Ali-oss

"ali-oss": "^6.0.0", 
https://github.com/ali-sdk/ali-oss
https://help.aliyun.com/document_detail/32068.html

• 如果存在那么返回json

const object = await client.head('ossdemo/head-meta');
console.log(object);

{
  status: 200,
  meta: {
    uid: '1',
    path: 'foo/demo.txt'
  },
  res: { ... }
}

• 如果不存在那么抛异常。

Head a not exists object
const object = await client.head('ossdemo/head-meta');
// will throw NoSuchKeyError