are documented so that their presence is
not surprising. This section is taken almost directly from the
<a href="https://zlib.net/manual.html#Constants">zlib documentation</a>.</p>
<p>Previously, the constants were available directly from <code>require('zlib')</code>, for
instance <code>zlib.Z_NO_FLUSH</code>. Accessing the constants directly from the module is
currently still possible but is deprecated.</p>
<p>Allowed flush values.</p>
<ul>
<li><code>zlib.constants.Z_NO_FLUSH</code></li>
<li><code>zlib.con