Describe the bug

Let's get it passing on the ecosystem CI

Here are some blockers for us:

• treeshaking/dead code removal in rolldown is not on the same level as rollups, leading to compatibility issues with some svelte features for serverside bundles [Feature Request]: remove non used dynamic import chunks rolldown/rolldown#3403
• empty CSS chunks are emitted for each Svelte file and they're also not in the Vite manifest, causing read errors when we try traverse CSS imports for mapping/inlining Extra empty CSS chunks when returning CSS in the load plugin hook vitejs/rolldown-vite#267
• viteMetadata is missing from the chunks in the SSR bundle output data. We use it to map the SSR stylesheets to the client ones for inlining CSS Chunks are missing viteMetadata when building for SSR vitejs/rolldown-vite#264

Nice to haves

• figure out how to get experimental.enableNativePlugins working https://vite.dev/guide/rolldown#enabling-native-plugins currently it causes styles to not be applied. Likely the reason is that the generated manifest doesn't include style information and therefore not loaded. Possibly related? experimental.enableNativePlugin css missing from production build vitejs/rolldown-vite#213

Reproduction

https://github.com/vitejs/vite-ecosystem-ci/actions/runs/14633802080/job/41060843890

Logs

System Info

rolldown

Severity

blocking an upgrade

Additional Information

Some tips: https://main.vitejs.dev/guide/rolldown.html#plugin-framework-authors-guide