Deprecation Guide for Ember.Component#currentState

The currentState property on Ember.Component instances is a private property that Ember uses internally to deal with the various states a component can be in (in DOM, pre-render, destroying, etc). Unfortunately, this removes a pretty common term (currentState might be used for many things in a user-land component).

In Ember 2.1 the internal .currentState property has been moved to _currentState to avoid conflicts.

Please keep in mind that .currentState / ._currentState is still private and should not be used/relied upon outside of Ember internals.