tanstack-router

@octanejs/tanstack-router

TanStack Router for the octane UI framework.

TanStack Router splits a framework-agnostic core (@tanstack/router-core — the router, route tree, matching, history, and the reactive store) from a thin React binding (@tanstack/react-router). Mirroring @octanejs/tanstack-query, this package re-exports the core verbatim and reimplements the framework binding on octane's hooks. The main runtime surface follows @tanstack/react-router, so most router code works by changing the import.

import {
  createRouter,
  createRootRoute,
  createRoute,
  RouterProvider,
  Outlet,
  Link,
  useParams,
} from '@octanejs/tanstack-router';
import { createRoot } from 'octane';

const rootRoute = createRootRoute({ component: RootLayout });
const indexRoute = createRoute({ getParentRoute: () => rootRoute, path: '/', component: Home });
const itemRoute = createRoute({ getParentRoute: () => rootRoute, path: 'item/$id', component: Item });

const router = createRouter({ routeTree: rootRoute.addChildren([indexRoute, itemRoute]) });

createRoot(document.getElementById('app')!).render(() => <RouterProvider router={router} />);

function RootLayout() @{
  <div>
    <Link to="/">{'Home'}</Link>
    <Outlet />
  </div>
}

function Item() @{
  const { id } = useParams({ strict: false });
  <h1>{('Item ' + id) as string}</h1>
}

The same code works in React-style .tsx too (className, return <jsx>, <Link>Home</Link>) — see tests/_fixtures/basic-react.tsx.

How it works

@tanstack/router-core keeps the router state in a reactive store. On the client, createRouter supplies the store factory (createAtom/batch from @tanstack/store — framework-agnostic), whose atoms expose .subscribe/.get. useStore binds those to octane's useSyncExternalStore, and every read hook (useRouterState, useLocation, useParams, …) is a selector over it. The match tree renders pull-based: RouterProvider renders the first match, and each route component's <Outlet/> looks up the next match via matchContext — so navigation re-renders only the matches that changed.

Scope

Included: createRouter, createRootRoute, createRoute, RouterProvider, Outlet, Link, Navigate, useRouter, useRouterState, useLocation, useParams, useSearch, useLoaderData, useMatches, useNavigate, ScrollRestoration, Await/useAwaited + defer (streaming deferred data), and lazyRouteComponent (lazy/code-split route components), and not-found rendering (notFoundComponent/defaultNotFoundComponent/notFoundMode — an unknown URL or a loader throwing notFound() renders the not-found UI inside the layout, per TanStack's fuzzy/root boundary rules), plus the full @tanstack/router-core re-export (redirect, notFound, history, search helpers, types). The typed route factories, route-bound hooks, and Link surface preserve TanStack Router's registered-route inference.

The 2026-07-06 gap-closure sweep (see docs/tanstack-parity-audit.md) additionally landed the full Match pipeline (per-route Suspense/CatchBoundary/CatchNotFound, pending/error/redirected/notFound statuses), router lifecycle events, useBlocker/ Block, the complete read-hook family (useMatch, useRouteContext, useLoaderDeps, useParentMatches/useChildMatches, …), getRouteApi/ createRouteMask, useMatchRoute/MatchRoute, ClientOnly, search-param validation/middleware, and full Link parity (preloading, masking, activeProps/inactiveProps) — differential-verified byte-equal against the real @tanstack/react-router.

File routing is supported through createFileRoute and createLazyFileRoute. @octanejs/tanstack-start consumes the exported @octanejs/tanstack-router/generator-plugin from its package-owned generator; the integration masks native .tsrx template bodies without changing source offsets, so generated route-tree edits preserve authored Octane route modules.

The @octanejs/tanstack-router/ssr/server and /ssr/client entries provide RouterServer, RouterClient, buffered rendering, and readable-stream rendering. Route-owned Html/Head/Body, HeadContent, Scripts, and ScriptOnce preserve full-document SSR, head assets, and hydration. Streaming uses Octane's native injection source, so the document begins with a doctype, renderer styles are placed inside <head> with the configured CSP nonce, and serialized router data can stream without a byte-level HTML transform. These entries are the router foundation used by @octanejs/tanstack-start.

// streaming a deferred loader value
<Await promise={data.slow} fallback={'loading…'}>
  {(value) => <pre>{JSON.stringify(value) as string}</pre>}
</Await>

// scroll restoration: either the component or createRouter({ scrollRestoration: true })
<ScrollRestoration />

// code-split a route's component
createRoute({ path: 'item/$id', component: lazyRouteComponent(() => import('./Item')) })

Current scope, divergences, and verification status are tracked in the generated bindings status table (sourced from this package's status.json).

Divergences from @tanstack/react-router

• Refs are props (octane's model) — createLink's forwardRef becomes a ref prop.
• Native DOM events — link callbacks receive browser events rather than React synthetic events.
• Router devtools are distributed separately and are not part of this binding.