Question 1

How to integrate Feliz with existing JavaScript React components?

Accepted Answer

Feliz supports interoperability via Fable's JavaScript interop features—you can wrap JS components using Feliz's prop system or use dynamic imports, but it may require manual type definitions for full type safety.

Question 2

Feliz vs Fable.React: which one should I use?

Accepted Answer

Feliz is a more modern and type-safe alternative to Fable.React, offering better IntelliSense and zero bundle impact. Choose Feliz for new projects prioritizing developer experience; Fable.React might be better for legacy codebases.

Question 3

How to handle forms in Feliz with Elmish?

Accepted Answer

Use the React.useElmish hook to manage form state via Elmish messages and updates, combined with Feliz's prop.onChange and prop.value attributes for input binding, ensuring type-safe form handling.

Question 4

Does Feliz support server-side rendering (SSR)?

Accepted Answer

Feliz itself is client-focused, but it can be used with Fable and .NET backends for SSR—however, setup is less straightforward than with frameworks like Next.js, and documentation on SSR patterns is limited.

Question 5

What are the performance implications of using Feliz?

Accepted Answer

Feliz adds minimal runtime overhead due to function erasure, so performance is comparable to plain React. However, the Fable compilation step might introduce build-time delays compared to native JavaScript tooling.

Question 6

How to add custom CSS classes or global styles in Feliz?

Accepted Answer

Use the prop.className attribute for CSS classes and style helpers for inline styles; for global styles, integrate with CSS-in-JS libraries via interop or use traditional CSS files imported in your project.

Feliz

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