There is definitely a learning curve, and sometimes it can feel like you're fighting against TypeScript instead of having it work for you. However, there have d

There is definitely a learning curve, and sometimes it can feel like you're fighting against TypeScript instead of having it work for you. However, there have definitely been cases of it being useful. Upgrading from React v0.12 to v0.13 was great because I immediately saw all of the places where the API needed updating. I think moving forward much of the friction will slowly removed (added ES6 features, JSX support, etc).