SolidJS Overview SolidJS is a declarative UI library that compiles JSX to real DOM operations — no virtual DOM, no diffing. Reactivity is fine-grained: only the exact DOM nodes that depend on changed data update. The result is near-native performance with a React-like authoring experience. Installation Reactivity Primitives createSignal — Reactive State createEffect — Side Effects createMemo — Derived State Control Flow Stores — Complex State Resources — Async Data Fetching SolidStart — Full-Stack SolidStart adds file-based routing, SSR, and server functions: File structure: Context (Dependen…