naive-ui/es/_utils/vue/get-slot.mjs

A Vue 3 Component Library. Fairly Complete, Theme Customizable, Uses TypeScript, Fast

export function getSlot(instance, slotName = 'default', fallback = []) {
  const slots = instance.$slots;
  const slot = slots[slotName];
  if (slot === undefined) return fallback;
  return slot();
}