id="defined-in-4" tabindex="-1">Defined in <a class="header-anchor" href="#defined-in-4" aria-label="Permalink to &quot;Defined in&quot;">​</a></h4><p><a href="https://github.com/Shiotsukikaedesari/vis-three/blob/2f5203e6/packages/utils/tools/index.ts#L10" target="_blank" rel="noreferrer">tools/index.ts:10</a></p><hr><h3 id="isvalidkey" tabindex="-1">isValidKey <a class="header-anchor" href="#isvalidkey" aria-label="Permalink to &quot;isValidKey&quot;">​</a></h3><p>▸ <strong>isValidKey</strong>(<code>