StreamInterceptor type doesn't support Promise intercept

The following won’t compile but should/does work:

import {
 StreamInterceptor,
} from 'grpc-web';

const streamAuthInterceptor: StreamInterceptor<unknown, unknown> = {
  async intercept(request, invoker) {
    await authRequest(request);
    return invoker(request);
  },
};

removing the StreamInterceptor type from the variable lets it compile and it behaves as expected (adding the appropriate metadata to the request)

[someone1]

I can confirm that I did need to implement a non-promise version of the interceptor for the streamInterceptors options - reusing the unary interceptor option created Promise returns on all stream calls which was not what the types were expecting.

Again, since the token expiration/refresh is handled from a 3rd party that relies on Promises, it’d be ideal that the interceptor supported Promise-based functions.

[kurnal-volt]

any updates on this? why hasn’t this been addressed yet as it seems to be a good use case I am running into also