obter solicitação com promessa em nodejs

'use strict';

var get = function get(url) {

// return new pending promise
return new Promise(function (resolve, reject) {

// http, https
var lib = require(url.match(/^(https|http)/));

var request = lib.get(url, function (response) {
if (response.statusCode < 200 || response.statusCode > 299) {
reject
(new Error('Failed to load page, status code: ' + response.statusCode));
}

var body = [];

response
.on('data', function (chunk) {
return body.push(chunk);
});

// resolve promise
response
.on('end', function () {
return resolve(body.join(''));
});
});

request
.on('error', function (err) {
return reject(err);
});
});
};