Cloudflare Workers TypeScript

// src/index.ts
const GIF = Uint8Array.from(atob('R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw=='), (c) => c.charCodeAt(0));

export default {
  fetch(request) {
    if (new URL(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' },
    });
  },
} satisfies ExportedHandler;