In afterchange hooks, doc is populated, previousDoc not

[llezhava]

Hello everyone!

In afterchange hooks doc is populated to depth > 0, but previousDoc is not populated.
Akso, by default array of collection afterchange hook is: AfterChangeHook[] .

Since it's any and there is no documentation around it, I am not sure if doc will always be populated or not. Because of this I have to write type guards for each property and refetch again.

I think, that we shall get predictable types there, or see some documentation, which is describing it.

Or instead of any, we could infer there AfterChangeHook.

How do you think about approaching this issue? Id like to be able to configure it myself.