text: 'use strict';
  
  module.exports = {
    up: (queryInterface, Sequelize) => {
      return Promise.all([
        queryInterface.addColumn('wallet', 'public_key', Sequelize.STRING(255), {
          allowNull: false,
        }),
        queryInterface.addColumn('wallet', 'private_key', Sequelize.STRING(255), {
          allowNull: false,
        }),
      ]);
    },
  
    down: (queryInterface, Sequelize) => {
      return Promise.all([
        queryInterface.removeColumn(
          'wallet',
          'public_key',
          Sequelize.STRING(255),
          {
            allowNull: false,
          }
        ),
        queryInterface.removeColumn(
          'wallet',
          'private_key',
          Sequelize.STRING(255),
          {
            allowNull: false,
          }
        ),
      ]);
    },
  };
  