Im having issues with initializing swiper on Safari mobile iOS. It works perfectly fine on any other browser or device.
Looks like DOMContentLoaded is not working properly here:

<script>
    'use strict';
    (() => {
        const initSwipers = (allModuleBanners) => {

            const prepareSingleSwiper = (singleBanner) => {
                const sliderConfig = singleBanner.dataset.bannerconfig;
                const configJson = JSON.parse(sliderConfig);

                const sliderForBanner = singleBanner.querySelector('.swiper');
                const sliderPagination = sliderForBanner.querySelector('.swiper-pagination');
                const sliderNavigationPrev = sliderForBanner.querySelector('.swiper-button-prev');
                const sliderNavigationNext = sliderForBanner.querySelector('.swiper-button-next');

                const baseConfig = {
                    slidesPerView: configJson.slidesPerView,
                    loop: configJson.loop,
                    speed: configJson.speed,
                    effect: configJson.effect
                }

                const finalConfig = Object.assign({}, baseConfig);

                if (configJson.autoplay && configJson.autoplay.delay) {
                    const autoplayElement = {
                        delay: configJson.autoplay.delay,
                        pauseOnMouseEnter: configJson.autoplay.pauseOnMouseEnter
                    }

                    finalConfig['autoplay'] = autoplayElement;
                }

                if (configJson.navigation) {
                    const navigationElement = {
                        nextEl: sliderNavigationNext,
                        prevEl: sliderNavigationPrev,
                    }

                    finalConfig['navigation'] = navigationElement;
                }

                if (configJson.pagination) {
                    const paginationElement = {
                        el: sliderPagination,
                        type: 'bullets',
                        clickable: true
                    }

                    finalConfig['pagination'] = paginationElement;
                }

                const swiper = new Swiper(sliderForBanner, finalConfig);

            };

            allModuleBanners.forEach(singleBanner => {
                const swiperAlreadyExist = singleBanner.querySelector('.swiper').swiper;
                if (!swiperAlreadyExist) {
                    prepareSingleSwiper(singleBanner);
                }
            });
        };

        window.addEventListener('DOMContentLoaded', () => {
            const allModuleBanners = document.querySelectorAll('.banner-full-one-wrapper .swiper-banner');
            if (allModuleBanners.length > 0) {
                if (window.Swiper) {
                    initSwipers(allModuleBanners);
                }
            }
        });
    })();
</script>

I saw this workaround in here: https://developer.apple.com/forums/thread/651215 but it doesn’t seem to work for me or I’m not executing it well.