Bluebird is much faster and easier to debug than native promises. It is very feature rich and it runs _everywhere_. It also converts callback APIs to promises a

Bluebird is much faster and easier to debug than native promises. It is very feature rich and it runs _everywhere_. It also converts callback APIs to promises at one go. That said, on a client-side app there are cases where I'd use native promises. On the server - not a chance.