solidjs

SolidJS uses fine-grained reactivity by directly updating the DOM through signals and effects, avoiding virtual DOM overhead. This approach tracks dependencies precisely, updating only affected nodes when state changes, resulting in high-performance UI rendering.

To scaffold a SolidJS application, run `npx degit solidjs/templates/ts my-app`, then execute `npm install` to add dependencies and `npm run dev` to start the development server for building reactive UIs.

The best way to manage complex nested state in SolidJS is using `createStore`. It provides advanced state management capabilities, allowing you to update deeply nested objects and arrays reactively without requiring manual immutable updates.

Handle asynchronous data fetching in SolidJS using `createResource` combined with `Suspense`. `createResource` manages the data promise and loading state, while `Suspense` declaratively renders fallback UI until the data resolves.

Use SolidJS control flow components like `Show`, `For`, `Index`, and `Switch` for dynamic rendering. `Show` handles conditional rendering, while `For` and `Index` manage list iteration, ensuring fine-grained updates when underlying data changes.

Yes, SolidJS provides `createSignal` for managing state and `createMemo` for caching derived values. To manage side effects based on reactive dependencies, use `createEffect`, which automatically tracks signals and re-runs when they change.