# Pastebin mNwKPrOR
try {
    // Try and looked for the logout button (login success)
    await page.waitFor(".logout", { timeout: 7000 });

    debug("Login successful.");

    return {
      page,
      browser
    };
    
  } catch {
    let exceptionTypeToThrow = new Error(
      "Unknown login exception. Please run login command in non-headless mode to visually debug."
    );

    await page
      .waitForFunction(
        'document.querySelector(".universal-message-content > .vertical-offset-xs").inner‌​Text.indexOf("942") > -1',
        { timeout: 1000 }
      )
      .then(
        () => true,
        () => {
          exceptionTypeToThrow = new exceptions.HeadlessBrowserDetectedException(
            `It is possible the browser has been detected as a bot. Please run login command in non-headless mode to visually debug.`
          );
        }
      );

    await page
      .waitForFunction(
        'document.querySelector(".universal-message-content > .universal-message-heading").inner‌​Text.indexOf("password you entered") > -1',
        { timeout: 1000 }
      )
      .then(
        () => true,
        () => {
          exceptionTypeToThrow = new exceptions.InvalidUsernamePasswordException(
            `It is possible the browser has been detected as a bot. Please run login command in non-headless mode to visually debug.`
          );
        }
      );

    throw exceptionTypeToThrow;
  }