ArduinoNodeExpressSocket

import and run:

npm install

start the server:

npm start

upload test code to your Arduino:

void setup() {
  Serial.begin(9600);
}

void loop() {
  Serial.println("text from");
  delay(2000);
  Serial.println("your Arduino");
  delay(2000);
}

browse to http://localhost:3001 to see live data from the Arduino