discordID-to-hex.js

/**
 * toHex(inputNumber)
 *
 * @param {number} inputNumber
 * @return {string} hash
 *
 * @example
 *
 *     toHex(394540642987933707 + Date.now())
 *
*/

 const toHex = (inputNumber) => {
  let hash = '',
    alphabet = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
    alphabetLength = alphabet.length;

  do {
   hash = alphabet[inputNumber % alphabetLength] + hash;
   inputNumber = parseInt(inputNumber / alphabetLength, 10);
  } while (inputNumber); 
  return hash
 };
 
 let userId = parseInt(message.author.id);

  message.channel.send(`**userName:** ${message.author.username}
    \n**userId:** ${message.author.id}
    \n**userHex:** ${toHex(userId + Date.now())}`)