An ESnext spec-compliant Math.atanh 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 @bobyzgirlllnpm/accusamus-quis-qui

console.log(Math.atanh(-1)); // -Infinity
console.log(Math.atanh(0)); // 0
console.log(Math.atanh(0.5)); // 0.5493061443340548
console.log(Math.atanh(2)); // NaN

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