- Adds a new `app/` directory layout and separates TypeScript projects for app, server, and shared code, improving organization and IDE support (breaking change).
- Improves the data layer with smarter `useAsyncData`/`useFetch` behavior, automatic cleanup, shared data across components, and speeds up development with a faster CLI, internal sockets, and Vite updates (feature).
- Removes Nuxt 2 compatibility and several deprecated utilities, requiring module updates, while delivering UI template refreshes, bug fixes, and performance tweaks (breaking, deprecation, minor).
v4.0.0
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Fix island payload serialization for underscore keys and deduplicate island renders during prerender
Improved build and runtime performance with lazy imports, reused scans, and skipping unchanged files across Nuxt, Kit, and Vite.
Security release addressing server‑side RCE, unauthorized component instantiation, route rule authorization bypass, DoS, and dev server path disclosure, plus a regression fix from the prior advisory.