throw inside responseMiddleware does not work as expected

[aaronadamsCA]

I think I should be able to throw errors inside response middleware. Simplest example:

  return new GraphQLClient(url, {
    responseMiddleware: async (response) => {
      throw new Error("TEST ERROR");
    },
  });

However this just results in a JS engine complaint, while execution continues unaffected:

Unhandled Promise Rejection: Error: TEST ERROR

I would not expect a thrown error to be turned into an unhandled promise rejection.