ES6模块语法：是否可以`从...导出*作为名称？ [英] ES6 module syntax: is it possible to `export * as Name from ...`?

问题描述

查看问题标题。我找到了很好的参考资料，可以获得 export 的表格，但是我还没有看到我在寻找的东西。

See question title. I found a great reference for the forms of export available, but I have not seen what I'm looking for.

是否可以做以下的事情？

Is it possible to do something like the following?

// file: constants.js
export const SomeConstant1 = 'yay';
export const SomeConstant2 = 'yayayaya';

// file: index.js
export * as Constants from './constants.js';

I.e。这将在 index.js 内提供一个名为export Constants ，其中包含来自 module.js 。

I.e. this would provide a named export Constants inside of index.js containing all of the named exports from module.js.

这个答案似乎表明它在TypeScript中是不可能的;对于纯JavaScript来说是一样的吗？

This answer seems to indicate it's not possible in TypeScript; is the same true for pure JavaScript?

（这个例子有点做作;实际上我试图有一个 prop-types。 js 模块在React包中使用命名导出供内部使用，但也导出 PropTypes 下的prop类型定义以供外部使用。我试过为了问题而简化。）

(This example is a bit contrived; in reality I'm trying to have a prop-types.js module that uses named exports for internal use within the React package, but also exports the prop type definitions under PropTypes for external consumption. I tried to simplify for the sake of the question.)

推荐答案

不，JS中也不允许这样做，但是添加提案。现在，只需使用两步流程导入到局部变量并导出：

No, it's not allowed in JS either, however there is a proposal to add it. For now, just use the two-step process with importing into a local variable and exporting that:

// file: constants.js
export const SomeConstant1 = 'yay';
export const SomeConstant2 = 'yayayaya';

// file: index.js
import * as Constants from './constants.js';
export {Constants};

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