A lot of frameworks try to cover all three of these, and that's where you tend to see a lot of feature churn. I would recommend picking a rendering library (like react) and writing your own routing and state library, even if it's just a light abstraction on top of an existing library. This will make it way easier to upgrade or move in the future, as you will control the API.
- Routing
- State
- Rendering
A lot of frameworks try to cover all three of these, and that's where you tend to see a lot of feature churn. I would recommend picking a rendering library (like react) and writing your own routing and state library, even if it's just a light abstraction on top of an existing library. This will make it way easier to upgrade or move in the future, as you will control the API.