function saveFile(hapiFileStream) {
  var filePath = getFilePath();
  var fileExt = path.extname(hapiFileStream.hapi.filename);
  var fileName = generateFileName() + fileExt;
  var file = path.join(filePath.basePath, fileName);
  var fileStream = fs.createWriteStream(file);
  return new Promise(function (resolve, reject) {
    hapiFileStream.on('error', function (error) {
      reject(error);
    });
    hapiFileStream.on('end', function (error) {
      setTimeout(function () {
        console.log(fs.statSync(file));
      }, 1000);
      console.log(fs.statSync(file));
      resolve({
        'relativeBasePath': filePath.relativeBasePath,
        'relativeBaseUrl': filePath.relativeBaseUrl,
        'fileName': fileName,
        'file': file,
        'originalFileName': hapiFileStream.hapi.filename,
        'mimeType': hapiFileStream.hapi.headers['content-type'],
        'destination': filePath,
        'size': fs.statSync(file).size,
      });
    });
    hapiFileStream.pipe(fileStream);
  });
}

Stats {
  ...
  rdev:0
  size:0
  uid:0
  ...
}

Stats {
  ...
  rdev:0
  size:187
  uid:0
  ...
}