Maybe React core is in ES5 but most React components are now bejng written in ES6/7 with things like decorators and async functions, not to mention immutable da

Maybe React core is in ES5 but most React components are now bejng written in ES6/7 with things like decorators and async functions, not to mention immutable data structures, and you may use Flow to substitute for static typing. I can't believe in the team behind Angular 2.x they STILL have the same basic flaw in their thinking about UI development: their ideology is in contradiction to the idea of keeping it simple yet flexible.