Is it possible to use put function for directory

[m8]

Hey, I'm trying use put function for directory transfer. However I got error.
Error: 553 Can't open that file: Is a directory

ftp.put('./', '/', err => {
    if (!err) {
      console.log("File transferred successfully!");
    }
    console.log(err);
  });

I would like to ask that how can we transfer files recursively?