How to cast event.target to type Node?

Question

typescript

Hello, I have an event handler that calls a function that iterates over dom

window.addEventListener("click", (event: Event) => {
      if (!this.checkParentsHas(event.target, this.$refs.nav))
        this.isToggled = false;
    });

and a function like

checkParentsHas(el: Node, target: HTMLElement): boolean {
      let current = el;
      while (
        current.parentNode != null &&
        current.parentNode != document.documentElement
      ) {
        if (current == target) {
          return true;
        } else {
          current = current.parentNode;
        }
      }
      return false;
    },

But typescript complains about event.target
(property) Event.target: EventTarget
Returns the object to which event is dispatched (its target).

Argument of type 'EventTarget' is not assignable to parameter of type 'Node'.
  Type 'EventTarget' is missing the following properties from type 'Node': baseURI, childNodes, firstChild, isConnected, and 43 more.Vetur(2345)

How to cast event.target to type Node