text: 'use strict';
  
  module.exports = {
    up: (queryInterface, Sequelize) => {
      return queryInterface.addColumn('transactions', 'currency_rates', {
        type: Sequelize.JSON,
        allowNull: false,
        field: 'currency_rates',
      });
    },
  
    down: (queryInterface, Sequelize) => {
      return queryInterface.removeColumn('transactions', 'currency_rates');
    },
  };
  