Reminds me of Project Oberon: https://news.ycombinator.com/item?id=38892164 and https://news.ycombinator.com/item?id=9847955

Also see https://janet.guide/ for a good introductory book to Janet.

This is the first time I'm seeing the book. The author is solid! He has just the right sense of humour for a programming book.

He works at Jane Street and was recently on their podcast§. An interesting chap, for sure!

§https://signalsandthreads.com/building-tools-for-traders/