htmx-ext-shopify gives you access to the Shopify Ajax API from HTML to progressively enhance your Liquid templates. It's an unofficial, experimental extension for htmx.
The extension manipulates API requests and responses in order to replace / update Liquid sections on the current page. The new HTML for sections comes from Bundled section rendering and inserted using htmx swapping and out of band swaps.
This behavior is controlled using existing and new (see below) hx-* attributes on the form triggering the request.
Update the customer's cart through the Shopify Ajax API and update the current page in response.