fix: preserve json structure when patching within this library by duncanista · Pull Request #709 · DataDog/datadog-lambda-js

What does this PR do?

Ensures JSON structured logs are preserved when patching locally for logs injection for logs<>traces correlation

Motivation

#628 and SVLS-6441

Testing Guidelines

Unit tests and manually:

Screenshot 2026-01-22 at 5 38 33 PM (JSON log not showing the fields, but it indeed has the trace correlated) Screenshot 2026-01-22 at 5 38 38 PM

Types of Changes

  • Bug fix
  • New feature
  • Breaking change
  • Misc (docs, refactoring, dependency upgrade, etc.)

Check all that apply

  • This PR's description is comprehensive
  • This PR contains breaking changes that are documented in the description
  • This PR introduces new APIs or parameters that are documented and unlikely to change in the foreseeable future
  • This PR impacts documentation, and it has been updated (or a ticket has been logged)
  • This PR's changes are covered by the automated tests
  • This PR collects user input/sensitive content into Datadog
  • This PR passes the integration tests (ask a Datadog member to run the tests)