It is way better to use 'emrun' command than python server. It supports: observe console output, you can pass command line arguments to your application. It creates server automatically.

I didn't realize that. Great point, I'm going to check it out, then update the post!

What benefit does the word "transpile" confer over just saying "compile"?

Too new for the dictionary, but typically "transpiling" is compiling where the source and target are at similar abstraction levels.