How to properly check open redirect for security?

Question

Computer networks

I want to prevent Open redirect attack in my nodejs application.
Now May implementation is as follows:

var = require('url');

// http://example.com/login?redirect=http://example.com/dashboard
app.route('/login', function (req, res, next) {
   var redirect = req.query.redirect,
        paths = url.parse(redirect); 

   if (paths.host !== req.headers.host) {
      return next(new Error('Open redirect attack detected'));
   }

   return res.redirect(redirect);
});

You need to safely redirect to the main domain and subdomains:
For example:
example.com/dashboard
dashboard.example.com
Tell me how secure is my implementation and what needs to be improved?