code: function get(key) {
              try {
                  if (key !== undefined) {
                      var result = encodeObjectString(STORE.getItem(storeName + key));
                      return result !== null ? result : false;
                  } else {
                      var resultAll = {};
  
                      Object.keys(STORE).map(function(key) {
                          if (key.indexOf(storeName) === 0 && key.indexOf(EXPIRE_KEY) === -1) {
                              var varKey = key.replace(storeName, '');
                              resultAll[varKey] = get(varKey);
                          }
                      });
  
                      return resultAll;
                  }
              } catch(error) {
                  console.error(error)
                  return false;
              }
          }
docs: Get the value stored under the given key, or the whole store
  @param  {string} [key] Index defined in @set
  @return {mixed}        Stored value