A beginner-friendly dashboard showcasing all major TanStack libraries working together in a real app.

🔗 Live Demo: https://example-react-brown.vercel.app

• useQuery to fetch todos with automatic caching
• useMutation for add / toggle / delete with optimistic updates (UI updates instantly, reverts on error)
• useForm with field-level validation (required field)
• @tanstack/store for global search state shared across components

• useQuery fetches all 100 posts once, cached for 10 minutes
• useReactTable with sorting (click headers), global filter, and pagination
• Toggle to Virtual List mode — useVirtualizer renders only visible rows in DOM (~5-10 rows), not all 100

• Sortable, filterable table of 10 users
• Click ✏️ to open edit dialog
• useForm inside dialog with per-field validation
• useMutation patches user with optimistic update

• Optimistic Updates — UI reflects changes immediately without waiting for API
• Cache Invalidation — mutations cancel in-flight queries and update cache directly
• SSR-safe hooks — useStore with explicit selectors, QueryClient created per-request on server
• Virtualization — 100 rows in DOM = ~10 elements vs 100 with normal rendering
• Headless UI — TanStack Table/Form/Virtual are logic-only, you own the markup

• TanStack Start (@tanstack/react-start) — SSR framework
• Vite + Nitro — bundler & server (Vercel preset)
• shadcn/ui — Radix UI + CVA components (Button, Card, Input, Badge, Dialog, Checkbox...)
• Tailwind CSS v4 — utility-first styling with @theme CSS variables
• Lucide React — icons
• JSONPlaceholder — free fake REST API (todos, posts, users)
• TypeScript throughout

src/
├── components/
│   └── ui/               # shadcn/ui components
│       ├── button.tsx
│       ├── card.tsx
│       ├── input.tsx
│       ├── badge.tsx
│       ├── checkbox.tsx
│       ├── dialog.tsx
│       ├── label.tsx
│       ├── select.tsx
│       └── separator.tsx
├── lib/
│   └── utils.ts          # cn() helper (clsx + tailwind-merge)
├── store/
│   └── index.ts          # @tanstack/store global state
├── routes/
│   ├── __root.tsx        # Root layout (QueryClientProvider, Header, Outlet)
│   ├── index.tsx         # Home dashboard
│   ├── todos.tsx         # Query + Form + Store demo
│   ├── posts.tsx         # Table + Virtual demo
│   └── users.tsx         # Table + Form + Mutation demo
├── styles/
│   └── app.css           # Tailwind v4 + shadcn CSS variables
├── router.tsx            # createRouter config
└── routeTree.gen.ts      # Route tree (manually maintained)

git clone https://github.com/truongnat/example-react
cd example-react
npm install
npm run dev

Open http://localhost:3000

Pre-configured for Vercel — just connect the repo on vercel.com, no extra settings needed.

Uses Nitro vercel preset which outputs to .vercel/output/ format automatically.

Note: JSONPlaceholder is a read-only fake API. Mutations (add/edit/delete) return correct responses but data resets on page reload.