For those who didn't reach the end of the README.md, it seems to use an electron-alternative called grader, from the same author: https://github.com/i5ik/grade

For those who didn't reach the end of the README.md, it seems to use an electron-alternative called grader, from the same author: https://github.com/i5ik/graderjs https://github.com/i5ik/graderjs It runs server and downloads Chrome (if not available already) and starts it in app mode.