node require（）与es6 import：为什么这个例子不起作用 [英] node require() versus es6 import: why doesn't this example work

问题描述

是不是ES6替换节点require（）？我有以下代码：

Isn't ES6 replacing node require()? I've got the following code:

var sprintf = require（sprintf-js）。sprintf;

这与宣传的一样。我可以使用sprintf（）。我想使用ES6导入语句完成相同的操作：

This works as advertised. I can just use sprintf(). I'd like to accomplish the same using ES6 import statements:

从'sprintf-js'导入sprintf;

这不起作用。为什么不？我该如何解决？如果您可以解释sprintf-js中的导出如何工作，则可以获得奖励。

This does not work. Why not? How can I fix it? Bonus points if you can explain how the exports work inside sprintf-js.

推荐答案

您可以通过多种方式访问​​模块导出。 请参阅MDN文章。

You can access module exports in a number of ways. See the MDN article.

import defaultMember from "module-name";
import * as name from "module-name";
import { member } from "module-name";
import { member as alias } from "module-name";
import { member1 , member2 } from "module-name";
import { member1 , member2 as alias2 , [...] } from "module-name";
import defaultMember, { member [ , [...] ] } from "module-name";
import defaultMember, * as name from "module-name";
import "module-name";

在这种情况下，如果您已分配的导出，则语法将有效sprintf 为默认;如果您已将 sprintf 分配给默认对象。

In this case, your syntax would work if you had assigned the export of sprintf to be default; if you had assigned sprintf to the default object.

假设它不是，正确的语法将在大括号内包含对导出方法的引用。

Assuming its not, a correct syntax would incorporate references to the exported method within curly-braces.

import { sprintf } from 'sprintf-js';

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