33 function registerWatcher(watcher) {  argument
34   watchers.add(watcher);
37 function unregisterWatcher(watcher) {  argument
38   watcher.close();
39   watchers.delete(watcher);
47   const watcher = fs.watch(  constant
52         done(watcher);
55   registerWatcher(watcher);
60   const watcher = fs.watch(  constant
64         done(watcher);
67   registerWatcher(watcher);
72   const watcher = fs.watch(  constant
77         done(watcher);
79         done(watcher);
82   registerWatcher(watcher);