perserve directory structure with @mods or @dirmods

[felixbecker]

Hi,
this is not really an issue and could be considered more as a question.

I try to adapt the following example especially the following lines: https://github.com/cortesi/modd/blob/master/examples/frontend.conf#L20-L29

my javascript folder structure is like this:

src/
   /controllers/
   -- hello_controller.js
  index.js

basically I have a folder structure that i would like to be preserved in the output directory otherwise browserify has problems with the given require statements

if I run the config as described in the config my .cache folder is flat

.cache
-- hellocontroller.js
-- index.js

I found @dirmods and thought this would solve my issue with the following config

src/**/*.js {
    prep: @bin/babel -s false -d .cache @dirmods 
    prep: @bin/browserify \
        .cache/index.js \
        -o web/templates/statics/js/bundle.js
}

The result is:

.cache/
  /controllers/
     -- hello_controller.js
-- hello_controller.js
-- index.js

close but not good. It creates an additional hello_controllers.js without the file structure - which I did not expect.
What do I miss here?
Thanks for any help :-)