Summary: Make it possible to ask whether a user is logged in. This won't tackle token expiration but it's consistent with the internal API we have through the `isLoggedIn` atom. Reviewed By: lblasa Differential Revision: D37422274 fbshipit-source-id: 2d3a5e27f5dbbe866d5392403e690faf2f1156b2
flipper-common
Utilities that are shared between flipper-ui, flipper-server and flipper-plugin.