Sam Holmes developed and integrated a new cleaners benchmark case into the moltar/typescript-runtime-type-benchmarks repository, expanding the suite’s ability to compare runtime type validation libraries. He defined a type schema using the cleaners library and incorporated it into the benchmarking framework, enabling direct performance comparisons with peer libraries. Working primarily in TypeScript, Sam focused on schema definition, integration testing, and cross-library evaluation to provide actionable performance data. His contribution established a foundation for ongoing benchmarking expansion, supporting data-driven library selection and optimization. The work demonstrated depth in benchmarking methodology and careful integration within a version-controlled, collaborative TypeScript codebase.