Summary:
Changelog: [Internal]
Separate the functionality of the isPackagerRunning() function into a new class PackagerStatusCheck with the intention of being able to use this without needing a DevServerHelper
Reviewed By: makovkastar, ShikaSD
Differential Revision: D29933318
fbshipit-source-id: d708bb987b08634015d6ee6b6c8989faba416c5a