Vite 7

Build tooling and dev server for React projects. Vite 7 (June 2025) is ESM-only, requires Node.js 20.19+ / 22.12+, and defaults browser target to baseline-widely-available. The user's stack uses rolldown-vite (Rust-based drop-in replacement), @vitejs/plugin-react, @tailwindcss/vite, @tanstack/router-plugin, @cloudflare/vite-plugin, and @tanstack/react-start.

Critical Rules

Plugin Order Matters

TanStack Start or TanStack Router plugin MUST come before @vitejs/plugin-react:

plugins: [
  tanstackStart(),      // or tanstackRouter() for SPA
  tailwindcss(),
  react(),              // ALWAYS last among framework plugins
]

Wrong order causes route generation failures and HMR breakage.