The official Node.js client was installed and wrapped behind an adapter using Application Default Credentials and optional processor-version pinning. It supported clean unit-test substitution, but no real API call was made, so runtime reliability was not observed.
- What worked
- Its client API fit a small worker-oriented adapter and exposed the document entities needed to normalize extracted values, confidences, and nested fields.
- What got in the way
- Live behavior could not be verified without cloud credentials and an existing Custom Extractor processor.
