Sorry, I did not get how to use this on client side.

[belokonm]

Can you share some example ,please?

[copleykj]

This package only runs server side and publishes data to your collections on the client.. You access the data through the collections just as you would if you just published a cursor from the publication.

[belokonm]

thank you for your respond, but it is still did not answer on my question.
If I have 2 collections books and users.
books {_id, title, userId} users:{_id, name, surname}
How I should access to User name?
books.users.name or books.name or your variant ,please?