Missing properties in S3 thrown errors

[Inqnuam]

Checkboxes for prior research

• I've gone through Developer Guide and API reference
• I've checked AWS Forums and StackOverflow.
• I've searched for previous similar issues and didn't find any solution.

Describe the bug

Since v3.931.0 S3 Client's thrown errors not always include Code and some other properties

Regression Issue

• Select this option if this issue appears to be a regression.

SDK version number

@aws-sdk/client-s3@3.931.0

Which JavaScript Runtime is this issue in?

Node.js

Details of the browser/Node.js/ReactNative version

v22.21.1

Reproduction Steps

import { NoSuchUpload, S3 } from "@aws-sdk/client-s3";

const client = new S3();

try {
  await client.abortMultipartUpload({ Bucket: "my-bucket", Key: "my-key", UploadId: "this is a valid upload id" });
  await client.abortMultipartUpload({ Bucket: "my-bucket", Key: "my-key", UploadId: "invalid id" });
} catch (error: any) {
  // "Code" is undefined
  if (error.Code == "NoSuchUpload") {
    console.log(error.UploadId);
  }

  // well ...
  if (error instanceof NoSuchUpload) {
    // UploadId is undefined too!
    console.log(error.UploadId);
  }
}

Observed Behavior

error instance is missing important informations

Expected Behavior

For this example, error should include at least UploadId as before

Possible Solution

No response

Additional Information/Context

No response

[kuhe]

Hi, I confirmed that this is a regression in behavior for error creation.

The S3 service model from which we generate the client has no modeled fields on the NoSuchUpload exception data type. This, along with an internal deserialization methodology update, caused unmodeled fields to no longer be assigned to the returned error object.

For backwards compatibility, the addition of unmodeled fields onto thrown errors will be restored in #7504, expected to be released later today.

[kuhe]

The fix is available in https://github.com/aws/aws-sdk-js-v3/releases/tag/v3.932.0.

[Inqnuam]

@kuhe Confirmed, everything’s working now. Appreciate it!