https://www.littlereddayspa.com/wp-content/plugins/nextgen-gallery…/Display/Animations/main.js?ver=2.4.0

1const animateNextGENImage = function (node, animation) {
2    const prefix = 'animate__';
3    return new Promise((resolve, reject) => {
4        const animationName = `${prefix}${animation}`;
5
6        // Images are given opacity: 0 to prevent their display before the animation effects start.
7        // So we drop the class that hides the image and immediately assign the animation class.
8        node.classList.remove('nextgen-pro-animate-images-loading');
9        node.classList.add(`${prefix}animated`, animationName);
10
11        // Remove the animation class when the effect has finished.
12        function handleAnimationEnd(event) {
13            event.stopPropagation();
14            node.classList.remove(`${prefix}animated`, animationName);
15            resolve('Animation ended');
16        }
17
18        node.addEventListener('animationend', handleAnimationEnd, {once: true});
19    });
20};
21
22const processNextGENImageAnimations = function(styleName) {
23    const containers = document.querySelectorAll('.nextgen-pro-animate-images-gallery-container');
24    containers.forEach(function (container) {
25        // Not all display types support XHR pagination; if the data-animate-all=1 is set then we force
26        // a workaround here and apply the animation to all images in the gallery, not just the first.
27        if (1 === parseInt(container.dataset.animateAll)) {
28            styleName = 'pagination';
29        }
30
31        const style              = container.dataset[`${styleName}Style`];
32        const duration = parseInt(container.dataset[`${styleName}Duration`]);
33        const delay    = parseInt(container.dataset[`${styleName}Delay`]);
34
35        container.querySelectorAll('.nextgen-pro-animate-images-image-container').forEach(
36            function(image, index) {
37                image.style.setProperty('--animate-duration', `${duration}ms`);
38                setTimeout(() => {
39                    animateNextGENImage(image, style);
40                }, (0 === index ? 0 : index * delay));
41            }
42        );
43    });
44};
45
46document.addEventListener('nextgen_page_refreshed', function() {
47    processNextGENImageAnimations('pagination');
48});
49
50processNextGENImageAnimations('firstload');