🏇 Well, there is no contributing guide.
🎓 This project (among the other projects in my account) is meant for learning. So there is no right or wrong contribution.
👩💻 Just create a PR, explain what it should do and that's it.
🕵 If you do want to do more, you can add tests and make sure they pass by run npm test.
🤔 If you have any question about anything in the code or in the stack of this prject, please create an issue and I will do my best to help you.
Happy coding!