Current TanStack Start template fails with `vite-tsconfig-paths@^6.0.2`, works with `^5.1.4`

[uttk]

Which project does this relate to?

Create Tanstack App

Describe the bug

When scaffolding a new project with pnpm create @tanstack/start@latest, the generated app installs vite-tsconfig-paths@^6.0.2 by default, but using the project results in an error.

If I downgrade vite-tsconfig-paths to ^5.1.4, the issue disappears and the project works as expected.

Your Example Website or App

N/A

Steps to Reproduce the Bug or Issue

1. Create a new app:

• pnpm create @tanstack/start@latest my-app

2. cd my-app
3. Install dependencies:

• pnpm install

4. Run the command that triggers the error (e.g. pnpm dev / pnpm build / pnpm preview):

• pnpm run dev

5. Observe the error (see “Describe the bug”)

Expected behavior

The import alias is resolved correctly without any errors occurring.

Screenshots or Videos

No response

Platform

• OS: macOS
• Browser: Chrome
• Version: 143.0.7499.170

Additional context

No response

[jherr]

I'm not seeing this. What operating system are you on?

[uttk]

@jherr

Sorry, I provided the incorrect reproduction steps. Here are the correct ones:

1.pnpm create @tanstack/start@latest
2. What would you like to name your project? --> Type project name ( e.g. "my-app" )
3. Would you like to use Tailwind CSS? --> Yes
4. Select toolchain --> Biome
5. Select deployment adapter --> Cloudflare
6. What add-ons would you like for your project? --> Only select「 Drizzle 」
7. Would you like any examples? --> Select nothing, Enter.
8. Drizzle: Database Provider --> PostgreSQL
9. cd my-app && pnpm dev
10. Observe the error ( see “Error message” )

Error message

(!) Failed to run dependency scan. Skipping dependency pre-bundling. Error: The following dependencies are imported but could not be resolved:

  @/data/demo.punk-songs (imported by /Users/uttk/Documents/playgrounds/my-app/src/routes/demo/start.ssr.spa-mode.tsx)
  @/db (imported by /Users/uttk/Documents/playgrounds/my-app/src/routes/demo/drizzle.tsx)
  @/db/schema (imported by /Users/uttk/Documents/playgrounds/my-app/src/routes/demo/drizzle.tsx)

Are they installed?
    at file:///Users/uttk/Documents/playgrounds/my-app/node_modules/.pnpm/vite@7.3.0_@types+node@22.19.3_jiti@2.6.1_lightningcss@1.30.2_tsx@4.21.0/node_modules/vite/dist/node/chunks/config.js:31902:33
    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
    at async file:///Users/uttk/Documents/playgrounds/my-app/node_modules/.pnpm/vite@7.3.0_@types+node@22.19.3_jiti@2.6.1_lightningcss@1.30.2_tsx@4.21.0/node_modules/vite/dist/node/chunks/config.js:34110:15

Platform

OS: macOS
Browser: Chrome
Version: 143.0.7499.170
Node.js: v22.12.0

[jherr]

Ah, ok, that's quite a bit of missing context. Thank you. I'll get on fixing it.

[vkalahas]

I just submitted a PR that solves these issues since I had them also!

[vkalahas]

Solves Drizzle demo issues: #277
Solves path aliasing issues: #278