DemoFileInputLoading.vue

<script setup lang="ts">
const file = ref()
const loading = ref(true)

watch(file, () => {
  loading.value = !file.value[0]
})
</script>

<template>
  <VFileInput
    v-model="file"
    :loading="loading"
    color="primary"
    label="File input"
  />
</template>