Function mockAllIsIntersecting

src/test-utils.ts:235–245

(isIntersecting: boolean | number)

 * @param isIntersecting {boolean | number}
 */
export function mockAllIsIntersecting(isIntersecting: boolean | number) {
  warnOnMissingSetup();
  for (const [observer, item] of observers) {
    triggerIntersection(
      Array.from(item.elements),
      isIntersecting,
      observer,
      item,
    );
  }
}

/**
 * Set the `isIntersecting` for the IntersectionObserver of a specific element.