Tabs
Tabs

Summary: fixing ts-strict errors

Reviewed By: passy

Differential Revision: D17181149

fbshipit-source-id: 43b12336e6467e0b134087fdabfd21f414741188

facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper