er/" data-id="IIL"><h2><code>IndexIdsListener</code></h2><p>The <code>IndexIdsListener</code> type describes a function that is used to listen to <a href="/api/indexes/type-aliases/concept/index/"><code>Index</code></a> definitions being added or removed. <a href="/api/indexes/type-aliases/listener/indexidslistener/">Read more</a>.</p></section><section class="s2" id="/api/indexes/type-aliases/listener/sliceidslistener/" data-id="SIL"><h2><code>SliceIdsListener</code></h2><p>The <code>SliceIdsListener</code