Worked on enhancing session management robustness in the 0xsequence/sequence.js repository by refactoring the signCall logic to utilize isIncrementCall, which improved code readability and maintainability. Focused on TypeScript and full stack development, the approach included adding targeted tests to ensure that signSapient correctly handles increment calls, thereby increasing test coverage and reliability for session management features. This work addressed edge-case handling and made incremental operations safer, reducing production risk and simplifying future enhancements. The changes contributed to a more robust and maintainable codebase, with an emphasis on thorough testing and clear, modular logic using modern TypeScript practices.