Understanding featured based arquitecture in React

I’m implementing an ecommerce in react with a feature-based architecture but I dont know where to place those functionalities that are shared between features but are specific enough to belong to a feature and not to a common folder, like auth or cart features.

I have an Auth feature where I put components like login or resetPassword and are isolated in an Auth folder, but I need things like useAuth hook to verify if a user is authenticated in any place in the aplication.