Function isViewportNode

src/core/scroll-gesture.ts:247–251

(type: string | undefined)

}

function isViewportNode(type: string | undefined): boolean {
  if (!type) return false;
  const normalized = type.toLowerCase();
  return normalized.includes('application') || normalized.includes('window');
}

function isValidRect(rect: Rect | undefined): rect is Rect {
  return !!rect && rect.width > 0 && rect.height > 0;