text: const fs = require('fs');
  const file = 'weka.txt';
  
  const readStream = fs.createReadStream(file);
  let progress = 0;
  
  fs.stat(file, (err,data) =>{
     const total = data.size;
  
      readStream.on('data', (chunk) => {
          progress += chunk.length;
          console.log(Math.round((progress * 100)/total));
      });
  });
  
  readStream.on('end',() => {
      console.log('veri okunması tamamlandı..');
  });