Theme helper for {{content}}?

Developer help
1

I wonder, if there is not a {{#foreach content }}{{/foreach}} theme helper:
Looping through the content of a post/page, where I have access to the
provided components (images, galleries, markdowns, html …) before or after they are rendered.
I also haven’t found an Content API Endpoint for that.

2

There’s just one content object per post or page. If you need to process it, look at client side JavaScript.

3

So I can do something like

{{#get "pages" filter="tag:swipe" as |pages|}}
        {{#foreach pages}}
            <div style="display: none">
                {{content}}
            </div>
        {{/foreach}}
    {{/get}}

and then I parse it client side:

<script>
            const images = document.querySelectorAll('.kg-image-card img, .kg-gallery-card img');
            const slidediv = document.querySelector('.swiper-wrapper');
            let html = []
            images.forEach(function (image) {
                html.push(`<div class="swiper-slide">
                <div class="slide-img">
                  <img src="${image.src}" >
                </div>
              </div>`)
            });

            slidediv.innerHTML = html
        </script>

This seems the only way …
Thank you.