node server for serving static files when using angular or react built in production mode

server.js

const http = require("http");
const fs = require("fs");

const pathToStaticFilesFolder = "./dist";//or whererver

http
  .createServer((req, res) => {
    console.log(req.url);
    let fileStream;
    //if no path or path doesnot contain a file extension
    if (req.url == "/" || req.url.split(".").length == 1) {
      res.writeHead(200, { "Content-Type": "text/html" });
      fileStream = fs.createReadStream(`${pathToStaticFilesFolder}/index.html`);
    } else {
      let contentType = "text/plain";
      switch (req.url.split(".").reverse()[0]) {
        //donot set content type
        case "svg":
          //svg gets xml content type, which browsers will not take as image,so.
          contentType = "image/svg+xml";
          break;
        case "js":
          contentType = "application/javascript";
          break;
        case "css":
          contentType = "text/css";
          break;
        case "json":
          contentType = "application/json";
          break;
        case "webmanifest": //PWA
          contentType = "application/manifest+json";
          break;
        default:
          contentType = "text/plain";
      }
      res.writeHead(200, { "Content-Type": contentType });

      fileStream = fs.createReadStream(pathToStaticFilesFolder + req.url);
    }
    fileStream.on("error", (...args) => {
      console.error("------------ file read error -----------\n", args);
      res.end();
    });
    fileStream.pipe(res);
  })
  .listen(2019);

Alternatively, we can install http-server with npm i http-server -g and
run in terminal
npx http-server {folder_path}
But then all the routes other than root path will only be served if accessed as localhost, we cannot access other paths with ip address. While this script, just works there too. There is a problem with serviceWorker though. which again seems to work with http-server