const {getUser, getOrders, getOrderItems} = require('./api');

getUser('af63bd4c8601b7ee')
.then(user => {
  return getOrders(user.id).then(orders => {
    const promises = orders.map(order => getOrderItems(order.id));
    return Promise.all(promises).then(items => {
      console.log(items);
    })
  });
});