Fetching data Asterisk( ARI ) with socket.io & Node.js(ari-client)

Question

I need a help. I have trying fetching data from Asterisk (ARI) and can`t catch events and connect socket. When nodemon started i can get some data(what i want like channels and etc), but if call incoming i cant catch data realtime and i need reload server for grab data(like phone number). Sorry for my broken english.

Main question: why doen`s work event(like ari.on("StasisStart", channel_joined); )?

I know what i necessary more knowledge, but i confused. server.js

const http = require('http');
const app = require('./app');

const PORT = process.env.PORT || 3008;


http.createServer(app)
    .listen(PORT, 'localhost', () => {
        console.log(PORT)
    })

and logic app.js:

const express = require('express');
const util = require('util');
require('dotenv').config();

const app = express();

const client  = require('ari-client');

const config = {
    host: process.env.ARI_HOST,
    user: process.env.ARI_USER,
    pass: process.env.ARI_PASS
}

client.connect(config.host, config.user, config.pass, client_loaded);


function client_loaded (err, ari) {
    if (err) {
          throw err; // program will crash if it fails to connect
      }

 //GRAB phone number
    ari.channels.list((err, channels) => {
            channels.forEach(channel => {
                console.log(channel.caller.number)
            })
        })

  //Events doesn`t work
   ari.on('StasisStart', ()=> console.log('work pls;)'));


   ///.......
    ari.start('hello');
}