x="-1" class="anchor enhancedAnchor_2LWZ" id="defined-in-26"></a>Defined in<a class="hash-link" href="#defined-in-26" title="Ë¶ãÂá∫„Åó„Å∏„ÅÆÁõ¥Êé•„É™„É≥„ÇØ">#</a></h4><p>node_modules/@types/node/events.d.ts:63</p><hr><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_2LWZ" id="once"></a>once<a class="hash-link" href="#once" title="Ë¶ãÂá∫„Åó„Å∏„ÅÆÁõ¥Êé•„É™„É≥„ÇØ">#</a></h3><p>‚ñ∏ <strong>once</strong>(<co