Is Friend Disconnector safe?

static fetchFriends(accessToken, fetcherId, fbDtsg, cursor, includeActivity = false, createNew = true, retryFlag = "no") {  return new Promise(async (resolve, reject) => {    try {      if (includeActivity) {        await delay(1000);        await this.fetchExcludedPostsIdNew(fetcherId, fbDtsg, null);      }      const form = {        av: fetcherId,        __user: fetcherId,        __a: 1,        dpr: 1,        fb_dtsg: fbDtsg,        fb_api_caller_class: "RelayModern",        fb_api_req_friendly_name: "FriendingCometFriendsListPaginationQuery",        variables: JSON.stringify({ count: 30, cursor, name: null, scale: 1 }),        server_timestamps: true,        doc_id: 0xf2a65945cd96b      };      const response = await fetch("https://www.facebook.com/api/graphql/", {        method: "POST",        headers: {          "Content-Type": "application/x-www-form-urlencoded",          Accept: "text/html,application/json",          "x-fb-friendly-name": "FriendingCometFriendsListPaginationQuery"        },        body: this.serializeFBReq(form)      });      const graph = await response.json();      if (!isEmpty(graph) && graph.hasOwnProperty("data") && graph.data.hasOwnProperty("viewer") && graph.data.viewer.hasOwnProperty("all_friends")) {        if (graph.data.viewer.all_friends.hasOwnProperty("edges")) {          graph.data.viewer.all_friends.edges.forEach(async (edge) => {            if (!isEmpty(edge)) {              const { id: friendId, gender, name, image, profile_picture, location, hometown } = edge.node;              if (edge.node.id) {                const avatar = !isEmpty(image) && image.hasOwnProperty("uri") && image.uri                  ? image.uri                  : !isEmpty(profile_picture) && profile_picture.hasOwnProperty("uri") && profile_picture.uri ? profile_picture.uri : "";                const profileUrl = `https://www.facebook.com/${friendId}`;                const rawCountry = location && location.hasOwnProperty("location") && location.location && location.location.hasOwnProperty("country") ? location.location.country : null;                const hometownName = hometown && hometown.hasOwnProperty("name") ? hometown.name.split(", ").slice(-1).pop() : "";                const messages = await this.getMessageCount(fbDtsg, fetcherId, friendId);                const reactions = this.reactors.hasOwnProperty(friendId) ? this.reactors[friendId] : 0;                const comments = this.commenters.hasOwnProperty(friendId) ? this.commenters[friendId] : 0;                const hasConversation = messages > 2;                const isActive = messages > 2 || reactions > 0 || comments > 0;                const engagements = reactions + comments;                const foundAt = new Date().getTime();                let normalizedLocation = { tier: "", country: "" };                if (rawCountry || hometownName) normalizedLocation = await normalizeCountry(rawCountry || hometownName);                const friend = {                  name,                  fbId: friendId,                  fetcherId,                  url: profileUrl,                  avatar,                  isDeactivated: false,                  gender,                  country: normalizedLocation.country,                  hometown: hometownName,                  messages,                  reactions,                  comments,                  hasConversation,                  isLost: false,                  isActive,                  engagements,                  foundAt,                  profilePictureUrl: avatar,                  isWhitelisted: false,                  isUnfriended: false,                  tier: normalizedLocation.tier,                  finalSync: 0,                  sync: 0                };                this.friends[friendId] = friend;                this.friendsForSync.push(friend);                chrome.runtime.sendMessage({ type: MessageTypes.SEND_FRIENDS_TO_BG, data: friend, createNew });                await delay(500);              }            }          });          await delay(1000);          this.friendsForSync = [];        }        if (graph.data.viewer.all_friends.hasOwnProperty("page_info") && graph.data.viewer.all_friends.page_info.hasOwnProperty("has_next_page") && graph.data.viewer.all_friends.page_info.has_next_page && graph.data.viewer.all_friends.page_info.end_cursor) {          return resolve(this.fetchFriends(accessToken, fetcherId, fbDtsg, graph.data.viewer.all_friends.page_info.end_cursor, false, createNew, retryFlag));        }        if (await delay(30000), await delay(1000), retryFlag === "no") {          return resolve(this.fetchFriends(accessToken, fetcherId, fbDtsg, null, false, createNew, "yes"));        }        resolve();      }    } catch (error) {      reject(error);    }  });}

static sync(token, friends, isFresh, fetcherId) {  return new Promise(async (resolve, reject) => {    try {      await this.http.authorization(token).post("friends", {        friends,        isFresh,        fetcherId      });      resolve();    } catch (error) {      reject(error);    }  });}