Andreas Samuelsson enhanced the BonnierNews/logger repository by delivering trace sampling improvements focused on reliability and maintainability. He introduced a dedicated isSampled helper to accurately determine trace sampling from trace flags, refactored the traceparent logic to utilize this helper, and tightened type annotations throughout the codebase. Andreas internalized the helper to prevent external export and expanded unit tests to cover edge cases, ensuring robust trace sampling decisions. His work, implemented in TypeScript and centered on backend development and refactoring, improved observability and future-proofed the tracing system. The changes reflect a thoughtful, detail-oriented approach to code quality and maintainability.