How does this differ from codecrafters.io?
Every course now has a "work in your own editor" mode: you can download a zip with the starter code for every lesson plus a run_tests.sh that runs the full test suite locally. After that, you can push it to a public GitHub repo, we will judge it based on our grading system and internal tests
Isn't that the best part of codecrafters? Being able to just use your own text editor instead of a janky web based one which loses everything you typed on page refresh?