index.js

require('dotenv').config();
const { Client, Events, GatewayIntentBits, Collection } = require('discord.js');
const { TOKEN, CLIENT_ID, GUILD_ID} = process.env;

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

// Loading command files
client.commands = new Collection();
const fs = require('fs');
const commandFiles = fs.readdirSync('./commands').filter(file => file.endsWith('.js'));

for (const file of commandFiles) {
	const command = require(`./commands/${file}`);
    
    if ("data" in command && "execute" in command) {
        client.commands.set(command.data.name, command);
    } else {
        console.log(`[WARNING] The command at ${`./commands/${file}`} is missing a required "data" or "execute" property.`);
    } 
}

/* ======================================================== */

// Bot login
client.login(TOKEN);

// Bot is online
client.on('ready', () => {
    console.log(`${client.user.tag} is online.`);
});

// Listen for user interactions with bot
client.on('interactionCreate', async (interaction) => {
    if (!interaction.isChatInputCommand()) return;

    const command = interaction.client.commands.get(interaction.commandName);
	if (!command) return console.error(`No command matching ${interaction.commandName} was found.`);
		
	try {
        await command.execute(interaction);
	} catch (error) {
		console.error(error);
		await interaction.reply({ content: 'There was an error while executing this command!', ephemeral: true });
	}
});