Not implemented interface error

[flyhigh-hifi]

Apollo server doesn't produce errors when schema has interfaces which are not implemented yet. That causes graphql-playground and apollo cli utility to crash without any errors: in console of graphql-playground there's an js error when trying to run loop on implementations: null property.

[martijnwalraven]

Is this still an issue in recent versions of Apollo Server and graphql-js? I would expect schema validation to catch this.

[abernix]

Happy to re-open if this has continued to be problematic but I'll close it for now since it hasn't received a lot of traction and could have been resolved already.

If this is still a problem, would someone who's experiencing the problem (or anyone who comes across this issue and is able to assist) mind building a reproduction of the problem in to a runnable CodeSandbox reproduction using the latest version of Apollo Server and sharing the link to that CodeSandbox in this issue?

I'm happy to re-open if this is still occurring and someone can provide a reproduction. Thanks again!