Howdy! I've just written a blog post about this, and I figured I would share it here: https://smoores.dev/post/announcing_smoores_epub/. As I've been working on Storyteller[1], I've been developing a library for working with EPUB files, since that's a large amount of the work that Storyteller does. After a friend asked for advice on creating EPUB books in Node.js, I decided to publish Storyteller's EPUB library as a standalone NPM package. I really love the EPUB spec, and I think the Node.js developer community deserves an actively maintained library for working with it![1]: https://smoores.gitlab.io/storyteller