Problem with webpackBundlingMode := BundlingMode.LibraryOnly() and the generated entrypoints.txt file

[kalejami]

First of all. Thanks for the great project :)

I run in some problems with webpackBundlingMode := BundlingMode.LibraryOnly().

If I observed it the right way an entrypoint.txt file is generated in the target folder from which the entrypoints.js file is generated. Every used @JSImport in the sources of the project will be used to generate these files.

Now to my problem. If I use different or no JsImports in the tests of the project my entrypoints.txt file will be empty. And if I start the server with this empty file the client-fastopt-library.js will have no module.exports from the endpoint.js file and the web page can't be rendered because of the missing dependecies.

I created a sample project to reproduce the problem:

https://github.com/kalejami/scalajs-bundler-test

In sbt shell following steps will cause this problem:

1. serverJVM/reStart <-- server is running and all jsDependencies are ok, web page is rendered. everything is fine.
2. clientJS/test <-- will overwrite the entrypoints.txt and js so no module.exports from endpoint.js in client-fastopt-library.js anymore
3. serverJVM/reStart <- won't touch entrypoints so the jsDependencies in library.js are missing and the web page won't load anymore