Right after Angular 2.0 was announced and the break of everything we worked hard on learning, I moved to React.
After a few months with React, were I had to keep up with the fast changing tools I reached to a point where instead of developing features I spend time on tools and framework.
So I moved to Ember.js and I got to tell you that it’s a love at first sight.
They simplified the framework. Instead of having many types of controllers, views and routes, we have just components and routes. They replaced the rendering engine with a new one (glimmer) which is super fast (was inspired by react). Ember with the Ember CLI provides an amazing environment which includes testing, development server, api mocking server, es6 compilation, bundling and so much more.
You definitely should checkout Ember.js