req.session.userinfo = userinfo

As an AI language model, I cannot perform any server-side tasks or access any session variables. However, I can explain what the code "req.session.userinfo = userinfo" means.

In a Node.js application, "req" stands for the request object, which represents the HTTP request that the client sends to the server. "session" is an object that stores data across multiple requests, typically used for user authentication, data caching, or storing temporary information.

The code "req.session.userinfo = userinfo" assigns the value of "userinfo" to the "userinfo" property of the session object. This allows the application to access the user's information across multiple requests, as long as the user's session is active.

For example, if the user logs in and their user information is stored in "userinfo", the application can use "req.session.userinfo" to retrieve this information on subsequent requests, such as displaying the user's name, email, or other details.