text: const dbm = global.dbm || require('db-migrate');
  
  const type = dbm.dataType;
  
  exports.up = function (db, callback) {
    db.runSql('ALTER TABLE site ADD COLUMN domain text, ADD COLUMN config text', (err) => {
      if (err) throw err;
      callback();
    });
  };
  
  exports.down = function (db, callback) {
    db.runSql('ALTER TABLE site DROP COLUMN domain, DROP COLUMN config', (err) => {
      if (err) throw err;
      callback();
    });
  };
  