Is Clipboard Manager and Text Expander - Clipboard History Pro safe?

async function pollClipboardWithModernApi() {  clearExistingTimer();  if (!enabled) return;  try {    const text = await navigator.clipboard.readText();    const normalized = text ? text.trim() : text;    const previous = lastClipboardContent ? lastClipboardContent.trim() : lastClipboardContent;    if (normalized !== previous) {      lastClipboardContent = text;      if (text) {        notATextDetected = false;        onChange({ isText: true, value: text });      } else if (!notATextDetected) {        notATextDetected = true;        onChange({ isText: false, value: text });      }    }  } catch (error) {    useModernAPI = false;    pasteElement = pasteElement || document.getElementById("paste-field");    if (pasteElement) {      pasteElement.focus();      return pasteLoop();    }  }  if (enabled) {    const delay = isTabVisible ? 500 : 1000;    currentTimer = setTimeout(pollClipboardWithModernApi, delay);  }}function pasteLoop() {  clearExistingTimer();  if (!enabled) return;  const previous = pasteElement.value;  pasteElement.value = "";  document.execCommand("paste");  const text = pasteElement.value;  if (text ? text !== previous : !notATextDetected) {    lastClipboardContent = text;    notATextDetected = !text;    onChange({ isText: Boolean(text), value: text });  }  if (enabled) {    const delay = isTabVisible ? 500 : 1000;    currentTimer = setTimeout(pasteLoop, delay);  }}

function onTextChange({ isText, value }) {  if (ignoreNextClipboardChange) {    ignoreNextClipboardChange = false;    return;  }  if (!isText || !value) {    resetActive();    return;  }  if (settings.get("isCharsLimited") && value.length > settings.get("charsLimit")) {    resetActive();    return;  }  const permissions = perm.getAll();  const blacklistEnabled = settings.get("enableBlacklist");  const blacklistDomains = settings.get("blacklistDomains") || [];  if (permissions.tabs && blacklistEnabled) {    getActiveTab().then((tab) => {      if (!tab || !tab.url || !isBlacklisted(tab.url, blacklistDomains)) {        saveClipboardItem(value);      }    });  } else {    saveClipboardItem(value);  }}function saveClipboardItem(text) {  const hash = md5.hash(text);  if (db.isNew(hash)) {    db.add({ hash, text })      .then(() => setActive(hash))      .then(() => autoSendToCloudPro(text, hash))      .catch((error) => {        captureError(error);        resetActive();      });  } else {    setActive(hash).then(() => db.updateCopyDate(hash));  }}function autoSendToCloudPro(text, hash) {  if (settings.get("autoSyncCloudPro") && hasSubs()) {    return fb.addItems([{ text, hash }]);  }  return Promise.resolve();}

const firebaseConfig = {  apiKey: "AIzaSyDw1aayLI6NJQiVGMZ2QwL6TSF6UzZoOiA",  databaseURL: "https://clipboard-history-pro-249808.firebaseio.com",  storageBucket: "clipboard-history-pro-249808.appspot.com",  authDomain: "auth.clipboardextension.com"};function initFirebase(sortMethod = "dateLastCopied") {  if (instanceInitialized) return;  currentSortMethod = sortMethod;  firebase.initializeApp(firebaseConfig);  functions = firebase.functions();  db = firebase.database();  startAuthHandler();  instanceInitialized = true;}function addItems(items) {  if (!items || !items.length) return;  if (!itemsRefPath) return;  const records = items    .filter((item) => item.text && item.hash)    .map((item) => {      item.sourceDevice = "extension_chrome";      item.dateAdded = Date.now();      item.dateLastCopied = Date.now();      return item;    });  const itemsRef = firebase.database().ref(itemsRefPath);  const writes = records.map((item) =>    itemsRef.child(item.hash).set(item)  );  return Promise.all(writes);}

function buildClipboardRecord({ text, hash }, overrides) {  const now = Date.now();  const itemHash = hash || md5.hash(text);  return {    text,    hash: itemHash,    dateAdded: now,    dateLastCopied: now,    length: text.length,    shortText: text.slice(0, 255),    tags: [],    sourceUrl: null,    isFavorite: false,    isMerged: false,    isEdited: false,    isFromCloudPro: false,    title: null,    ...overrides  };}function initLocalClipboardDatabase() {  dbInstance = new Dexie("clipboard-history");  dbInstance.version(0.1).stores({ history: "++id" });  dbInstance.version(1).stores({ historyV2: "&hash, dateAdded, dateLastCopied" });  table = dbInstance.historyV2;}function add({ hash, text }, options) {  const record = buildClipboardRecord({ text, hash }, options);  return table.add(record).then(() => {    hashCache.add(record.hash);    emitChange("item_added", { hash: record.hash });    return { hash: record.hash };  });}