bookmarklet.js

if (!window.location.host.startsWith("www.amazon.")) {
    alert("This bookmarklet must be run on an Amazon site!");
} else {
    var previousCount = -1;
    var unchangedCount = 0;
    var checkExist = setInterval(function () {
        var items = document.querySelectorAll(".g-item-sortable");
        if (document.getElementById("endOfListMarker") || unchangedCount >= 3) {
            clearInterval(checkExist);
            const a = document.createElement("a");
            const file = new Blob([document.getElementById("wishlist-page").outerHTML], {
                type: "text/html",
            });

            var filename =
                window.location.host + "_" + document.getElementById("listId").value + "_" + opts.language + ".html";

            a.href = URL.createObjectURL(file);
            a.download = filename;
            a.click();

            URL.revokeObjectURL(a.href);
        } else {
            if (items.length === previousCount) {
                unchangedCount++;
            } else {
                unchangedCount = 0;
            }
            previousCount = items.length;
            last = items[items.length - 1];
            last.scrollIntoView();
        }
    }, 2000);
}