Type alias PlaceholderDataFunction<TQueryFnData, TError, TQueryData, TQueryKey>

PlaceholderDataFunction<TQueryFnData, TError, TQueryData, TQueryKey>: ((previousData, previousQuery) => TQueryData | undefined)

Type Parameters

TQueryFnData = unknown
TError = DefaultError
TQueryData = TQueryFnData
TQueryKey extends QueryKey = QueryKey

Type declaration

- (previousData, previousQuery): TQueryData | undefined
- Parameters
  - previousData: TQueryData | undefined
  - previousQuery: Query<TQueryFnData, TError, TQueryData, TQueryKey> | undefined
  Returns TQueryData | undefined

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