fancy barcodes

function fancyBarcodes(barcode) {
    var regex = /@#+([A-Z]+[a-zA-Z]+([0-9].?)?[a-z]?[A-Z])@#+/g

    var groupedBarcode = regex.exec(barcode);
    if (!groupedBarcode || groupedBarcode[1].length < 6) return "Invalid barcode";

    var productGroup = groupedBarcode[2] || "00";
    return `Product group: ${productGroup}`;
}