var ArabicReshaper = require('arabic-reshaper');

var originalString = String.fromCharCode(0x0636, 0x0636);

console.log(originalString);

var newString = ArabicReshaper.convertArabic(originalString)

console.log(newString); // should look the same

console.log(newString.codePointAt(0).toString(16), newString.codePointAt(1).toString(16))