Hi, I made an open-source plugin that generates files and judges your solutions against sample test cases parsed from your browser in any programming language or build tool that you may use. It has evolved for the past 3 months and is now simpler and more flexible with a documentation to quickly get started and more. Don't forget to star this project on GitHub if you like it.
I would love to hear your feedback, you can mail me firstname.lastname@example.org or just comment down below. Thanks.