I have an array link image, I user library pdfkit to convert image to PDF and then upload PDF on S3.

Here code convert image to PDF

 imageFiles.forEach((image, index) => {
        if(index === 0) {
          doc.image(image, {fit: A4_SIZE});
        } else {
          doc.addPage(image, {fit: A4_SIZE});
        }
      });

// upload S3

....................................

But I have an issue is convert is not done yet then function upload s3 has run