Tar each folder in current folder to its own tarball

tar.js

var fs = require('fs');
var _ = require('lodash');
var sys = require('sys');
var exec = require('child_process').exec;

function puts(error, stdout, stderr) { 
	sys.puts(stdout) 
}

_(fs.readdirSync('.'))
.filter(function(dirEntry) {
	var stat = fs.statSync(dirEntry);
	return stat.isDirectory();
})
.map(function (directoryName) {
	return  'tar -cf ' + directoryName + '.tar ' + directoryName;
})
.forEach(function (command) {
	exec(command, puts);
});