I am trying to implement a connection resolver for a type that I have and I'm using apollo-server (not that I think that matters). For some reason, this just returns a "cannot return null for non-null field" error:

async personConnection(parent, args, context, info) {
    return await prisma.personsConnection()
  }

However, when I add the properties one by one:

const aggregate = await prisma.personsConnection().aggregate()
...
return { aggregate, pageInfo, edges }

This works

I got the same error, I implemented the aggression by myself with raw sql request

Shouldn't be this way. I'm trying to update prisma and see if that solves anything

If you take a look at the return type of

personsConnection

, you’ll see that

aggregate

isn’t part of the response. The reason why it’s not there is because it might be costy to make the

count

, so you have to do it yourself manually!

It is in the client that I get generated:

export interface PersonConnectionPromise
  extends Promise<PersonConnection>,
    Fragmentable {
  pageInfo: <T = PageInfoPromise>() => T;
  edges: <T = FragmentableArray<PersonEdge>>() => T;
  aggregate: <T = AggregatePersonPromise>() => T;
}

The result of

personsConnection

is not in

PersonConnectionPromise

, but in the extended

PersonConnection

interface. What you see here are the methods available for

prisma.personsConnections().something()