fetch.ts

export default {
  async fetch(request): Promise<Response> {
    const originRequest = new Request('https://myproxy.com', request);
    const originResponse = await fetch(originRequest, {
      cf: {
        cacheEverything: true,
      },
    });

    // cacheTag will be null, even though the response from the origin server sent it
    const cacheTag = originResponse.headers.get("Cache-Tag");
    
    return originResponse;
  },
} satisfies ExportedHandler;