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Vite

Vite is an open-source front-end build tool originally created by Evan You (Vue.js). Handles the hard parts of modern front-end tooling: fast HMR via native ESM in dev, production bundling via Rollup (Vite 7) or Rolldown (Vite 8, Rust-based), clean plugin API, multi-framework.

Powers most of the front-end framework ecosystem outside Next.js — Astro, SvelteKit, Nuxt, Remix.

Vite Environment API

The Vite Environment API lets a Vite-based framework describe environments (dev server, SSR runtime, worker runtime) in which user code runs. Makes Vite-based framework output portable across hosting platforms — the load-bearing property vinext exploits.

Role on this wiki

• Foundation of vinext — ~95 % of vinext is pure Vite; routing, module shims, SSR pipeline, RSC integration built as Vite plugins.
• Foundation of Astro — Cloudflare's recommended alternative for 100 %-static-content sites.
• The "alternative to Next.js + Turbopack" build-tool branch of the React ecosystem.

Seen in

• sources/2026-02-24-cloudflare-how-we-rebuilt-nextjs-with-ai-in-one-week — canonical wiki instance. Vite is the foundation Cloudflare chose for vinext over adapting Next.js output.

Related

• systems/rolldown — Rust-based bundler, Vite 8.
• systems/rollup — JS bundler, Vite 7.
• systems/vitejs-plugin-rsc — RSC plugin.
• systems/vitest — Vite-native unit test runner.
• systems/vinext — Cloudflare's Next.js reimplementation built on Vite.
• systems/astro — another Vite-based framework.
• systems/turbopack — Next.js's in-house alternative.
• systems/nextjs — the framework Vite-ecosystem frameworks position against.