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<h1><a href="../cli/npm-run-script.html">npm-run-script</a></h1> <p>Run arbitrary package scripts</p>
<h2 id="synopsis">SYNOPSIS</h2>
<pre><code>npm run-script &lt;command&gt; [-- &lt;args&gt;...]
alias: npm run
</code></pre><h2 id="description">DESCRIPTION</h2>
<p>This runs an arbitrary command from a package&#39;s <code>&quot;scripts&quot;</code> object. If no
<code>&quot;command&quot;</code> is provided, it will list the available scripts. <code>run[-script]</code> is
used by the test, start, restart, and stop commands, but can be called
directly, as well. When the scripts in the package are printed out, they&#39;re
separated into lifecycle (test, start, restart) and directly-run scripts.</p>
<p>As of <a href="http://blog.npmjs.org/post/98131109725/npm-2-0-0"><code>npm@2.0.0</code></a>, you can
use custom arguments when executing scripts. The special option <code>--</code> is used by
<a href="http://goo.gl/KxMmtG">getopt</a> to delimit the end of the options. npm will pass
all the arguments after the <code>--</code> directly to your script:</p>
<pre><code>npm run test -- --grep=&quot;pattern&quot;
</code></pre><p>The arguments will only be passed to the script specified after <code>npm run</code>
and not to any pre or post script.</p>
<p>The <code>env</code> script is a special built-in command that can be used to list
environment variables that will be available to the script at runtime. If an
&quot;env&quot; command is defined in your package it will take precedence over the
built-in.</p>
<p>In addition to the shell&#39;s pre-existing <code>PATH</code>, <code>npm run</code> adds
<code>node_modules/.bin</code> to the <code>PATH</code> provided to scripts. Any binaries provided by
locally-installed dependencies can be used without the <code>node_modules/.bin</code>
prefix. For example, if there is a <code>devDependency</code> on <code>tap</code> in your package,
you should write:</p>
<pre><code>&quot;scripts&quot;: {&quot;test&quot;: &quot;tap test/\*.js&quot;}
</code></pre><p>instead of <code>&quot;scripts&quot;: {&quot;test&quot;: &quot;node_modules/.bin/tap test/\*.js&quot;}</code> to run your tests.</p>
<p><code>npm run</code> sets the <code>NODE</code> environment variable to the <code>node</code> executable with
which <code>npm</code> is executed, and adds the directory within which it resides to the
<code>PATH</code>, too.</p>
<p>If you try to run a script without having a <code>node_modules</code> directory and it fails,
you will be given a warning to run <code>npm install</code>, just in case you&#39;ve forgotten.</p>
<h2 id="see-also">SEE ALSO</h2>
<ul>
<li><a href="../misc/npm-scripts.html">npm-scripts(7)</a></li>
<li><a href="../cli/npm-test.html">npm-test(1)</a></li>
<li><a href="../cli/npm-start.html">npm-start(1)</a></li>
<li><a href="../cli/npm-restart.html">npm-restart(1)</a></li>
<li><a href="../cli/npm-stop.html">npm-stop(1)</a></li>
</ul>
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<p id="footer">npm-run-script &mdash; npm@3.9.5</p>
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