OpenTracing Middleware for Express.js

express-opentracing provides middleware for Express.js applications to instrument incoming HTTP requests using the OpenTracing API. This allows developers to integrate distributed tracing into their Express routes, creating spans for requests and associating them with a configured OpenTracing-compatible tracer. The package is currently at version 0.1.1 and appears to be unmaintained, with its last commit occurring several years ago. Crucially, the underlying OpenTracing project itself has been officially deprecated and archived since 2019, having merged with OpenCensus to form OpenTelemetry. OpenTelemetry is now the recommended, actively developed standard for comprehensive observability, encompassing traces, metrics, and logs. Users are strongly advised to migrate from OpenTracing-based solutions to OpenTelemetry for ongoing support, features, and security.