elm-test-rs VS elm-live

So I'm super interested in knowing more about your setup that makes it so much faster for elm-test than elm-test-rs. Would you mind open an issue in https://github.com/mpizenberg/elm-test-rs ?

To actually run the tests, however, there are currently two options. The first, as noted above, is node-test-runner, which is available from npm at elm-test. This utility will run the tests as defined in your Elm code, and return the results. There is a second option, elm-test-rs, which is written in Rust instead of Node. It has a handful of features that node-test-runner does not have, as well as some downsides (see the Github README for details), but in general both tools work very well for testing Elm code.

More info in the readme at https://github.com/mpizenberg/elm-test-rs

However, getting it to work in elm-live, which elm-book wraps, was a bit challenging. I wanted to layout how to get this to work in case you’d like to use Tailwind or your own CSS framework.

I recently discovered you can also use `npx kill-port 8000` to kill any process hosting at that particular port. I use elm-live, but I think it works for any service.

First on our list is elm-live. From their README, elm-live provides:

Using elm-live, you’ll run elm-live and your changes + compile errors will be reflected quickly in the open browser window.