bad session event behavior

gistfile1.js

var zk = require('../lib');
var async = require('async');
if (require.cache[__dirname + '/helper.js'])
        delete require.cache[__dirname + '/helper.js'];
var helper = require('./helper.js');

var ZK;

var HOST = process.env.ZK_HOST || 'localhost';
var PORT = parseInt(process.env.ZK_PORT, 10) || 2181;

ZK = zk.createClient({
        log: helper.createLogger('zk.client.test.js'),
        servers: [ {
                host: HOST,
                port: PORT
        }]
});

var watchcount = 0;
var childrencount = 0;
ZK.watch('/', {method: 'list', initialData: true}, function(err, listener) {
        watchcount++;
        if (err !== null) {
          return console.log(err);
        }

        listener.on('error', function (err) {
                console.error(err.stack);
                process.exit(1);
        });

        listener.on('children', function (children) {
                childrencount++;
                console.log(childrencount + ' children events');
                console.log(watchcount + ' watch function calls');
        });
});