text: const LocalStorageService = (function () {
      var _service;
      var access_token = "vic_token";
      var refresh_token = "vic_refresh_token";
      
      function _getService() {
          if (!_service) {
              _service = this;
              return _service
          }
          return _service
      }
      function _setToken(tokenObj) {
          localStorage.setItem(access_token, tokenObj.access_token);
          localStorage.setItem(refresh_token, tokenObj.refresh_token);
      }
      function _getAccessToken() {
          return localStorage.getItem(access_token);
      }
      function _getRefreshToken() {
          return localStorage.getItem(refresh_token);
      }
      function _clearToken() {
          localStorage.removeItem(access_token);
          localStorage.removeItem(refresh_token);
      }
      return {
          getService: _getService,
          setToken: _setToken,
          getAccessToken: _getAccessToken,
          getRefreshToken: _getRefreshToken,
          clearToken: _clearToken
      }
  })();
  export default LocalStorageService;