Function isValidRect

src/core/scroll-gesture.ts:253–255

(rect: Rect | undefined)

}

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

function resolveRequestedAmount(amount: number | undefined): number {
  if (amount === undefined) return DEFAULT_SCROLL_AMOUNT;