Not sure if that's what you are asking but there's a `withCredentials` option (which IIRC is the only possible option) I was looking at : https://stackoverflow

Not sure if that's what you are asking but there's a `withCredentials` option (which IIRC is the only possible option) I was looking at : https://stackoverflow.com/questions/61041389/managing-server-side-events-with-a-service-worker https://stackoverflow.com/questions/61041389/managing-server... Shared worker would actually allow for SSE in a service worker ! That's nice.