deleteCompleted: function()

in todos.js [63:87]

• 21 lines of code
• 3 McCabe index (conditional complexity)

  deleteCompleted: function (callback) {
    const transaction = datastore.transaction();

    transaction.run(function (err, transaction) {
      if (err) {
        console.error(err);
      }
      const query = transaction.createQuery('Todo')
        .hasAncestor(datastore.key(['TodoList', LIST_NAME]))
        .filter('completed', true);

      query.run(function (err, items) {
        if (err) {
          transaction.rollback(callback);
          return;
        }

        transaction.delete(items.map(function (todo) {
          return todo.key;
        }));

        transaction.commit(callback);
      });
    });
  },