Reproduction link or steps

Here's a repro with the instructions -
https://github.com/brijeshb42/rolldown-treeshake-repro

Stackblitz for the same - https://stackblitz.com/~/github.com/brijeshb42/rolldown-treeshake-repro

This is just the minimal reproduction. I have been setting up tsdown to be used on https://github.com/mui/mui-x but the bundle size increase is significant for it to be considered right now.

What is expected?

Rolldown output should be correctly tree-shakeable when used through vite.

What is actually happening?

It is including extra unused code when rolldown's output code is bundled through vite. I have tested using vite only but this may be true for other bundlers as well.

System Info

System:
    OS: macOS 26.2
    CPU: (14) arm64 Apple M3 Max
    Memory: 314.36 MB / 36.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 24.10.0 - /Users/brijesh/.nvm/versions/node/v24.10.0/bin/node
    Yarn: 1.22.22 - /Users/brijesh/.nvm/versions/node/v24.10.0/bin/yarn
    npm: 11.6.2 - /Users/brijesh/.nvm/versions/node/v24.10.0/bin/npm
    pnpm: 10.27.0 - /Users/brijesh/.nvm/versions/node/v24.10.0/bin/pnpm
    bun: 1.2.17 - /Users/brijesh/.bun/bin/bun
  Browsers:
    Brave Browser: 143.1.85.120
    Firefox: 146.0.1
    Safari: 26.2
  npmPackages:
    rolldown: ^1.0.0-beta.59 => 1.0.0-beta.59

Any additional comments?

Is there a way to tell rolldown to preserve the export * as-is instead of converting/resolving all the exports and passing it through __exportAll ?