Vercel build fails with write EPIPE in Miniflare (void:prerender plugin)

[miantiao-me]

I'm migrating my blog to use void SSG. The site successfully deploys on Void, Netlify and Cloudflare, but the build fails on Vercel.

Failure symptoms:

• Vercel build fails during the production build step with an uncaught write EPIPE originating from miniflare when the void:prerender plugin runs (hook: closeBundle).
• Error excerpt from the Vercel build log:

error during build:
Error: write EPIPE
 at afterWriteDispatched (node:internal/stream_base_commons:159:15)
 at writeGeneric (node:internal/stream_base_commons:150:3)
 at Socket._writeGeneric (node:net:966:11)
 at Socket._write (node:net:978:8)
 at writeOrBuffer (node:internal/streams/writable:572:12)
 at _write (node:internal/streams/writable:501:10)
 at Writable.write (node:internal/streams/writable:510:10)
 at Runtime.updateConfig (/vercel/path0/node_modules/.pnpm/miniflare@4.20260611.0/node_modules/miniflare/dist/src/index.js:71685:26)
 at async #assembleAndUpdateConfig (/vercel/path0/node_modules/.pnpm/miniflare@4.20260611.0/node_modules/miniflare/dist/src/index.js:91445:30)
 at async Mutex.runWith (/vercel/path0/node_modules/.pnpm/miniflare@4.20260611.0/node_modules/miniflare/dist/src/index.js:59980:48) {
 errno: -32,
 code: 'PLUGIN_ERROR',
 syscall: 'write',
 pluginCode: 'EPIPE',
 plugin: 'void:prerender',
 hook: 'closeBundle'
}

Additional context from the log:

• Build runs "pnpm run build" which executes velite, vp build and a tsx assets build script.
• Vite builds both the worker (ssr) and the client bundles successfully before the error occurs during a plugin closeBundle step.
• There is also a warning about ignored build scripts and Corepack downloading pnpm, but the primary failure appears to be the write EPIPE in Miniflare.

What I tried / questions:

• I haven't modified Miniflare configuration intentionally; it's used by the Void prerender plugin.
• Are there known Vercel environment limits or stdout/stderr buffering issues that could cause Miniflare to fail with EPIPE during closeBundle?
• Any suggestions for debugging or configuration changes to avoid this error on Vercel (e.g., disabling prerender during build, adjusting miniflare usage, or environment variables)?

Please let me know what additional logs or environment info you'd like and how I can help reproduce. Thank you!