In the Meteor JavaScript framework, "add-ons" extend functionality for frontend reactivity, database operations, authentication, build tools, and mobile integration. 1. Understanding the Ecosystem Meteor supports two main sources of add-ons:
import fs from 'fs'; For isomorphic packages (client + server), ensure they work without DOM/Browser APIs. These are included in meteor create but can be removed: meteor add ons
| Add-on | Purpose | Remove if... | | :--- | :--- | :--- | | autopublish | Auto-publishes all data | You want security (remove in production) | | insecure | Allows client DB writes | You want security (remove in production) | | standard-minifier-js | Minifies JS | You use a custom minifier | | ecmascript | ES2015+ support | You don't need modern JS (rare) | | webapp | Serves HTML/JS/CSS | You're not building a web UI | These are included in meteor create but can
api.mainModule('client.js', 'client'); api.mainModule('server.js', 'server'); summary: 'A brief description'
meteor remove autopublish insecure meteor add accounts-password 6.1 Package Structure meteor create --package myusername:my-package cd packages/my-package 6.2 package.js Example Package.describe( name: 'myusername:my-package', version: '1.0.0', summary: 'A brief description', documentation: 'README.md' ); Package.onUse(function(api) api.versionsFrom('2.8'); api.use('ecmascript'); api.use('mongo'); // Use Mongo collections api.use('accounts-base'); // Use accounts system