This is simply a copy of the js port of YUI Compressor cssmin wraped as a node.js module.
cd path/to/your/node_modules
git clone git://github.com/fczuardi/node-css-compressor.git
var cssmin = require(node-css-compressor).cssmin;
var cssString = ".foobar { color : rgb(123, 123, 123); }";
console.log(cssmin(cssString));
cssmin.js Author: Stoyan Stefanov - http://phpied.com/ This is a JavaScript port of the CSS minification tool distributed with YUICompressor, itself a port of the cssmin utility by Isaac Schlueter - http://foohack.com/ Permission is hereby granted to use the JavaScript version under the same conditions as the YUICompressor (original YUICompressor note below).
YUI Compressor http://developer.yahoo.com/yui/compressor/ Author: Julien Lecomte - http://www.julienlecomte.net/ Copyright (c) 2011 Yahoo! Inc. All rights reserved. The copyrights embodied in the content of this file are licensed by Yahoo! Inc. under the BSD (revised) open source license.