title: logout from google and facebook using angular
body: <p>after <strong>login</strong> to <strong>Facebook</strong> and <strong>Google</strong> using <strong><a href="https://www.npmjs.com/package/angular4-social-login" rel="nofollow noreferrer">this</a></strong></p>
  
  <p>I am unable to signout for Google and Facebook  with this code.</p>
  
  <pre><code>this.authService.signOut();
  sessionStorage.clear();
  </code></pre>
  
  <p>Can anyone please help me!</p>