Simple node program for js/css minification using yuicompressor

compress.js

/*
 * basic node program for js/css minification using yuicompressor
 *
 * Compress the file test.js:
 * $ node compress.js ../js/test.js
 * Created Minified File: ../js/test.min.js
 *
 * Compress the file test.css
 * $ node compress.js ../css/test.css
 * Created Minified File: ../css/test.min.css
 *
 */

var min = require('yuicompressor');
var fs  = require('fs');

var _minify = function(name, ext, content) {
  min.compress( content, {
    'charset' :'utf8'
  , 'type'    : ext
  , 'nomunge' : true
    }, function(err, data, extra) {
        _writeFile(name.replace('.' + ext, '.min.' + ext), data) 
    });
};

var _writeFile = function(name, content) {
    fs.writeFile(name, content, function (err) {
        if (!err) {
            console.log('Created Minified File: ' + name);
        } else {
          throw err;
        }
    });
};

var _readFile = function(options) {
    fs.readFile(options.name, 'utf8', function(err, source) {
        if (!err) {
            _minify(options.name, options.ext, source);
        } else {
          throw err;
        }
    });
};

var arguments = function() {
    var args = process.argv.splice(2);
    return {
        'name' : args[0]
      , 'ext'  : args.length > 1 ?  args[1] : 'js'
    }
};

_readFile(arguments());