text: export const CREATE_BOOK_SUCCESS = 'CREATE_BOOK_SUCCESS';
  export const FETCH_BOOKS_SUCCESS = 'FETCH_BOOKS_SUCCESS';
  export const FETCH_BOOK_BY_ID_SUCCESS = 'FETCH_BOOK_BY_ID_SUCCESS';
  
  export const DELETE_BOOK = 'DELETE_BOOK';
  export const DELETE_BOOK_SUCCESS = 'DELETE_BOOK_SUCCESS';
  
  export const ADD_TO_CART_SUCCESS = 'ADD_TO_CART_SUCCESS';
  export const FETCH_CART_SUCCESS = 'FETCH_CART_SUCCESS';
  export const DELETE_CART_ITEM = 'DELETE_CART_ITEM';
  export const DELETE_CART_ITEM_SUCCESS = 'DELETE_CART_ITEM_SUCCESS';
  export const CLEAR_CART = 'DELETE_CARD';
  export const CLEAR_CART_SUCCESS = 'DELETE_CARD_SUCCESS';