How to publish to subscription onSubscribe after Authorization

[bnussman]

I want to emit to my Subscription with pubSub.publish() when a user subscribes to my subscription following my custom auth checker. I tried to do this in the onSubscribe and onOperation of graphql-ws, but it does not get sent over the websocket, and I assume it is because type-graphql is sill checking auth and whatnot.

Is there a way to run code after a Subscription is successfully authorized? I tried a Middleware, but those only run on publish, and not only on connect.

My current workaround it to just setTimeout in the onOperation of graphql-ws but I'd like a more stable approach. Any ideas?