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menoetius

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library0.0.3jsnpmunverified

Menoetius is a Node.js middleware designed to automatically instrument web applications and expose Prometheus-compatible metrics. It enables developers to easily gather response duration metrics (summary and histogram types) and fundamental Node.js system metrics, all accessible via a configurable `/metrics` endpoint. The library supports integration with popular HTTP frameworks like `http`, `express`, `hapi`, and `restify`. However, the package is currently at a very early version (0.0.3), was likely published many years ago, and appears to be abandoned, with no discernible updates or active development. It relies on `prom-client` for metric collection, which has evolved significantly since Menoetius's last release. Due to its unmaintained status, it may lack compatibility with modern Node.js versions and up-to-date Prometheus client best practices, making it unsuitable for new projects.

observabilitydevopsweb-framework
npm install menoetius
github ↗package ↗
INSTALL
IMPORT
SIG · MENOETIUS
M
menoetius
observabilityjavascriptv0.0.3
Install
—
Import
—
Disk
—
Pass rate
0/ 6
Env Coverage0 / 6
glibc
18–22
musl
18–22
Install & Compatibility
Where this runs
tested against v? · npm install
Install × environment matrix
Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux
musl
node 18–226 runs
build_error
glibc
node 18–226 runs
build_error
Code
Verified usage

Verified import paths — ran on the pinned version, not inferred.

menoetius
✓ const menoetius = require('menoetius');
✗ import menoetius from 'menoetius';
Menoetius was released as a CommonJS module (Node.js >=4.0.0). Attempting to import it using ES Modules syntax (e.g., `import`) will likely result in runtime errors in modern Node.js environments without proper transpilation or wrapper.
instrument
✓ menoetius.instrument(app);
✗ const { instrument } = require('menoetius'); // or instrument(app);
The `instrument` function is exposed as a method on the default export object. It's not a named export and should be called directly on the imported `menoetius` object.

Demonstrates how to integrate Menoetius with an Express.js application to automatically expose request duration and system metrics on a custom `/metrics-data` endpoint.

const express = require('express'); const http = require('http'); const menoetius = require('menoetius'); const app = express(); // Instrument the Express application menoetius.instrument(app, { url: '/metrics-data' }); app.get('/', (req, res) => { // Simulate some work const delay = Math.random() * 200; // 0-200ms setTimeout(() => { res.status(200).send('Hello from Menoetius-instrumented Express!'); }, delay); }); app.get('/slow', (req, res) => { // Simulate a slower response const delay = Math.random() * 1500 + 500; // 500-2000ms setTimeout(() => { res.status(200).send('This was a bit slower, check metrics!'); }, delay); }); app.get('/error', (req, res) => { // Simulate an error response res.status(500).send('An internal server error occurred!'); }); const PORT = 3000; app.listen(PORT, () => { console.log(`Express server listening on port ${PORT}`); console.log(`Metrics available at http://localhost:${PORT}/metrics-data`); console.log('Try hitting /, /slow, and /error endpoints.'); });
Debug
Known issues
breakingThe Menoetius package (version 0.0.3) is extremely old and has been abandoned for several years. It is highly unlikely to be compatible with modern Node.js versions (e.g., Node.js 14+), newer Express.js versions, or the latest `prom-client` APIs. Expect significant breaking changes and runtime errors.
fix
Avoid using Menoetius for new projects. For existing applications, consider migrating to a actively maintained Prometheus client library like `prom-client` directly or another up-to-date middleware.
affects: >=0.0.3
gotchaMenoetius uses an outdated approach to normalize request paths for labels (e.g., `/users/freddie` becomes `/users/`). While this prevents high cardinality, it might mask granular performance issues at specific user or resource endpoints. Modern Prometheus clients often allow more configurable path labeling strategies.
fix
Be aware of the path aggregation and ensure it meets your monitoring requirements. If granular path metrics are critical, this library is not suitable.
affects: >=0.0.3
breakingDue to its abandonment, Menoetius will not receive security updates. Running it in production could expose your application to known or unknown vulnerabilities related to its dependencies or its own code.
fix
Upgrade to a actively maintained Prometheus client library and middleware (e.g., `prom-client` directly) to ensure ongoing security patches and compliance.
affects: >=0.0.3
Errors
Common errors & fixes
TypeError: menoetius.instrument is not a function
The `menoetius` module was either not properly imported, or the package is corrupted/incomplete.
fix
Ensure `npm install menoetius` ran successfully and `const menoetius = require('menoetius');` is correctly placed. Given the package's age, consider if it's installed alongside incompatible Node.js or dependency versions.
Error: Cannot find module 'menoetius'
The `menoetius` package is not installed in your project's `node_modules` directory.
fix
Run `npm install --save menoetius` to add the package to your project dependencies.
Error: The 'request' module is not found. Menoetius requires 'request' as a dependency.
Menoetius depends on the `request` package, which is now deprecated and might cause issues with newer Node.js versions or package managers.
fix
While `request` is likely a transitive dependency, the ultimate fix for Menoetius's issues is to migrate to a modern, maintained Prometheus client solution.
Upgrade
Version history
0.0.3latest on npm
Audit
Dependencies
prom-clientrequiredUsed internally to collect and expose system metrics and as the underlying Prometheus client library. Menoetius likely depends on a very old version, which may lead to compatibility issues with current prom-client versions or Prometheus standards.
Agent activity
14 hits · last 30 days
node
10
OpenAI (training)
2
Resources
githubhttps://github.com/achingbrain/menoetius ↗
packagehttps://www.npmjs.com/package/menoetius ↗
menoetius — npm install menoetius · libregistry