Function isLongestAnimation

packages/core/src/animation/utils.ts:327–343

(
  event: AnimationEvent | TransitionEvent,
  nativeElement: HTMLElement,
)

 * @returns
 */
export function isLongestAnimation(
  event: AnimationEvent | TransitionEvent,
  nativeElement: HTMLElement,
): boolean {
  const longestAnimation = longestAnimations.get(nativeElement);
  // If we don't have any record of a longest animation, then we shouldn't
  // block the animationend/transitionend event from doing its work.
  if (longestAnimation === undefined) return true;
  return (
    nativeElement === getEventTarget(event) &&
    ((longestAnimation.animationName !== undefined &&
      (event as AnimationEvent).animationName === longestAnimation.animationName) ||
      (longestAnimation.propertyName !== undefined &&
        (longestAnimation.propertyName === 'all' ||
          (event as TransitionEvent).propertyName === longestAnimation.propertyName)))
  );
}

/**
 * Stores a given animation function in the LView's animation map for later execution