How to set selection to empty

I want to set the selection to empty when the editor is blurred。How should selection be dispatched (I searched the official documents and discuss and found nothing related)

      extensions: [
        drawSelection(),
        EditorView.domEventHandlers({
          blur: (event: FocusEvent, view: EditorView) => {
            view.dispatch({
              selection: // empty
            })
          }
        })
      ]

The selection cannot be empty, it must always hold at least one cursor.

thenks, then I will think of other solutions to meet my needs