Returning data from callback

const crawler = require('crawler');

module.exports = {
    crawler:function (url){
        let result = null;
        let c = new crawler({
            maxConnections: 1,
            callback: function (error, response, done) {
                if (error) {
                    return console.error(error)
                }
                result = JSON.parse(response.body)
                //returning result from crawler() ??
                done()
            }
        });
        c.queue(url)
        return result
    },

}