SSR

Tanner Linsley’s AI-driven React projection experiment has become a TanStack project used in production. Redact is a smaller, React-compatible runtime that already works with Start, Next.js, Vinext, and Vite. On the server, React still handles SSR and Server Components.

The tradeoff is in rendering: Redact renders synchronously, without React’s time slicing. As the blog post acknowledges, a heavy render can still delay input. The smaller runtime therefore comes with a constraint worth considering for interfaces that need to remain responsive under load.

next-themes applies the theme as the page loads, respects the system preference, and syncs the choice across tabs. Its ThemeProvider works with both the App Router and pages/, while a hook lets components switch themes or handle multiple variants.

One architectural detail matters: the browser-stored theme is unavailable during server rendering. UI that depends on useTheme should wait until the client component mounts to avoid hydration errors. The library also updates the <html> attribute—suppressHydrationWarning is recommended—and remains independent of the CSS solution in use.

c15t 3 rebuilds consent management around a shared engine with adapters for Next.js, React, Vue, Nuxt, Astro, Svelte, TanStack Start, and plain HTML sites. Banners can be rendered into server HTML, while a consent manifest avoids waiting on the backend for every request. The reported gains depend on the deployment mode and come from benchmarks published by the project.

The migration preserves choices stored by v2, but changes APIs, packages, and the backend. Codemods handle part of the upgrade; clients and backend must move to v3 together. The release also introduces more strictly validated policy rules and a rewritten self-hosted backend supporting PostgreSQL, MySQL, and SQLite.