This is a Mimosa module. The goal is to streamline the process of building a site with multiple minimized and optimized r.js modules. This is useful for larger sites where you may have some primary application code, and additional assets that can be loaded after the application has been started.
More detailed documentation is needed (coming soon), but here is a quick overview.
There are a number of things that you can do by customizing the config a bit. The documentation (and some examples) for these features are coming soon. For now, here is a quick overview:
The version of feature is the primary goal of this module. The other features were necessary to support this goal cleanly. This arose from the need to support multiple versions of the same site. Specifically, this means different versions for different brands, and also for different device types (mobile vs desktop). The feature allows you to specify that a given module builds on top of another module, overriding any matched resources. That is to say that if moduleB is a versionOf moduleA, it will include all of moduleA's resources as well as all of its own resources, replacing those of moduleA where appropriate.
This is difficult to explain and comprehend from a text description, and an example of all these features is hopefully coming soon (as I get time).