Because I despise nitpicking stuff like indentation and spacing in pull request comments, I'd like to nudge forward our automated style checking, at least for new files being added.
I don't want to totally rewrite server.js just to get automated style checking… the blame tracking is just too useful. So let's it's just take care of that when we start splitting it out.
More discussion in #948.
Reorg of the tests: move them just alongside their code. The principle relates to grouping by coupling, not by function and is established in best-practice documents (e.g. https://github.com/focusaurus/express_code_structure#underlying-principles-and-motivations), despite its break from the tradition of a separate `test/` tree. All of today's tools can handle tests spread through the repository.
There are some good, if subtle consequences of this change:
- Since files are close at hand, friction is reduced at development time, which encourages that new tests are written to cover new behaviors.
- It's easier to find the tests that cover a particular piece of functionality.
- It's easier to see which code has tests and which doesn't.
