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TanStack · Method

queryClient.ensureQueryData

queryClient.ensureQueryData returns cached query data or fetches it when needed. In the example, a TanStack Router loader uses it to prepare data before a route renders.

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Syntax

queryClient.ensureQueryData(options)

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  • QueryClient
  • ensureQueryData
  • queryOptions
  • useSuspenseQuery
  • loader

Source: React TanStack Router Basic React Query Example | TanStack Router Docs. Checked 2026-11-03.