Summary: For some internal Instagram diffs, and some external ones (auto-detection of dirty nodes). We need to give the dirty properties a little love. This adds a getter to find out if your node is dirty, and makes sure that the leaf node is properly setup before it is marked dirty to prevent a crash.
Reviewed By: emilsjolander
Differential Revision: D4549241
fbshipit-source-id: 36eda6fdb4ea7f968d126aab6da67896f4a01d40
55fe6f0bc9