I used bookshelves a couple years ago and while it was very good on paper, I quickly ran into a lot of quirks and bugs for advanced usage. There was an obvious

I used bookshelves a couple years ago and while it was very good on paper, I quickly ran into a lot of quirks and bugs for advanced usage. There was an obvious lack of resources to develop it, and after contributing to it a bit I switched. Reliability is the #1 feature in an ORM in my opinion, and I didn't get that confidence from using bookshelves. I later moved to sequelize, and it worked flawlessly from the get go, give it a try. You can compare the Github activity, you'll see it's thriving, and everything is much cleaner. The performance is also way ahead, as last time I used it bookshelves relied on Backbone-esque models underneath, making it way slower for big nested queries.