sequelize.transaction.js

transaction.js

const transaction = async () => {
  let trx = await sequelize.transaction()
  try{
    const user = await User.create({
      first_name: 'wwang',
      last_name: 'ahahaha'
    }, {trx})
    const updateResult = await User.update({
      first_name: 'wang'
    }, {
      where: {id: user.dataValues.id}
    }, {trx})
    await trx.commit()
  } catch (err) {
    await trx.rollback(new Error('something went wrong'))
  } 
}

// get transaction
const transaction = await sequelize.transaction();
try {
// step 1
await Model.destroy({where: {id}}, {transaction});

// step 2
await Model.create({}, {transaction});

// commit
await transaction.commit();

} catch (err) {
// Rollback transaction if any errors were encountered
await transaction.rollback();
}

https://stackoverflow.com/questions/42870374/node-js-7-how-to-use-sequelize-transaction-with-async-await/43342688#43342688