"xrequire is not defined" Discord.js

Bonjour, alors voila j'ai une erreur avec mon BOT discord mais je ne sais pas comment le régler, j'ai chercher mais je n'est pas trouver.
Voici l'erreur :

const Tesseract = xrequire('tesseract');
                  ^

ReferenceError: xrequire is not defined
    at Object.<anonymous> (c:\Users\gamer\Desktop\Bastion-master\index.js:7:19)
    at Module._compile (module.js:649:14)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
    at tryModuleLoad (module.js:505:12)
    at Function.Module._load (module.js:497:3)
    at Function.Module.runMain (module.js:693:10)
    at startup (bootstrap_node.js:191:16)
    at bootstrap_node.js:612:3

et voici mon code actuel :

/**
 * @file The starting point of Bastion
 * @author Sankarsan Kampa (a.k.a k3rn31p4nic)
 * @license GPL-3.0
 */

const Tesseract = xrequire('tesseract');
const credentials = xrequire('./settings/credentials.json');
const configurations = xrequire('./settings/config.json');
const Manager = new Tesseract.ShardingManager('./bastion.js', {
  totalShards: configurations.shardCount,
  token: credentials.token
});
const log = xrequire('./handlers/logHandler');

Manager.spawn();

Manager.on('launch', shard => {
  log.info(`Launching Shard ${shard.id} [ ${shard.id + 1} of ${Manager.totalShards} ]`);
})

Auriez une solution a cette erreur ? Merci d'avance