Asynchronous fs.stat.isDirectory()

 1 function showFile() {
 2     for(var i = 0; i< files.length; i++){
 3             var itemFile = files[i];
 4             fs.stat(__dirname + itemFile, function (err, stat){    //
 5                 if (stat.isDirectory()) {
 6                     console.log(‘    ‘+i+‘    \033[36m‘ +itemFile + ‘/\033[39m‘);    //
 7                 }else{
 8                     console.log(‘    ‘+i+‘    \033[90m‘ + itemFile + ‘\033[39m‘);
 9                 } 
10             });
11         }
12     process.stdout.write(‘\033[33mEnter your choice: \033[39m‘);
13 }

TypeError: Cannot read property ‘isDirectory‘ of undefined
    at ...\index.js:46:13
    at FSReqWrap.oncomplete (fs.js:82:15)

 1 function file(i) {
 2         var filename = files[i];
 3         /**
 4          * fs.stat : 
 5          */
 6         fs.stat(__dirname + ‘/‘ + filename, function (err, stat){    //
 7             if (stat.isDirectory()) {
 8                 console.log(‘    ‘+i+‘    \033[36m‘ +filename + ‘/\033[39m‘);    //
 9             }else{
10                 console.log(‘    ‘+i+‘    \033[90m‘ + filename + ‘\033[39m‘);
11             }
12 
13             i++;
14 
15             if (i== files.length) {
16                 console.log(‘‘);
17                 process.stdout.write(‘\033[33mEnter your choice: \033[39m‘);
18                 process.stdin.resume();
19             }else{
20                 file(i);
21             }
22         });
23     }