xhr.js

const request = new XMLHttpRequest();
request.open('POST', 'https://vitumob.xyz/order', true);
request.setRequestHeader('Accept', 'application/json, */*');
request.setRequestHeader('Content-Type', 'application/json;charset=utf-8');
request.onload = () => {
  if (request.readyState === request.DONE && request.status === 200) {
    component.order = JSON.parse(request.responseText);
    console.log('order: http://vitumob.xyz/cart/' + component.order.order_hex);
  }
};
request.onerror = (error) => { console.error(error); };

const orderToString = JSON.stringify({ order: JSON.stringify(order) });
request.send(orderToString);