import { FC } from 'react';
import { AddToCartFunction, CartActions, CartState, ClearCartFunction, DecrementItemFunction, IncrementItemFunction, InitCartFunction, IsInCartFunction, RemoveFromCartFunction, StorageTypes, ToggleCartFunction, UpdateItemFunction } from './use-cart.types';
export declare type CartContextValue = null | CartState;
export declare type CartActionContextValue = null | CartActions;
export declare type CartProviderProps = {
    children: JSX.Element | JSX.Element[];
    storage?: StorageTypes;
    cacheKey?: string;
    initCart?: InitCartFunction;
    addToCart?: AddToCartFunction;
    clearCart?: ClearCartFunction;
    decrementItem?: DecrementItemFunction;
    incrementItem?: IncrementItemFunction;
    removeFromCart?: RemoveFromCartFunction;
    toggleCart?: ToggleCartFunction;
    updateItem?: UpdateItemFunction;
    isInCart?: IsInCartFunction;
};
export declare const CartProvider: FC<CartProviderProps>;
/**
 * Provides access to the cart provider's state
 *
 * @returns an object with the cart's current state
 */
export declare function useCartState(): CartState | null;
/**
 * Provides access to actions that interact with the cart
 *
 * @returns an object with functions for interacting with the cart.
 *
 * addToCart() - add an item to the cart; if the item is already in the cart,
 * this function will increase the quantity of that item
 * removeFromCart() - remove an item from the cart
 * incrementItem() - increment the quantity of an item in the cart
 * decrementItem() - decrement the quantity of an item in the cart
 * toggleCart() - toggles the cart's show status
 * clearCart() - removes all items from the cart
 */
export declare function useCartActions(): CartActions | null;
/**
 * Provides access to the active isInCart function
 *
 * @returns a function which determines whether a line item is already in the cart
 */
export declare function useIsInCart(): IsInCartFunction;