node-http-server.js

const http = require('http');

http.createServer((req, res) => {
  cosnt data = [];
  
  req.on('data', chunk => data.push(chunk));
  req.on('end', () => {
    try {
      console.log(JSON.parse(data));
    catch(err) {
      console.log(data.toString());
    }
  });
}).listen(4000);