QueryCollectionConfig

Defined in: packages/query-db-collection/src/query.ts:108

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:147

Whether the query should automatically run (default: true)

gcTime?

optional gcTime: number;

Defined in: packages/query-db-collection/src/query.ts:182

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:222

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:230

The timestamp TanStack Query uses to determine initialData freshness.

meta?

optional meta: Record<string, unknown>;

Defined in: packages/query-db-collection/src/query.ts:259

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:210

persistedGcTime?

optional persistedGcTime: number;

Defined in: packages/query-db-collection/src/query.ts:237

queryClient

queryClient: QueryClient;

Defined in: packages/query-db-collection/src/query.ts:143

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:132

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:130

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:154

refetchOnMount?

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

Defined in: packages/query-db-collection/src/query.ts:203

refetchOnReconnect?

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

Defined in: packages/query-db-collection/src/query.ts:196

refetchOnWindowFocus?

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

Defined in: packages/query-db-collection/src/query.ts:189

retry?

optional retry: RetryValue<TError>;

Defined in: packages/query-db-collection/src/query.ts:161

retryDelay?

optional retryDelay: RetryDelayValue<TError>;

Defined in: packages/query-db-collection/src/query.ts:168

select()?

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

Defined in: packages/query-db-collection/src/query.ts:141

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:175