stylus-compile.js

var fs = require('fs'),
    path = require('path'),
    child_process = require('child_process');


function watchStyles(sourcefile, destinationfolder) {
  
  var Stylus = child_process.spawn('stylus', ['-c','-u', 'nib','-w', sourcefile, '--out', destinationfolder]);

  Stylus.stdout.pipe(process.stdout); // notifications: watching, compiled, generated.
  Stylus.stderr.pipe(process.stdout); // warnings: ParseError.

  Stylus.on('error', function(err) {
    console.log("Stylus process("+Stylus.pid+") error: "+err);
    console.log(err);
  });

  // Report unclean exit.
  Stylus.on('close', function (code) {
    if (code !== 0) {
      console.log("Stylus process("+Stylus.pid+") exited with code " + code);
    }
  });

}


function getDirectories(srcpath) {
  return fs.readdirSync(srcpath).filter(function(file) {
    return fs.statSync(path.join(srcpath, file)).isDirectory();
  });
}


var directories = getDirectories(__dirname);


function fromDir(directory,startPath,filter){

    //console.log('Starting from dir '+startPath+'/');

    if (!fs.existsSync(startPath)){
        console.log("no dir ",startPath);
        return;
    }

    var files=fs.readdirSync(startPath);
    for(var i=0;i<files.length;i++){
        var filename=path.join(startPath,files[i]);
        var stat = fs.lstatSync(filename);
        if (stat.isDirectory()){
            fromDir(filename,filter); //recurse
        }
        else if (filename.indexOf(filter)>=0) {
          watchStyles(filename,`${directory}/css/`)
          //console.log('-- found: ',filename);
        };
    };
};


for(let directory of directories)
{
  fromDir(`${__dirname}/${directory}/`,`${__dirname}/${directory}/stylus/`,'.styl');
}

.some{display:-webkit-box;display:-moz-box;display:-webkit-flex;display:-ms-flexbox;display:box;display:flex;-webkit-box-lines:multiple;-moz-box-lines:multiple;-o-box-lines:multiple;-webkit-flex-wrap:wrap;-ms-flex-wrap:wrap;flex-wrap:wrap}