1. DomName('WorkerGlobalScope.close')
  2. DocsEditable()
  3. Experimental()
void close()

Source 

@DomName('WorkerGlobalScope.close')
@DocsEditable()
@Experimental() // untriaged
void close() => _blink.BlinkWorkerGlobalScope.instance.close_Callback_0_(unwrap_jso(this));