photofinish is a lightweight Node.js benchmarking library that lets developers quickly define and run performance tests with a simple builder‑style API. It supports both synchronous and asynchronous functions, provides configurable warm‑up and measurement cycles, and returns detailed timing results (e.g., mean time) wrapped in a `Measurement` object, making it ideal for JavaScript/TypeScript developers who need an easy‑to‑use tool for micro‑benchmarking their code.