I think it's a good introduction to front-end testing. There are quite a few typos in the source code on github. I recommend that you listen to it while keeping in mind that it's a lecture for intermediate or higher level students. If you don't have a solid foundation in js, you probably won't understand the lecture. Also, since it includes concepts such as DI and SRP, I think you'll be able to fully understand the lecture content if you understand these concepts. Thank you for the lecture.