Declare support for ajax_add_to_cart?

Hi,

I’ve spent quite a bit of time googling around the web trying to find some example starter documentation for integrating ajax add to cart funcitonality into a bespoke WooCommerce theme, with little to no success. Most of the links I find are for out of date versions of WooCommerce, or link to paid plugins to achieve this functionality.

From looking inside woocommerce/assets/js/frontend/add-to-cart.js it looks like the ajax code is only called if a button has ajax_add_to_cart on it. I can see in woocommerce/includes/abstracts/abstract-wc-product.php that there is a supports array for “Supported features such as ‘ajax_add_to_cart’.”. How do I declare support for ajax_add_to_cart for specific products, or am I barking up the wrong tree entirely here?

Ideally I want to use the core minicart on a page, and the core add-to-cart.js woocommerce script to enable ajax functionality in my theme. For some reason I can’t find any up to date or accurate information on this in the documentation. Any links or pointers on how to do this would be really appreciated.

Thanks