nodejs/findFiles.js at master · murat-aka/nodejs · GitHub

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 //////////////////////////////////////////////
 /*  module for exercise 6  NODE MODULES     */
 //////////////////////////////////////////////

 module.exports = function findFiles(dir,ext,callback) {

    var fs = require('fs'); // load file system module
    var pa = require('path'); // load path module

    fs.readdir(dir, function doneReading(err, arrList) { // readFile is asycronous so a call back function is passed.

       if(!err){

            arrList = arrList.filter(function (item){ // loop through filenames

                //return (pa.extname(item) === '.' + ext);

                if (pa.extname(item) === '.' + ext) { // check if the filename extension is same as the passed in extension.

                  return true;

                }else{

                  return false;

                }

            });

            return callback(err,arrList);

       }else{

            return callback(err); // early return

       }

    });

 };