EspruinoWifi connected / disconnected event

Hi There
I just received a few espruino.wifi boards. Nice work!

I try to detect the connected or disconnected event without success. I did not get any of this two events. No connected event on connect and no disconnect event when i switch off my wifi AP.

Code:

var wifi = require("EspruinoWiFi");
var WIFI_NAME = "XYZ";
var WIFI_OPTIONS = { password : "PW" };

console.log('Starting...');

wifi.on('connected', function(data) {
    console.log("> connected "+data);
});
wifi.on('disconnected', function(data) {
    console.log("> disconnected "+data);
});

wifi.connect(WIFI_NAME, WIFI_OPTIONS, function(err) {
    if (err) {
        console.log("Connection error: "+err);

        return;
    }
    wifi.getIP(function(f,ip) {
        console.log("Connected: ", ip);
    });
});

The console output is:

_____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v94 Copyright 2016 G.Williams
>Starting...
=undefined
Connected:  {
  "ip": "192.168.68.175",
  "mac": "5c:cf:7f:c0:14:c8"
 }
>