During May 2025, Ratskevich enhanced the scalameta/scalameta repository by addressing nondeterministic outputs in semanticdb generation. He implemented deterministic sorting for TextDocument proto files, ensuring reproducible outputs across builds and reducing CI flakiness. His approach involved explicitly ordering symbols, occurrences, diagnostics, and synthetics by their ranges, leveraging Scala’s implicit ordering to achieve stable results. This work required a deep understanding of code generation, compiler plugins, and the Scala language. By resolving a subtle but impactful bug, Ratskevich improved the reliability of regression testing pipelines and contributed to more predictable build artifacts, demonstrating strong attention to detail in data processing.