Worked on enhancing configuration validation and error messaging for the powersync-ja/powersync-service repository, focusing on backend development and robust error handling. Developed improved parsing logic for YAML and JSON configurations using TypeScript and YAML, surfacing detailed validation errors directly in error messages to aid debugging and reduce resolution time. Expanded automated test coverage to include edge cases such as invalid YAML and !env tags, ensuring that configuration issues are detected and reported reliably. Updated error reporting formats and documentation to support safer deployments, contributing to greater resilience and reliability in PowerSync’s configuration handling and overall service stability.