@tanstack/react-router@1.170.37

Patch Changes

• #8418 e561fa1 - deepEqual now takes its flags as positional arguments — deepEqual(a, b, partial?, explicitUndefined?) — instead of an options object. The router's hot callers (Link option stabilization and active-state checks, matchRoute) no longer allocate an options object per comparison, and the comparator reads two booleans instead of a polymorphic object. explicitUndefined replaces ignoreUndefined: false. deepEqual is an internal helper; it stays exported for compatibility of two-argument calls.

• #8419 a1c8d1a - resolvePath (internal helper) now takes positional arguments — resolvePath(base, to, trailingSlash?, cache?) — so buildLocation and matchRoute no longer allocate an options object per path resolution.

• #8204 cbbfbe3 - Stream large deferred SSR hydration payloads through a backpressure-aware router transport, fail known setup errors before response creation, and close cancelled or expired transforms safely.

  Start now cancels discarded middleware and HEAD response bodies, including plain streams and derived branches.

  Server-function raw streams share one ordered response. Arbitrary or sequential consumption can require potentially unbounded buffering of unread data on the client. Cancelling one raw stream discards it locally, while aborting the whole call cancels the response and server work. Consume streams concurrently, cancel unused streams promptly, or use separate calls when independent backpressure is required. A raw stream that exceeds its unread-byte limit now fails alone; sibling streams and the JSON result keep flowing.

  The JSON wire shape of a RawStream server-function argument changed. Clients and servers must run matching versions for requests that pass a RawStream.

  The frame-protocol constants (FRAME_TYPE_*, MAX_FRAME_PAYLOAD_SIZE, MAX_FRAMED_STREAMS) moved from the @tanstack/start-client-core root to the @tanstack/start-client-core/client-rpc subpath.

  Router requests whose Accept header allows neither text/html nor */* now receive 406 Not Acceptable instead of 500.

  Framework adapters share the body <Scripts> composition (getSsrBodyScriptParts, composeSsrBodyScripts) and the eager HTML response wrapper (renderSsrHtmlResponse) from @tanstack/router-core.

  Solid SSR now emits one document type and renders late lazy errors through route boundaries. A Solid <Await> without a fallback no longer holds the streamed shell; it renders inside the nearest <Suspense> boundary like React and Vue, and now renders falsy resolved values.

  Static server functions decode cached RawStream values with the client deserializer plugins.

  SSR Query integrations now keep request cleanup and stream ownership aligned with the router lifecycle.

• #8420 8e164d2 - useLinkProps no longer calls through an internal wrapper. The host element Link renders on is an @internal overload parameter that is stripped from the published declarations, so the public useLinkProps(options, forwardedRef?) signature is unchanged.

• Updated dependencies [bc80866, e561fa1, cbbfbe3, a1c8d1a, cbbfbe3, a0b2ad9, 1ca361b]:

  • @tanstack/router-core@1.171.31