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<title>npm</title>
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<div class="title">
npm command-line interface
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<section id="content">
<header class="title">
<h1 id="npm">npm</h1>
<span class="description">javascript package manager</span>
</header>

<section id="table_of_contents">
<h2 id="table-of-contents">Table of contents</h2>
<div id="_table_of_contents"><ul><li><a href="#synopsis">Synopsis</a></li><li><a href="#version">Version</a></li><li><a href="#description">Description</a></li><li><a href="#important">Important</a></li><li><a href="#introduction">Introduction</a></li><li><a href="#dependencies">Dependencies</a></li><li><a href="#directories">Directories</a></li><li><a href="#developer-usage">Developer Usage</a></li><ul><li><a href="#configuration">Configuration</a></li></ul><li><a href="#contributions">Contributions</a></li><li><a href="#bugs">Bugs</a></li><li><a href="#feature-requests">Feature Requests</a></li><li><a href="#see-also">See Also</a></li></ul></div>
</section>

<div id="_content"><h3 id="synopsis">Synopsis</h3>
<pre lang="bash"><code>npm &lt;command&gt; [args]
</code></pre>
<h3 id="version">Version</h3>
<p>8.1.2</p>
<h3 id="description">Description</h3>
<p>npm is the package manager for the Node JavaScript platform.  It puts
modules in place so that node can find them, and manages dependency
conflicts intelligently.</p>
<p>It is extremely configurable to support a variety of use cases.  Most
commonly, you use it to publish, discover, install, and develop node
programs.</p>
<p>Run <code>npm help</code> to get a list of available commands.</p>
<h3 id="important">Important</h3>
<p>npm comes preconfigured to use npm’s public registry at
<a href="https://registry.npmjs.org">https://registry.npmjs.org</a> by default. Use of the npm public registry is
subject to terms of use available at
<a href="https://docs.npmjs.com/policies/terms">https://docs.npmjs.com/policies/terms</a>.</p>
<p>You can configure npm to use any compatible registry you like, and even
run your own registry. Use of someone else’s registry is governed by
their terms of use.</p>
<h3 id="introduction">Introduction</h3>
<p>You probably got npm because you want to install stuff.</p>
<p>The very first thing you will most likely want to run in any node
program is <code>npm install</code> to install its dependencies.</p>
<p>You can also run <code>npm install blerg</code> to install the latest version of
“blerg”.  Check out <a href="../commands/npm-install.html"><code>npm install</code></a> for more
info.  It can do a lot of stuff.</p>
<p>Use the <code>npm search</code> command to show everything that’s available in the
public registry.  Use <code>npm ls</code> to show everything you’ve installed.</p>
<h3 id="dependencies">Dependencies</h3>
<p>If a package lists a dependency using a git URL, npm will install that
dependency using the <a href="https://github.com/git-guides/install-git"><code>git</code></a>
command and will generate an error if it is not installed.</p>
<p>If one of the packages npm tries to install is a native node module and
requires compiling of C++ Code, npm will use
<a href="https://github.com/nodejs/node-gyp">node-gyp</a> for that task.
For a Unix system, <a href="https://github.com/nodejs/node-gyp">node-gyp</a>
needs Python, make and a buildchain like GCC. On Windows,
Python and Microsoft Visual Studio C++ are needed. For more information
visit <a href="https://github.com/nodejs/node-gyp">the node-gyp repository</a> and
the <a href="https://github.com/nodejs/node-gyp/wiki">node-gyp Wiki</a>.</p>
<h3 id="directories">Directories</h3>
<p>See <a href="../configuring-npm/folders.html"><code>folders</code></a> to learn about where npm puts
stuff.</p>
<p>In particular, npm has two modes of operation:</p>
<ul>
<li>local mode:
npm installs packages into the current project directory, which
defaults to the current working directory.  Packages install to
<code>./node_modules</code>, and bins to <code>./node_modules/.bin</code>.</li>
<li>global mode:
npm installs packages into the install prefix at
<code>$npm_config_prefix/lib/node_modules</code> and bins to
<code>$npm_config_prefix/bin</code>.</li>
</ul>
<p>Local mode is the default.  Use <code>-g</code> or <code>--global</code> on any command to
run in global mode instead.</p>
<h3 id="developer-usage">Developer Usage</h3>
<p>If you’re using npm to develop and publish your code, check out the
following help topics:</p>
<ul>
<li>json:
Make a package.json file.  See
<a href="../configuring-npm/package-json.html"><code>package.json</code></a>.</li>
<li>link:
Links your current working code into Node’s path, so that you don’t
have to reinstall every time you make a change.  Use <a href="../commands/npm-link.html"><code>npm link</code></a> to do this.</li>
<li>install:
It’s a good idea to install things if you don’t need the symbolic
link.  Especially, installing other peoples code from the registry is
done via <a href="../commands/npm-install.html"><code>npm install</code></a></li>
<li>adduser:
Create an account or log in.  When you do this, npm will store
credentials in the user config file config file.</li>
<li>publish:
Use the <a href="../commands/npm-publish.html"><code>npm publish</code></a> command to upload your
code to the registry.</li>
</ul>
<h4 id="configuration">Configuration</h4>
<p>npm is extremely configurable.  It reads its configuration options from
5 places.</p>
<ul>
<li>Command line switches:
Set a config with <code>--key val</code>.  All keys take a value, even if they
are booleans (the config parser doesn’t know what the options are at
the time of parsing).  If you do not provide a value (<code>--key</code>) then
the option is set to boolean <code>true</code>.</li>
<li>Environment Variables:
Set any config by prefixing the name in an environment variable with
<code>npm_config_</code>.  For example, <code>export npm_config_key=val</code>.</li>
<li>User Configs:
The file at <code>$HOME/.npmrc</code> is an ini-formatted list of configs.  If
present, it is parsed.  If the <code>userconfig</code> option is set in the cli
or env, that file will be used instead.</li>
<li>Global Configs:
The file found at <code>./etc/npmrc</code> (relative to the global prefix will be
parsed if it is found.  See <a href="../commands/npm-prefix.html"><code>npm prefix</code></a> for
more info on the global prefix.  If the <code>globalconfig</code> option is set
in the cli, env, or user config, then that file is parsed instead.</li>
<li>Defaults:
npm’s default configuration options are defined in
lib/utils/config-defs.js.  These must not be changed.</li>
</ul>
<p>See <a href="../using-npm/config.html"><code>config</code></a> for much much more information.</p>
<h3 id="contributions">Contributions</h3>
<p>Patches welcome!</p>
<p>If you would like to help, but don’t know what to work on, read the
<a href="https://github.com/npm/cli/blob/latest/CONTRIBUTING.md">contributing
guidelines</a> and
check the issues list.</p>
<h3 id="bugs">Bugs</h3>
<p>When you find issues, please report them:
<a href="https://github.com/npm/cli/issues">https://github.com/npm/cli/issues</a></p>
<p>Please be sure to follow the template and bug reporting guidelines.</p>
<h3 id="feature-requests">Feature Requests</h3>
<p>Discuss new feature ideas on our discussion forum:</p>
<ul>
<li><a href="https://github.com/npm/feedback">https://github.com/npm/feedback</a></li>
</ul>
<p>Or suggest formal RFC proposals:</p>
<ul>
<li><a href="https://github.com/npm/rfcs">https://github.com/npm/rfcs</a></li>
</ul>
<h3 id="see-also">See Also</h3>
<ul>
<li><a href="../commands/npm-help.html">npm help</a></li>
<li><a href="../configuring-npm/package-json.html">package.json</a></li>
<li><a href="../configuring-npm/npmrc.html">npmrc</a></li>
<li><a href="../commands/npm-config.html">npm config</a></li>
<li><a href="../commands/npm-install.html">npm install</a></li>
<li><a href="../commands/npm-prefix.html">npm prefix</a></li>
<li><a href="../commands/npm-publish.html">npm publish</a></li>
</ul>
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