node.js file that converts each .txt in a folder having wikitext to new .txt in a new folder which has plaintext

file.js

// need to iterate over each wikipedia article raw text 

var wtf_wikipedia = require("wtf_wikipedia")
fs = require('fs');
path = require('path');



 
var final_str=""
    files = fs.readdirSync('/media/saurabh/New\ Volume/wikipedia_cs_txt/xml/');

files.forEach(function(file) {

  if(path.extname(file) === ".txt") {
       //do something
 // console.log('.txt file')

var contents = fs.readFileSync('/media/saurabh/New\ Volume/wikipedia_cs_txt/xml/' + file, 'utf8');
if (  typeof(contents) === undefined || typeof(contents) ===  null )  { console.log('type err'); }
  //console.log(contents);
 var  temp_str = wtf_wikipedia.plaintext(contents)
 // console.log(temp_str) // works with console.log
//console.log(file)
//final_str = final_str + temp_str
//if (  typeof(temp_str) == undefined || typeof(temp_str) ==  null )  { console.log('type err'); }


  fs.writeFileSync("/media/saurabh/New\ Volume/wikipedia_cs_txt/final_txt/" + file , temp_str , function(err) {  if(err) {console.log('err') } })
   }

else if (path.extname(file) !== ".txt") { console.log('non .txt file') }

  



})