Disabled useLiveQuery fails SSR hydration with error 253

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@Jaime02 ci sta già lavorando.

Dal 31/10/2026.

  • #2323 di @Jaime02 — aperta

Valutazione

Difficoltà
4/5
Tempo stimato
3-5 giorni
Idoneità per principianti
42/100
Tipo di issue
Bug
Chiarezza
Specificata chiaramente
Stato di attività
Attiva
Stack tecnologico
react, typescript, vite

Direzione di ricerca

Start in LiveQueryObserverClient.getServerSnapshot, which calls _waitForSsrLiveQuery for a disabled query's hash even though no collection exists. Then read DbClient._setSsrStreamingEnabled, where error 253 is thrown when the stream ends early. Reproduce with the DisabledQueryRoute in examples/react/start-ssr-e2e using vite build and vite preview. Done when a disabled query hydrates with status 'disabled' and the error event no longer carries error 253.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

  • I've validated the bug against the latest version of DB packages (main at 15d2d2d32)

Describe the bug
In a routerWithDbClient app, hydration fails when a live query is disabled, meaning its query callback returns undefined:

TanStack DB error 253 (The DB stream ended before the server-rendered query snapshot arrived.)
    at DbClient._setSsrStreamingEnabled

React reports a hydration error (#422) and falls back to client rendering for the boundary. This happens in both dev and production builds.

Cause
A disabled query has no collection, so the server never captures or streams a record for it. LiveQueryObserverClient.getServerSnapshot still calls _waitForSsrLiveQuery(queryHash, true) for its hash. While the DB stream is open, the hydration read suspends. When the stream ends, it throws 253.

To Reproduce
In examples/react/start-ssr-e2e, add a route:

function DisabledQueryRoute() {
  const [id] = React.useState<string | undefined>(undefined)
  const { status } = useLiveQuery({
    query: (q) => (id === undefined ? undefined : q.from({ todo: ssrTodoCollection })),
  })
  return <span>{status}</span>
}

Load the route with vite build && vite preview or with vite dev. The error event's cause chain contains error 253.

Expected behavior
A disabled query hydrates as status: 'disabled'. It should not wait for a record that the server never sends.

Additional context
Versions: @tanstack/db / @tanstack/react-db 1.0.0-rc.1.1, @tanstack/react-router-with-db 1.0.0-rc.1, React 19, Chromium.

Lingua principale
TypeScript
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Merge medio
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PR unite (30g)
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