serial_port_nodejs_call_example.js

var SerialPort = require("serialport").SerialPort
var serialPort = new SerialPort("/dev/cu.usbmodem1411", {
  baudrate: 57600
}, false); // this is the openImmediately flag [default is true]

serialPort.open(function (error) {
// more code here//
      var regex = /\d+/g;
      var port = str.match(regex);
      console.log(port);
      if(port !== null){
      console.log('data received: ' + data);
      console.log(str);
      if (str.indexOf("was just touched") > -1){
        console.log(port[0]);
        io.sockets.emit("hit", {'sound': port[0]})
        console.log("TOUCH");
      }else if (str.indexOf("no longer being") > -1){

        console.log("NOPE");
      }
   //more code here //
});

//general list of ports for debugging//
var serialPorts = require("serialport");
serialPorts.list(function (err, ports) {
  ports.forEach(function(port) {
    console.log(port.comName);
    console.log(port.pnpId);
    console.log(port.manufacturer);
  });
});

module.exports = app;
console.log("Listening on port " + port);