Developed a cross-browser stack trace enhancement for the pmndrs/zustand repository, focusing on improving error visibility and debugging efficiency in real-world browser environments. The work centered on updating the findCallerName utility to reliably parse stack traces from V8 (Chrome/Edge), Firefox, and Safari by introducing a regex parsing fallback that first attempts V8-style frames, then Gecko or JSC formats. To optimize performance and maintainability, stack parsing regex patterns were moved to module-level constants, preventing unnecessary recompilation. Comprehensive test coverage was added by mocking Error.stack to validate Gecko stack formats and devtools payloads, utilizing TypeScript, front end development, and testing skills.