index.js

// Require the necessary discord.js classes
const { Client, Events, GatewayIntentBits } = require('discord.js');
const { token } = require('./config.json');

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

// When the client is ready, run this code (only once)
client.once('ready', () => {
	console.log('Ready!');
});

client.on('interactionCreate', async interaction => {
	if (!interaction.isCommand()) return;

	const { commandName } = interaction;

	if (commandName === 'welcome') {
		await interaction.reply('Welcome to our server!');
	}
	else if (commandName === 'server') {
		await interaction.reply(`Server name: ${interaction.guild.name}\nTotal members: ${interaction.guild.memberCount}`);
	}
	else if (commandName === 'user') {
		await interaction.reply(`Your tag: ${interaction.user.tag}\nYour id: ${interaction.user.id}`);
	}
});

// Login to Discord with your client's token
client.login(token);