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exportExpose

稳定性: 实验性 ⚠️ 实验性功能,风险自负

在 Vue SFC script-setup 中将 export 语句转换为 defineExpose 参数。

特性支持
Vue 3
Nuxt 3?
Vue 2
Volar Plugin

用法

支持以下语法:

  • 局部变量/函数/类
  • 别名导出
  • 从其他文件导出
  • 命名空间导出
  • 重命名导出

1. 局部变量/函数/类

vue
<script setup lang="ts">
export const 
foo
: string = 'foo',
bar
= 10
export let
baz
: string | undefined
export var
qux
=
fn
()
export const {
a
,
b
,
c
} = {
a
: 1,
b
: 2,
c
: 3 }
export function
fn
() {}
export class
A
{}
</script>
编译后代码
vue
<script setup lang="ts">
const 
foo
: string = 'foo',
bar
= 10
let
baz
: string | undefined
const
qux
=
fn
()
const {
a
,
b
,
c
} = {
a
: 1,
b
: 2,
c
: 3 }
function
fn
() {}
class
A
{}
defineExpose
({
foo
,
bar
,
baz
,
qux
,
a
,
b
,
c
,
fn
,
A
,
}) </script>

2. 别名导出

vue
<script setup lang="ts">
const 
foo
= ''
export {
foo
as
foo1
}
</script>
编译后代码
vue
<script setup lang="ts">
const 
foo
= 'foo'
defineExpose
({
foo1
:
foo
,
}) </script>

3. 从其他文件导出

vue
<script setup lang="ts">
export { 
foo
, type
Foo
, foo as
bar
} from './types'
</script>
ts
const foo = 'foo'
type Foo = string

export { type Foo, foo }
编译后代码
vue
<script setup lang="ts">
import {
  type 
Foo
,
foo as
__MACROS_expose_0
,
foo as
__MACROS_expose_1
,
} from './types'
defineExpose
({
foo
:
__MACROS_expose_0
,
bar
:
__MACROS_expose_1
,
}) </script>

4. 命名空间导出

vue
<script setup lang="ts">
export * as 
foo
from './types'
</script>
ts
export const foo = 'foo'
编译后代码
vue
<script setup lang="ts">
import * as 
__MACROS_expose_0
from './types'
defineExpose
({
foo
:
__MACROS_expose_0
,
}) </script>

5. 重命名导出

vue
<script setup lang="ts">
const foo = 1,
  bar = 1

export { foo } from './types'
export * as bar from './types'
</script>
编译后代码
vue
<script setup lang="ts">
import { foo as __MACROS_expose_0 } from './types'
import * as __MACROS_expose_1 from './types'

const foo = 1,
  bar = 1
defineExpose({
  foo: __MACROS_expose_0,
  bar: __MACROS_expose_1,
})
</script>

限制

当前不支持以下语法:

ts
// 1. 全部导出 ❌
export * from '../types'

// 2. 默认导出 ❌
const a = 'a'
export default a

Volar 配置

jsonc
// tsconfig.json
{
  "vueCompilerOptions": {
    "target": 3,
    "plugins": [
      "@vue-macros/volar/export-expose",
      // ...更多功能
    ],
  },
}

贡献者

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