Cannot find file exported with `files` in package.json in monorepo

[jansedlon]

Describe the bug

In a monorepo, if an internal package (in a monorepo) exports files in package.json file like this

{
  "name": "@monorepo/internal-package",
  "private": true,
  "files": [
    "tsconfig.remix-app.json"
  ]
}

And this package is installed and referenced in tsconfig.json

{
  "extends": ["@monorepo/internal-package/tsconfig.remix-app.json"],
}

And this config is used in vite.config.ts

export default defineConfig({
  resolve: {
    tsconfigPaths: true
  }
})

Then the app crashes with error that the tsconfig file could not be found.
This worked to version 7.1.19, version 7.1.20 broke it.

Reproduction

https://github.com/jansedlon/rolldown-vite-repro

Steps to reproduce

Run pnpm i followed by pnpm dev

System Info

System:
    OS: macOS 26.1
    CPU: (16) arm64 Apple M3 Max
    Memory: 3.01 GB / 48.00 GB
    Shell: 4.0.2 - /opt/homebrew/bin/fish
  Binaries:
    Node: 24.11.0 - /Users/jansedlon/.local/share/nvm/v24.11.0/bin/node
    npm: 11.6.1 - /Users/jansedlon/.local/share/nvm/v24.11.0/bin/npm
    pnpm: 10.12.4 - /Users/jansedlon/.local/share/nvm/v24.11.0/bin/pnpm
    bun: 1.3.1 - /Users/jansedlon/.bun/bin/bun
  Browsers:
    Brave Browser: 141.1.83.118
    Chrome: 141.0.7390.123
    Safari: 26.1
  npmPackages:
    @vitejs/plugin-react: ^4.7.0 => 4.7.0 
    rolldown-vite:  7.1.20

Used Package Manager

pnpm

Logs

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs and the Rolldown-related guide.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.

[sapphi-red]

I get the following error. Is this the error you get?

Error: Tsconfig not found @total-typescript/tsconfig/bundler/dom/app

I don't think files is related here. I think it's failing to resolve the tsconfig specified in extends that is replaced in a different package.

[jansedlon]

@sapphi-red Nono, this is the error. It cannot find the monorepo's packages tsconfig, not the @total-typescript one

[sapphi-red]

This is fixed since rolldown-vite v7.2.0-beta.3.