Where can I find the documentation?

I can’t find any docs other than the few articles here:
But those are just “getting started” articles with some basic examples. I feel like I must be missing something.

Where can I find, for example, a list of JS events and methods for handling subscriptions? Luckily there’s a post where somebody already figured out the events, but isn’t there a proper reference somewhere?

Just to clarify where I’m coming from - I didn’t implement an EventStore server, my task is to create a kind of a backend-for-frontend service that implements the NodeJS gRPC client. So the client is where I’m starting working with EventStore, and I’m not seeing any way (other than digging into the source code of the client) to figure out things like closing the subscription.