old_contents: 
  
  var build = function(opt){
  
  	var fs = require('fs');
  	var util = require('util');
  	var fmt = util.format;
  	var recbuild_t = require('aureooms-node-recursive-build');
  	var UglifyJS = require('uglify-js');
  	var babel = require('babel-core');
  	var extend = require('node.extend');
  
  	var dflt = {
  		name : undefined,
  		src  : undefined,
  		out  : undefined,
  		base : 0,
  		rec  : false,
  		flat : true,
  		babel: false
  	};
  
  	opt = extend({}, dflt, opt);
  
  	var namespace = opt.name.replace( '-' , '' ) ;
  
  	var recbuild = recbuild_t({
  		name : namespace ,
  		rec  : opt.rec ,
  		flat : opt.flat
  	});
  
  	if (!fs.existsSync(opt.out)) fs.mkdirSync(opt.out);
  
  	var fd,
  	    base = fmt('%s/%s%%s', opt.out, opt.name),
  	    concat = fmt(base, '.js'),
  	    min = fmt(base, '.min.js'),
  	    map = fmt(base, '.js.map');
  
  	var fhandle = function(f) {
  		var raw = fs.readFileSync(f);
  		fs.writeSync(fd, raw.toString());
  		fs.writeSync(fd, '\n');
  	};
  
  	var rhandle = function(raw) {
  		fs.writeSync(fd, raw);
  		fs.writeSync(fd, '\n');
  	};
  
  	fd = fs.openSync(concat, 'w');
  	recbuild(opt.src, namespace, -opt.base, fhandle, rhandle);
  	fs.closeSync(fd);
  
  	if ( opt.babel ) {
  
  		var es5 = babel.transformFileSync( concat ) ;
  
  		fd = fs.openSync( concat , 'w' ) ;
  
  		fs.writeSync( fd , es5.code ) ;
  
  		fs.closeSync( fd ) ;
  
  	}
  
  	var minified = UglifyJS.minify(concat, { outSourceMap: map });
  
  	fs.writeFileSync(min, minified.code);
  	fs.writeFileSync(map, minified.map);
  
  };
  
  exports.build = build;
  
new_contents: 
  
  var build = function(opt){
  
  	var fs = require('fs');
  	var util = require('util');
  	var fmt = util.format;
  	var recbuild_t = require('aureooms-node-recursive-build');
  	var UglifyJS = require('uglify-js');
  	var babel = require('babel-core');
  	var extend = require('node.extend');
  	var path = require('path');
  
  	var dflt = {
  		name : undefined,
  		src  : undefined,
  		out  : undefined,
  		base : 0,
  		rec  : false,
  		flat : true,
  		babel: false
  	};
  
  	opt = extend({}, dflt, opt);
  
  	var namespace = opt.name.replace( '-' , '' ) ;
  
  	var recbuild = recbuild_t({
  		name : namespace ,
  		rec  : opt.rec ,
  		flat : opt.flat
  	});
  
  	if (!fs.existsSync(opt.out)) fs.mkdirSync(opt.out);
  
  	var fd,
  	    base = fmt('%s/%s%%s', opt.out, opt.name),
  	    concat = path.normalize(fmt(base, '.js')),
  	    min = path.normalize(fmt(base, '.min.js')),
  	    map = path.normalize(fmt(base, '.js.map'));
  
  	var fhandle = function(f) {
  		var raw = fs.readFileSync(f);
  		fs.writeSync(fd, raw.toString());
  		fs.writeSync(fd, '\n');
  	};
  
  	var rhandle = function(raw) {
  		fs.writeSync(fd, raw);
  		fs.writeSync(fd, '\n');
  	};
  
  	fd = fs.openSync(concat, 'w');
  	recbuild(opt.src, namespace, -opt.base, fhandle, rhandle);
  	fs.closeSync(fd);
  
  	if ( opt.babel ) {
  
  		var es5 = babel.transformFileSync( concat ) ;
  
  		fd = fs.openSync( concat , 'w' ) ;
  
  		fs.writeSync( fd , es5.code ) ;
  
  		fs.closeSync( fd ) ;
  
  	}
  
  	var minified = UglifyJS.minify(concat, { outSourceMap: map });
  
  	fs.writeFileSync(min, minified.code);
  	fs.writeFileSync(map, minified.map);
  
  };
  
  exports.build = build;
  
subject: normalize paths when building