browser.runtime.sendMessage({
  method: "getPreference",
  pref: "browser.privatebrowsing.autostart"
}).then(pbAutoStart => {

  // We don't want to disable the addon if we are in auto private-browsing.
  if (!pbAutoStart) {
    browser.tabs.onCreated.addListener(tab => {
      if (tab.incognito) {
        disableAddon(tab.id);
      }
    });

    browser.tabs.query({}).then(tabs => {
      for (let tab of tabs) { // eslint-disable-line prefer-const
        if (tab.incognito) {
          disableAddon(tab.id);
        }
      }
    }).catch(() => {});
  }
}).catch(() => {});

function disableAddon(tabId) {
  browser.browserAction.disable(tabId);
  browser.browserAction.setTitle({ tabId, title: "Containers disabled in Private Browsing Mode" });
}