Types for base_query.py

[rgant]

I cannot use FieldFilter in my projects because it is not typed.

 # It appears that filtering on document ID will not work for collect_group queries.
 # mypy error - Call to untyped function "FieldFilter" in typed context
 # Both FieldFilter & FieldPath have this issue sadly
 .where(filter=FieldFilter(FieldPath.document_id(), '==', program_id)), # type: ignore[no-untyped-call]

Could the google.cloud.firestore_v1.base_query module be typed?

[rgant]

Seems like maybe FieldFilter is now typed, but FieldPath is not?

[daniel-sanche]

Thanks for raising this, these should be fixed in #1057