clean-diff.diff

 var alib = require('alib');
 var blib = require('blib');
 var clib = require('clib');
+var zlib = require('zlib');


 var fruits = [
   'apples',
   'bananas',
   'cherries',
+  'dates',
 ];

leading-comma.diff

 var alib = require('alib')
   , blib = require('blib')
-  , clib = require('clib');
+  , clib = require('clib')
+  , zlib = require('zlib');


 var fruits = [
-  'bananas'
+  'apples'
+, 'bananas'
 , 'cherries'
 , 'dates'
 ];