QueryObserverOptions

Defined in: packages/query-core/src/types.ts:380

Extends#

• WithRequired<QueryOptions<TQueryFnData, TError, TQueryData, TQueryKey, TPageParam>, "queryKey">

Extended by#

• InfiniteQueryObserverOptions

• CreateBaseQueryOptions

Type Parameters#

TQueryFnData#

TQueryFnData = unknown

TError#

TError = DefaultError

TData#

TData = TQueryFnData

TQueryData#

TQueryData = TQueryFnData

TQueryKey#

TQueryKey extends QueryKey = QueryKey

TPageParam#

TPageParam = never

Properties#

enabled?#

optional enabled: QueryBooleanOption<TQueryFnData, TError, TQueryData, TQueryKey>;

Defined in: packages/query-core/src/types.ts:398

Set this to false or a function that returns false to disable automatic refetching when the query mounts or changes query keys. To refetch the query, use the refetch method returned from the useQuery instance. Accepts a boolean or function that returns a boolean.

Defaults to true.

gcTime?#

optional gcTime: number;

Defined in: packages/query-core/src/types.ts:277

The time in milliseconds that unused/inactive cache data remains in memory. When a query's cache becomes unused or inactive, that cache data will be garbage collected after this duration. When different garbage collection times are specified, the longest one will be used. Setting it to Infinity will disable garbage collection.

Defaults to 5 * 60 * 1000 (5 minutes), or Infinity during SSR.

Note: the maximum allowed time is about 24 days, imposed by setTimeout's 32-bit signed integer delay — see timeoutManager.setTimeoutProvider for a workaround.

Inherited from#

WithRequired.gcTime

initialData?#

optional initialData: 
  | TQueryData
| InitialDataFunction<TQueryData>;

Defined in: packages/query-core/src/types.ts:317

If set, this value will be used as the initial data for the query cache (as long as the query hasn't been created or cached yet). If set to a function, the function will be called once during the shared/root query initialization, and be expected to synchronously return the initial data. Initial data is considered stale by default unless a staleTime has been set. initialData is persisted to the cache.

Inherited from#

WithRequired.initialData

initialDataUpdatedAt?#

optional initialDataUpdatedAt: number | () => number | undefined;

Defined in: packages/query-core/src/types.ts:321

If set, this value will be used as the time (in milliseconds) of when the initialData itself was last updated.

Inherited from#

WithRequired.initialDataUpdatedAt

maxPages?#

optional maxPages: number;

Defined in: packages/query-core/src/types.ts:345

Maximum number of pages to store in the data of an infinite query.

Inherited from#

WithRequired.maxPages

meta?#

optional meta: Record<string, unknown>;

Defined in: packages/query-core/src/types.ts:341

Additional payload to be stored on each query. Use this property to pass information that can be used in other places.

Inherited from#

WithRequired.meta

networkMode?#

optional networkMode: NetworkMode;

Defined in: packages/query-core/src/types.ts:265

Controls whether a query is allowed to run based on the current network connectivity.

Defaults to 'online'.

See#

Network Mode for more information.

Inherited from#

WithRequired.networkMode

notifyOnChangeProps?#

optional notifyOnChangeProps: NotifyOnChangeProps;

Defined in: packages/query-core/src/types.ts:484

If set, the component will only re-render if any of the listed properties change. When set to ['data', 'error'], the component will only re-render when the data or error properties change. When set to 'all', the component will re-render whenever a query is updated. When set to a function, the function will be executed to compute the list of properties.

Defaults to undefined, in which case property access is tracked automatically, and the component only re-renders when one of the tracked properties changes.

persister?#

optional persister: QueryPersister<TQueryFnData, NoInfer<TQueryKey>, TPageParam>;

Defined in: packages/query-core/src/types.ts:290

This option can be used to persist the result of a query to an external storage, bypassing the need to actually call the queryFn. Useful for persisting a query's data across e.g. server/client boundaries.

Inherited from#

WithRequired.persister

placeholderData?#

optional placeholderData: 
  | NonFunctionGuard<TQueryData>
| PlaceholderDataFunction<NonFunctionGuard<TQueryData>, TError, NonFunctionGuard<TQueryData>, TQueryKey>;

Defined in: packages/query-core/src/types.ts:511

If set, this value will be used as the placeholder data for this particular query observer while the query is still in the loading data and no initialData has been provided.

queryFn?#

optional queryFn: 
  | typeof skipToken
| QueryFunction<TQueryFnData, TQueryKey, TPageParam>;

Defined in: packages/query-core/src/types.ts:285

The function that the query will use to request data. Required, unless a default query function has been set via queryClient.setQueryDefaults or queryClient.setDefaultOptions. Receives a QueryFunctionContext. Must return a promise that will either resolve data or throw an error. The data cannot be undefined.

Inherited from#

WithRequired.queryFn

queryHash?#

optional queryHash: string;

Defined in: packages/query-core/src/types.ts:295

The hashed form of queryKey, computed with queryKeyHashFn (or the default hashing function otherwise). Used as the actual cache key internally.

Inherited from#

WithRequired.queryHash

queryKey#

queryKey: TQueryKey & object;

Defined in: packages/query-core/src/types.ts:304

The query key to use for this query.

The query key will be hashed into a stable hash. See Query Keys for more information.

The query will automatically update when this key changes (as long as enabled is not set to false).

Inherited from#

WithRequired.queryKey

queryKeyHashFn?#

optional queryKeyHashFn: QueryKeyHashFunction<TQueryKey>;

Defined in: packages/query-core/src/types.ts:308

If specified, this function is used to hash the queryKey to a string.

Inherited from#

WithRequired.queryKeyHashFn

refetchInterval?#

optional refetchInterval: number | false | (query) => number | false | undefined;

Defined in: packages/query-core/src/types.ts:414

If set to a number, the query will continuously refetch at this frequency in milliseconds. If set to a function, the function will be executed with the latest data and query to compute a frequency

Defaults to false.

refetchIntervalInBackground?#

optional refetchIntervalInBackground: boolean;

Defined in: packages/query-core/src/types.ts:425

If set to true, the query will continue to refetch while their tab/window is in the background.

Defaults to false.

refetchOnMount?#

optional refetchOnMount: boolean | "always" | (query) => boolean | "always";

Defined in: packages/query-core/src/types.ts:462

If set to true, the query will refetch on mount if the data is stale. If set to false, will disable additional instances of a query to trigger background refetch. If set to 'always', the query will always refetch on mount (except when staleTime: 'static' is used). If set to a function, the function will be executed with the latest data and query to compute the value

Defaults to true.

refetchOnReconnect?#

optional refetchOnReconnect: boolean | "always" | (query) => boolean | "always";

Defined in: packages/query-core/src/types.ts:448

If set to true, the query will refetch on reconnect if the data is stale. If set to false, the query will not refetch on reconnect. If set to 'always', the query will always refetch on reconnect (except when staleTime: 'static' is used). If set to a function, the function will be executed with the latest data and query to compute the value.

Defaults to true unless networkMode is 'always'.

refetchOnWindowFocus?#

optional refetchOnWindowFocus: boolean | "always" | (query) => boolean | "always";

Defined in: packages/query-core/src/types.ts:434

If set to true, the query will refetch on window focus if the data is stale. If set to false, the query will not refetch on window focus. If set to 'always', the query will always refetch on window focus (except when staleTime: 'static' is used). If set to a function, the function will be executed with the latest data and query to compute the value.

Defaults to true.

retry?#

optional retry: RetryValue<TError>;

Defined in: packages/query-core/src/types.ts:246

If false, failed queries will not retry by default. If true, failed queries will retry infinitely. If set to an integer number, e.g. 3, failed queries will retry until the failed query count meets that number. If set to a function (failureCount, error) => boolean failed queries will retry until the function returns false.

Defaults to 3 on the client and 0 on the server.

Inherited from#

WithRequired.retry

retryDelay?#

optional retryDelay: RetryDelayValue<TError>;

Defined in: packages/query-core/src/types.ts:258

This function receives a retryAttempt integer and the actual Error and returns the delay to apply before the next attempt in milliseconds.

A function like attempt => Math.min(attempt > 1 ? 2 ** attempt * 1000 : 1000, 30 * 1000) applies exponential backoff.

A function like attempt => attempt * 1000 applies linear backoff.

Defaults to a function that applies exponential backoff, capped at 30 seconds.

Inherited from#

WithRequired.retryDelay

retryOnMount?#

optional retryOnMount: QueryBooleanOption<TQueryFnData, TError, TQueryData, TQueryKey>;

Defined in: packages/query-core/src/types.ts:474

If set to false, the query will not be retried on mount if it contains an error. If set to a function, the function will be executed with the query to compute the value.

Defaults to true.

select()?#

optional select: (data) => TData;

Defined in: packages/query-core/src/types.ts:500

This option can be used to transform or select a part of the data returned by the query function. It affects the returned data value, but does not affect what gets stored in the query cache. The select function will only run if data changed, or if the reference to the select function itself changes. To optimize, memoize the function so its reference stays stable across calls.

Parameters#

data#

TQueryData

Returns#

TData

staleTime?#

optional staleTime: StaleTimeFunction<TQueryFnData, TError, TQueryData, TQueryKey>;

Defined in: packages/query-core/src/types.ts:407

The time in milliseconds after data is considered stale. If set to Infinity, the data will never be considered stale. If set to 'static', the data will never be considered stale. If set to a function, the function will be executed with the query to compute a staleTime.

Defaults to 0.

structuralSharing?#

optional structuralSharing: boolean | (oldData, newData) => unknown;

Defined in: packages/query-core/src/types.ts:330

Set this to false to disable structural sharing between query results. Set this to a function which accepts the old and new data and returns resolved data of the same type to implement custom structural sharing logic.

Defaults to true.

Inherited from#

WithRequired.structuralSharing

suspense?#

optional suspense: boolean;

Defined in: packages/query-core/src/types.ts:507

If set to true, the query will suspend when status === 'pending' and throw errors when status === 'error'.

Defaults to false.

throwOnError?#

optional throwOnError: ThrowOnError<TQueryFnData, TError, TQueryData, TQueryKey>;

Defined in: packages/query-core/src/types.ts:493

Whether errors should be thrown instead of setting the error property. If set to true or suspense is true, all errors will be thrown to the error boundary. If set to false and suspense is false, errors are returned as state. If set to a function, it will be passed the error and the query, and it should return a boolean indicating whether to show the error in an error boundary (true) or return the error as state (false).

Defaults to false.