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resources/js/components/ui/combobox/ComboboxViewport.vue

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+<script setup lang="ts">
+import type { ComboboxViewportProps } from "reka-ui"
+import type { HTMLAttributes } from "vue"
+import { reactiveOmit } from "@vueuse/core"
+import { ComboboxViewport, useForwardProps } from "reka-ui"
+import { cn } from "@/lib/utils"
+
+const props = defineProps<ComboboxViewportProps & { class?: HTMLAttributes["class"] }>()
+
+const delegatedProps = reactiveOmit(props, "class")
+
+const forwarded = useForwardProps(delegatedProps)
+</script>
+
+<template>
+  <ComboboxViewport
+    data-slot="combobox-viewport"
+    v-bind="forwarded"
+    :class="cn('max-h-[300px] scroll-py-1 overflow-x-hidden overflow-y-auto', props.class)"
+  >
+    <slot />
+  </ComboboxViewport>
+</template>