Reviewed By: passy Differential Revision: D17863711 fbshipit-source-id: 259dc77826fb803ff1b88c88529d7f679d3b74d8
Summary: You need to use a type guard when narrowing types in a filter. Reviewed By: danielbuechele Differential Revision: D17163782 fbshipit-source-id: aa78bdd392653ebf1080a04e62e131b607e5181b