TanStack Router adds 29KB instead of 12KB to the bundle

[fabian-hiller]

Which project does this relate to?

Router

Describe the bug

I created a Vite + SolidJS + TanStack Router app and was expecting 12KB for an almost empty web app but it added 29KB to it. Is this a bug or did the TanStack Router bundle increase by more than 100% over the last months? If that is the cases it is probably no longer "Lightweight".

Website:

Vite + SolidJS:

 vite v8.0.3 building client environment for production...
✓ 12 modules transformed.
computing gzip size...
dist/index.html                  0.46 kB │ gzip: 0.29 kB
dist/assets/vite-BF8QNONU.svg    8.70 kB │ gzip: 1.60 kB
dist/assets/hero-5sT3BiRD.png   44.91 kB
dist/assets/index-DykytF2W.css   4.10 kB │ gzip: 1.47 kB
dist/assets/index-DbBVHp2z.js   16.04 kB │ gzip: 6.09 kB

✓ built in 580ms

Vite + SolidJS + TanStack Router:

vite v8.0.3 building client environment for production...
✓ 92 modules transformed.
computing gzip size...
dist/index.html                   0.45 kB │ gzip:  0.28 kB
dist/assets/index-9lpGihRV.css   11.90 kB │ gzip:  3.27 kB
dist/assets/about-CPZOf6_P.js     0.59 kB │ gzip:  0.40 kB
dist/assets/routes-CZaK90oP.js    2.83 kB │ gzip:  1.37 kB
dist/assets/index-Ds7sFwGP.js   107.91 kB │ gzip: 35.35 kB

✓ built in 542ms

Your Example Website or App

https://stackblitz.com/edit/vitejs-vite-wgefec7z

Steps to Reproduce the Bug or Issue

1. Use the StackBlitz link or npx @tanstack/cli create --router-only --framework solid
2. npm run build

Expected behavior

It should only add 12KB to the final bundle

Screenshots or Videos

No response

Platform

• Router Version: 1.168.9
• OS: macOS
• Bundler: Vite
• Bundler Version: 8.0.1

Additional context

No response

[tannerlinsley]

12kb might be slightly out of date, but 29 is also wayyy more than I think it should be. We’re looking into it b

[fabian-hiller]

Thanks Tanner! 🙏