PlaceholderDataFunction

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

Defined in: packages/query-core/src/types.ts:268

Type Parameters#

TQueryFnData#

TQueryFnData = unknown

TError#

TError = DefaultError

TQueryData#

TQueryData = TQueryFnData

TQueryKey#

TQueryKey extends QueryKey = QueryKey

Parameters#

previousData#

TQueryData | undefined

previousQuery#

| Query<TQueryFnData, TError, TQueryData, TQueryKey> | undefined

Returns#

TQueryData | undefined