How to properly download a .zip file using Node Js, Archiver and Express
<p>I am attempting to zip the contents of two directories and download the resulting .zip file.  One directory contains .txt files and the other .jpg.  I am using archiver to zip the files and running the express framework on node js.  I am inclined to think that the problem exists in the download step, as the resulting zipped file that is created in the project root expands as expected, however when the file is downloaded, I get an "Error 2 - No such file or directory."</p>

<pre><code>    app.get('/download',function(req, res){

        zipFile = new Date() + "-Backup.zip";

        var output = fs.createWriteStream(__dirname +"/backups/"+ zipFile);
        var archive = archiver('zip');

        output.on('close', function() {
            console.log(archive.pointer() + ' total bytes');
            console.log('archiver has been finalized and the output file descriptor has closed.');
        });

        archive.on('error', function(err) {
            throw err;
        });

        archive.pipe(output);

        var files1 = fs.readdirSync(__dirname+'/posts');
        var files2 = fs.readdirSync(__dirname+'/uploads');
            for(var i = 0; i&lt; files1.length; i++){
                archive.append(fs.createReadStream(__dirname+"/posts/"+files1[i]), { name: files1[i] });
            }
            for(var i = 0; i&lt; files2.length; i++){
                archive.append(fs.createReadStream(__dirname+"/uploads/"+files2[i]), { name: files2[i] });
            }
        archive.finalize(); 
        res.download(__dirname + "/backups/" + zipFile, zipFile); 

    });
</code></pre>

<p>zipFile is a global variable.</p>

<p>The on 'close' logs fire properly and no errors occur, but the file will not open after being downloaded.  Is there an issue with response headers or something else I am unaware of?</p>

<p>Thanks for the help.</p>