Greasy Fork

Question about using external library

Just curious, is it allowed on GreasyFork to inject external library as what it is done in this script?

//注入JS：jquery
function injectJs(e) {
    if (e.jQuery) {
        log('jquery available');
    } else {
        var ele = e.document.createElement('script');
        ele.src = "https://cdn.staticfile.org/jquery/1.12.4/jquery.min.js";
        e.document.body.appendChild(ele);
        var id = e.setInterval(function () {
            if (e.jQuery) {
                e.clearInterval(id);
            }
        }, 100);
    }
}

已移除，是历史代码。按道理讲，是不推荐直接注入的。