How to use the osc.SerialPort function in osc

var osc = require("osc");

/*******************
 * OSC Over Serial *
 *******************/

// Instantiate a new OSC Serial Port.
var serialPort = new osc.SerialPort({
    devicePath: process.argv[2] || "/dev/tty.usbmodem221361"
});

serialPort.on("message", function (oscMessage) {
    console.log(oscMessage);
});

// Open the port.
serialPort.open();


/****************
 * OSC Over UDP *
 ****************/

var getIPAddresses = function () {