Pagination in firestore api

Question

I am trying to paginate documents with firestore beta. I am following the official docs

I see there is a pageSize param to say how many documents you want to show, b

Answer 1

Firestore range queries are based on an having anchor document. So you must know the (order-by properties of the) document that the range start with, and then use ref.startAfter(anchorDdoc).limit(10) (or ref.startAfter(valueOfAnchorDoc).limit(10)) to get the next page.

The Firestore server-side Admin SDKs have an offset() call that allows the server to determine the document to starts at. But the client-side SDKs do not have this method.