node single thread example

const http = require('http');
const url = require('url');

const port = 8888;

http.createServer((request, response) => {
  let currentPath = url.parse(request.url).pathname;

  switch (currentPath) {
    case '/hang':
      var i = 0;

      while (i < 9000000000) {
        i += 1;
      }

      response.write(currentPath);
      response.end();

      break;

    default:
      response.write(currentPath);
      response.end();
  }
}).listen(port);