Author here. Good question! I made a book just like that before[1]. The decision to split the books was a conscious one. In writing JavaScript Application Desi

Author here. Good question! I made a book just like that before[1]. The decision to split the books was a conscious one. In writing JavaScript Application Design, I found that very different concepts ended up being tied together for no good reason other than being on the same book. The series, instead, clusters all the ES6+ teaching on its first book. This leaves me open to assuming ES6+ knowledge across the rest of the series, being able to use ES6+ language features in my prose, etc. At the same time, while tooling may be relevant to deployments and maybe testing, it's only tangentially relevant to proper application design, which is the subject matter of books 2 & 3. [1]: https://ponyfoo.com/books/javascript-application-design https://ponyfoo.com/books/javascript-application-design