Summary:
On Windows fs.watch fires multiple times after a single edit causing multiple instances of plugin compilation threads to start bogging down system resources.
This diff delays compilation by 1 second, soaking additional watch events fired for that plugin in that time window.
Reviewed By: danielbuechele
Differential Revision: D16109076
fbshipit-source-id: bc4f89d83f04487a3d32ee5cc2105fe0a8b7366c