I know the pitch for this is very strong but I've never seen any benefit in real life. Javascript was designed to be a client side browser scripting language, it's not equipped with a standard library that competes with other languages that were designed from day one for the server or systems programming. The skill sets of front-end and back-end developers are also very different. In my experience, when you use Node you end up with front-end devs programming back-end servers very poorly or you end up with back-end devs forced to use Node/JS. I've never actually met a seasoned back-end developer who would choose JS for the domain given no constraints.
