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Notes on Vite 8 and Rolldown

AI-assisted
  • vite
  • rolldown
  • build-tools

Vite 8 ships Rolldown as the bundler. Mostly a drop-in, but two things bit:

manualChunks is a function now

The object form of build.rollupOptions.output.manualChunks is gone. Use the function form instead:

manualChunks(id) {
  if (id.includes('node_modules/three')) return 'three'
  if (id.includes('@react-three')) return 'r3f'
}

optimizeDeps.esbuildOptions removed

Deprecated under Rolldown — drop it. Otherwise the upgrade from Vite 7 was uneventful, and build times dropped noticeably.