message: test: add preventDefault to mock events
diff: @@ -253,6 +253,7 @@ export function coordsToEvent (coords: MockCoords) {
  get type () { return this.coords.type },
  get pointerType () { return this.coords.pointerType },
  get buttons () { return this.coords.buttons },
  + preventDefault () {},
  }
  return event as typeof event & Interact.PointerType & Interact.PointerEventType
  