index.js

const { Client, GatewayIntentBits, Collection } = require("discord.js");
const fs = require("fs");
require("dotenv").config();

const client = new Client({ intents: [GatewayIntentBits.Guilds] });

client.commands = new Collection();

const commandFiles = fs
  .readdirSync("./command")
  .filter((file) => file.endsWith(".js"));
for (const file of commandFiles) {
  const command = require(`./command/${file}`);
  client.commands.set(command.data.name, command);
}

const eventFiles = fs
  .readdirSync("./events")
  .filter((file) => file.endsWith(".js"));
for (const file of eventFiles) {
  const event = require(`./events/${file}`);
  if (event.once) {
    client.once(event.name, (...args) => event.execute(...args));
  } else {
    client.on(event.name, (...args) => event.execute(...args));
  }
}

client.login(process.env.BOT_TOKEN);