onClose property

Stream<Event> onClose
@DocsEditable(), @DomName('IDBDatabase.onclose'), @Experimental()

Stream of close events handled by this Database.

Implementation 

@DomName('IDBDatabase.onclose')
@DocsEditable()
// https://www.w3.org/Bugs/Public/show_bug.cgi?id=22540
@Experimental()
Stream<Event> get onClose => closeEvent.forTarget(this);