From the authors
We will use NodeJS as a platform instead of a browser. We believe that fundamental topics should be learned in isolation and to code in browsers you have to bother yourself with HTML, bundling, AJAX, asynchronicity, etc. – they just carry too much "extras".
Our goal is to make the best timeless intro course for everyone who wants to learn programming. The target audience is totally not limited to future web developers. For the record, this course could be translated into Python, Java, whatever and most changes would concern only the syntax.