text: export const SET_ALL_ITEMS = 'SET_ALL_ITEMS';
  export const ADD_SELECTED_ITEM = 'ADD_SELECTED_ITEM';
  export const UPDATE_SELECTED_ITEM = 'UPDATE_SELECTED_ITEM';
  export const ADD_ITEM = 'ADD_ITEM';
  export const UPDATE_ITEM = 'UPDATE_ITEM';
  export const REMOVE_ITEM = 'REMOVE_ITEM';
  export const FETCH_ITEMS_FAILED = 'FETCH_ITEMS_FAILED';
  
  export const SET_SELECTED_ITEMS = 'SET_SELECTED_ITEMS';
  export const DELETE_ALL_SELECTED_ITEMS = 'DELETE_ALL_SELECTED_ITEMS';
  