@haydenhigg/atbash
A small library for atbash encryption. Ideal behavior taken from here.
Usage
const atbash = require("@haydenhigg/atbash");
var encrypted = atbash.convert("the message");
var decrypted = atbash.convert(encrypted);
console.log(encrypted); //=> "GSV NVHHZTV"
console.log(decrypted); //=> "THE MESSAGE"