https://www.biltmore.com/wp-content/themes/FoundationPress/src/assets/js/biltmore/deferCSS.js?ver=1790220501

1/** 
2 * Not sure if these are ever used or is necessary..
3 * basically converts any links with
4 * rel="async" or rel="defer"
5 * to
6 * rel="stylesheet" and media="screen"
7*/
8
9$(function(){
10    let deferred_css_files = document.querySelectorAll('link[rel="async"]');
11    for (let e of deferred_css_files) {
12        e.rel="stylesheet";
13        e.media="screen";
14    }
15});
16
17window.onload = function(){
18    let deferred_css_files = document.querySelectorAll('link[rel="defer"]');
19    for (let e of deferred_css_files) {
20        e.rel="stylesheet";
21        e.media="screen";
22    }
23}