import * as Sequelize from 'sequelize' async function up (utils: { transaction: Sequelize.Transaction queryInterface: Sequelize.QueryInterface sequelize: Sequelize.Sequelize db: any }): Promise { const data = { type: Sequelize.STRING, allowNull: false, defaultValue: 'instance-default' } await utils.queryInterface.addColumn('user', 'theme', data) } function down (options) { throw new Error('Not implemented.') } export { up, down }