Add JSDoc annotations to public API

packages/react-router/src/Matches.tsx

@@ -123,6 +123,18 @@ export type UseMatchRouteOptions<
   MaskOptions<TRouter, TMaskFrom, TMaskTo> &
   MatchRouteOptions
 
+/**
+ * Create a matcher function for testing locations against route definitions.
+ *
+ * The returned function accepts standard navigation options (`to`, `params`,
+ * `search`, etc.) and returns either `false` (no match) or the matched params
+ * object when the route matches the current or pending location.
+ *
+ * Useful for conditional rendering and active UI states.
+ *
+ * @returns A `matchRoute(options)` function that returns `false` or params.
+ * @link https://tanstack.com/router/latest/docs/framework/react/api/router/useMatchRouteHook
+ */
 export function useMatchRoute<TRouter extends AnyRouter = RegisteredRouter>() {
   const router = useRouter()
 
@@ -231,6 +243,15 @@ export function useMatches<
   } as any) as UseMatchesResult<TRouter, TSelected>
 }
 
+/**
+ * Read the full array of active route matches or select a derived subset.
+ *
+ * Useful for debugging, breadcrumbs, or aggregating metadata across matches.
+ *
+ * @returns The array of matches (or the selected value).
+ * @link https://tanstack.com/router/latest/docs/framework/react/api/router/useMatchesHook
+ */
+
 /**
  * Read the full array of active route matches or select a derived subset.
  *

packages/react-router/src/useNavigate.tsx

@@ -8,6 +8,20 @@ import type {
   UseNavigateResult,
 } from '@tanstack/router-core'
 
+/**
+ * Imperative navigation hook.
+ *
+ * Returns a stable `navigate(options)` function to change the current location
+ * programmatically. Prefer the `Link` component for user-initiated navigation,
+ * and use this hook from effects, callbacks, or handlers where imperative
+ * navigation is required.
+ *
+ * Options:
+ * - `from`: Optional route base used to resolve relative `to` paths.
+ *
+ * @returns A function that accepts `NavigateOptions`.
+ * @link https://tanstack.com/router/latest/docs/framework/react/api/router/useNavigateHook
+ */
 export function useNavigate<
   TRouter extends AnyRouter = RegisteredRouter,
   TDefaultFrom extends string = string,