How to compile files unrelated to the bundle?

I want to compile multiple files with mustache-loader that have nothing to do with my main bundle. Is that possible? I've described the issue on StackOverflow [here](https://stackoverflow.com/questions/55571660/render-multiple-pages-unrelated-to-the-main-app-with-webpack-and-mustache).

Start with the linked StackOverflow discussion to understand the requested workflow, then inspect the mustache-loader project entry point and its webpack integration. Done would require a clearly defined supported approach for compiling files unrelated to the main bundle, but the issue does not identify tests or implementation files.

Written by the indexing model from the issue text.