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 → Query key → 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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