import type { CategoryEntity } from '../../entities/index.js';
import type { StoreState } from '../../types/index.js';
/**
 * Retrieves the error status of top categories.
 *
 * @example
 * ```
 * import { getTopCategoriesError } from '@farfetch/blackout-redux';
 *
 * const mapStateToProps = state => ({
 *     error: getTopCategoriesError(state)
 * });
 * ```
 *
 * @param state - Application state.
 *
 * @returns Error information (`null` if there are no errors).
 */
export declare const getTopCategoriesError: (state: StoreState) => import("@farfetch/blackout-client").BlackoutError | null;
/**
 * Retrieves a list of all the top categories (without a parent category).
 *
 * @example
 * ```
 * import { getTopCategories } from '@farfetch/blackout-redux';
 *
 * const mapStateToProps = state => ({
 *     topCategories: getTopCategories(state)
 * });
 * ```
 *
 * @param state - Application state.
 *
 * @returns - Top categories list.
 */
export declare const getTopCategories: (state: StoreState) => CategoryEntity[];
/**
 * Retrieves the loading state of top categories.
 *
 * @example
 * ```
 * import { areTopCategoriesLoading } from '@farfetch/blackout-redux';
 *
 * const mapStateToProps = state => ({
 *     isLoading: areTopCategoriesLoading(state)
 * });
 * ```
 *
 * @param state - Application state.
 *
 * @returns - Loading status of categories.
 */
export declare const areTopCategoriesLoading: (state: StoreState) => boolean;
/**
 * Returns the fetched status of top categories.
 *
 * @example
 * ```
 * import { areTopCategoriesFetched } from '@farfetch/blackout-redux';
 *
 * const mapStateToProps = state => ({
 *     areTopCategoriesFetched: areTopCategoriesFetched(state)
 * });
 * ```
 *
 * @param state - Application state.
 *
 * @returns - If top categories are fetched or not.
 */
export declare const areTopCategoriesFetched: (state: StoreState) => boolean;