Vue 3.0 repro

Minimal starting fiddle for Vue.js 3 bug reports

HTML

<script src="https://unpkg.com/vue@3"></script>

<div id="app">
  {{ msg }}
</div>

JavaScript

const { createApp, getCurrentInstance } = Vue

const app = createApp({
	template: `<test v-highlight="'red'"></test>`,
})

app.component('test', {
	name: 'test',
	template: `<div>{{msg}}</div>`,
  data: () => ({ msg: 'Hello Vue.js' }),
  setup() {
  	const instance = getCurrentInstance()
    console.log(instance)
  }
})

app.directive('highlight', {
  beforeMount(el, binding, vnode) {
    el.style.background = binding.value
  }
})

app.mount('#app')