deploy-commands.js

const { REST, Routes } = require('discord.js')
require('dotenv').config() // Load environment variables from a .env file
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 foldersPath = path.join(__dirname, 'commands')
const commandFolders = fs.readdirSync(foldersPath)

for (const folder of commandFolders) {
  // Grab all the command files from the commands directory you created earlier
  const commandsPath = path.join(foldersPath, folder)
  const commandFiles = fs.readdirSync(commandsPath).filter(file => file.endsWith('.js'))
  console.log(commandFiles)
  // Grab the SlashCommandBuilder#toJSON() output of each command's data for deployment
  for (const file of commandFiles) {
    const filePath = path.join(commandsPath, file)
    // console.log(filePath)
    const command = require(filePath)
    if ('data' in command && 'execute' in command) {
      commands.push(command.data.toJSON())
    } else {
      console.log(`[WARNING] The command at ${filePath} is missing a required "data" or "execute" property.`)
    }
  }
}
// Construct and prepare an instance of the REST module
const rest = new REST().setToken(process.env.BOT_TOKEN);

// and deploy your 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.CLIENT_ID, process.env.GUILD_ID),
      { body: commands }
    )
    console.log(`Successfully reloaded ${data.length} application (/) commands.`)
  } catch (error) {
    // And of course, make sure you catch and log any errors!
    console.error(error)
  }
})()