text: 'use strict'
  var http = require('http');
  var os = require('os');
   
  http.createServer(function (request, response) {
    response.writeHead(200, {'Content-Type': 'text/plain'});
    response.end('Hello World\n');
   
  }).listen(3000);
   
  console.log('Server running at http://127.0.0.1:3000/');
  