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npm command-line interface
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<header class="title">
<h1 id="npm-update">npm-update</h1>
<span class="description">Update a package</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="#description">Description</a></li><li><a href="#example">Example</a></li><ul><li><a href="#caret-dependencies">Caret Dependencies</a></li><li><a href="#tilde-dependencies">Tilde Dependencies</a></li><li><a href="#caret-dependencies-below-100">Caret Dependencies below 1.0.0</a></li><li><a href="#updating-globally-installed-packages">Updating Globally-Installed Packages</a></li></ul><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 update [-g] [<pkg>...]
aliases: up, upgrade
</code></pre>
<h3 id="description">Description</h3>
<p>This command will update all the packages listed to the latest version
(specified by the <code>tag</code> config), respecting semver.</p>
<p>It will also install missing packages. As with all commands that install
packages, the <code>--dev</code> flag will cause <code>devDependencies</code> to be processed
as well.</p>
<p>If the <code>-g</code> flag is specified, this command will update globally installed
packages.</p>
<p>If no package name is specified, all packages in the specified location (global
or local) will be updated.</p>
<p>As of <code>npm@2.6.1</code>, the <code>npm update</code> will only inspect top-level packages.
Prior versions of <code>npm</code> would also recursively inspect all dependencies.
To get the old behavior, use <code>npm --depth 9999 update</code>.</p>
<p>As of <code>npm@5.0.0</code>, the <code>npm update</code> will change <code>package.json</code> to save the
new version as the minimum required dependency. To get the old behavior,
use <code>npm update --no-save</code>.</p>
<h3 id="example">Example</h3>
<p>IMPORTANT VERSION NOTE: these examples assume <code>npm@2.6.1</code> or later. For
older versions of <code>npm</code>, you must specify <code>--depth 0</code> to get the behavior
described below.</p>
<p>For the examples below, assume that the current package is <code>app</code> and it depends
on dependencies, <code>dep1</code> (<code>dep2</code>, .. etc.). The published versions of <code>dep1</code> are:</p>
<pre lang="json"><code>{
"dist-tags": { "latest": "1.2.2" },
"versions": [
"1.2.2",
"1.2.1",
"1.2.0",
"1.1.2",
"1.1.1",
"1.0.0",
"0.4.1",
"0.4.0",
"0.2.0"
]
}
</code></pre>
<h4 id="caret-dependencies">Caret Dependencies</h4>
<p>If <code>app</code>’s <code>package.json</code> contains:</p>
<pre lang="json"><code>"dependencies": {
"dep1": "^1.1.1"
}
</code></pre>
<p>Then <code>npm update</code> will install <code>dep1@1.2.2</code>, because <code>1.2.2</code> is <code>latest</code> and
<code>1.2.2</code> satisfies <code>^1.1.1</code>.</p>
<h4 id="tilde-dependencies">Tilde Dependencies</h4>
<p>However, if <code>app</code>’s <code>package.json</code> contains:</p>
<pre lang="json"><code>"dependencies": {
"dep1": "~1.1.1"
}
</code></pre>
<p>In this case, running <code>npm update</code> will install <code>dep1@1.1.2</code>. Even though the <code>latest</code>
tag points to <code>1.2.2</code>, this version does not satisfy <code>~1.1.1</code>, which is equivalent
to <code>>=1.1.1 <1.2.0</code>. So the highest-sorting version that satisfies <code>~1.1.1</code> is used,
which is <code>1.1.2</code>.</p>
<h4 id="caret-dependencies-below-100">Caret Dependencies below 1.0.0</h4>
<p>Suppose <code>app</code> has a caret dependency on a version below <code>1.0.0</code>, for example:</p>
<pre lang="json"><code>"dependencies": {
"dep1": "^0.2.0"
}
</code></pre>
<p><code>npm update</code> will install <code>dep1@0.2.0</code>, because there are no other
versions which satisfy <code>^0.2.0</code>.</p>
<p>If the dependence were on <code>^0.4.0</code>:</p>
<pre lang="json"><code>"dependencies": {
"dep1": "^0.4.0"
}
</code></pre>
<p>Then <code>npm update</code> will install <code>dep1@0.4.1</code>, because that is the highest-sorting
version that satisfies <code>^0.4.0</code> (<code>>= 0.4.0 <0.5.0</code>)</p>
<h4 id="updating-globally-installed-packages">Updating Globally-Installed Packages</h4>
<p><code>npm update -g</code> will apply the <code>update</code> action to each globally installed
package that is <code>outdated</code> – that is, has a version that is different from
<code>wanted</code>.</p>
<p>Note: Globally installed packages are treated as if they are installed with a caret semver range specified. So if you require to update to <code>latest</code> you may need to run <code>npm install -g [<pkg>...]</code></p>
<p>NOTE: If a package has been upgraded to a version newer than <code>latest</code>, it will
be <em>downgraded</em>.</p>
<h3 id="see-also">See Also</h3>
<ul>
<li><a href="../commands/npm-install.html">npm install</a></li>
<li><a href="../commands/npm-outdated.html">npm outdated</a></li>
<li><a href="../commands/npm-shrinkwrap.html">npm shrinkwrap</a></li>
<li><a href="../using-npm/registry.html">npm registry</a></li>
<li><a href="../configuring-npm/folders.html">npm folders</a></li>
<li><a href="../commands/npm-ls.html">npm ls</a></li>
</ul>
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