in node js ,how to set login permission on facebook developer API?

My code is:- .. and they give me error in the "output" ,How can i solve it??

code:

var FB=require('fb');
    FB.login(function(response) {
        // handle the response
        if (response.status === 'connected') {
            console.log('Logged in.');
        }
        else {
            FB.login();
        }
    },
    {scope: 'publish_actions',
        return_scopes: true
    });

  Output: FB.login(function(response) {
       ^

    TypeError: FB.login is not a function
        at Object.<anonymous> (C:\Users\vvLocal\Desktop\work\facebook\fbLogin.js:3:4)

via vaishali bagul