Summary: When a client disconnects while it's still initialising, we get a critical error. But this is expected to happen now and again, so adding a specific error for it, and handling it accordingly. It doesn't change the control flow, just the logging. Reviewed By: nikoant Differential Revision: D32794062 fbshipit-source-id: cf27fb9c345aa6369d338838a46e75a6b7afde41
flipper-ui-core (TBD)
Flipper's UI, agnostic of Electron vs Browser.