Prisma

anyone can link a working example repo using prisma + apollo server + subscriptions? I'm trying to set the context using:
```
onConnect: (connectionParams: any, webSocket) =&gt; {
  return {
    foo: 'bar',
}
```
But the `context` is undefined in the subscription resolver.

Here's a project link that might help you out: <https://github.com/graphql-boilerplates/react-fullstack-graphql/tree/master/advanced>

wss link init: <https://github.com/graphql-boilerplates/react-fullstack-graphql/blob/master/advanced/src/index.js#L31-L39>

this uses graphql-yoga but I'm using apollo server 2..

The `onConnect` method is called but the object I return from it is not showing up the the resolver, e.g.:
```
export const Subscription = {
  newUsers: {
    subscribe: (parent, args, ctx: Context, info: GraphQLResolveInfo) =&gt; {
      console.log(parent, args, ctx)
      return ctx.db.subscription.user({}, info)
    },
  },
}
```
ctx is always `undefined`

Please post here and so maybe others can see the solution

I had to return `connection.context` from the `context:` method because `onConnect` runs **before** the `context:`