Request for JavaScript Codebase Documentation

[NelsonEUrrutia]

Please provide comprehensive documentation for the entire JavaScript codebase, especially focusing on key sections like the cart.

A clear documentation to understanding the JavaScript architecture, particularly in relation to the cart, will facilitate the integration of custom functionalities requested by some stores.

The absence of sufficient guiding documentation has made it challenging to comprehend and integrate new code.

[ryanm-bw]

I'd whole-heartedly welcome this. Even a list of components and the purpose they serve would be immensely helpful (ie. what is details-disclosure.js and do we need it?)