// father
<template>
  <children ref="childRef"/>
</template>

<script setup>
import { onMounted } from "vue";
import children from "./children"
ref: childRef = null
onMounted(()=>{
  console.log(childRef);       //  output:  {}
})
</script>


//  children
<template>
  <div>div</div>
</template>

<script setup>
const demo = () => {
  console.log("demo");
}
</script>

如题，子组件应该如何导出方法呢？

一些牢骚, 我到github上提问（https://github.com/vuejs/rfcs...），也许是我姿势不对，他们直接给我关了……没看到啥引导说明啊

更新解决方案 2021-3-13

直接去 https://discord.com/channels/... 问的，经过一番充满智慧的讨论后终于找到了解决方案 ^v^

// children
<script setup name="可以在这里设定组件名，github上找到的，未验证">
import { useContext } from "vue"
const { expose } = useContext()

const refresh = () => {
  console.log("refresh");
}

expose({
  refresh
})
</script>

// father
<script setup>
import { onMounted } from "vue";
import children from "./children"
ref: childRef = null
onMounted(()=>{
  childRef.refresh();  // output: refresh
})
</script>

ps. 不保证以后也这么写

文档里啥都有
https://v3.vuejs.org/guide/co...

Parent.vue

<template>
  <Child ref="childRef" />
</template>

<script setup>
import { onMounted, ref } from "vue";
export { default as Child } from "./Child";
onMounted(() => {
  childRef.value.demo()
});
export const childRef = ref(null);
// 如果用ref语法糖应该是像下面这样写，然后上面的ref不用import
// （ref语法糖的写法）用codesandbox没通过，不知道有没有实装，（没实装的话）可能得手动去拉github上的代码才能用
// ref: childRef = null
</script>
<style>
</style>

Child.vue

<template>
  <div>child</div>
</template>

<script setup>
export const demo = () => {
  console.log("demo");
}
</script>

子组件暴露方法和ref语法糖没啥关系，直接export就行了
https://github.com/vuejs/rfcs...
https://github.com/vuejs/rfcs...

ref是异步，直接console没东西，自己写个setTimeout或者用nextTick试试