QueryCollectionConfig

Defined in: packages/query-db-collection/src/query.ts:107

Configuration options for creating a Query Collection

Extends#

• BaseCollectionConfig<T, TKey, TSchema, QueryCollectionUtils<T, TKey, [TSchema] extends [never] ? T : InferSchemaInput<TSchema>, TError>>

Type Parameters#

T#

T extends object = object

The explicit type of items stored in the collection

TQueryFn#

TQueryFn extends (context) => any = (context) => any

The queryFn type

TError#

TError = unknown

The type of errors that can occur during queries

TQueryKey#

TQueryKey extends QueryKey = QueryKey

The type of the query key

TKey#

TKey extends string | number = string | number

The type of the item keys

TSchema#

TSchema extends StandardSchemaV1 = never

The schema type for validation

TQueryData#

TQueryData = Awaited<ReturnType<TQueryFn>>

Properties#

enabled?#

optional enabled: Enabled<TQueryData, TError, TQueryData, TQueryKey>;

Defined in: packages/query-db-collection/src/query.ts:146

Whether the query should automatically run (default: true)

gcTime?#

optional gcTime: number;

Defined in: packages/query-db-collection/src/query.ts:181

Time in milliseconds after which the collection will be garbage collected when it has no active subscribers. Defaults to 5 minutes (300000ms). Sync started without subscribers gets a minimum 50ms grace period. Pending preloads retain the collection until they settle. Preloading ready data refreshes the retention period. A non-positive or non-finite value disables automatic garbage collection.

Overrides#

BaseCollectionConfig.gcTime

initialData?#

optional initialData: TQueryData | InitialDataFunction<TQueryData>;

Defined in: packages/query-db-collection/src/query.ts:221

Data used to initialize the TanStack Query cache for an eager collection. The value has the original Query response shape and is projected through the collection's select option before rows are materialized.

initialDataUpdatedAt?#

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

Defined in: packages/query-db-collection/src/query.ts:229

The timestamp TanStack Query uses to determine initialData freshness.

meta?#

optional meta: Record<string, unknown>;

Defined in: packages/query-db-collection/src/query.ts:258

Metadata to pass to the query. Available in queryFn via context.meta

Example#

// Using meta for error context
queryFn: async (context) => {
  try {
    return await api.getTodos(userId)
  } catch (error) {
    // Use meta for better error messages
    throw new Error(
      context.meta?.errorMessage || 'Failed to load todos'
    )
  }
},
meta: {
  errorMessage: `Failed to load todos for user ${userId}`
}

networkMode?#

optional networkMode: NetworkMode;

Defined in: packages/query-db-collection/src/query.ts:209

persistedGcTime?#

optional persistedGcTime: number;

Defined in: packages/query-db-collection/src/query.ts:236

queryClient#

queryClient: QueryClient;

Defined in: packages/query-db-collection/src/query.ts:142

The TanStack Query client instance

queryFn#

queryFn: TQueryFn extends (context) => any[] | Promise<any[]> ? (context) => T[] | Promise<T[]> : TQueryFn;

Defined in: packages/query-db-collection/src/query.ts:131

Function that fetches data from the server. Must return the complete collection state

queryKey#

queryKey: TQueryKey | TQueryKeyBuilder<TQueryKey>;

Defined in: packages/query-db-collection/src/query.ts:129

The query key used by TanStack Query to identify this query

refetchInterval?#

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

Defined in: packages/query-db-collection/src/query.ts:153

refetchOnMount?#

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

Defined in: packages/query-db-collection/src/query.ts:202

refetchOnReconnect?#

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

Defined in: packages/query-db-collection/src/query.ts:195

refetchOnWindowFocus?#

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

Defined in: packages/query-db-collection/src/query.ts:188

retry?#

optional retry: RetryValue<TError>;

Defined in: packages/query-db-collection/src/query.ts:160

retryDelay?#

optional retryDelay: RetryDelayValue<TError>;

Defined in: packages/query-db-collection/src/query.ts:167

select()?#

optional select: (data) => T[];

Defined in: packages/query-db-collection/src/query.ts:140

Extracts the row array TanStack DB materializes from the Query response. The Query cache keeps the original response shape.

Parameters#

data#

TQueryData

Returns#

T[]

staleTime?#

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

Defined in: packages/query-db-collection/src/query.ts:174