marshallValue(<span class="hljs-string">''</span>); <span class="hljs-comment">// returns undefined</span>
<span class="hljs-keyword">const</span> unmarshalled = marshaller.unmarshallValue(marshalled); <span class="hljs-comment">// returns undefined</span>
</code></pre>
				<h3 id="symbols-and-functions">Symbols and functions</h3>
				<p>By default, the marshaller will throw an error when it encounters a symbol or
					function. You can direct the marshaller to instead omit such values from its
				output b