The problem is that if you try to cover too much material in one book, it isn't doing favors to anyone. That lead me to a realization that I could extract the Webpack portion into a book of its own.
SurviveJS - Webpack
This is what "SurviveJS - Webpack" is about. I took majority of the Webpack bits from the first one and packaged them up in a nicer way. The book has a tutorial showing you how to develop an effective development and production configuration. This derives directly from the old content.
There's also material that goes further and discusses more advanced Webpack related techniques. So even if there's old material, there's also something new to keep it fresh.
Just like with the first book, I hope to improve the quality of the offering further as I learn more about the topic and receive feedback. In order to support development of Webpack, I'm giving Tobias Koppers, the author of Webpack, a chunk of profits (roughly ~30%). That's the least I can do to support his efforts.
Conclusion
The buyers of the first book will receive this new book for free as I complete the split. In the meanwhile you can study the free online edition. I also don't mind if you purchase the book, but that's up to you.