Disflow

const { Client, GatewayIntentBits, REST, Routes } = require('discord.js');
// Create client
const client = new Client({
  intents: [
    GatewayIntentBits.Guilds,
    GatewayIntentBits.GuildMessages
  ]
});
// Define commands
const commands = [
  {
    name: 'ping',
    description: 'Pong!'
  }
];
// Register commands
const rest = new REST().setToken(process.env.TOKEN);
(async () => {
  try {
    await rest.put(
      Routes.applicationCommands(CLIENT_ID),
      { body: commands }
    );
  } catch (error) {
    console.error(error);
  }
})();
// Handle interactions
client.on('interactionCreate', async interaction => {
  if (!interaction.isChatInputCommand()) return;
  
  if (interaction.commandName === 'ping') {
    await interaction.reply('Pong!');
  }
});
// Ready event
client.on('ready', () => {
  console.log(`Logged in as ${client.user.tag}`);
});
// Login
client.login(process.env.TOKEN);
// + Error handling
// + Command validation
// + Permission checks
// + ...