Invalid _redirects configuration causes infinite loop when deploying to Cloudflare Workers

[Ankcorn]

What versions & operating system are you using?

Environment:

• macOS
• wrangler: ^4.43.0
• slidev (sli.dev)

Please provide a link to a minimal reproduction

https://github.com/Ankcorn/mcp-tips

Describe the Bug

Description:
When deploying a slidev presentation using wrangler deploy, the deployment fails with a Cloudflare API error indicating an infinite redirect loop in the _redirects file.

Root Cause:
The _redirects file generated by slidev contains an invalid rewrite rule:

/*    /index.html   200

I would expect the error message to tell me to delete this file or just handle deploying it

Please provide any relevant error logs

[ERROR] A request to the Cloudflare API (/accounts/92a369ba0c773e307fbf9b8814730c09/workers/scripts/mcp-tips/versions) failed.

Invalid _redirects configuration:
Line 1: Infinite loop detected in this rule. This would cause a redirect to strip .html or
/index and end up triggering this rule again. [code: 10021]

[petebacondarwin]

Labelled as api/internal as this check is done in the backend, not in Wrangler.