import type { TQueryKey } from "./types.js";
/**
 * Execute fetch with deduplication
 * If same key is already fetching, return existing promise
 *
 * @param key Query key
 * @param fetcher Function to fetch data
 * @param onFinally Callback to run when fetch completes
 * @returns Promise with fetched data
 */
export declare function executeFetch<TData>(key: string, fetcher: (signal: AbortSignal) => Promise<TData>, onFinally?: () => void): Promise<TData>;
/**
 * Cancel in-flight request for a key
 *
 * @param key Query key
 */
export declare function cancelFetch(key: string): void;
/**
 * Execute fetch with retry logic
 *
 * @param fetcher Function to fetch data
 * @param retry Number of retries or boolean
 * @param retryDelay Delay between retries in ms or function
 * @param signal AbortSignal to cancel request
 * @returns Promise with fetched data
 */
export declare function executeWithRetry<TData>(fetcher: (signal: AbortSignal) => Promise<TData>, retry: number | boolean, retryDelay: number | ((attempt: number) => number), signal: AbortSignal): Promise<TData>;
/**
 * Default retry delay with exponential backoff
 *
 * @param attempt Current attempt number
 * @returns Delay in milliseconds
 */
export declare function defaultRetryDelay(attempt: number): number;
/**
 * Setup window focus refetch listener
 *
 * @param callback Function to call when window gains focus
 * @returns Cleanup function to remove listener
 */
export declare function setupFocusRefetch(callback: () => void): () => void;
/**
 * Setup reconnect refetch listener
 *
 * @param callback Function to call when network reconnects
 * @returns Cleanup function to remove listener
 */
export declare function setupReconnectRefetch(callback: () => void): () => void;
/**
 * Resolve query key (static or reactive)
 *
 * @param key Query key
 * @returns Resolved string key
 */
export declare function resolveQueryKey(key: TQueryKey): string;