BoneScript but I am not sure just yet what it is...

var b = require('bonescript');
var options = {
    baudrate: 9600,
    parser: b.serialParsers.readline("\n")
};

b.serialOpen(port, options, onSerial);

function onserail(x) {
    console.log(x.event);
    if (x.err) {
        console.log('---ERROR--- ' +
JSON.stringify(x));
    }
    if (x.event == 'open') {
        console.log('---OPENED---');
        setInterval(sendCommand, 1000);
    }
    if (x.event == 'data') {
        console.log(String(x.data));
    }
}

var command = ['r', 'g'];
var commIdx = 1;

function sendCommand() {
    b.serialWrite(port, command[commIdx++]);
    if(commIdx >= command.length) {
        commIdx = 0;
    }
}