Modify the body at edge with Cloudflare and StackPAth

modify-body.ts

export async function personalizeBody(
  response: Response,
  request: Request
): Promise<Response> {
  const originalBody = await response.text();
  const newBody = originalBody.replace(
    /{{ timestamp }}/g,
    new Date().toUTCString()
  );
  const modifiedResponse = new Response(newBody, response);
  modifiedResponse.headers.set("Content-Length", String(newBody.length));
  return modifiedResponse;
}