Question 1

How do I set up redux-tcomb middleware in my Redux store?

Accepted Answer

Import createCheckedMiddleware, define action types with createActionType, and apply it via Redux's applyMiddleware. For state validation, wrap your reducer with createCheckedReducer, as shown in the README example.

Question 2

Is redux-tcomb better than using TypeScript with Redux?

Accepted Answer

Redux-tcomb provides runtime validation, catching errors during execution, while TypeScript offers compile-time checks. Choose redux-tcomb if you need immediate feedback without a build step; opt for TypeScript for static analysis and broader tooling.

Question 3

Can I use redux-tcomb with Redux Toolkit?

Accepted Answer

Integration may require custom setup, as Redux Toolkit has its own patterns. You can adapt by using createCheckedMiddleware in configureStore and wrapping reducers, but it might not be seamless out of the box.

Question 4

What types of data can I validate with tcomb in redux-tcomb?

Accepted Answer

tcomb supports primitives like integers and strings, plus complex types like interfaces, unions, and refinements. This allows detailed validation for nested state structures and action payloads, as seen in the PositiveInteger example.

Question 5

How does redux-tcomb handle async actions or thunks?

Accepted Answer

The middleware validates actions before they reach reducers. For async actions, ensure dispatched actions conform to defined types—consider wrapping thunk actions or validating payloads manually in async logic.

Question 6

Are there performance tips for using redux-tcomb in production?

Accepted Answer

Runtime validation can impact performance. Consider disabling it in production by conditionally applying middleware or using it only in development, though the library lacks built-in toggles, requiring manual implementation.

redux-tcomb

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