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2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>npm explain</h1>
<h2 id="explain-installed-packages" style="position:relative;"><a href="#explain-installed-packages" aria-label="explain installed packages permalink" class="header-link-class before"><svg aria-hidden="true" height="20" version="1.1" viewBox="0 0 16 16" width="20"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Explain installed packages</h2>
<h3 id="synopsis" style="position:relative;"><a href="#synopsis" aria-label="synopsis permalink" class="header-link-class before"><svg aria-hidden="true" height="20" version="1.1" viewBox="0 0 16 16" width="20"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Synopsis</h3>
<div class="gatsby-highlight" data-language="bash"><pre class="language-bash"><code class="language-bash"><span class="token function">npm</span> explain <span class="token operator"><</span>folder <span class="token operator">|</span> specifier<span class="token operator">></span></code></pre></div>
<h3 id="description" style="position:relative;"><a href="#description" aria-label="description permalink" class="header-link-class before"><svg aria-hidden="true" height="20" version="1.1" viewBox="0 0 16 16" width="20"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Description</h3>
<p>This command will print the chain of dependencies causing a given package
to be installed in the current project.</p>
<p>Positional arguments can be either folders within <code class="language-text">node_modules</code>, or
<code class="language-text">name@version-range</code> specifiers, which will select the dependency
relationships to explain.</p>
<p>For example, running <code class="language-text">npm explain glob</code> within npm's source tree will show:</p>
<div class="gatsby-highlight" data-language="bash"><pre class="language-bash"><code class="language-bash">glob@7.1.6
node_modules/glob
glob@<span class="token string">"^7.1.4"</span> from the root project
glob@7.1.1 dev
node_modules/tacks/node_modules/glob
glob@<span class="token string">"^7.0.5"</span> from rimraf@2.6.2
node_modules/tacks/node_modules/rimraf
rimraf@<span class="token string">"^2.6.2"</span> from tacks@1.3.0
node_modules/tacks
dev tacks@<span class="token string">"^1.3.0"</span> from the root project</code></pre></div>
<p>To explain just the package residing at a specific folder, pass that as the
argument to the command. This can be useful when trying to figure out
exactly why a given dependency is being duplicated to satisfy conflicting
version requirements within the project.</p>
<div class="gatsby-highlight" data-language="bash"><pre class="language-bash"><code class="language-bash">$ <span class="token function">npm</span> explain node_modules/nyc/node_modules/find-up
find-up@3.0.0 dev
node_modules/nyc/node_modules/find-up
find-up@<span class="token string">"^3.0.0"</span> from nyc@14.1.1
node_modules/nyc
nyc@<span class="token string">"^14.1.1"</span> from tap@14.10.8
node_modules/tap
dev tap@<span class="token string">"^14.10.8"</span> from the root project</code></pre></div>
<h3 id="configuration" style="position:relative;"><a href="#configuration" aria-label="configuration permalink" class="header-link-class before"><svg aria-hidden="true" height="20" version="1.1" viewBox="0 0 16 16" width="20"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Configuration</h3>
<h4 id="json" style="position:relative;"><a href="#json" aria-label="json permalink" class="header-link-class before"><svg aria-hidden="true" height="20" version="1.1" viewBox="0 0 16 16" width="20"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>json</h4>
<ul>
<li>Default: false</li>
<li>Type: Bolean</li>
</ul>
<p>Show information in JSON format.</p>
<h3 id="see-also" style="position:relative;"><a href="#see-also" aria-label="see also permalink" class="header-link-class before"><svg aria-hidden="true" height="20" version="1.1" viewBox="0 0 16 16" width="20"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>See Also</h3>
<ul>
<li><a href="../../cli-commands/config">npm config</a></li>
<li><a href="../../configuring-npm/npmrc">npmrc</a></li>
<li><a href="../../configuring-npm/folders">npm folders</a></li>
<li><a href="../../cli-commands/ls">npm ls</a></li>
<li><a href="../../cli-commands/install">npm install</a></li>
<li><a href="../../cli-commands/link">npm link</a></li>
<li><a href="../../cli-commands/prune">npm prune</a></li>
<li><a href="../../cli-commands/outdated">npm outdated</a></li>
<li><a href="../../cli-commands/update">npm update</a></li>
</ul></div><div class="FoundTypo__Container-sc-1e373sc-0 fMOzaj"><p><span role="img" aria-label="eyes-emoji">👀</span> Found a typo? <a href="https://github.com/npm/cli/">Let us know!</a></p><p>The current stable version of npm is <a href="https://github.com/npm/cli/">here</a>. To upgrade, run: <code class="language-text">npm install npm@latest -g</code></p><p>To report bugs or submit feature requests for the docs, or for any issues regarding the npm command line tool, please post <a href="https://github.com/npm/cli/issues">on the npm/cli GitHub project</a>.</p></div><script>
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