client-marketplace-entitlement-service: GetEntitlementsCommand fails with TypeError: Unions must have exactly one non-null member. Keys EntitlementValueType,IntegerValue were not null

Describe the bug

client-marketplace-entitlement-service: GetEntitlementsCommand fails with TypeError: Unions must have exactly one non-null member. Keys EntitlementValueType,IntegerValue were not null

Your environment

• Linux
• node 14
• typescript 4.4.4

SDK version number

@aws-sdk/client-marketplace-entitlement-service@3.41.0

Is the issue in the browser/Node.js/ReactNative?

Node.js

Details of the browser/Node.js/ReactNative version

Paste output of npx envinfo --browsers or node -v or react-native -v

node -v
v14.18.0

Steps to reproduce

Edit the code to add a real productCode and customerIdentifier, then run with node.

const aws = require('@aws-sdk/client-marketplace-entitlement-service');

const marketplaceEntitlementServiceClient =
  new aws.MarketplaceEntitlementServiceClient({
    region: 'us-east-1',
  });

const productCode = '<code>';
const customerIdentifier = '<id>';
(async () => {
  try {
    const out = await marketplaceEntitlementServiceClient.send(
      new aws.GetEntitlementsCommand({
        ProductCode: productCode,
        Filter: {
          CUSTOMER_IDENTIFIER: [customerIdentifier],
        },
      }));
    console.log(out);
  } catch (e) {
    console.log(e);
  }
})();

Observed behavior

TypeError: Unions must have exactly one non-null member. Keys EntitlementValueType,IntegerValue were not null.
    at Object.expectUnion (/app/node_modules/@aws-sdk/client-marketplace-entitlement-service/node_modules/@aws-sdk/smithy-client/dist-cjs/parse-utils.js:122:15)
    at deserializeAws_json1_1Entitlement (/app/node_modules/@aws-sdk/client-marketplace-entitlement-service/dist-cjs/protocols/Aws_json1_1.js:152:70)
    at /app/node_modules/@aws-sdk/client-marketplace-entitlement-service/dist-cjs/protocols/Aws_json1_1.js:163:16
    at Array.map (<anonymous>)
    at deserializeAws_json1_1EntitlementList (/app/node_modules/@aws-sdk/client-marketplace-entitlement-service/dist-cjs/protocols/Aws_json1_1.js:159:10)
    at deserializeAws_json1_1GetEntitlementsResult (/app/node_modules/@aws-sdk/client-marketplace-entitlement-service/dist-cjs/protocols/Aws_json1_1.js:184:15)
    at Object.deserializeAws_json1_1GetEntitlementsCommand (/app/node_modules/@aws-sdk/client-marketplace-entitlement-service/dist-cjs/protocols/Aws_json1_1.js:22:16)
    at processTicksAndRejections (internal/process/task_queues.js:95:5)
    at async /app/node_modules/@aws-sdk/client-marketplace-entitlement-service/node_modules/@aws-sdk/middleware-serde/dist-cjs/deserializerMiddleware.js:6:20
    at async /app/node_modules/@aws-sdk/client-marketplace-entitlement-service/node_modules/@aws-sdk/middleware-signing/dist-cjs/middleware.js:11:20 {
  '$metadata': { attempts: 1, totalRetryDelay: 0 }
}                      

Expected behavior

Return an object containing the Entitlements.

Additional context

The commandline client aws marketplace-entitlement get-entitlements --product-code <code> --filter CUSTOMER_IDENTIFIER=<id> succeeds with the same AWS credentials and same product code and customer id. It prints:

{
    "Entitlements": [
        {
            "ProductCode": "<code>",
            "Dimension": "free_trial",
            "CustomerIdentifier": "<id>",
            "Value": {
                "IntegerValue": 1
            },
            "ExpirationDate": "2021-12-15T15:23:20.371000-06:00"
        }
    ]
}

By adding log output to parse_utils.js, I see that prior to the call to expectUnion(), the data is:

{
  CustomerIdentifier: '<id>',
  Dimension: 'free_trial',
  ExpirationDate: 1639603400.371,
  ProductCode: '<code>',
  Value: { EntitlementValueType: 'int', IntegerValue: 1 }
}

I also asked this on same question on StackOverflow, but at this point it seems like a bug.

[pmahoney]

I’ve narrowed it down:

The code example fails with @aws-sdk/client-marketplace-entitlement-service@3.31.0 The code example works with @aws-sdk/client-marketplace-entitlement-service@3.30.0

[pmahoney]

The code example works with (at least) @aws-sdk/client-marketplace-entitlement-service@3.6.1