Worked on maintaining and stabilizing the scalameta/scalameta repository, focusing on the reliability of SemanticDB’s type information. Addressed a critical issue in the toSemanticTpe function by ensuring that ClassInfoType is correctly mapped to NoType, which prevented crashes and improved the accuracy of semantic data consumed by downstream tools and IDEs. The work involved in-depth bug fixing and careful code review, prioritizing system stability over new feature development. Utilized Scala and compiler plugin expertise to enhance SemanticDB’s robustness, ultimately reducing risk for dependent tooling and continuous integration pipelines that rely on precise type conversions and semantic analysis.