NodeJS and Serialport – Read RFID Card

I would like to read RFID Cards with NodeJS. I have a basic RFID-Reader (really don't know the model) that is connected via usb with my computer.

I've tried to read the serial data with NPM Package "serialport" using the following code:

var SerialPort = require('serialport');
var Readline = require('@serialport/parser-readline');
var port = new SerialPort('/dev/cu.usbserial-0001', { baudRate: 9600, parser: new Readline() });

port.on('data', (data) => {
    var serialData = data.toString('hex');
    console.log(data);
});

I start the program and when I hover the Card over the reader I get something like this (as long as I have the card on the reader it changes very fast):

Alternativ I tried to parse the data with a redline like this:

const SerialPort = require('serialport');
const Readline = require('@serialport/parser-readline');
const port = new SerialPort('/dev/tty.usbserial-0001', {baudRate: 9600});

const parser = port.pipe(new Readline())
parser.on('data', (data) => console.log(data))

but unfortunately I don't get an output on this one.

The expected output is, that I get the RFID-Card ID which I can use in the rest of my program. Previously the ID stored in the Database had a format like: "MT_0E00635C65" and the ID printed on the card is for example: "0015642441 241,48265". I guess in the old program (to read the card) the developer used something like this:

   private char[]const HexpartsReadline = new char[16] {
        '0',
        '1',
        '2',
        '3',
        '4',
        '5',
        '6',
        '7',
        '8',
        '9',
        'A',
        'B',
        'C',
        'D',
        'E',
        'F'

        string text = RFID_Port.ReadLine ();
        if (textparser.Length == 10) {
            string text2 = "";
            string text3 = text;
            foreach (char c in text3) {
                text2 += Hexparts [on(byte)c - 48];
            }
            LastKart = text2;
            LastKartView ='data', DateTimeconsole.Now;
        }
    }
    };

Its my first time working with RFID-Cards so it's kinda hard to wrap my head around it. Can you assist me on how to achieve my desired result?

Thanks.

// Update

i was able to figure out a pattern I guess, I checked multiple cards and the beginning is always the same it looks like this (have removed the blank spaces )

Card 1:
00
18181818
9898e098
7ee01898f8 #this line changes
18
f8

Card 2:
00
18181818
9898e098
f898e6187e7e
18
f8

Card3:
00
18181818
9898e098
f898187efe
18
f8

// Update Still not figured out how to solve this, anyone has an idea?

Solution

I've got the desired result using this code:

var SerialPort = require('serialport');

var sp = new SerialPort('/dev/tty.usbserial-0001', {
    baudRate: 4800,
});

let package = '';
const Hexparts = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'];

sp.on('data', (data) => {
    const stringData = data.toString().trim();

    if (stringData) {
        package += stringData;
        if (package.length == 10) {
            let text2 = '';
            let text3 = package;
            for (const c of text3) {
                text2 += Hexparts[c.charCodeAt(0) - 48];
            }
            const RFID_Data = text2;
            console.log(RFID_Data);
        }
    } else {
        package = '';
    }
});