Routing broken for preview with react-router-dom in 4.0.0-alpha.2

[fc]

Describe the bug

When going to /some/route/somewhere using react-router-dom with preview the query path is not passed to the route leading to a 404 error.
In local dev it works fine.

git bisect indicates this PR is the cause:
#10475

Reproduction

https://stackblitz.com/edit/vitejs-vite-f9vj36?file=package.json,src%2FApp.jsx,vite.config.js&terminal=build,preview

Steps to reproduce

note: the StackBlitz link will run a build then run preview from the terminal query param. In dev the problem does not appear to happen.

Go to /test/about in the StackBlitz repro:

System Info

n/a

Used Package Manager

yarn

Logs

No response

Validations

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• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
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• The provided reproduction is a minimal reproducible example of the bug.

[fc]

Some notes:

• this block looks like the cause
• when config.appType === 'spa' is true then then the single option of sirv is enabled. Docs - "When true, the directory's index page (default index.html) will be sent if the request asset does not exist."
• so, I think we would want to mimic the behavior of sirv for spa apps and to fallback to routing to index.html when shouldServe is false.

[ElMassimo]

Testing Vite 4 with îles.

An unintended effect of #10475 is that sirv will only receive requests to /existing if there's an existing/index.html file, while prior to the change sirv was able to resolve /existing to a existing.html file.

This is important to be able to locally preview sites that will be deployed using cleanUrls in Vercel, or in Netlify.

Ideally, frameworks like îles should be able to override shouldServe, as it limits the usefulness of the preview command.

[mickdewald]

I can confirm this error in vite 4.0.0 (stable) as well.
In dev everything works fine, but as soon as I run yarn preview refreshing a nested route it breaks, e.g.
http://localhost:3000/user
but navigating from http://localhost:3000/ to http://localhost:3000/user via link works fine

[mzaien]

• of sirv is enabl

I can confirm this too, everything works fine with v3

I tried to run the build folder with server and it works correctly

[gbyesiltas]

I have the same issue on a Vue 3 project

[mickdewald]

I just installed v4.0.1 and my problem has been solved.
Awesome job guys and thank you!

I can confirm this error in vite 4.0.0 (stable) as well. In dev everything works fine, but as soon as I run yarn preview refreshing a nested route it breaks, e.g. http://localhost:3000/user but navigating from http://localhost:3000/ to http://localhost:3000/user via link works fine