How does one use trumpet to inject a series of individual files into a page? I feel like the asynchronous nature of streams means these extensions may be loaded unreliably, is there a more correct way?

gistfile1.txt

fs.createServer(function(req, res){
	
    var extensionTrumpet = trumpet();
    extensionTrumpet.selectAll('#frameInitScript', function(elem){
      var writeOutStream = elem.createWriteStream();
      for(var i = 0; i < extensions.length; i++){
        fs.createReadStream(__dirname + '/../site/blocks/'+extensions[i]+'.js').pipe(writeOutStream);
      }
    });

    fs.createReadStream(__dirname+'/../site/frame.html')
    .pipe(extensionTrumpet).pipe(res);

});