The **opentelemetry-node-metrics** package adapts the metric types from the popular **prom-client** library so they can be used with **@opentelemetry/metrics** in Node.js applications. It provides a drop‑in implementation that lets developers collect Prometheus‑style metrics via OpenTelemetry (e.g., with a PrometheusExporter), targeting backend services that need observability without cluster support. It’s aimed at Node developers who want to integrate Prometheus‑compatible metrics into an OpenTelemetry‑based monitoring stack.