Node git pull

pull.js

#!/usr/bin/env nodejs
var http = require("http");

function pull(site)
{
        return new Promise((resolve) =>
        {
                const g = require("simple-git")("/data/www/" + site);

                g.pull((err, update) =>
                {
                        resolve("<pre>" + (err ? JSON.stringify(err, null, 4) : JSON.stringify(update, null, 4)) + "</pre>");
                });
        });
}

http.createServer(function(req, res)
{
        res.writeHead(200, { "Content-Type": "text/html" });

        const sites = ["site1.art.br", "site2.com.br", "site3.ca", "site4.menu"];
        const tasks = [];

        sites.map((s) =>
        {
                tasks.push(new Promise((resolve) =>
                {
                        res.write("<h1>Pulling " + s + "</h1>");

                        pull(s).then((r) =>
                        {
                                res.write(r);
                                res.write("<hr/>");
                                resolve();
                        });
                }));
        });

        return Promise.all(tasks).then(() => res.end("<h2>All done!</h2>"));
}).listen(8080, "localhost");

console.log("Server running at http://localhost:8080/");