Cloudflare worker proxy for signed AWS S3 URLs

worker.js

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

async function handleRequest(event) {
  let url = new URL(event.request.url);
  
  url.hostname = 'my-secure-bucket.s3-us-east-2.amazonaws.com';
  
  let response = await fetch(url);
  response = new Response(response.body, { ...response});

  return response;
}