clear-commands.js

const { REST, Routes } = require('discord.js');

// Construct and prepare an instance of the REST module
const rest = new REST().setToken(process.env.TOKEN);

// and deploy your commands!
(async () => {
    try {
        console.log(`Started clearing global application (/) commands.`);

        rest.put(Routes.applicationCommands(process.env.CLIENT_ID), { body: [] })
        .then(() => console.log('Successfully deleted all application commands.'))
        .catch(console.error);

        console.log(`Successfully cleared global application (/) commands.`);

        console.log(`Started clearing guild application (/) commands.`);

        rest.put(Routes.applicationGuildCommands(process.env.CLIENT_ID, process.env.GUILD_ID), { body: [] })
        .then(() => console.log('Successfully deleted all guild commands.'))
        .catch(console.error);

        console.log(`Successfully cleared guild application (/) commands.`);
    } catch (error) {
        // And of course, make sure you catch and log any errors!
        console.error(error);
    }
})();