Cypress test http server

index.js

//cypress/plugins/index.js
let server;
module.exports = (on, config) => {
  on('task', {
    async startTestServer(data) {
      if(server) {
        await new Promise(resolve => server.close(resolve));
      }
      const port = 3000;
      const ip = '127.0.0.1';
      server = http.createServer(function(request,response) {
        response.end(data);
      });
      const address = `http://${ip}:${port}`;
      console.log(`Listening on ${address}`);
      server.listen(port, ip);
      return address;
    },
    async stopTestServer() {
      if(server) {
        await new Promise(resolve => server.close(resolve));
      }
      return true;
    }
  });
  return config;
};