Returning an Object from middleware function in Node.JS

I am new to Node.JS coming from a Java Background I am using express to build this Rest API . What I am trying to do is build the concept of a manager. I am looking for a elegant way of returning a user object in the following:

users route: user.js

router.get('/find/:email', function(req, res, next){
  userWare.findUserByEmail(req, res, next)
});

middleware/manager: usermiddleware.js

module.exports = {
    findUserByEmail: function(req, res, next) {
        models.core_user.find({
            where:{
                email: req.params.email
            }
        }).then(function(user){
            res.json(user)
        }, function(err){
            res.status(404).json(err);
        });
    },
}

So In this above function I would like to return the user object to the route instead of the json. so that I can create the json from the object in the route. The whole point of this manager class will be to fectch and return objects.

Copyright Notice：Content Author:「Andre Coetzee」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/35955217/returning-an-object-from-middleware-function-in-node-js