gistfile1.txt

var lessFiles = __dirname + '/../src'
  , cssFiles = __dirname + '/../public/css';

var less = require('less')
  , fs = require('fs');

var onModify = function(filename){
  fs.readFile(lessFiles + '/' + filename, function(err, lessCss){
    if(err)
      throw new Error(err);

    lessCss = lessCss.toString();

    less.render(lessCss, function(err, css) {
      var newFilename = cssFiles + '/' + filename.replace(/\.less$/, '.css');
      fs.writeFile(newFilename, css);
    });
  });
}
// module.exports = function() {
  fs.readdir(lessFiles, function(err, files){
    if(err)
      throw new Error(err);

    files.filter(function(path){
      return path.match(/\.less$/); // Filter not .less files
    }).forEach(function(path){
      fs.watch(lessFiles + '/' + path, function(event, filename){
        if(filename){
          console.log('This file is getting lessd' + filename);
          onModify(filename);
        }
      });
    });
  });
// }