runtimes/google/lib/follow/bsd_darwin_linux_windows_config.go

// +build darwin freebsd linux netbsd openbsd windows

package follow

// newFSWatcher starts and returns a new fsnotify-based fsWatcher.
// filename specifies the file to watch.
func newFSWatcher(filename string) (fsWatcher, error) {
	return newFSNotifyWatcher(filename)
}