ETag header not sent

#1

We’re trying to set the etag header in a worker like this:

    const headers = new Headers();
    headers.set('ETag', 'test');

    return new Response('test', {            
        headers,
    });

but it doesn’t reach the client. Is there a list of approved headers that you can send from the worker?

#2

Found this post about that only week ETags are supported by default:

When changing to use weak etags it works just fine from the worker.