[quirogas]

Follow-up to #9226 (Fixes #9225).

Summary of Changes

1. Linter & JSDoc Fixes in src/gcp-residency.ts:
   • Removes the trailing space after process.env.K_SERVICE || that caused presubmit/lint (prettier/prettier & no-trailing-spaces) to fail in chore: update IsGoogleCloudServerless function to check for Cloud Run Worker Pools #9226.
   • Replaces the internal http://cloud/run/docs/deploy-worker-pools link with the public Google Cloud documentation URL (https://cloud.google.com/run/docs/deploy-worker-pools) and clarifies that CLOUD_RUN_WORKER_POOL applies to Cloud Run Worker Pools.
2. Unwrap AggregateError and AbortError Codes in src/index.ts:
   • Maps AbortError / aborted / request-timeout to ETIMEDOUT in getErrorCodes().
   • Uses the unwrapped error codes (Array.from(new Set(codes)).join(', ')) instead of defaulting to 'UNKNOWN' when emitting MetadataLookupWarning for AggregateError (when Promise.any rejects).
3. Unit Tests & Hermetic Test Isolation:
   • Adds delete customEnv.CLOUD_RUN_WORKER_POOL; to removeServerlessEnvironmentVariables() in test/utils/gcp-residency.ts.
   • Adds unit test coverage for CLOUD_RUN_WORKER_POOL in test/gcp-residency.test.ts.
   • Adds unit test coverage verifying AggregateError code unwrapping in MetadataLookupWarning in test/index.test.ts.

[gemini-code-assist]

Code Review

This pull request updates the GCP metadata package to improve error handling and environment detection. Specifically, it handles abort and timeout errors by mapping them to 'ETIMEDOUT', extracts nested error codes from err.error, and formats unexpected error codes more clearly in warnings. Additionally, it updates documentation and adds test coverage for the CLOUD_RUN_WORKER_POOL environment variable. No review comments were provided, so there is no additional feedback.