I know React and TDD, but I don't know how to integrate them, so this is a great help. It might be a little difficult for those who are new to JS and React. Some people say that it's inconvenient because of frequent typos and mistakes, but I liked that I was able to learn how to solve the parts where I often make mistakes. (But it would be better if I used plugins like Lint and Prettier! 😄. )