ext
(Previously known as es5-ext)
JavaScript language extensions (with respect to evolving standard)
Non-standard or soon to be standard language utilities in a future proof, non-invasive form.
Doesn't enforce transpilation step. Where it's applicable utilities/extensions are safe to use in all ES3+ implementations.
Installation
npm install ext
Utilities
globalThisFunctionMathObjectPromiseStringString.prototypeThenable.prototype