relative import of a `.js` file fails inside handlers

Environment

node: v18.18.0
nitropack: "2.9.6"
"express": "^4.19.2"

export default defineNitroConfig({
  srcDir: 'server',
  handlers: [
    {
      route: '/api',
      middleware: true,
      handler: './subsystem/index.ts',
    },
  ],
});

Reproduction

https://stackblitz.com/edit/github-zqsihv?file=subsystem%2Froutes%2Fone.js

1. have the defined subsystem/index.ts import a .js relatively

…
import oneRoute from './routes/one.js';
…

3. run dev
4. error message: \

[worker reload] Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/subsystem/routes/one.js' imported from /home/projects/yqniqmbba.github/.nitro/dev/index.mjs

Describe the bug

it looks like the module is resolved from the filesystem root when a relative import of a .js file is encountered. index.mjs contains file paths with too many ../. I expect them to be resolved correctly, like .ts files.

https://github.com/nuxt/nuxt/issues/26150

Additional context

either removing srcDir or changing one.js to one.ts fixes the issue in the minimal example. only dev mode is affected, using build && preview, it runs fine.

Logs

No response

Start with the minimal StackBlitz reproduction and the generated .nitro/dev/index.mjs, using server/subsystem/index.ts and subsystem/routes/one.js as the import path. Run dev with srcDir set to server and compare the generated relative paths for .js and .ts imports. Done means the .js handler import resolves correctly in dev mode without changing the source extension; build and preview already work.