Hello, I worked at a RethinkDB integration for Meteor (https://github.com/Slava/meteor-rethinkdb) for a week as my "hack" project.

I must say, there seems to be a lot of work to be done, before we can call this implementation "stable" for kind of quality bar Minimongo (https://github.com/meteor/meteor/tree/devel/packages/minimon...) has in Meteor. It is not uncommon to see Reqlite queries to fail because of simple bugs.

Not to say that the library is hopeless, Neumino did a lot of grunt work that makes it easy to test and contribute. See this thread where we discuss the missing functionality: https://github.com/neumino/reqlite/issues/3