module.exports = { up: (queryInterface, Sequelize) => { // logic for transforming into the new state const p1 = queryInterface.changeColumn( 'Claim', 'amount', { type : Sequelize.DOUBLE, allowNull: true, } ); return Promise.all([p1]); }, down: (queryInterface, Sequelize) => { // logic for reverting the changes const p1 = queryInterface.changeColumn( 'Claim', 'amount', { type : Sequelize.STRING, allowNull: true, } ); return Promise.all([p1]); }, };