Worked on enhancing error handling within the InjectiveLabs/injective-ts repository by addressing conflicts between custom exception classes and native Error properties in TypeScript. Focused on refining the ConcreteException class, the developer removed redundant stack, name, and message property handling to eliminate TypeError risks and improve compatibility across transpilers. Regression tests were introduced to ensure stack trace preservation and correct behavior of setName and setMessage methods, safeguarding against future regressions. This work streamlined error handling logic, resulting in more predictable and maintainable code. The approach demonstrated strong skills in TypeScript, class design, error handling, and comprehensive testing practices.