deploy-commands.js

const { REST, Routes } = require("discord.js")
const { clientId, guildId, token } = require("./config.json")
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"))
    // Grab the SlashCommandBuilder#toJSON() output of each command's data for deployment
    for (const file of commandFiles) {
        const filePath = path.join(commandsPath, file)
        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(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.applicationCommands(clientId), {
            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)
    }
})()