"Экосистема Ruby (on Rails) с горьким привкусом, или «Как мы любим пошпынять PHP»"
https://habrahabr.ru/post/306564/
переведена на Хабре Романом Ахмадуллиным (@saggid), за что ему большое спасибо!
ParsleyJS - declarative form validation JavaScript library.
Promise nuggets a github-book by @spion with good explanation and examples for Promises usage. Mostly on Promises alternative to async callbacks approach.
Bluebird - javascript promises library aimed to be almost "as fast as regular callback code" (and 100/10 times faster then Q and when). Worth to try out.
I was waiting for it so long :) Videoconverter.js - FFmpeg converted in JavaScript via Emscripten. It works in client browser, really works. It does not support x264 codec yet, but could be useful to create a video preview on client side etc.
How to install and copy CSS/JS resources via Composer using Composer plugin.