A bucket is a container for objects stored in OSS. Every object is contained in a bucket. This topic describes how to determine whether a bucket exists.

The following code provides an example on how to determine whether a specific bucket exists:

const OSS = require('ali-oss')
const client = new OSS({
  // The endpoint of the China (Hangzhou) region is used in this example. Specify the actual endpoint.
  region: '<Your region>'
  // Security risks may arise if you use the AccessKey pair of an Alibaba Cloud account to log on to OSS because the account has permissions on all API operations. We recommend that you use your RAM user's credentials to call API operations or perform routine operations and maintenance. To create a RAM user, log on to the RAM console.
  accessKeyId: '<Your AccessKeyId>',
  accessKeySecret: '<Your AccessKeySecret>',
});

async function bucketisExist() {
  try {
    const result = await client.getBucketInfo('<Your bucket>')
    console.log('bucketInfo: ', result.bucket)
  } catch (error) {
    // The specified bucket does not exist.
    if (error.name === 'NoSuchBucketError') {
      console.log
    } else {
      console.log(error)
    }
  }
}
bucketisExist()