File-Based vs Code-Based Routing in TanStack Router: Which Is Actually Easier?

Mar 15, 2026

I spent three hours trying to set up TanStack Router’s file-based routing, only to realize I picked the wrong approach for my project size.

The Problem: Why TanStack Router Feels Complicated

I was migrating from React Router to TanStack Router and assumed file-based routing was the “modern” way to go. After all, it’s prominently featured in the documentation. But here’s what I ran into:

Error: Could not find route tree generator
    at createRouteTree (router-core.js:234)
    at buildRouteTree (vite-plugin.js:89)

The Vite plugin wasn’t generating my routes correctly. I had mismatched file naming conventions, forgot to configure the plugin properly, and spent way too much time debugging build-time transformations.

Then I found this comment on Reddit:

“Are you using file based or code based routing? For me, code based routing was a breeze to setup” — hyperaeolian (score 13)

Wait, there’s another option?

The Solution: Choose the Right Routing Approach

Turns out, TanStack Router offers two completely different routing paradigms:

Approach	Best For	Setup Complexity	Scaling
Code-based	Small to medium projects	Low	Manual
File-based	Large projects (50+ routes)	High	Automatic

Code-Based Routing: The Easier Path

Here’s what code-based routing looks like:

import {
  createRouter,
  createRoute,
  createRootRoute,
} from '@tanstack/react-router'
import { RootLayout } from './components/RootLayout'
import { Home } from './pages/Home'
import { About } from './pages/About'
import { Users } from './pages/Users'

// Define routes explicitly
const rootRoute = createRootRoute({
  component: RootLayout,
})

const indexRoute = createRoute({
  getParentRoute: () => rootRoute,
  path: '/',
  component: Home,
})

const aboutRoute = createRoute({
  getParentRoute: () => rootRoute,
  path: '/about',
  component: About,
})

const usersRoute = createRoute({
  getParentRoute: () => rootRoute,
  path: '/users',
  component: Users,
})

// Build the tree
const routeTree = rootRoute.addChildren([
  indexRoute,
  aboutRoute,
  usersRoute,
])

// Create router
const router = createRouter({ routeTree })

export default router

No Vite plugin. No build-time magic. Just explicit route definitions that I can inspect and debug directly.

Switching to this approach took me 15 minutes. I had my app running immediately.

File-Based Routing: Better at Scale

File-based routing isn’t bad—it’s just designed for different use cases:

src/
  routes/
    __root.tsx          # Root layout
    index.tsx           # -> /
    about.tsx           # -> /about
    users/
      index.tsx         # -> /users
      $id.tsx           # -> /users/:id (dynamic)
      profile.tsx       # -> /users/profile

Each file becomes a route automatically. But this requires:

import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
import { TanStackRouterVite } from '@tanstack/router-vite-plugin'

export default defineConfig({
  plugins: [
    TanStackRouterVite(),  // Must be before React plugin
    react(),
  ],
})

And understanding conventions like:

$param for dynamic segments
_layout for layout routes (invisible in URL)
- prefix for unauthenticated routes

Why This Matters: Trade-offs Between Approaches

I made the classic mistake: assuming the “modern” default was right for my use case.

                    Project Size?
                         │
         ┌───────────────┼───────────────┐
         │               │               │
      Small          Medium           Large
     (<10 routes)  (10-30 routes)  (50+ routes)
         │               │               │
         v               v               v
    Code-based    Code-based      File-based
       Easy          Easy           Complex
       Manual        Manual         Automatic
       Setup         Setup          Discovery

The Unfair Comparison

As another Reddit commenter pointed out:

“Many users compare TanStack Router’s file-based routing to React Router’s standard routing, when the fair comparison would be to React Router’s framework mode.” — Dethstroke54

React Router’s framework mode also uses file-based conventions. It’s not that TanStack Router is more complex—it’s that file-based routing inherently requires more setup.

Common Mistakes: What I Got Wrong

Assuming file-based is always “modern”: File-based routing optimizes for large-scale DX, not setup speed.
Not reading the routing docs carefully: I skipped to the file-based section because it came first in the docs. Code-based routing was buried in the “Guides” section.
Ignoring project size: I was building a simple portfolio site with 5 routes. File-based routing was overkill.
Comparing across frameworks unfairly: I compared TanStack file-based to React Router code-based. That’s apples to oranges.

When to Actually Use File-Based Routing

File-based routing shines when you have:

50+ routes in a single application
Multiple developers needing route discoverability
Nested layouts that benefit from file co-location
A need for automatic type generation

As one developer noted:

“I prefer file-based routing for simplicity in my custom mdx framework—create a file and get a route.” — Xacius

That “create a file, get a route” experience is powerful for content-heavy applications.

Migration Path

The good news: you can start with code-based and migrate to file-based later.

Phase 1: Code-based (Week 1)
  - Quick setup
  - Learn TanStack Router concepts
  - Ship features fast

Phase 2: Evaluate (Month 2-3)
  - Count your routes
  - Assess team pain points
  - Consider file-based if >30 routes

Phase 3: File-based (Optional)
  - Migrate incrementally
  - One route file at a time
  - Test thoroughly

Bottom Line

If you’re struggling with TanStack Router setup, switch to code-based routing. It’s explicitly designed to be simple:

No plugins required
No build-time magic
Direct control over your route tree
Easy debugging with standard tools

You can always adopt file-based routing later when your application actually needs it.

Final Words + More Resources

My intention with this article was to help others share my knowledge and experience. If you want to contact me, you can contact by email: Email me

Here are also the most important links from this article along with some further resources that will help you in this scope:

👨‍💻 Reddit Discussion on TanStack Router Difficulty
👨‍💻 TanStack Router Documentation
👨‍💻 TanStack Router Code-Based Routing Guide

Oh, and if you found these resources useful, don’t forget to support me by starring the repo on GitHub!