During June 2025, Aditsinh focused on improving the robustness of NamedTuple validation in the facebook/pyrefly repository. He addressed a bug where fields without default values could incorrectly follow fields with defaults, which previously led to invalid class definitions and confusing errors. By refining the validation logic and enhancing error reporting, Aditsinh enabled developers to more easily identify and resolve misordered fields, reducing debugging time and downstream defects. His work was implemented with careful attention to error handling and testing, using Rust for validation logic, and ensured that all existing tests passed, maintaining the stability and reliability of core typing utilities.