Discord.js-example.js

const { Client, Intents } = require('discord.js')

const client = new Client({
	intents: [
		Intents.FLAGS.GUILDS,
		Intents.FLAGS.GUILD_MESSAGES,
		Intents.FLAGS.DIRECT_MESSAGES,
	],
	partials: ['CHANNEL', 'MESSAGE'],
})

client.on('ready', () => {
	console.log(`Logged in as ${client.user.tag}!`)
})

client.on('messageCreate', (message) => {
	if (message.guild === null) {
		console.log('This is a DM') // if is DM
	}
	if (message.content.startsWith('ping')) {
		message.author.send('Pong')
	}
})


client.login('token')