During June 2025, Aditsinh focused on improving data modeling reliability in the facebook/pyrefly repository by addressing a NamedTuple validation bug. He enhanced the error handling logic in Rust to ensure that fields without default values cannot follow those with defaults, preventing invalid class definitions and reducing downstream defects. His targeted fix improved error reporting, making it easier for developers to identify and resolve misordered fields. Aditsinh maintained code quality by aligning changes with existing tests and continuous integration, demonstrating careful debugging and a minimal-surface-area approach. His work strengthened typing guarantees and preserved the stability of core NamedTuple utilities.