I am a front-end developer. I just wanted to learn how bundlers and transpilers work, so I took the course. I was amazed when Babel explained the plugins... I had never looked at plugins before and just used presets without thinking, so I was watching the lecture and thought, "Why do you add everything like that?" But I was just amazed... Before explaining how presets work, you explained them one by one, so it was really helpful for me to understand why presets are needed and how Babel works~!! Those who dream of developing front-ends actually go to work, and since each company has its own guides or frequently used code collections, there are almost no cases of developing as a starter... So please definitely take the lecture~!! I highly recommend it. There are so many bundling tools like webpack, vite, gulp, etc., but I think you explain very well why those things are needed. ㅠㅠ Bundling was really scary, and setting up development was the hardest and scary, so I just wanted to do functional development, but now I'm not so scared~!! Please give us many other lectures and let us know things that will be helpful in our work. Thank you~!! Oh, and if you could add a lecture on setting things up like a basic starter, it would be really fun~!!