetch.spec.whatwg.org.

A speculative polyfill to use the h element in HTML

ES2015 Math.hypot() ponyfill