text: chrome.storage.local.get('watchlist', (obj) => {
    let watchlist = obj.watchlist;
    if (watchlist) {
      watchlist = JSON.parse(watchlist);
      const len = watchlist.filter(todo => !todo.marked).length;
      if (len > 0) {
        chrome.browserAction.setBadgeText({ text: len.toString() });
      }
    } else {
      // Initial
      chrome.browserAction.setBadgeText({ text: '1' });
    }
  });
  