During June 2025, Coderaiser enhanced TypeScript AST manipulation in the babel/babel repository by adding an operator argument to the TSTypeOperator builder, enabling support for TypeScript type operators such as keyof. This work involved updating the babel-types definitions and implementing comprehensive tests to ensure correctness and maintainability. Using JavaScript and TypeScript, Coderaiser focused on code generation and testing, addressing a targeted need for more flexible type operator creation within the codebase. The depth of the contribution is reflected in the careful integration of new functionality and robust test coverage, providing measurable technical value without introducing regressions or unresolved issues.