Read assets from imports directory

I know that usual way to read files is to use private directory and Assets functionality.
But I want to do my modules from imports directory modular and keep them independent as much as possible.
Thats why I need to put assets directly to imports. E.g.:

imports/module1/assets/file1.txt
imports/module2/assets/file2.txt

Is there a way to include this files into build bundle and read them after application start?

I’ve looked at Build Plugin API, but it’s only for meteor packages, as I understand.