nodejs: copy remote web file on local

urlToFile.js

/*
 * copy remote web file on local
 *
 * usage:
 * require('urlToFile')('http://domain.tld/image.jpg', '/local/path/image.jpg', function() {console.log('success !');}, function(message) {console.log(message);});
 */
 
var http = require('http');
var fs = require('fs');

module.exports = function(url, dest, successCallback, errorCallback) {
    var file = fs.createWriteStream(dest);
    var request = http.get(url, function(response) {
        response.pipe(file);
        file.on('finish', function() {
            file.close(successCallback);
        });
    }).on('error', function(err) {
        fs.unlink(dest);
        if (errorCallback) {
            errorCallback(err.message);
        }
  });
};