What Framework

What Framework is a JavaScript framework designed to be as close to vanilla JS as possible, leveraging a signals-based reactivity system and a compiler-first JSX approach, rather than a virtual DOM, to achieve fine-grained updates and high performance. It features an islands architecture for efficient server-side rendering (SSR) and re-exports core functionalities from `what-core`. The current stable version is 0.8.1, with recent updates (v0.7.0) focusing heavily on performance enhancements across signal reading, computed properties, effects, and DOM rendering. Key differentiators include its no-VDOM approach, native TypeScript support, and a comprehensive ecosystem offering React-familiar hooks (useState, useEffect), built-in data fetching (SWR/TanStack Query style), robust form handling, animation primitives, and a dedicated router.