npm i @tanstack/vue-start @tanstack/vue-router vue
npm i -D vite @vitejs/plugin-vue @vitejs/plugin-vue-jsx typescript

{
  "type": "module",
  "scripts": {
    "dev": "vite dev",
    "build": "vite build",
    "start": "node .output/server/index.mjs"
  }
}

{
  "compilerOptions": {
    "jsx": "preserve",
    "jsxImportSource": "vue",
    "moduleResolution": "Bundler",
    "module": "ESNext",
    "target": "ES2022",
    "skipLibCheck": true,
    "strictNullChecks": true
  }
}

import { defineConfig } from 'vite'
import { tanstackStart } from '@tanstack/vue-start/plugin/vite'
import vuePlugin from '@vitejs/plugin-vue'
import vueJsx from '@vitejs/plugin-vue-jsx'

export default defineConfig({
  plugins: [
    tanstackStart(), // MUST come before vue plugin
    vuePlugin(),
    vueJsx(), // Required for JSX/TSX route files
  ],
})

import { createRouter } from '@tanstack/vue-router'
import { routeTree } from './routeTree.gen'

export function getRouter() {
  const router = createRouter({
    routeTree,
    scrollRestoration: true,
  })
  return router
}

import {
  Outlet,
  createRootRoute,
  HeadContent,
  Scripts,
  Html,
  Body,
} from '@tanstack/vue-router'

export const Route = createRootRoute({
  head: () => ({
    meta: [
      { charSet: 'utf-8' },
      { name: 'viewport', content: 'width=device-width, initial-scale=1' },
      { title: 'My TanStack Start App' },
    ],
  }),
  component: RootComponent,
})

function RootComponent() {
  return (
    <Html>
      <head>
        <HeadContent />
      </head>
      <Body>
        <Outlet />
        <Scripts />
      </Body>
    </Html>
  )
}

import { createFileRoute } from '@tanstack/vue-router'
import { createServerFn } from '@tanstack/vue-start'
import { defineComponent } from 'vue'

const getGreeting = createServerFn({ method: 'GET' }).handler(async () => {
  return 'Hello from TanStack Start!'
})

const HomePage = defineComponent({
  setup() {
    const greeting = Route.useLoaderData()
    return () => <h1>{greeting.value}</h1>
  },
})

export const Route = createFileRoute('/')({
  loader: () => getGreeting(),
  component: HomePage,
})

import { createServerFn, useServerFn } from '@tanstack/vue-start'
import { ref } from 'vue'

const updatePost = createServerFn({ method: 'POST' })
  .validator((data: { id: string; title: string }) => data)
  .handler(async ({ data }) => {
    await db.posts.update(data.id, { title: data.title })
    return { success: true }
  })

// In a component setup:
const updatePostFn = useServerFn(updatePost)
const title = ref('')

async function handleSubmit(postId: string) {
  await updatePostFn({ data: { id: postId, title: title.value } })
}

// WRONG — this is the SPA router, NOT Start
import { createServerFn } from '@tanstack/vue-router'

// CORRECT — server functions come from vue-start
import { createServerFn } from '@tanstack/vue-start'

// CORRECT — routing APIs come from vue-router
import { createFileRoute, Link } from '@tanstack/vue-router'

// WRONG
const data = Route.useLoaderData()
console.log(data.message) // undefined!

// CORRECT
const data = Route.useLoaderData()
console.log(data.value.message)

// WRONG
plugins: [vuePlugin(), tanstackStart()]

// CORRECT
plugins: [tanstackStart(), vuePlugin()]

// WRONG — plain HTML tags can cause hydration mismatches
function RootComponent() {
  return (
    <html>
      <body>
        <Outlet />
      </body>
    </html>
  )
}

// CORRECT — use Html and Body components
function RootComponent() {
  return (
    <Html>
      <head>
        <HeadContent />
      </head>
      <Body>
        <Outlet />
        <Scripts />
      </Body>
    </Html>
  )
}