async/await vs Promise

async.js

const doesKeyExist = async key => {
  try{
      const data = await S3.headObject({
        Bucket: options.bucketName,
        Key: key.replace(/^\/+/, ''),
      }).promise();
      return true;
  }
  .catch(err => err.statusCode === 404 ? false : throw err);
};

Promise.js

const doesKeyExist = key => S3.headObject({ 
  Bucket: options.bucketName, 
  Key: key.replace(/^\/+/, '') 
})
  .promise()
  .then(data => true)
  .catch(err => err.statusCode === 404 ? false : throw err);