[hunterloftis]

In what way does <shop-app> not deal with complexity through composition? It is a component, composed of other components, which in turn are composed of further components.

At what arbitrary level of complexity should we stop composing?

[int_19h]

At the level where the overhead from it exceeds the benefits of componentizing. It's a subjective judgment, sure, but that doesn't make it any less real.

In particular, if something is never going to be re-used, what's the point of componentizing it?

[hackerfromthefu]

In some contexts, decomposition into easily workable scope of complexity.