deploy-commands.js

const { REST, Routes } = require('discord.js');
require('dotenv').config();
const fs = require('node:fs');
const path = require('node:path');

const commands = [];
// Grab all the command files from the commands directory you created earlier
const commandsPath = path.join(__dirname, 'commands');  //path of the commands file
const commandFiles = fs.readdirSync(commandsPath).filter(file => file.endsWith('.js'));  // this will be an array of names of the files in commands folder

// Grab the SlashCommandBuilder#toJSON() output of each command's data for deployment
for (const file of commandFiles) {
	const command = require(`./commands/${file}`);
	commands.push(command.data.toJSON());
}

// Construct and prepare an instance of the REST module
const rest = new REST({ version: '10' }).setToken(process.env.token);

// and deploy the commands!
(async () => {
	try {
		console.log(`Started refreshing ${commands.length} application (/) commands.`);

		// The put method is used to fully refresh all commands in the guild with the current set
		const data = await rest.put(
			Routes.applicationGuildCommands(process.env.clientId, process.env.guildId),
			{ body: commands },
		);

		console.log(`Successfully reloaded ${data.length} application (/) commands.`);
	} catch (error) {
		//  catch and log any errors!
		console.error(error);
	}
})();