Following the Migration guide from Vue 2 to Vue 3, the object $listeners was removed in favor of using eventListeners in the $attrs property.

However, when using the @delete event listener, the event listener does not appear in the object.

Using a different name such as @delet does the trick.

<!-- Recognized -->
<GBadge :value="value" @delet="() => {}" />

<!-- Not recognized -->
<GBadge :value="value" @delete="() => {}" />

EDIT: Posted this in the wrong repository... Closing.

EDIT 2: After reading the thread linked in the first comment, documentation could maybe be improved as @LinusBorg said in this reply