Fastly Compute (JavaScript) JavaScript

/// <reference types="@fastly/js-compute" />
const GIF = Uint8Array.from(atob('R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw=='), (c) => c.charCodeAt(0));

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

function handleRequest(event) {
  if (new URL(event.request.url).pathname !== '/pixel.gif') {
    return new Response('Not Found', { status: 404 });
  }
  return new Response(GIF, {
    headers: { 'Content-Type': 'image/gif', 'Cache-Control': 'no-store' },
  });
}