express-metrics-middleware

Express middleware that automatically collects standard Prometheus metrics (HTTP request duration, request count, active connections, etc.) for Node.js applications. Version 0.1.14 is the current stable release, updated infrequently. Compared to prom-client or express-prom-bundle, this package offers a zero-configuration setup with sensible defaults and built-in TypeScript types. It is opinionated and designed for quick integration without manual metric definition, but may have limited customization options.