Let's quickly recap the sign-in flow between our app and Auth0:

1. Our app redirects to Auth0 to allow the user to enter their credentials.
2. After the user has successfully signed in, Auth0 redirects back to our app with a code.
3. Our app can then request an access token from Auth0 with the code.

The sign-out flow is as follows:

1. Our app redirects to Auth0 to perform the logout.
2. A redirect then occurs back to our app.

So, we will have the following routes in our frontend app:

• /signin: Our app will navigate to this page to start the sign-in process. This page will call a method in the Auth0 client, which will redirect to a page in Auth0.
• /signin-callback: This is the page in our app that Auth0 will redirect back to with the code.
• /signout: Our app will navigate to this page to start the sign-out process. This page will call a method in the Auth0 client, which will redirect to a page in Auth0.
• /signout-callback: This is the page in our app that Auth0 will redirect back to after the logout has completed.