text: 'use strict';
  
  module.exports = {
    up: async (queryInterface, Sequelize) => {
      return queryInterface.addColumn('ChatMembers', 'lastReadMessageNumber', {
        type: Sequelize.DataTypes.INTEGER,
        defaultValue: null
      });
    },
    
    down: async (queryInterface, Sequelize) => {
      return queryInterface.removeColumn('ChatMembers', 'lastReadMessageNumber')
    }
  };
  