 //
 
 import Foundation
-#if os(OSX)
+#if os(OSX) || os(watchOS)
     internal let MemoryWarningNotification = NSNotification.Name("Siesta.MemoryWarningNotification")
 #elseif os(iOS) || os(tvOS)
     import UIKit

            [weak self] _ in
            self?.flushUnused()
            }
#endif
        }

    deinit


    init()
        {
        lowMemoryObserver =
            NotificationCenter.default.addObserver(
                forName: MemoryWarningNotification,
