Summary: public
UIExplorer tests were broken due to a refactor that didn't update the RCTShadowViewTests + an off-by-one error in the logic for exporting async methods.
Reviewed By: javache
Differential Revision: D2595810
fb-gh-sync-id: c25a8b8956bff1ef2754bba4a8f10d72a16e2954