Start: Tanstack Start + Code Based Routing not working

[gabenddos]

Which project does this relate to?

Start

Describe the bug

I'm trying to setup code based routing with tanstack start but I always fallback in two errors:
"Crawling result not available" or "Could not load tanstack-start-manifest:v".

Here is the stackblitz of a minimal tanstack start CLI + code based routing
https://stackblitz.com/~/github.com/gabenddos/tanstack-start-code-based-router?file=vite.config.ts

Github Public Repo:
https://github.com/gabenddos/tanstack-start-code-based-router/

During the cli I'm enabled tailwind, biomejs, compiler, query, form and table, shadcn.

1. Could not load tanstack-start-manifest:v:
   The project runs for dev but won't build. I already tried to run with and without nitro, and everytime the client passes but the server build instantly crashes.

error during build:
[tanstack-start:start-manifest-plugin] Could not load tanstack-start-manifest:v (imported by node_modules/.pnpm/@tanstack+start-server-core@1.134.20/node_modules/@tanstack/start-server-core/dist/esm/router-manifest.js): Cannot read properties of undefined (reading 'routes')
    at Object.handler (file:///Users/gaben/Development/code-based-tanstack-start/node_modules/.pnpm/@tanstack+start-plugin-core@1.135.0_@tanstack+react-router@1.135.0_react-dom@19.2.0_rea_c62dc329acdd0f709ac914e0d3f16db7/node_modules/@tanstack/start-plugin-core/dist/esm/start-manifest-plugin/plugin.js:74:66)
    at Object.handler (file:///Users/gaben/Development/code-based-tanstack-start/node_modules/.pnpm/vite@7.2.2_@types+node@22.19.0_jiti@2.6.1_lightningcss@1.30.2_tsx@4.20.6/node_modules/vite/dist/node/chunks/config.js:34337:13)
    at file:///Users/gaben/Development/code-based-tanstack-start/node_modules/.pnpm/rollup@4.53.2/node_modules/rollup/dist/es/shared/node-entry.js:22437:40
    at async PluginDriver.hookFirstAndGetPlugin (file:///Users/gaben/Development/code-based-tanstack-start/node_modules/.pnpm/rollup@4.53.2/node_modules/rollup/dist/es/shared/node-entry.js:22319:28)
    at async file:///Users/gaben/Development/code-based-tanstack-start/node_modules/.pnpm/rollup@4.53.2/node_modules/rollup/dist/es/shared/node-entry.js:21319:33
    at async Queue.work (file:///Users/gaben/Development/code-based-tanstack-start/node_modules/.pnpm/rollup@4.53.2/node_modules/rollup/dist/es/shared/node-entry.js:22547:32)
 ELIFECYCLE  Command failed with exit code 1.

2. Crawling result not available:
   Don't build and also runs on dev you can se the page being rendered behind the error overlay (same error as build).

2:03:13 PM [vite] (client) Pre-transform error: Crawling result not available
2:03:13 PM [vite] Internal server error: Crawling result not available
      at LoadPluginContext.handler (file:///Users/gaben/Development/code-based-tanstack-start/node_modules/.pnpm/@tanstack+start-plugin-core@1.135.0_@tanstack+react-router@1.135.0_react-dom@19.2.0_rea_c62dc329acdd0f709ac914e0d3f16db7/node_modules/@tanstack/start-plugin-core/dist/esm/start-router-plugin/plugin.js:140:17)
      at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
      at async EnvironmentPluginContainer.load (file:///Users/gaben/Development/code-based-tanstack-start/node_modules/.pnpm/vite@7.2.2_@types+node@22.19.0_jiti@2.6.1_lightningcss@1.30.2_tsx@4.20.6/node_modules/vite/dist/node/chunks/config.js:29378:19)
      at async loadAndTransform (file:///Users/gaben/Development/code-based-tanstack-start/node_modules/.pnpm/vite@7.2.2_@types+node@22.19.0_jiti@2.6.1_lightningcss@1.30.2_tsx@4.20.6/node_modules/vite/dist/node/chunks/config.js:23245:21)
      at async viteTransformMiddleware (file:///Users/gaben/Development/code-based-tanstack-start/node_modules/.pnpm/vite@7.2.2_@types+node@22.19.0_jiti@2.6.1_lightningcss@1.30.2_tsx@4.20.6/node_modules/vite/dist/node/chunks/config.js:25159:20)

Your Example Website or App

https://stackblitz.com/~/github.com/gabenddos/tanstack-start-code-based-router?file=vite.config.ts

Steps to Reproduce the Bug or Issue

1. Create a basic tanstack start app via CLI
2. Manually code your routeTree.ts following the tanstack router official docs.

import { RootRoute } from "./routes/__root";
import { homeRoute } from "./routes/home-route";

export const routeTree = RootRoute.addChildren([homeRoute]);

4. Add a dummy / route for tests e.g. home-route
5. In vite.config.ts config on the plugin inicialization, add this config on the tanstackStart plugin:

 tanstackStart({
      router: {
        enableRouteGeneration: false,
        generatedRouteTree: "./routeTree.ts",
      }
    }),

Expected behavior

The project should be able to build

Screenshots or Videos

No response

Platform

• Router / Start Version: ^1.132.0
• OS: macOS
• Browser: Chrome
• Browser Version: 142.0.7444.60
• Bundler: Vite
• Bundler Version: ^7.1.7

Additional context

I have a more complex turbo repo that this problem of build was hapening (I though it was related to the turbo setup) but then when I used the CLI to create a new one from scratch and just by changing from file to code based routing it start to give the same error I realized it would be something related with the code base routing implementation.

I'm two full days deep into this already, please help, I really want to implement this architecture that I've been building in the last week for the company I work for. I think tanstack start is a must for the future of react, NextJS just sucks.

[julen]

Start + code-based routing is not supported at the moment, cf. #5599.

[schiller-manuel]

yep, code based routing is not supported. does file based routing not work for you?