During December 2024, Emera focused on enhancing Unicode reliability in the mozilla/rhino repository by addressing a critical bug in the TokenStream parser. She fixed incorrect length calculations and cursor updates when processing multibyte characters across string literals, template literals, XML literals, and multiline comments. Using Java and JavaScript, Emera implemented robust string manipulation and parser development techniques, ensuring accurate tokenization for Unicode-heavy codebases. She also expanded test coverage to validate edge cases and regression scenarios, reducing the risk of subtle parsing errors. This work improved the overall reliability and Unicode support of Rhino’s JavaScript parsing infrastructure.