Vite 8 is approaching stable release, powered by Rolldown (replacing Rollup + esbuild). This issue tracks the work to ensure Storybook is compatible with Vite 8.

Investigations

Peer dependency range

Extending the vite peer dependency to ^5.0.0 || ^6.0.0 || ^7.0.0 || ^8.0.0 across all Vite-based packages:

• @storybook/builder-vite
• @storybook/react-vite
• @storybook/vue3-vite
• @storybook/svelte-vite
• @storybook/sveltekit
• @storybook/nextjs-vite
• @storybook/react-native-web-vite

build.rollupOptions -> build.rolldownOptions

Vite 8 renamed build.rollupOptions to build.rolldownOptions. The builder should detect the installed Vite major version at startup and uses the correct key. Backwards compatible with Vite 5-7.

Migration guide review

Storybook's Vite integration does not use any of the following deprecated/removed Vite 8 features, so no further changes are needed:

• esbuild / optimizeDeps.esbuildOptions / transformWithEsbuild (now Oxc)
• build.commonjsOptions / build.dynamicImportVarsOptions
• resolve.alias[].customResolver
• manualChunks / parseAst / parseAstAsync
• Unsupported Rolldown hooks (shouldTransformCachedModule, resolveImportMeta, renderDynamicImport, resolveFileUrl)

References
Vite 8 Beta announcement
Vite 8 Migration guide