How to tell the difference between missing object and fetch error

[stubailo]

Per conversation with @martijnwalraven:

If you get a GraphQL error in the response, the data might have some missing fields. The missing fields are represented by null. However, null is also a valid response for any part of a GraphQL query when there is a nullable reference. So it's not possible to reliably determine which parts of the response are missing because of the server error, and which parts actually are not there, and would be null even if there were no error.

This seems like an oversight in GraphQL-JS, and perhaps the GraphQL error spec itself. @helfer have you encountered this? Any ways of getting around it?

[stubailo]

This is not possible without changes to GraphQL-JS.