New Observable based Meteor API (beta) release! No need to wrap Meteor API into Observable manually. No need to use promise-based packages such as okgrow:promise. Because new API is Observable based, which has more possibilities and more powerful! It helps write less codes!
You can track here and join the discussion.
The demo using new API: angular2-meteor-with-observables.
The demo using new API with ngrx: angular2-meteor-with-observables, ngrx branch.