-parameter">type</span><span class="tsd-signature-symbol">?</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol"> =&gt; </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span></h5><ul class="tsd-parameters"><li class="tsd-parameter-signature"><ul class="tsd-signatures"><li class="tsd-signature" id="__type.isAvailableThemeType.__type-13.__type-14"><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">type</span><sp