import type { DependencyList } from "react";
/**
 * Performs a deep comparison between two values.
 * @param val1 The first value.
 * @param val2 The second value.
 * @returns `true` if the values are deeply equal, `false` otherwise.
 */
export declare function isDeepEqual(val1: any, val2: any): boolean;
/**
 * Compares two dependency arrays, using deep comparison for objects/arrays
 * and reference comparison for functions.
 */
export declare function areDepsEqualManually(// Exporting for testing purposes
prevDeps: DependencyList | undefined, nextDeps: DependencyList): boolean;
/**
 * React hook that behaves like `useEffect`, but performs a deep comparison
 * of dependencies instead of a shallow reference comparison.
 *
 * @param callback Function to be executed when dependencies change.
 * Can return a cleanup function.
 * @param dependencies Dependency array. The callback is executed if any
 * dependency changes deeply (except functions, which are
 * compared by reference).
 */
export declare function useDeepCompareEffect(callback: () => void | (() => void), dependencies: DependencyList): void;