Subscription types are incorrect

[affanshahid]

Given a schema:

type Subscription {
  status(acdEngineId: Int!): JobStatus!
}

type JobStatus {
  jobStatus: String!
}

and types:

export interface JobStatus {
  jobStatus: string;
}

The generated subscription types looks like this:

export interface Type {
    status: {
      subscribe: (
        parent: undefined,
        args: JobStatus,
        ctx: Context,
        info: GraphQLResolveInfo
      ) => AsyncIterator<JobStatus> | Promise<AsyncIterator<JobStatus>>;
      ...
    };
  }

Which implies that we need an AsyncIterator that yields objects of type JobStatus, that is to say:

{
   jobStatus: 'something'
}

But when I use a custom written AsyncIterator to achieve this, I get errors saying jobStatus cannot be null. What I actually need to yield is the whole data payload:

{
   status: {
      jobStatus: 'something'
   }
}

Is this a bug or am I doing something wrong?

EDIT: I feel this is also apparent in graphql-yoga examples, we need to return the entire payload i.e: https://github.com/prisma/graphql-yoga/tree/master/examples/subscriptions

type Counter {
   count: Int!
   countStr: String
}

type Subscription {
    counter: Counter!
}

pubsub.publish(channel, { counter: { count: count++ } })

instead of just

pubsub.publish(channel, { count: count++ })

Versions

graphqlgen: 0.6.0-rc9 OS: Windows 10