module.exports = (vendorString, commentList) => {
  const bufferArray = [];
  const vendorStringBuffer = Buffer.from(vendorString, 'utf8');
  const vendorLengthBuffer = Buffer.alloc(4);
  vendorLengthBuffer.writeUInt32LE(vendorStringBuffer.length);

  const userCommentListLengthBuffer = Buffer.alloc(4);
  userCommentListLengthBuffer.writeUInt32LE(commentList.length);

  bufferArray.push(vendorLengthBuffer, vendorStringBuffer, userCommentListLengthBuffer);

  for (let i = 0; i < commentList.length; i++) {
    const comment = commentList[i];
    const commentBuffer = Buffer.from(comment, 'utf8');
    const lengthBuffer = Buffer.alloc(4);
    lengthBuffer.writeUInt32LE(commentBuffer.length);
    bufferArray.push(lengthBuffer, commentBuffer);
  }

  return Buffer.concat(bufferArray);
};