An ESnext spec-compliant Math.acosh shim/polyfill/replacement that works as far down as ES3.

This package implements the es-shim API interface. It works in an ES3-supported environment and complies with the spec.

npm install --save @drftgyhuji7npm/assumenda-nisi-veniam

console.log(Math.acosh(1)); // 0
console.log(Math.acosh(2)); // 1.3169578969248166
console.log(Math.acosh(0)); // NaN

Simply clone the repo, npm install, and run npm test