md/src/App.vue

<template>
  <loading v-if="loading" />
  <codemirror-editor v-else/>
</template>

<script>
import Loading from './components/Loading'
import CodemirrorEditor from './components/CodemirrorEditor'
export default {
  name: 'App',
  components: {
    Loading,
    CodemirrorEditor
  },
  data () {
    return {
      loading: true
    }
  },
  mounted () {
    setTimeout(() => {
      this.loading = false
    }, 200)
  }
}
</script>

<style lang="scss" scoped>

</style>