5d4-msd1/5d4.js

const http = require('http');
const hostname = '127.0.0.1';
const port = 3000;
const requestListener = function (req, res){
    res.statusCode = 200;
    res.setHeader('Content-Type','text/plain');
    res.end("Hello World");
}

const server = http.createServer(requestListener);
   server.listen(port,hostname);