//developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type" class="type">&#x3C;number></a></li>
</ul>
<p>The <code>zlib.bytesWritten</code> property specifies the number of bytes written to
the engine, before the bytes are processed (compressed or decompressed,
as appropriate for the derived class).</p>
<h3><code>zlib.close([callback])</code><span><a class="mark" href="#zlib_zlib_close_callback" id="zlib_zlib_close_callback">#</a></span></h3>
<div class="api_metadata">
<span>Added in: v0.