MediaWiki:Common.js

mw.loader.load('https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.8.1/slick.min.js');
mw.loader.load('https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.8.1/slick.css', 'text/css');
mw.loader.load('https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.8.1/slick-theme.css', 'text/css');

mw.hook('wikipage.content').add(function($content) {
    $content.find('.mw-custom-slideshow .slideshow').slick({
        infinite: true,
        slidesToShow: 1,
        slidesToScroll: 1,
        autoplay: true,
        autoplaySpeed: 5000,
        arrows: true,
        dots: true,
        adaptiveHeight: true
    });
});