index.js

const Discord = require('discord.js')
const fs = require('fs')

const { 
    token,
    prefix
 } = require('./index-settings.json')

const app = new Discord.Client()

app.commands = new Discord.Collection();
app.aliases = new Discord.Collection();

app.on('ready', () => 
{
    console.log(`| ${app.user.tag} is online !!!`)

    setInterval(function()
    {
        app.user.setActivity('Discord JS app 1', { type: "WATCHING" })
        app.user.setActivity('Discord JS app 2', { type: "WATCHING" })
        app.user.setActivity('Discord JS app 3', { type: "WATCHING" })
    }, 4000)
})

fs.readdir("./commands/", (err, files) => 
{
    if(err) console.log(err);
    let jsfile = files.filter(f => f.split(".").pop() === "js");
    if(jsfile.length <= 0)
    {
      console.log("Couldn't find commands.");
      return;
    }
    
    jsfile.forEach((f, i) =>
    {
      let props = require(`./commands/${f}`);
        
      console.log(`| --------Commands-------- `);
      console.log(`| ✅ ${f} loaded! `);
        
      app.commands.set(props.help.name, props);
        
      props.help.aliases.forEach(alias =>
      { 
        app.aliases.set(alias, props.help.name);
      });
    });
  })

app.on("message", async message => 
{
    let messageArray = message.content.split(" ");
    let args = message.content.slice(prefix.length).trim().split(/ +/g);
    let cmd = args.shift().toLowerCase();
    let commandfile;
  
    if (app.commands.has(cmd))
    {
        commandfile = app.commands.get(cmd);
    }
    else if (app.aliases.has(cmd)) 
    {
        commandfile = app.commands.get(app.aliases.get(cmd));
    }
  
    if (!message.content.startsWith(prefix)) return;
  
          
  try 
  {
    commandfile.run(app, message, args);
  } 
  catch (e) 
  {
    console.log(e)
  }
})

app.login(token)