Web / TanStack Interview Questions
How do the TanStack libraries compose into a full application stack, and what is TanStack Start?
Each library is independently useful, but together they form a coherent, type-safe, headless application stack — no additional state management or routing library required.
| Layer | Library | Responsibility |
|---|---|---|
| Routing | TanStack Router | Type-safe navigation, search params, loaders |
| Server state | TanStack Query | Fetching, caching, mutations, background sync |
| Form state | TanStack Form | Form lifecycle, validation, field arrays |
| Table / data UI | TanStack Table | Sorting, filtering, pagination, selection |
| Large lists | TanStack Virtual | Render only visible rows/columns |
// Typical page: Router search params â Query key â Table state <script setup lang="ts"> import { computed } from "vue" import { useSearch, useNavigate } from "@tanstack/vue-router" import { useQuery } from "@tanstack/vue-query" import { useVueTable, getCoreRowModel, createColumnHelper } from "@tanstack/vue-table" // 1. URL state via Router const search=useSearch({ from:"/users" }) // 2. Server data via Query (key mirrors URL state) const { data }=useQuery({ queryKey: computed(()=>["users",{page:search.page,q:search.q}]), queryFn: ()=>fetchUsers({page:search.page,q:search.q}), }) // 3. Table UI logic via Table const ch=createColumnHelper<User>() const table=useVueTable({ get data(){ return data.value?.users??[] }, columns:[ch.accessor("name",{header:"Name"})], manualPagination:true, getCoreRowModel:getCoreRowModel(), }) </script> // TanStack Start (2024-2025): // Full-stack framework built on TanStack Router adding SSR, // server functions, streaming, and file-based routing. // Stable for React; Vue support in progress.
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