Delete Pending Post (Facebook Group)

!((groupId, dtsg) => {
    let glob = {
        dtsg: require("DTSGInitialData").token || document.querySelector('[name="fb_dtsg"]').value,
        posts: [],
        del: function() {
            this.posts.reduce((cp, post, index, arr) => {
                return cp.then((e) => {
                    if (e) {
                        let f = new FormData();
                        f.append("group_id", groupId);
                        f.append("post_id", post);
                        f.append("pending", 1);
                        f.append("story_dom_id", `mall_post_${post}`);
                        f.append("fb_dtsg", this.dtsg);
                        f.append("nctr[_mod]", "pagelet_pending_queue");
                        f.append("confirmed", 1);
                        return fetch("https://www.facebook.com/ajax/groups/mall/delete/?dpr=1", {method: "POST", credentials: "include", body: f}).then((e) => (String(e.status).match(/^2/g)) ? (console.log(`Deleted Post: ${post} || ${index + 1}/${arr.length}`), true) : (console.log(`Failed To Delete Post: ${post + 1} || ${index}/${arr.length}`), false));
                    }
                });
            }, Promise.resolve(true)).then((e) => {console.log("Done!");});
        },
        getPost: function(groupId, cur) {
            fetch(`https://www.facebook.com/ajax/pagelet/generic.php/PendingQueuePagelet?dpr=1&data=%7B%22group_id%22%3A${groupId}%2C%22cursor%22%3A%22${cur}%22%2C%22sort_option%22%3A%22request_time%22%7D&__a=1`).then((res) => res.text()).then((e) => {
                let cur = e.match(/(?<=cursor":").*(?=","sort)/g), post = e.match(/(?<=&post_id=)\d+(?=")/g);
                this.posts = [...this.posts, ...post];
                console.log(`Added Post ID To DB: ${String(post)}`);
                (cur) ? this.getPost(groupId, cur[0]) : this.del();
            });
        }
    };
    glob.getPost(groupId);
})(document.documentElement.outerHTML.match(/(?<=group_id=)\d+/g)[0]);