async function handleRequest(request) {
  // Retrieve the cookies from the current request 
  const cookies = request.getCookies();
  const cookieCount = cookies.get('count');
  // Increment the count
  const count = Number(cookieCount && cookieCount.value || 0) + 1;
  // Update the count in the cookie
  cookies.set('count', String(count));

  const response = new Response(The count is: ${count});
  // Set the response cookies
  response.setCookies(cookies);
  return response;
}

addEventListener('fetch', (event) => {
  event.respondWith(handleRequest(event.request));
});