/**
 * Shared internal utilities for query and mutation factories.
 */
import type { QueryKey } from "@tanstack/react-query";
/**
 * Internal query-key segment used to distinguish per-call factory args
 * from the base query key. Not part of the public API.
 */
export declare const FACTORY_KEY_ARGS_QUERY_KEY = "__ic_reactor_factory_key_args";
/**
 * Merge a base query key, optional per-call query key, and optional key-args
 * into a single query key array.
 *
 * Used by createInfiniteQueryFactory and createSuspenseInfiniteQueryFactory to
 * ensure each unique set of factory args produces a distinct cache entry.
 */
export declare function mergeFactoryQueryKey(baseQueryKey?: QueryKey, callQueryKey?: QueryKey, keyArgs?: unknown): QueryKey | undefined;
/**
 * Build a chained select function that first applies the config-level select
 * (if any) and then the hook-level select (if any).
 *
 * This enables `createQuery` / `createSuspenseQuery` to support two-level
 * select chaining without duplicating the logic.
 */
export declare function buildChainedSelect<TData, TSelected, TFinal = TSelected>(configSelect: ((data: TData) => TSelected) | undefined, hookSelect: ((data: TSelected) => TFinal) | undefined): (rawData: TData) => TSelected | TFinal;
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