Mark code 3

managedDependencies.js

// User ID
var _id;

// Dependency handlers
var dep = [];
var depDone = (function() {
    var i = 0;//# dependencies
    return function() {
        i += 1;
        if(dep.length === i) {//all dependencies are done
             // Done, now get user from Kinvey safely
             kinvey.user.fetch(_id, function(user) {
                 // User found, go ahead and render page
             });
        }
    };
}()),

// Facebook
window.fbAsyncInit = function() {
    FB.init({ appId: 'XXX' });

    // Do we have a user?
    FB.getLoginStatus(function(response) {
        if('connected' === response.status) {
            // Save user ID
            _id = response.authResponse.userID;
            
            // Notify that we're done
            depDone();
        }
    });
};
dep.push(window.fbAsyncInit);