Vue3 语法糖

<template>
    <div ref="node" >
    　　<node v-bind="$attrs"/>

　　</div>
</template>
<script setup>
//要带.vue
import  node from './node.vue'
import { ref,reactive,getCurrentInstance } from 'vue'
var ctx = getCurrentInstance().ctx
const props = defineProps({  foo: String  })
const emit = defineEmits(["clickNode","changeNodeSite"])
var a = ref(!1)
var b = reactive({n:1})
console.log(ctx.$.refs.node)
//属性不穿透
ctx.$.inheritAttrs = false
defineExpose({ a, b })

</script>