CORS: Enhance your API's flexibility by allowing non-CORS OPTIONS requests to retrieve the "Allow" header, making it easier to understand available methods.
CORS: Improve handling of preflight requests by allowing them to be forwarded to the next handler, ensuring better integration with existing Express routes.
Improvements
CORS: Refine the handling of the "Vary: origin" header to ensure it is only added for specific origins, enhancing the accuracy of your CORS responses.