Svelte 5 errors when migrating from Vite

[theoparis]

File: /home/theo/src/ratata/src/App.svelte:1:1
  × ESModulesLinkingError: export 'legacy_api' (imported as '$') was not found in 'svelte/internal/client' (module has no exports)
     ╭─[309:22]
 307 │
 308 │     $.append($$anchor, div);
 309 │     return $.pop({ ...$.legacy_api() });
     ·                       ────────────
 310 │ }
 311 │
     ╰────

 @ ./src/main.ts

File: /home/theo/src/ratata/src/App.svelte:1:1
  × ESModulesLinkingError: export 'mark_module_end' (imported as '$') was not found in 'svelte/internal/client' (module has no exports)
     ╭─[312:0]
 310 │ }
 311 │
 312 │ $.mark_module_end(App);
     · ─────────────────
     ╰────

 @ ./src/main.ts

Any ideas? Is this considered an rsbuild bug?

[chenjiahan]

Can you provide a minimal reproduction?

[theoparis]

This issue seems to only be occuring with yarn berry (pnp). I just tried using npm and it works fine. I can still provide a reproduction repository though.

[theoparis]

It appears web-infra-dev/rspack#7639 was merged a while ago but rsbuild does not have support 👀
I updated rsbuild and now I get errors like these

 × Module not found: Can't resolve 'esm-env' in '/home/theo/.yarn/berry/cache/svelte-npm-5.25.3-706db951c0-10c0.zip/node_modules/svelte/src'
    ╭─[11:20]

Here is the repository being used: https://github.com/dyedev/ratata