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

this causes a runtime error

Regression Issue

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

SDK version number

latest version of STS and nested-clients STS

Which JavaScript Runtime is this issue in?

Node.js

Details of the browser/Node.js/ReactNative version

any

Reproduction Steps

run get caller identity with STS

Observed Behavior

Error: Cannot find module '@aws-sdk/region-config-resolver'

Expected Behavior

succeeds

Possible Solution

No response

Additional Information/Context

No response