I usually don't leave reviews, but thank you for distributing such a useful lecture for free. As a beginner, after going through the difficulties of backend languages and HTML CSS JS, and trying to learn React or Vue, unfamiliar grammars compared to the existing JS suddenly appear, and on top of that, npm runs like a Linux command, and package.json is suddenly installed without knowing English, so many people tremble in fear and give up. I think 80~90% of those can be prevented with what you explained here. Even the fact that you teach the concepts in a kind way will be a great help to many confused developers so that they don't go bankrupt.