How to specify folders other than client to support client only code?

I’m wondering if there is a way to config folders other than client to support client only code?

Any folder hiearchy containing a client subfolder will ensure that the subfolder files only get loaded on the client.

app
  +-- myFolder
        +-- anotherFolder
              +-- client <- files in this folder go on the client

Alternatively, you can put files in the imports/ folder tree and explicitly pull them in where needed using import.