openAndReuseOneTabPerURL firefox and chrome version

chrome.js

function openAndReuseOneTabPerURL(url) { 
  window.chrome.tabs.query({url: url + '*'}, function (tabs) {
  console.log(tabs);
    if (tabs.length > 0) {
      window.chrome.tabs.update(tabs[0].id, {active: true, highlighted: true});
    } else {
      window.chrome.tabs.create({url: url, active: true});
    }
  });
}

firefox.js

// https://developer.mozilla.org/en-US/docs/Code_snippets/Tabbed_browser
function openAndReuseOneTabPerURL(url) {
  var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
                     .getService(Components.interfaces.nsIWindowMediator);
  var browserEnumerator = wm.getEnumerator("navigator:browser");
 
  // Check each browser instance for our URL
  var found = false;
  while (!found && browserEnumerator.hasMoreElements()) {
    var browserWin = browserEnumerator.getNext();
    var tabbrowser = browserWin.gBrowser;
 
    // Check each tab of this browser instance
    var numTabs = tabbrowser.browsers.length;
    for (var index = 0; index < numTabs; index++) {
      var currentBrowser = tabbrowser.getBrowserAtIndex(index);
      if (currentBrowser.currentURI.spec.index(url) === 0) {
 
        // The URL is already opened. Select this tab.
        tabbrowser.selectedTab = tabbrowser.tabContainer.childNodes[index];
 
        // Focus *this* browser-window
        browserWin.focus();
 
        found = true;
        break;
      }
    }
  }
 
  // Our URL isn't open. Open it now.
  if (!found) {
    var recentWindow = wm.getMostRecentWindow("navigator:browser");
    if (recentWindow) {
      // Use an existing browser window
      recentWindow.delayedOpenTab(url, null, null, null, null);
    }
    else {
      // No browser windows are open, so open a new one.
      window.open(url);
    }
  }
}