node.js echo server

echo-server.js

const net = require('net');
let clients = [];

let server = net.createServer(stream => {
  stream.setEncoding('utf8');
  clients.push(stream);
  let idx = clients.indexOf(stream);
  console.log(`client ${idx} connected.`);
  
  stream.on('data', data => {
    console.log(`client ${idx} sended: ${data}`);
    stream.write(data);
  });
  
  stream.on('end', () => {
    stream.end();
    console.log(`removed client ${idx}`);
    clients[idx] = null;
  });
});

process.on('uncaughtException', exception => {
  console.log(exception);
});

console.log('Server is running on ::8080');
server.listen(8080);