create frontend directory

frontend/components/ui/scroll-area/ScrollBar.vue

@@ -0,0 +1,31 @@
+<script setup lang="ts">
+import type { HTMLAttributes } from 'vue'
+import { reactiveOmit } from '@vueuse/core'
+import { ScrollAreaScrollbar, type ScrollAreaScrollbarProps, ScrollAreaThumb } from 'reka-ui'
+import { cn } from '@/lib/utils'
+
+const props = withDefaults(defineProps<ScrollAreaScrollbarProps & { class?: HTMLAttributes['class'] }>(), {
+  orientation: 'vertical',
+})
+
+const delegatedProps = reactiveOmit(props, 'class')
+</script>
+
+<template>
+  <ScrollAreaScrollbar
+    data-slot="scroll-area-scrollbar"
+    v-bind="delegatedProps"
+    :class="
+      cn('flex touch-none p-px transition-colors select-none',
+         orientation === 'vertical'
+           && 'h-full w-2.5 border-l border-l-transparent',
+         orientation === 'horizontal'
+           && 'h-2.5 flex-col border-t border-t-transparent',
+         props.class)"
+  >
+    <ScrollAreaThumb
+      data-slot="scroll-area-thumb"
+      class="bg-border relative flex-1 rounded-full"
+    />
+  </ScrollAreaScrollbar>
+</template>