Server Function using inputValidator within zod in co-locate file route is error

[khanhicetea]

Which project does this relate to?

Router

Describe the bug

Server Function using inputValidator within zod in co-locate file route is error

Your Example Website or App

https://github.com/khanhicetea/react-tantan/blob/main/src/routes/(authenticated)/manage/users2.tsx#L26

Steps to Reproduce the Bug or Issue

I put co-locate server function using zod in same-file within Route

import * as z from "zod";

export const $ping = createServerFn()
  .inputValidator(z.string())
  .handler(async (data) => {
    return `pong ${data}`;
  });

Route calling function

<Button
          onClick={() => {
            $ping({ data: "Khanh" }).then(console.log);
          }}
        >
          Ping
        </Button>

Vite.config.ts (I use Nitro v3 vite plugin)

import { nitro } from "nitro/vite";


nitro({
      config: {
        preset: "node-server",
        compressPublicAssets: { gzip: true, brotli: true },
      },
    })

this is error log

serverFnInfo {
  functionName: '$ping_createServerFn_handler',
  importer: [Function: importer]
}
Error: Server function module export not resolved for serverFn ID: src_routes_authenticated_manage_users2_tsx--_ping_createServerFn_handler
    at getServerFnById (/Users/khanhicetea/dev/labs/tantan/node_modules/.pnpm/@tanstack+start-server-core@1.132.48_crossws@0.4.1_srvx@0.8.14_/node_modules/@tanstack/start-server-core/dist/esm/getServerFnById.js:28:11)
    ... 8 lines matching cause stack trace ...
    at EnvRunner.fetch (file:///Users/khanhicetea/dev/labs/tantan/node_modules/.pnpm/nitro-nightly@3.0.0-20251007-155759-75b985fb_drizzle-orm@0.44.6_kysely@0.28.7_postgres@_7c970ac4176dd4549bf69e791b257f78/node_modules/nitro-nightly/dist/runtime/internal/vite/dev-worker.mjs:77:14) {
  cause: Error: Server function module export not resolved for serverFn ID: src_routes_authenticated_manage_users2_tsx--_ping_createServerFn_handler
      at getServerFnById (/Users/khanhicetea/dev/labs/tantan/node_modules/.pnpm/@tanstack+start-server-core@1.132.48_crossws@0.4.1_srvx@0.8.14_/node_modules/@tanstack/start-server-core/dist/esm/getServerFnById.js:28:11)
      at handleServerAction (/Users/khanhicetea/dev/labs/tantan/node_modules/.pnpm/@tanstack+start-server-core@1.132.48_crossws@0.4.1_srvx@0.8.14_/node_modules/@tanstack/start-server-core/dist/esm/server-functions-handler.js:50:18)
      at /Users/khanhicetea/dev/labs/tantan/node_modules/.pnpm/@tanstack+start-server-core@1.132.48_crossws@0.4.1_srvx@0.8.14_/node_modules/@tanstack/start-server-core/dist/esm/createStartHandler.js:179:24
      at /Users/khanhicetea/dev/labs/tantan/node_modules/.pnpm/@tanstack+start-server-core@1.132.48_crossws@0.4.1_srvx@0.8.14_/node_modules/@tanstack/start-server-core/dist/esm/createStartHandler.js:168:26
      at /Users/khanhicetea/dev/labs/tantan/node_modules/.pnpm/@tanstack+start-server-core@1.132.48_crossws@0.4.1_srvx@0.8.14_/node_modules/@tanstack/start-server-core/dist/esm/createStartHandler.js:462:22
      at next (/Users/khanhicetea/dev/labs/tantan/node_modules/.pnpm/@tanstack+start-server-core@1.132.48_crossws@0.4.1_srvx@0.8.14_/node_modules/@tanstack/start-server-core/dist/esm/createStartHandler.js:480:16)
      at startRequestResolver (/Users/khanhicetea/dev/labs/tantan/node_modules/.pnpm/@tanstack+start-server-core@1.132.48_crossws@0.4.1_srvx@0.8.14_/node_modules/@tanstack/start-server-core/dist/esm/createStartHandler.js:267:17)
      at EnvRunner.fetch (file:///Users/khanhicetea/dev/labs/tantan/node_modules/.pnpm/nitro-nightly@3.0.0-20251007-155759-75b985fb_drizzle-orm@0.44.6_kysely@0.28.7_postgres@_7c970ac4176dd4549bf69e791b257f78/node_modules/nitro-nightly/dist/runtime/internal/vite/dev-worker.mjs:77:14)
      at fetchHandler (/Users/khanhicetea/dev/labs/tantan/node_modules/.pnpm/nitro-nightly@3.0.0-20251007-155759-75b985fb_drizzle-orm@0.44.6_kysely@0.28.7_postgres@_7c970ac4176dd4549bf69e791b257f78/node_modules/nitro-nightly/dist/runtime/internal/app.mjs:53:22)
      at EnvRunner.fetch (file:///Users/khanhicetea/dev/labs/tantan/node_modules/.pnpm/nitro-nightly@3.0.0-20251007-155759-75b985fb_drizzle-orm@0.44.6_kysely@0.28.7_postgres@_7c970ac4176dd4549bf69e791b257f78/node_modules/nitro-nightly/dist/runtime/internal/vite/dev-worker.mjs:77:14),
  status: 500,
  statusText: undefined,
  headers: undefined,
  data: undefined,
  body: undefined,
  unhandled: true
}
fnModule [Object: null prototype] [Module] {
  Route: [Getter],
  '$ping': [Getter]
}

Expected behavior

Should work

BTW : when building and run in production , the error is gone , and separate server functions into separate file works to

Screenshots or Videos

No response

Platform

• Router / Start Version: 1.132.47
• OS: macOS
• Bundler: Vite
• Bundler Version: 7.0.0

Additional context

No response