在ES6中导出多个变量？ [英] Export more than one variable in ES6?

问题描述

我正在ES6中导出多个变量：

exports.js

  var TestObject = Parse.Object.extend（'TestObject'）
 var Post = Parse.Object.extend（'Post'）
 
导出默认TestObject 
 export post 
  

main.js：

$'code'从'../store'导入TestObject
import从'../store'发布

var testObject = new TestObject（）/ / use以同样的方式
testObject.save（json）.then（object => {
console.log（'yay！it working'，object）
}）

我知道只有一个默认值，所以我只使用 default 在第一个项目。

但是，我收到这个错误信息：

 code>模块构建失败：SyntaxError：/home/alex/node/my-project/src/store/index.js：意外的令牌（9：7）
 7 | 
 8 |导出默认值TestObject 
> 9 |导出帖子
  

也许我做错了吗？

解决方案

这是无效的语法。你可以做

  export {Post} 
  

甚至只是

  export var Post = Parse.Object.extend（'Post' ）
  

或将整个文件缩短到

  export default Parse.Object.extend（'TestObject'）
 export var Post = Parse.Object.extend（'Post'）
  

您的进口商也会收录，您需要执行

 code> import TestObject，{Post} from'../store'
  

这是if你真的想要一个默认的导出和一个单独的命名导出。你也可以只做两个命名的export，如果你想要的话没有默认，例如

  export var TestObject = Parse.Object.extend （'TestObject'），
 Post = Parse.Object.extend（'Post'）
  

和

  import {TestObject，Post} from'../store'
  

I'm trying to export more than one variable in ES6:

exports.js

var TestObject = Parse.Object.extend('TestObject')
var Post = Parse.Object.extend('Post')

export default TestObject
export Post

main.js:

import TestObject from '../store'
import Post from '../store'

var testObject = new TestObject() // use Post in the same way
testObject.save(json).then(object => {
  console.log('yay! it worked', object)
})

I understand that there's only one default value so I only used default in the first item.

However, I get this error message:

Module build failed: SyntaxError: /home/alex/node/my-project/src/store/index.js: Unexpected token (9:7)
   7 | 
   8 | export default TestObject
>  9 | export Post

Maybe I'm doing it the wrong way?

解决方案

That is not valid syntax. You can do

export {Post}

or even just

export var Post = Parse.Object.extend('Post')

or shorten the whole file to

export default Parse.Object.extend('TestObject')
export var Post = Parse.Object.extend('Post')

Your imports are also incorret, you'll want to do

import TestObject, {Post} from '../store'

This is if you really want a single default export and a separate named export. You can also just make two named exports and have no default if you want, e.g.

export var TestObject = Parse.Object.extend('TestObject'),
    Post = Parse.Object.extend('Post')

and

import {TestObject, Post} from '../store'

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