code: function computeFinalBuffer(image, thumbnail, exifData, orientation) {
    exifData['0th'][piexif.ImageIFD.Orientation] = 1
    if (typeof exifData['Exif'][piexif.ExifIFD.PixelXDimension] !== 'undefined') {
      exifData['Exif'][piexif.ExifIFD.PixelXDimension] = image.width
    }
    if (typeof exifData['Exif'][piexif.ExifIFD.PixelYDimension] !== 'undefined') {
      exifData['Exif'][piexif.ExifIFD.PixelYDimension] = image.height
    }
    if (thumbnail.buffer) {
      exifData['thumbnail'] = thumbnail.buffer.toString('binary')
    }
    const exifBytes = piexif.dump(exifData)
    const updatedBuffer = Buffer.from(piexif.insert(exifBytes, image.buffer.toString('binary')), 'binary')
    const updatedDimensions = {
      height: image.height,
      width: image.width,
    }
    return Promise.resolve({updatedBuffer, orientation, updatedDimensions})
  }
docs: Compute the final buffer by updating the original EXIF data and linking it to the rotated buffer