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How do you use URL search params as typed state in TanStack Router?

Declare a validateSearch schema on the route. Search params become typed, validated, URL-persistent state — perfect for filters, sort order, and pagination that must survive refresh and be shareable via URL.

import { createRoute } from "@tanstack/vue-router"
import { z }           from "zod"

export const postsRoute = createRoute({
  getParentRoute: ()=>rootRoute,
  path:           "/posts",
  component:      PostsPage,
  validateSearch: z.object({
    page:   z.number().int().positive().default(1),
    status: z.enum(["all","published","draft"]).default("all"),
    q:      z.string().optional(),
  }).parse,
})

// In the component
import { useSearch, useNavigate } from "@tanstack/vue-router"
const search   = useSearch({ from:"/posts" })
// Typed: { page:number, status:"all"|"published"|"draft", q?:string }
const navigate = useNavigate()

function setPage(n:number){
  navigate({ to:"/posts", search: prev=>({...prev, page:n}) })
}

Main advantage of storing filter/pagination state in URL search params?
What does passing a function to the 'search' option in navigate() do?

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