How to use the @better-scroll/core/src/__tests__/__utils__/event.createEvent function in @better-scroll/core

export function createTouchEvent(
  firstFingerPoint: { pageX: number; pageY: number },
  secondFingerPoint?: { pageX: number; pageY: number }
): CustomTouchEvent {
  const e = createEvent('Event', 'touch') as CustomTouchEvent
  e.touches = [firstFingerPoint]
  if (secondFingerPoint) {
    e.touches.push(secondFingerPoint)
  }
  return e
}