Modify firewall rule to allow incoming connection for a specific port in an electron app

Question

I am trying to create a local server accessible via local network in my electron app. I want to allow incoming access to a specific port.

import server from "./server";
import os from "os";

//TODO determine the local network ip i.e LAN IP
let networkIP = '';

const networkInterfaces = os.networkInterfaces();
//console.log(networkInterfaces);

if (networkInterfaces.hasOwnProperty("lo")) {
  delete networkInterfaces.lo;
}

let noConnectedNetwork = true;

let networkAddresses = [];

Object.keys(networkInterfaces).forEach((key) => {

  let networkInterface = networkInterfaces[key];
  for (let i = 0; i < networkInterface.length; i++) {

    let nInterface = networkInterface[i];

    if (!nInterface.internal && nInterface.family === "IPv4") {
      networkAddresses.push(nInterface.address);
      noConnectedNetwork = false;
    }
  }

});

if (networkAddresses.length > 0) {
  networkIP = networkAddresses[0];
} else {
  //Start a Wi-Fi hotspot if Wi-Fi hardware is available and get the assigned local IP.
}

//Here I want to enable access to port 6795 for the IPs stored in the networkIP

const eServer = {
  start: () => {
    server.start(networkIP);
  }
};

I want the firewall rule to be cross-platform i.e, works on linux(ufw/iptables), mac and windows.

Also, how do I check for wifi hardware and start a hotspot??