Ponyfill Packages

ES2015 Math.cosh() ponyfill

Fill function for arrays or strings based on array.fill

Array#reduceRight ponyfill for older browsers

ES2015 Math.asinh() ponyfill

Node.js `childProcess.ChildProcess` ponyfill

javascript polyfill for compression streams specification

ES2015 Math.cbrt() ponyfill

ES2015 Math.clz32() ponyfill

A versatile Element.classList alternative for manipulating CSS class names, triggering change events using HTML data attributes, and creating class-related event listeners using a simple, declarative API.

path.parse() from Node.js without unnecessary semver bumps

Gracefully terminate a script in Node.js or browsers.

Standard library

Node.js `buffer.includes()` ponyfill

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

Ponyfill for Promise.allSettled

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

A fetch ponyfill for Google Apps Script.

ES2015 Object.assign() ponyfill

Ponyfill for Event.getComposedPath()

A ponyfill/polyfill for VideoPlaybackQuality.