I am trying to retrieve a json object to use it in another module, but I have a problem with callback. I have the error callback is not a function. I use callback because my variable description is undefined, so i guess it's a problem of asynchronous.

Could you help me plz :)

var leboncoin = function () {

    var http = require('http')

    var bl = require('bl')



    http.get(http://www.website.com, function (response, callback) {

        response.pipe(bl(function (err, data) {

            if (err) {

                return console.error(err)

                callback(err);

            }

            var data = data.toString()



            var brand = ...

            var model = ...

            var releaseDate = ...

            var km = ...

            var fuel = ...

            var gearbox = ...



            description.Brand = brand;

            description.Model = model;

            description.Year = releaseDate;

            description.KM = km;

            description.Fuel = fuel;

            description.Gearbox = gearbox;



            callback(description);

            return (description)



            /*console.log(description.Brand);

            console.log(description.Model);

            console.log(description.Year);

            console.log(description.KM);

            console.log(description.Fuel);

            console.log(description.Gearbox);*/



        }))

    })

}



exports.leboncoin = leboncoin;

var module = require('./leboncoin');

var res = module.leboncoin();



console.log(res);