server.js

let http = require("http");
let url = require("url");
let querystring = require("querystring");
let static = require("node-static");
let file = new static.Server(".");

function accept(req, res) {
  if (req.url == "/load") {
    res.writeHead(200, {
      "Content-Type": "text/plain",
      "Cache-Control": "no-cache",
      "Content-Length": 90000,
    });

    let i = 0;

    let timer = setInterval(write, 1000);
    write();

    function write() {
      res.write(String(i).repeat(10000));
      i++;
      if (i == 9) {
        clearInterval(timer);
        res.end();
      }
    }
  } else if (req.url == "/json") {
    res.writeHead(200, {
      // 'Content-Type': 'application/json;charset=utf-8',
      "Cache-Control": "no-cache",
    });

    res.write(JSON.stringify({ message: "Hello, world!" }));
    res.end();
  } else {
    file.serve(req, res);
  }
}

// ----- Konsoldan server sifatida yoki modul sifatida accept ni ishga tushiring ------

if (!module.parent) {
  http.createServer(accept).listen(8080);
} else {
  exports.accept = accept;
}