text: let fs = require("fs");
  let files = ["f1.txt", "f2.txt", "f3.txt","f4.txt","f5.txt","f6.txt","f7.txt"];
  
  for(let i=0;i<7;i++){
  
      let file = fs.promises.readFile(files[i]);
      file.then(function(data){
          console.log(`File ${i+1} data: ${data.byteLength}`);
      })
  }
  