@watchlog/apm-node/lib/errorHandler.js

A lightweight APM (Application Performance Monitoring) middleware for Node.js to monitor request durations, error traces, and memory usage — designed to integrate with Watchlog Agent.

function errorMiddleware(options = {}) {
  return function (err, req, res, next) {
    if (typeof next === 'function') {
      next(err);
    }
  };
}

module.exports = errorMiddleware;