Can you clarify what you mean by "interface as a function of state"? All the templated-frameworks still fit this definition... they are reactive to the state of

Can you clarify what you mean by "interface as a function of state"? All the templated-frameworks still fit this definition... they are reactive to the state of your component. In fact, they are more performant than React because their template syntax provides static analysis, so the app can be optimised at compile time.