text: export const AUTH_USER = 'auth_user';
  export const UNAUTH_USER = 'unauth_user';
  export const AUTH_ERROR = 'auth_error';
  export const FETCH_MESSAGE = 'fetch_message';
  export const FETCH_MESSAGES = 'fetch_messages';
  export const CLEAR_MESSAGE = 'clear_message';
  export const USR_NAME = 'usr_name';