https://github.com/websockets/ws

    1. yarn add ws
    4. import WebSocket from 'ws';
    6. const ws = new WebSocket('ws://www.host.com/path');
    8. ws.on('open', function open() {
    9.   ws.send('something');
    10. });
    12. ws.on('message', function incoming(message) {
    13.   console.log('received: %s', message);
    14. });