[@vue/compiler-sfc] <script setup> cannot contain ES module exports. If you are using a previous version of <script setup>, please consult the updated RFC at https://github.com/vuejs/rfcs/pull/227

这个错误提示说明你在使用 `<script setup>` 时，使用了 ES 模块的导出语法，这是不被支持的。这是因为在 `<script setup>` 中，你应该使用 `defineProps`、`defineEmits`、`defineExpose`、`withDefaults` 等函数来定义组件的 props、emits、暴露给父组件的属性和默认值，而不是使用 ES 模块的导出语法。

如果你想要导出一个组件对象，可以使用 `defineComponent` 函数来定义组件对象，然后将其导出。例如：

<template>
  <div>{{ message }}</div>
</template>

<script setup>
import { defineComponent } from 'vue';

const message = 'Hello, World!';

export default defineComponent({
  data() {
    return { message };
  },
});
</script>

在上述代码中，我们使用 `defineComponent` 函数定义了一个组件对象，然后将其导出。`defineComponent` 函数接受一个配置对象作为参数，该对象中包含了组件的选项，例如 `data`、`methods`、`computed` 等。通过这种方式，我们可以在 `<script setup>` 中正确地定义组件并导出它，而不需要使用 ES 模块的导出语法。

相关问题

<script setup>` cannot contain ES module exports.

The error message you're seeing suggests that you're using the `<script setup>` syntax in a Vue 3 single-file component, and you're trying to export an ES module from within it.

The `<script setup>` syntax is a new feature in Vue 3 that allows you to write more concise and readable component code. However, it has some limitations, and one of them is that it cannot contain ES module exports.

To fix this issue, you should move your export statements outside of the `<script setup>` block. For example, you can use a separate `<script>` block to export your component:

<template>
  <!-- your template code -->
</template>

<script setup>
  // your component logic
</script>

<script>
  export default {
    // your component options
  }
</script>

Alternatively, you can use the `defineComponent` function from the `vue` package to define your component options:

<template>
  <!-- your template code -->
</template>

<script setup>
  import { defineComponent } from 'vue'

  // your component logic
</script>

<script>
  export default defineComponent({
    // your component options
  })
</script>

Either way, make sure that your export statements are outside of the `<script setup>` block, and you should be able to fix the error.

[plugin:vite:vue] [vue/compiler-sfc] Missing semicolon. (2:11) C:/Users/邬东林/Desktop/ziyuan/vue/Login/src/App.vue 5 | </template> 6 | <script setup> 7 | mounted() { 8 | const video = document.getElementById('myVideo'); 9 | video.style.display = 'block';

这个错误提示是在使用 Vite 和 Vue 的时候出现的，它是因为你在 App.vue 文件的 <script setup> 标签中缺少了一个分号。你需要在 mounted() 函数的最后加上一个分号，代码应该是这样的：

<script setup>
  mounted() {
    const video = document.getElementById('myVideo');
    video.style.display = 'block';
  };
</script>

加上分号后，你应该能够正常编译运行你的代码了。