Streamlined dependencies for a dependent project

I would like to use some of the machinery in neuroglancer for creating viewer state and turning viewer state into URLs. I'm playing around with the dependent project example, but even for a very simple dependent project (e.g., something that uses no neuroglancer exports and just logs "hello world" to the console), the resulting `dist/min/` folder is ~7 megabytes and contains a lot of stuff I'm definitely not using (`bossauth.html`, `async_computation_bundle.js`, etc).

What would I need to do in order to cleanly export just the viewer state machinery and none of this other stuff?