Discord.js V12 slash commands manager

readme.md

Notes

This will only work if a guild grants your bot the applications.commands scope

Notice:

The previous developer (coolmlgplayer-js) has asked me to continue to maintain this gist, as she has quit development.

bot.js

//This example will create a global slash command called 'ping'

const { Client } = require('discord.js');
const bot = new Client();
const SlashCommandManager = require('./SlashCommandManager');

bot.SlashCommandManager = new SlashCommandManager(bot);

bot.once('ready', async () => {
    const commandExists = await bot.SlashCommandManager.globalCommandExists('ping');
    if (!commandExists) bot.SlashCommandManager.createGlobalCommand({
        name: 'ping',
        description: 'pong'
    }).catch(console.error);
});

bot.ws.on('INTERACTION_CREATE', async interaction => {
    switch (interaction.data.name) {
        case "ping":
            bot.SlashCommandManager.respond(interaction, {
                type: 3,
                data: {
                    content: 'Pong!',
                    flags: 1 << 6
                }
            });
            break;

        default:
            bot.SlashCommandManager.respond(interaction, {
                type: 3,
                data: {
                    content: `No handler found for \`/${interaction.data.name}\``,
                    flags: 1 << 6
                }
            });
            break;
    };
});

bot.login('TOKEN');

SlashCommandManager.js

module.exports = class SlashCommandManager {

    constructor(client) {
        this.client = client;
    };

    async createGlobalCommand(data = {}) {
        return this.client.api.applications(this.client.user.id).commands.post({
            data: data
        });
    }

    async createGuildCommand(guild, data = {}) {
        if (!guild || !guild.id) throw new TypeError('No guild provided!');
        if (!this.client.guilds.cache.has(guild.id)) throw new TypeError('Invalid guild provided!');
        return this.client.api.applications(this.client.user.id).guilds(guild.id).commands.post({
            data: data
        });
    }

    async globalCommandExists(command_id) {
        const commands = await this.client.api.applications(this.client.user.id).commands.get();
        return commands.some(c => c.id === command_id || c.name === command_id);
    }

    async guildCommandExists(guild, command_id) {
        if (!guild || !guild.id) throw new TypeError('No guild provided!');
        if (!this.client.guilds.cache.has(guild.id)) throw new TypeError('Invalid guild provided!');
        const commands = await this.client.api.applications(this.client.user.id).guilds(guild.id).commands.get();
        return commands.some(c => c.id === command_id || c.name === command_id);
    }

    async deleteGlobalCommand(command_id) {
        const commands = await this.client.api.applications(this.client.user.id).commands.get();
        const command = commands.find(c => c.id === command_id || c.name === command_id);
        if (command) command_id = command.id
        else throw new TypeError('Invalid Command');
        return this.client.api.applications(this.client.user.id).commands(command_id).delete();
    }

    async deleteGuildCommand(guild, command_id) {
        if (!guild || !guild.id) throw new TypeError('No guild provided!');
        if (!this.client.guilds.cache.has(guild.id)) throw new TypeError('Invalid guild provided!');
        const commands = await this.client.api.applications(this.client.user.id).guilds(guild.id).commands.get();
        const command = commands.find(c => c.id === command_id || c.name === command_id);
        if (command) command_id = command.id
        else throw new TypeError('Invalid Command');
        return this.client.api.applications(this.client.user.id).guilds(guild.id).commands(command_id).delete();
    }

    async respond(interaction, data = {}) {
        return this.client.api
            .interactions(interaction.id, interaction.token)
            .callback.post({
                data: data
            });
    }

};

how to use in cmd handler plz help me