{"id":11361,"library":"moo-server","title":"moo-server (MooTools for Node.js)","description":"moo-server is a historical JavaScript package designed to bring some of the utilities and patterns from the MooTools client-side framework to the server-side Node.js environment. Released with a current stable version of 1.3.0, it targets extremely old Node.js versions (specifically, Node.js >v0.4.10, which was current around 2011, predating Node.js v1.0 by several years). This package is considered abandoned, with no active maintenance or releases for over a decade. Its primary differentiator was providing a familiar API for developers accustomed to MooTools for early Node.js projects, aiming to bridge client-side habits with server-side logic during a nascent period of Node.js development. It does not follow modern JavaScript module standards (ESM) and relies heavily on CommonJS patterns prevalent in early Node.js. It is not compatible with modern Node.js versions or contemporary web development practices and should not be used in any current development.","status":"abandoned","version":"1.3.0","language":"javascript","source_language":"en","source_url":null,"tags":["javascript"],"install":[{"cmd":"npm install moo-server","lang":"bash","label":"npm"},{"cmd":"yarn add moo-server","lang":"bash","label":"yarn"},{"cmd":"pnpm add moo-server","lang":"bash","label":"pnpm"}],"dependencies":[],"imports":[{"note":"This package strictly uses CommonJS `require()` syntax. ESM imports are not supported and will cause syntax errors.","wrong":"import mooServer from 'moo-server';","symbol":"mooServer","correct":"const mooServer = require('moo-server');"},{"note":"It's highly probable the package exports a single object containing all its utilities, rather than named exports, typical of older CommonJS modules.","wrong":"import { someMethod } from 'moo-server';","symbol":"MooServerUtilities","correct":"const MooServerUtilities = require('moo-server');\n// Access utilities like MooServerUtilities.someMethod()"},{"note":"Some extremely old libraries, including parts of MooTools, would augment global objects or prototypes as a side effect of `require()`. There might not be a direct return value from the `require()` call itself if its primary function is global side-effects.","wrong":"import 'moo-server';","symbol":"GlobalAugmentation","correct":"require('moo-server');\n// Globals or prototypes might be augmented after this line"}],"quickstart":{"code":"// This example is for historical context only and requires an extremely old Node.js environment\n// (specifically Node.js v0.4.10 to ~v0.6.x) to function correctly, if at all. \n// It is not recommended for modern development.\n\nconst http = require('http');\nconst mooServer = require('moo-server'); // Assuming it returns an object of utilities\n\n// In an actual scenario from its era, moo-server might extend prototypes or provide utilities.\n// This is a hypothetical usage pattern demonstrating CommonJS and old Node.js.\n// For instance, MooTools heavily extended Array.prototype, Function.prototype, etc.\n// A server-side version might offer similar extensions or standalone utilities.\n\n// Hypothetical utility provided by moo-server (purely illustrative)\nif (mooServer && typeof mooServer.capitalize === 'function') {\n  console.log(\"MooServer loaded successfully.\");\n  console.log(\"Example utility call: \", mooServer.capitalize(\"hello world\"));\n} else {\n  console.log(\"MooServer might have augmented globals or simply loaded without a direct export on this (old) Node.js version.\");\n}\n\nconst server = http.createServer(function (req, res) {\n  res.writeHead(200, {'Content-Type': 'text/plain'});\n  res.end('Hello from moo-server era Node.js!\\n');\n});\n\nserver.listen(3000, '127.0.0.1');\nconsole.log('Server running at http://127.0.0.1:3000/');\nconsole.log('To run this, you would need to use a Node.js version manager (like nvm) to install an old Node.js version, e.g., v0.6.0.');\n","lang":"javascript","description":"Demonstrates how to import and hypothetically use the `moo-server` package with CommonJS in an extremely old Node.js environment, showcasing its historical context and incompatibility with modern systems."},"warnings":[{"fix":"Do not use this package in any new or existing project. Migrate any legacy code away from it to actively maintained solutions.","message":"This package is entirely incompatible with modern Node.js versions (e.g., v12+). It was developed for Node.js v0.4.10 and earlier, making it highly unlikely to run without severe errors or crashing on newer runtimes.","severity":"breaking","affected_versions":"all"},{"fix":"This package cannot be made compatible with ESM. Avoid using it; if strictly necessary for legacy reasons, ensure your project exclusively uses CommonJS and an ancient Node.js runtime.","message":"The `moo-server` package uses CommonJS `require()` exclusively. It does not support ES Modules (`import/export`) syntax, and attempting to use it in an ESM context will result in syntax errors.","severity":"breaking","affected_versions":"all"},{"fix":"Immediately cease use of this package. There is no fix for its security posture short of complete replacement with a modern, secure library.","message":"This package is completely abandoned and has not been updated for over a decade. It likely contains numerous unpatched security vulnerabilities, making it extremely risky for use in any production or sensitive environment.","severity":"gotcha","affected_versions":"all"},{"fix":"Avoid prototype pollution by not using this package. If forced to use it, isolate its usage and be aware of potential global side-effects, which are considered bad practice in modern JavaScript.","message":"Like many libraries from its era (including client-side MooTools), `moo-server` may aggressively extend built-in JavaScript prototypes (e.g., `Object.prototype`, `Array.prototype`), leading to unexpected behavior, conflicts with other libraries, and difficult-to-debug issues.","severity":"gotcha","affected_versions":"all"},{"fix":"Migrate to a modern, actively maintained library with robust TypeScript support.","message":"There is no TypeScript support (type definitions) available for `moo-server`. Using it in a TypeScript project would require manually declaring its types as `any` or creating custom declaration files, which is not recommended given its abandonment and insecurity.","severity":"gotcha","affected_versions":"all"}],"env_vars":null,"last_verified":"2026-04-19T00:00:00.000Z","next_check":"2026-07-18T00:00:00.000Z","problems":[{"fix":"This package is CommonJS-only. Either revert your project to CommonJS (remove `\"type\": \"module\"`, use `.js` files), or, preferably, migrate to a modern library that supports ESM.","cause":"Attempting to use `require()` in a JavaScript file that is treated as an ES module (e.g., due to `\"type\": \"module\"` in `package.json` or a `.mjs` file extension).","error":"ReferenceError: require is not defined in ES module scope"},{"fix":"This error indicates `moo-server` is either not loaded correctly or its prototype extensions are not compatible with your Node.js runtime. This package is abandoned and incompatible with modern systems; replacement is the only viable fix.","cause":"A utility method expected from `moo-server` (which might augment prototypes) is not found, typically because the package failed to load or the Node.js version is too new to support its internal mechanisms.","error":"TypeError: Object.prototype.someMethod is not a function (or similar prototype-related error)"},{"fix":"Verify the package exists on npm (it may have been unpublished or deprecated). Even if found, installation on modern systems is problematic. Do not attempt to use this package; it is fundamentally unsupported.","cause":"The package failed to install correctly, or npm/yarn is unable to resolve it from the registry due to its age, deprecated status, or incompatibility with modern package managers.","error":"Error: Cannot find module 'moo-server'"},{"fix":"This package uses very old JavaScript syntax and APIs. It is fundamentally incompatible with modern Node.js. Downgrading Node.js is not recommended for security reasons; replace the package with a contemporary alternative.","cause":"Running the `moo-server` package or code relying on it in a modern Node.js environment, where its ancient JavaScript syntax (e.g., old keywords, lack of strict mode compliance) is no longer valid or conflicts with newer language features.","error":"SyntaxError: Unexpected token '.' (or similar low-level JavaScript syntax error)"}],"ecosystem":"npm"}