nodejs server with request event listener

server2.js

// npm init
// npm i http -S
// npm i http-status-codes -S


const port = 9000;
http = require('http');
httpStatus = require('http-status-codes');
app = http.createServer();


const getJSONString = obj => {
    return JSON.stringify(obj, null, 2);
};



// event listener
app.on('request', (req, res) => {
    res.writeHead(httpStatus.OK, {
        'Content-Type': 'text/html'
    });
    let resMessage = `
    <style>
        h1{
            display: flex;
            align-items: center;
            justify-content: center;
        }
    </style>
    <h1>Hello Node server</h1>`;
    res.end(resMessage);

    console.log(`Method: ${getJSONString(req.method)}`);
    console.log(`url: ${getJSONString(req.url)}`);
    console.log(`headers: ${getJSONString(req.headers)}`);
});

// run server
app.listen(port);
console.log(`server is active: ${port}`);