cz-hjjc-oa/src/App.vue

<template>
  <div id="app">
    <router-view />

    <ThemePicker style="display: none;"></ThemePicker>
  </div>
</template>

<script>
import ThemePicker from "@/components/ThemePicker/index.vue";
export default {
  name: 'App',
  components: {
    ThemePicker
  }
}
</script>