list all files in a directory recursively

files.js

// credits - https://www.codexpedia.com/node-js/node-js-getting-files-from-a-directory-including-sub-directories/


var fs = require('fs');
var path = require('path');
 
// Return a list of files of the specified fileTypes in the provided dir, 
// with the file path relative to the given dir
// dir: path of the directory you want to search the files for
// fileTypes: array of file types you are search files, ex: ['.txt', '.jpg']
function getFilesFromDir(dir, fileTypes) {
  var filesToReturn = [];
  function walkDir(currentPath) {
    var files = fs.readdirSync(currentPath);
    for (var i in files) {
      var curFile = path.join(currentPath, files[i]);      
      if (fs.statSync(curFile).isFile() && fileTypes.indexOf(path.extname(curFile)) != -1) {
        filesToReturn.push(curFile.replace(dir, ''));
      } else if (fs.statSync(curFile).isDirectory()) {
       walkDir(curFile);
      }
    }
  };
  walkDir(dir);
  return filesToReturn; 
}
 
//print the txt files in the current directory
getFilesFromDir("./", [".txt"]).map(console.log);