This opinion will be unpopular, but I still stick to AngularJS. It's mature and complete, does not introduce breaking changes every day, super-easy to start pro

This opinion will be unpopular, but I still stick to AngularJS. It's mature and complete, does not introduce breaking changes every day, super-easy to start prototyping without tooling yet can work well with build system. I use it with TypeScript and only things I am missing are hot reloading and typed templates. The performance is not top but usually not limiting. Namespace clash is not really a problem if you qualify your component names. Forget all the $scope, controllers and services are just plain JS classes. Every time I see React had got shiny new pattern that breaks everything you have done so far or Angular is 4 major versions ahead of when I last checked and still not solving the architecture inconsistencies I'm glad I stayed with AngularJS.