Echo JS 0.11.0

IMHO, this is emphatically *NOT* the most scalable app architecture... imo, feature oriented structures work far better. A given feature may have child features, may have action creators, reducers, components, data access requests, etc, etc.  

Nested, mirrored trees organized by type is much harder to work with in practice as your related items are spread across several directories reducing the usefulness of having a directory tree for your files to begin with.

As to the mention of Axios... just wrap fetch for your needs directly.