Cannot use React Router with Telefunc

[brillout]

Reproduction

https://github.com/brillout/telefunc-react-router/tree/repro then run:

pnpm i
pnpm run build

System Info

System:
    OS: Linux 6.8 Ubuntu 24.04.3 LTS 24.04.3 LTS (Noble Numbat)
    CPU: (8) x64 Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz
    Memory: 3.17 GB / 7.52 GB
    Container: Yes
    Shell: 5.2.21 - /bin/bash
  Binaries:
    Node: 22.14.0 - ~/.nvm/versions/node/v22.14.0/bin/node
    Yarn: 1.22.22 - ~/.nix-profile/bin/yarn
    npm: 10.9.2 - ~/.nvm/versions/node/v22.14.0/bin/npm
    pnpm: 10.14.0 - ~/.nvm/versions/node/v22.14.0/bin/pnpm
    bun: 1.1.24 - ~/.bun/bin/bun
    Watchman: 2024.03.11.00 - /home/rom/.nix-profile/bin/watchman
  Browsers:
    Chrome: 140.0.7339.127
  npmPackages:
    @react-router/dev: ^7.7.1 => 7.9.1 
    @react-router/node: ^7.7.1 => 7.9.1 
    @react-router/remix-routes-option-adapter: ^7.9.1 => 7.9.1 
    @react-router/serve: ^7.7.1 => 7.9.1 
    react-router: ^7.7.1 => 7.9.1 
    vite: ^7.1.5 => 7.1.5

Used Package Manager

pnpm

Expected Behavior

No error

Actual Behavior

> app@ build /home/rom/tmp/telefunc-react-router
> react-router build

vite v7.1.5 building for production...
✓ 70 modules transformed.
Generated an empty chunk: "_telefunc".
build/client/.vite/manifest.json                  1.54 kB │ gzip:  0.42 kB
build/client/assets/root-CJ1ldolH.css             4.61 kB │ gzip:  1.57 kB
build/client/assets/_telefunc-l0sNRNKZ.js         0.00 kB │ gzip:  0.02 kB
build/client/assets/root-D8Ym4Pml.js              1.09 kB │ gzip:  0.62 kB
build/client/assets/index-CR4ThtWQ.js             8.97 kB │ gzip:  3.68 kB
build/client/assets/chunk-B7RQU5TL-CIHSr9mg.js  115.20 kB │ gzip: 38.83 kB
build/client/assets/entry.client-DZ7-m0fo.js    186.52 kB │ gzip: 59.18 kB
✓ built in 1.70s
vite v7.1.5 building SSR bundle for production...
✓ 10 modules transformed.
✗ Build failed in 2.22s
[@brillout/vite-plugin-server-entry:telefunc:hooks] [@brillout/vite-plugin-server-entry@0.7.15][Wrong Usage] Found build server entry entry (as expected) but it's saved at /home/rom/tmp/telefunc-react-router/build/server/server/index.js which is unexpected: it should be saved at /home/rom/tmp/telefunc-react-router/build/server/server/entry.{js,mjs} instead. If you use rollupOptions.output.entryFileNames then make sure you don't change the file name of the production server entry.
    at findRollupBundleEntry (file:///home/rom/tmp/telefunc-react-router/node_modules/.pnpm/@brillout+vite-plugin-server-entry@0.7.15/node_modules/@brillout/vite-plugin-server-entry/dist/esm/utils/findRollupBundleEntry.js:44:9)
    at findServerEntry (file:///home/rom/tmp/telefunc-react-router/node_modules/.pnpm/@brillout+vite-plugin-server-entry@0.7.15/node_modules/@brillout/vite-plugin-server-entry/dist/esm/plugin/index.js:341:9)
    at Object.handler (file:///home/rom/tmp/telefunc-react-router/node_modules/.pnpm/@brillout+vite-plugin-server-entry@0.7.15/node_modules/@brillout/vite-plugin-server-entry/dist/esm/plugin/index.js:130:39)
    at Object.handler (file:///home/rom/tmp/telefunc-react-router/node_modules/.pnpm/vite@7.1.5_@types+node@20.19.16_jiti@2.5.1_lightningcss@1.30.1_yaml@2.8.1/node_modules/vite/dist/node/chunks/dep-M_KD0XSK.js:34452:13)
    at file:///home/rom/tmp/telefunc-react-router/node_modules/.pnpm/rollup@4.50.2/node_modules/rollup/dist/es/shared/node-entry.js:22428:40 {
  code: 'PLUGIN_ERROR',
  plugin: '@brillout/vite-plugin-server-entry:telefunc:hooks',
  hook: 'generateBundle'
}
 ELIFECYCLE  Command failed with exit code 1.