import { type CategoryEntity } from '../entities/index.js';
import type { SizeScale, SizeScalesQuery } from '@farfetch/blackout-client';
import type { StoreState } from '../types/index.js';
/**
 * Returns a specific scale by its id.
 *
 * @param state - Application state.
 * @param id    - Scale id.
 *
 * @returns Scale normalized.
 */
export declare const getSizeScale: (state: StoreState, id: SizeScale['sizeScaleId']) => SizeScale | undefined;
/**
 * Returns all size scales fetched.
 *
 * @param state - Application state.
 *
 * @returns List of scales by id.
 */
export declare const getSizeScales: (state: StoreState) => Record<number, SizeScale> | undefined;
/**
 * Returns a list of size scales for the provided category id.
 *
 * @param state      - Application state.
 * @param categoryId - Category id.
 *
 * @returns Size scales for the provided category id.
 */
export declare const getSizeScalesByCategory: (state: StoreState, categoryId: CategoryEntity['id']) => SizeScale[];
/**
 * Returns the loading state of size scales.
 *
 * @param state - Application state.
 *
 * @returns Size scales loading state.
 */
export declare const areSizeScalesLoading: (state: StoreState) => boolean;
/**
 * Returns the loading state of the size scale.
 *
 * @param state           - Application state.
 * @param scaleIdentifier - Size scale id or the query object used to fetch the size scale.
 *
 * @returns The scale loading state.
 */
export declare const isSizeScaleLoading: (state: StoreState, scaleIdentifier: SizeScale['sizeScaleId'] | SizeScalesQuery) => boolean | undefined;
/**
 * Returns the error state of size scales.
 *
 * @param state - Application state.
 *
 * @returns Size scales error state.
 */
export declare const getSizeScalesError: (state: StoreState) => import("@farfetch/blackout-client").BlackoutError | null;
/**
 * Returns the error of the size scale.
 *
 * @param state           - Application state.
 * @param scaleIdentifier - Size scale id or the query object used to fetch the size scale.
 *
 * @returns The scale error.
 */
export declare const getSizeScaleError: (state: StoreState, scaleIdentifier: SizeScale['sizeScaleId'] | SizeScalesQuery) => import("@farfetch/blackout-client").BlackoutError | undefined;
/**
 * Checks if a specific size scale is fetched.
 *
 * @param state   - Application state.
 * @param scaleId - Size scale id.
 *
 * @returns If the scale was requested or not.
 */
export declare const isSizeScaleFetched: (state: StoreState, scaleId: SizeScale['sizeScaleId']) => boolean;