vue3使用is动态切换组件，activeComponent用ref定义报错

Vue received a Component which was made a reactive object. This can lead to unnecessary performance overhead, and should be avoided by marking the component with `markRaw` or using `shallowRef` instead of `ref`

 我们需要使用 shallowRef 替代 ref 来避免报错。shallowRef 创建的引用不会将组件标记为响应式对象，从而避免了潜在的性能开销。 

<button @click="switchComponent('componentA')">Component A</button>
<button @click="switchComponent('componentB')">Component B</button>
<component :is="currentComponent"></component><script setup name="swtichComponent">
import { computed, ref, markRaw } from 'vue'
import ComponentA from './ComponentA.vue';
import ComponentB from './ComponentB.vue';const currentComponent = ref(markRaw(ComponentA));function switchComponent(component) {if (component === 'componentA') {currentComponent.value = markRaw(ComponentA);} else if (component === 'componentB') {currentComponent.value = markRaw(ComponentB);}
}</script>

切换组件不能做全局相关操作，例如关闭当前页面，需要子传父调用

父：
<component :is="activeComponent" @close="handleClose" />function handleClose() {window.close()
}子：
const emits = defineEmits(['close'])
const closeHandle = () => {emits('close')
}