const ALPHABET = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
function randomChar() {
  return ALPHABET.charAt(Math.floor(Math.random()*62))
}

function createHash(len) {
  var str = '';
  while(str.length < len) str += randomChar();
  return str;
}

module.exports = createHash;