;, &quot;linux&quot; ]
</code></pre><p>You can also blacklist instead of whitelist operating systems,
just prepend the blacklisted os with a &#39;!&#39;:</p>
<pre><code>&quot;os&quot; : [ &quot;!win32&quot; ]
</code></pre><p>The host operating system is determined by <code>process.platform</code></p>
<p>It is allowed to both blacklist, and whitelist, although there isn&#39;t any
good reason to do this.</p>
<h2 id="cpu">cpu</h2>
<p>If your code only runs on certain cpu architectures,
you can specify which on