Output CSV based on the HTML of a John Lewis Gift List page

johnlewisgiftlist2csv.js

const guests = [].slice.call(document.querySelectorAll('tr.guest'));

const itemText = element => element.querySelector('td[align=left]').textContent.replace(/\(\d*\)/g, '').trim()

const guestData = guests.map(guestElement => {
    const name = itemText(guestElement);
    const message = itemText(guestElement.nextElementSibling)
    let giftEl = guestElement.nextElementSibling.nextElementSibling;
    let gifts = [];
    while ( giftEl.classList.contains('item') ) {
        gifts = gifts.concat(itemText(giftEl));
        giftEl = giftEl.nextElementSibling;
    }
    return {
        name,
        message,
        gifts,
    }
})

const guestCSV = guestData.map(guestItem => {
    const guestLine = [`"${guestItem.gifts.shift()}","${guestItem.name}","${guestItem.message}"`];
    const otherGiftLines = guestItem.gifts.map(gift => `"${gift}","",""`);
    return guestLine.concat(otherGiftLines).join("\n")
}).join("\n")

console.log(guestCSV);