text: export const GET_TODOS = "GET_TODOS";
  export const GET_TODO = "GET_TODO";
  export const ADD_TODO = "ADD_TODO";
  export const DELETE_TODO = "DELETE_TODO";
  export const EDIT_TODO = "EDIT_TODO";
  export const USER_LOADING = "USER_LOADING";
  export const USER_LOADED = "USER_LOADED";
  export const AUTH_ERROR = "AUTH_ERROR";
  export const REGISTER_SUCCESS = "REGISTER_SUCCESS";
  export const REGISTER_FAIL = "REGISTER_FAIL";
  export const LOGIN_SUCCESS = "LOGIN_SUCCESS";
  export const LOGIN_FAIL = "LOGIN_FAIL";
  export const LOGOUT_SUCCESS = "LOGOUT_SUCCESS";
  