s all but one type from a union, but
doesn't necessarily need to:</p>
<p><pre class="typescript-code"><span class="tm-kw">type</span> <span class="tm-typ"><span class="typeAliasName">Type</span></span> = <span class="error" tabindex="0" aria-describedby="errLabel-2304-12-9"><span class="error-highlight"></span><span class="tm-typ">Anonymous</span><span id="errLabel-2304-12-9" role="tooltip" class="error-tooltip">Cannot find name 'Anonymous'.</span></span> | <span class="error" tabindex="0" aria-describedby=