I debated whether to organize this code by chapter number or by subject, and I chose the latter because it just makes more sense. Hopefully you can find your way.
Feel free to leave an issue in the repository for this code or you can also drop by the discussion board to ask a more general question.
Some of the demos in the binary/bitwise chapters show data in ASCII tables. You can follow along by running npm install in the root directory.
Have fun!