PACKAGE · PACKAGE MANAGER

npm

a package manager for JavaScript

WEEKLY DOWNLOADS 6.6M
STARS 9.8K
FORKS 4.4K
OPEN ISSUES 622
GZIP SIZE 2.6 kB
UNPACKED SIZE 12.0 MB
LAST UPDATED 3mo ago
DOWNLOAD TRENDS

npm downloads — last 12 months

Download trends for npm1 download series from Jun 2025 to May 2026. Use left and right arrow keys to inspect monthly values.014.4M28.8M43.2M57.6MJun 2025SepDecMarMay 2026
npm
ABOUT NPM

npm is the default package manager for Node.js, designed to handle the installation, sharing, and management of JavaScript packages. It addresses the complexity of managing project dependencies, enabling developers to easily discover, install, and distribute reusable code modules.

The primary audience for npm includes all JavaScript developers working on Node.js projects, from individual contributors to large teams. Its design philosophy centers on simplicity, reliability, and a vast ecosystem of open-source modules, making it the go-to tool for bootstrapping and maintaining JavaScript projects.

Key mechanisms within npm include the `package.json` file for defining project metadata and dependencies, and the `npm install` command for resolving and fetching packages from the public npm registry. It also supports versioning via semantic versioning (SemVer) and provides commands like `npm publish` for sharing code.

npm seamlessly integrates into virtually any JavaScript development workflow. It is fundamental for projects using Node.js for backend development, frontend build tools like Webpack and Rollup, and testing frameworks such as Jest. Its command-line interface (CLI) is a cornerstone of daily development tasks.

With a substantial weekly download count of 13.2 million, npm is a mature and robust ecosystem. The CLI itself has a relatively small gzipped bundle size of 2.6 kB, indicating efficiency. However, the unpacked size can reach 12.0 MB, hinting at the extensive dependency trees it manages.

One significant consideration is the potential for dependency hell, where complex interdependencies can lead to version conflicts or large installation sizes. Developers should also be mindful of the security implications of installing packages from the public registry and utilize tools like `npm audit` to mitigate risks.

WHEN TO USE
  • When initializing a new Node.js project and needing to manage its dependencies via `npm init`.
  • When installing external libraries or frameworks using `npm install <package-name>`.
  • When publishing your own reusable JavaScript modules to the public npm registry using `npm publish`.
  • When managing project configurations and dependency versions in `package.json`.
  • When auditing project dependencies for security vulnerabilities with `npm audit`.
  • When executing project scripts defined in the `scripts` section of `package.json` using `npm run <script-name>`.
  • When working with version ranges and semantic versioning to control dependency updates.
WHEN NOT TO USE
  • If your project consists solely of a single, self-contained JavaScript file with no external dependencies, manual inclusion of scripts might suffice.
  • If you are developing exclusively within a browser environment and do not require server-side Node.js execution or server-side tooling, a dedicated browser module bundler might be more appropriate.
  • If managing extremely small, isolated code snippets where manual copying of files is simpler than initializing a project and managing packages.
  • If you need to enforce extremely strict, immutable dependency trees without any possibility of updates, you may need to explore alternative locking mechanisms or private registry configurations.
  • If your primary focus is on application state management within a frontend framework, component libraries offer more specialized solutions than a general package manager.

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COMPARISONS 3
npm vs bun ★ 92.9K · 1.1M/wk npm vs pnpm ★ 35.4K · 52.2M/wk npm vs yarn ★ 41.5K · 4.1M/wk