cart import/export integration with BuyMusic.club

[sabjorn]

on a playlist page the data is available with:

const {props} = JSON.parse(document.querySelector("#__NEXT_DATA__").innerHTML);

and then the subsequent bandcamp track IDs can be found with:

props.pageProps.list.ListItems.forEach(() => console.log(externalId));

might be good to add extra metadata to the exported playlist -- including:

• playlist name
• playlist publish date
• playlist user