add nitro e2e suites

e2e/react-start/basic-nitro-spa/.gitignore

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+node_modules
+.DS_Store
+.cache
+.env
+dist
+.output
+.nitro
+
+/test-results/
+/playwright-report/
+/blob-report/
+/playwright/.cache/

e2e/react-start/basic-nitro-spa/package.json

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+{
+  "name": "tanstack-react-start-e2e-basic-nitro-spa",
+  "private": true,
+  "sideEffects": false,
+  "type": "module",
+  "scripts": {
+    "dev:v2": "vite dev -c vite.config.v2.ts --port 3000",
+    "dev:v3": "vite dev -c vite.config.v3.ts --port 3000",
+    "dev:e2e:v2": "vite dev -c vite.config.v2.ts",
+    "dev:e2e:v3": "vite dev -c vite.config.v3.ts",
+    "build:v2": "vite build -c vite.config.v2.ts && tsc --noEmit",
+    "build:v3": "vite build -c vite.config.v3.ts && tsc --noEmit",
+    "preview:v2": "vite preview -c vite.config.v2.ts",
+    "preview:v3": "vite preview -c vite.config.v3.ts",
+    "test:e2e:shared": "rm -rf port*.txt; playwright test --project=chromium",
+    "test:e2e:v2": "rm -rf .output dist .nitro && NITRO_VARIANT=v2 pnpm run test:e2e:shared",
+    "test:e2e:v3": "rm -rf .output dist .nitro && NITRO_VARIANT=v3 pnpm run test:e2e:shared",
+    "test:e2e": "pnpm run test:e2e:v2 && pnpm run test:e2e:v3"
+  },
+  "dependencies": {
+    "@tanstack/react-router": "workspace:^",
+    "@tanstack/react-router-devtools": "workspace:^",
+    "@tanstack/react-start": "workspace:^",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.50.1",
+    "@tailwindcss/postcss": "^4.1.15",
+    "@tanstack/router-e2e-utils": "workspace:^",
+    "@tanstack/nitro-v2-vite-plugin": "workspace:^",
+    "@types/node": "^22.10.2",
+    "@types/react": "^19.0.8",
+    "@types/react-dom": "^19.0.3",
+    "nitro": "npm:nitro-nightly@latest",
+    "postcss": "^8.5.1",
+    "tailwindcss": "^4.1.15",
+    "typescript": "^5.7.2",
+    "vite": "^7.1.7",
+    "vite-tsconfig-paths": "^5.1.4"
+  }
+}

e2e/react-start/basic-nitro-spa/playwright.config.ts

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+import { defineConfig, devices } from '@playwright/test'
+import { getTestServerPort } from '@tanstack/router-e2e-utils'
+import packageJson from './package.json' with { type: 'json' }
+
+const PORT = await getTestServerPort(packageJson.name)
+const baseURL = `http://localhost:${PORT}`
+const nitroVariant = process.env.NITRO_VARIANT
+if (nitroVariant !== 'v2' && nitroVariant !== 'v3') {
+  throw new Error('Set NITRO_VARIANT to "v2" or "v3" for Nitro e2e tests.')
+}
+const buildScript = nitroVariant === 'v2' ? 'build:v2' : 'build:v3'
+const buildCommand = `pnpm run ${buildScript}`
+
+/**
+ * See https://playwright.dev/docs/test-configuration.
+ */
+export default defineConfig({
+  testDir: './tests',
+  workers: 1,
+
+  reporter: [['line']],
+
+  use: {
+    /* Base URL to use in actions like `await page.goto('/')`. */
+    baseURL,
+  },
+
+  webServer: {
+    // Note: We run node directly instead of vite preview because Nitro's
+    // configurePreviewServer spawns on a random port. The prerendering during
+    // build uses vite.preview() correctly.
+    command: `${buildCommand} && PORT=${PORT} node .output/server/index.mjs`,
+    url: baseURL,
+    reuseExistingServer: !process.env.CI,
+    stdout: 'pipe',
+  },
+
+  projects: [
+    {
+      name: 'chromium',
+      use: { ...devices['Desktop Chrome'] },
+    },
+  ],
+})

e2e/react-start/basic-nitro-spa/postcss.config.mjs

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+export default {
+  plugins: {
+    '@tailwindcss/postcss': {},
+  },
+}

e2e/react-start/basic-nitro-spa/public/site.webmanifest

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+{
+  "name": "",
+  "short_name": "",
+  "icons": [
+    {
+      "src": "/android-chrome-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png"
+    },
+    {
+      "src": "/android-chrome-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    }
+  ],
+  "theme_color": "#ffffff",
+  "background_color": "#ffffff",
+  "display": "standalone"
+}

e2e/react-start/basic-nitro-spa/src/components/DefaultCatchBoundary.tsx

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+import {
+  ErrorComponent,
+  Link,
+  rootRouteId,
+  useMatch,
+  useRouter,
+} from '@tanstack/react-router'
+import type { ErrorComponentProps } from '@tanstack/react-router'
+
+export function DefaultCatchBoundary({ error }: ErrorComponentProps) {
+  const router = useRouter()
+  const isRoot = useMatch({
+    strict: false,
+    select: (state) => state.id === rootRouteId,
+  })
+
+  console.error(error)
+
+  return (
+    <div className="min-w-0 flex-1 p-4 flex flex-col items-center justify-center gap-6">
+      <ErrorComponent error={error} />
+      <div className="flex gap-2 items-center flex-wrap">
+        <button
+          onClick={() => {
+            router.invalidate()
+          }}
+          className={`px-2 py-1 bg-gray-600 dark:bg-gray-700 rounded-sm text-white uppercase font-extrabold`}
+        >
+          Try Again
+        </button>
+        {isRoot ? (
+          <Link
+            to="/"
+            className={`px-2 py-1 bg-gray-600 dark:bg-gray-700 rounded-sm text-white uppercase font-extrabold`}
+          >
+            Home
+          </Link>
+        ) : (
+          <Link
+            to="/"
+            className={`px-2 py-1 bg-gray-600 dark:bg-gray-700 rounded-sm text-white uppercase font-extrabold`}
+            onClick={(e) => {
+              e.preventDefault()
+              window.history.back()
+            }}
+          >
+            Go Back
+          </Link>
+        )}
+      </div>
+    </div>
+  )
+}

e2e/react-start/basic-nitro-spa/src/components/NotFound.tsx

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+import { Link } from '@tanstack/react-router'
+
+export function NotFound({ children }: { children?: any }) {
+  return (
+    <div className="space-y-2 p-2" data-testid="default-not-found-component">
+      <div className="text-gray-600 dark:text-gray-400">
+        {children || <p>The page you are looking for does not exist.</p>}
+      </div>
+      <p className="flex items-center gap-2 flex-wrap">
+        <button
+          onClick={() => window.history.back()}
+          className="bg-emerald-500 text-white px-2 py-1 rounded-sm uppercase font-black text-sm"
+        >
+          Go back
+        </button>
+        <Link
+          to="/"
+          className="bg-cyan-600 text-white px-2 py-1 rounded-sm uppercase font-black text-sm"
+        >
+          Start Over
+        </Link>
+      </p>
+    </div>
+  )
+}

e2e/react-start/basic-nitro-spa/src/routeTree.gen.ts

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+/* eslint-disable */
+
+// @ts-nocheck
+
+// noinspection JSUnusedGlobalSymbols
+
+// This file was automatically generated by TanStack Router.
+// You should NOT make any changes in this file as it will be overwritten.
+// Additionally, you should also exclude this file from your linter and/or formatter to prevent it from being checked or modified.
+
+import { Route as rootRouteImport } from './routes/__root'
+import { Route as StaticRouteImport } from './routes/static'
+import { Route as IndexRouteImport } from './routes/index'
+
+const StaticRoute = StaticRouteImport.update({
+  id: '/static',
+  path: '/static',
+  getParentRoute: () => rootRouteImport,
+} as any)
+const IndexRoute = IndexRouteImport.update({
+  id: '/',
+  path: '/',
+  getParentRoute: () => rootRouteImport,
+} as any)
+
+export interface FileRoutesByFullPath {
+  '/': typeof IndexRoute
+  '/static': typeof StaticRoute
+}
+export interface FileRoutesByTo {
+  '/': typeof IndexRoute
+  '/static': typeof StaticRoute
+}
+export interface FileRoutesById {
+  __root__: typeof rootRouteImport
+  '/': typeof IndexRoute
+  '/static': typeof StaticRoute
+}
+export interface FileRouteTypes {
+  fileRoutesByFullPath: FileRoutesByFullPath
+  fullPaths: '/' | '/static'
+  fileRoutesByTo: FileRoutesByTo
+  to: '/' | '/static'
+  id: '__root__' | '/' | '/static'
+  fileRoutesById: FileRoutesById
+}
+export interface RootRouteChildren {
+  IndexRoute: typeof IndexRoute
+  StaticRoute: typeof StaticRoute
+}
+
+declare module '@tanstack/react-router' {
+  interface FileRoutesByPath {
+    '/static': {
+      id: '/static'
+      path: '/static'
+      fullPath: '/static'
+      preLoaderRoute: typeof StaticRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+    '/': {
+      id: '/'
+      path: '/'
+      fullPath: '/'
+      preLoaderRoute: typeof IndexRouteImport
+      parentRoute: typeof rootRouteImport
+    }
+  }
+}
+
+const rootRouteChildren: RootRouteChildren = {
+  IndexRoute: IndexRoute,
+  StaticRoute: StaticRoute,
+}
+export const routeTree = rootRouteImport
+  ._addFileChildren(rootRouteChildren)
+  ._addFileTypes<FileRouteTypes>()
+
+import type { getRouter } from './router.tsx'
+import type { createStart } from '@tanstack/react-start'
+declare module '@tanstack/react-start' {
+  interface Register {
+    ssr: true
+    router: Awaited<ReturnType<typeof getRouter>>
+  }
+}

e2e/react-start/basic-nitro-spa/src/router.tsx

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+import { createRouter } from '@tanstack/react-router'
+import { routeTree } from './routeTree.gen'
+import { DefaultCatchBoundary } from './components/DefaultCatchBoundary'
+import { NotFound } from './components/NotFound'
+
+export function getRouter() {
+  const router = createRouter({
+    routeTree,
+    defaultPreload: 'intent',
+    defaultErrorComponent: DefaultCatchBoundary,
+    defaultNotFoundComponent: () => <NotFound />,
+    scrollRestoration: true,
+  })
+
+  return router
+}

e2e/react-start/basic-nitro-spa/src/routes/__root.tsx

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+/// <reference types="vite/client" />
+import {
+  HeadContent,
+  Link,
+  Scripts,
+  createRootRoute,
+} from '@tanstack/react-router'
+import { TanStackRouterDevtools } from '@tanstack/react-router-devtools'
+import * as React from 'react'
+import { DefaultCatchBoundary } from '~/components/DefaultCatchBoundary'
+import { NotFound } from '~/components/NotFound'
+import appCss from '~/styles/app.css?url'
+import { seo } from '~/utils/seo'
+
+export const Route = createRootRoute({
+  head: () => ({
+    meta: [
+      {
+        charSet: 'utf-8',
+      },
+      {
+        name: 'viewport',
+        content: 'width=device-width, initial-scale=1',
+      },
+      ...seo({
+        title: 'TanStack Start + Nitro E2E Test',
+        description: 'Testing nitro integration with TanStack Start',
+      }),
+    ],
+    links: [
+      { rel: 'stylesheet', href: appCss },
+      { rel: 'icon', href: '/favicon.ico' },
+    ],
+  }),
+  errorComponent: DefaultCatchBoundary,
+  notFoundComponent: () => <NotFound />,
+  shellComponent: RootDocument,
+})
+
+function RootDocument({ children }: { children: React.ReactNode }) {
+  return (
+    <html>
+      <head>
+        <HeadContent />
+      </head>
+      <body>
+        <div className="p-2 flex gap-2 text-lg">
+          <Link
+            to="/"
+            activeProps={{
+              className: 'font-bold',
+            }}
+            activeOptions={{ exact: true }}
+          >
+            Home
+          </Link>
+          <Link
+            to="/static"
+            activeProps={{
+              className: 'font-bold',
+            }}
+          >
+            Static
+          </Link>
+        </div>
+        <hr />
+        {children}
+        <TanStackRouterDevtools position="bottom-right" />
+        <Scripts />
+      </body>
+    </html>
+  )
+}