feature(beautify) add

lib/server/beautify.js

@@ -0,0 +1,37 @@
+(function() {
+    'use strict';
+    
+    var fs              = require('fs'),
+        path            = require('path'),
+        
+        Util            = require('../util'),
+        tryRequire      = require('./tryRequire'),
+        beautify        = tryRequire('js-beautify');
+    
+    module.exports  = function(name, callback) {
+        var EXT     = ['js', 'css', 'html'],
+            ext     = path
+                .extname(name)
+                .slice(1),
+            
+            is      = ~EXT.indexOf(ext);
+            
+        if (!beautify)
+            callback(Error('Beautify not installed'));
+        else if (!is)
+            callback(Error('File should be: ' + EXT));
+        else
+            fs.readFile(name, 'utf8', function(error, data) {
+                var result;
+                
+                if (!error)
+                    error = Util.exec.try(function() {
+                        result = beautify[ext](data);
+                    });
+                    
+                
+                callback(error, result);
+            });
+    };
+    
+})();