node‑gc‑profiler is a tiny Node.js module that hooks into V8’s garbage‑collector callbacks and emits a “gc” event after each collection, reporting the cycle’s start time, duration, type (Scavenge or Mark‑Sweep‑Compact), whether it was forced, and raw flag bits. It’s aimed at developers who need to monitor or benchmark GC behaviour in their Node applications across Linux, Windows and macOS.