My favorite is The Curatist , a news reader and inspiration collective for architects. (Think it as muz.li for architects :) ) Node + Vue. I'm a huge fan of Vue.js, but it's developing so quickly that I have to update my side projects almost every week because something new is coming out :)

A great write on Koa 2, and how it utilizes ES2017, especially the async-await pattern; https://www.smashingmagazine.com/2016/08/getting-started-koa-2-async-functions/