xiao/commands/response/cat.js

const commando = require('discord.js-commando');

module.exports = class RandomCat extends commando.Command {
    constructor(Client) {
        super(Client, {
            name: 'cat',
            group: 'response',
            memberName: 'cat',
            description: 'Sends a random cat picture. (;cat)',
            examples: [';cat']
        });
    }

    run(message) {
        if (message.channel.type !== 'dm') {
            if (!message.channel.permissionsFor(this.client.user).hasPermission(['SEND_MESSAGES', 'READ_MESSAGES', 'ATTACH_FILES'])) return;
        }
        console.log(`[Command] ${message.content}`);
        let cat = ["1.jpg", "2.jpg", "3.jpg", "4.jpg", "5.jpg", "6.jpg", "7.jpg", "8.jpg", "9.jpg", "10.jpg", "11.jpeg", "12.jpg", "13.jpeg", "14.png", "15.jpg", "16.jpg", "17.jpg", "18.jpg", "19.jpg", "20.jpg"];
        cat = cat[Math.floor(Math.random() * cat.length)];
        return message.channel.sendFile(`./images/Cat${cat}`);
    }
};