fix: export pages range

Author: antfu

.vitepress/theme/components/ThemeInfo.vue

@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import { defineProps, ref } from 'vue'
-import { useIntervalFn } from '@vueuse/core'
+import { isClient, useIntervalFn } from '@vueuse/core'
 import type { ThemeInfo } from '../../themes'
 
 const props = defineProps<{
@@ -9,10 +9,11 @@ const props = defineProps<{
 
 const index = ref(0)
 
-if (props.theme.previews.length > 1) {
+if (props.theme.previews.length > 1 && isClient) {
   const { resume } = useIntervalFn(() => {
     index.value = (index.value + 1) % props.theme.previews.length
   }, 3000, false)
+  // add random defer so they don't starts together
   setTimeout(resume, Math.round(1000 * Math.random()))
 }
 </script>