blocks|key|4396717|text|不幸的是，Node.js还不支持es6的import。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4396718|要完成您想要做的事情(导入Express模块)，下面的代码应该足够了|4396719|var+express+=+require("express");|code-block|syntax|javascript|4396720|此外，请确保通过运行以下命令安装了Express|4396721|$+npm+install+express|4396722|有关学习Node.js的详细信息，请参阅Node.js+Docs。|4396723|entityMap|0|LINK|mutability|MUTABLE|url|https://nodejs.org/en/docs/^0|K|6|0|0|0|0|0|K|C|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|13|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|14|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|15|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|16|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|17|8|@]|D|@$9|18|A|19|1|1A]]|E|$]]|$1|S|3|-4|5|6|7|1B|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]]]

Unfortunately, Node.js doesn't support ES6's <code>import</code> yet.

To accomplish what you're trying to do (import the Express module), this code should suffice

<pre><code>var express = require("express");
</code></pre>

Also, be sure you have Express installed by running

<pre><code>$ npm install express
</code></pre>

See the <a href="https://nodejs.org/en/docs/" rel="noreferrer">Node.js Docs</a> for more information about learning Node.js.

blocks|key|4397124|text|如果你仍然不能使用"import“，这里是我处理它的方法:把它翻译成一个节点友好的请求。示例：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4397125|import+{+parse+}+from+'node-html-parser';|code-block|syntax|javascript|4397126|与以下内容相同：|4397127|const+parse+=+require('node-html-parser').parse;|4397128|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

In case that you still can't use "import" here is how I handled it:
Just translate it to a node friendly require. Example:

<pre><code>import { parse } from 'node-html-parser';
</code></pre>

Is the same as:

<pre><code>const parse = require('node-html-parser').parse;
</code></pre>

blocks|key|4396784|text|如果你可以使用'babel'，尝试在package.json中添加构建脚本(--presets=es2015)，如下所示。它使得将导入代码预编译成es2015|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4396785|"build":+"babel+server+--out-dir+build+--presets=es2015+&&+webpack"|code-block|syntax|javascript|4396786|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

if you can use 'babel', try to add build scripts in package.json(--presets=es2015) as below. it make to precompile import code to es2015

<pre><code>"build": "babel server --out-dir build --presets=es2015 &amp;&amp; webpack"
</code></pre>

blocks|key|4397224|text|从版本14.x+LTS开始，Node的稳定版本中支持import语句。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4397225|您所需要做的就是在package.json中指定"type":+"module"。|4397226|entityMap^0|Q|6|0|9|C|O|G|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|R|8|@]|D|@]|E|$]]]|I|$]]

<code>import</code> statements are supported in the stable release of Node since version 14.x LTS.
All you need to do is specify <code>&quot;type&quot;: &quot;module&quot;</code> in <code>package.json</code>.

blocks|key|4397058|text|在我的例子中，它是在处理.babelrc文件，它应该包含如下内容：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4397059|{
++"presets":+["es2015-node5",+"stage-3"],
++"plugins":+[]
}|code-block|syntax|javascript|4397060|entityMap^0|C|8|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

In my case it was looking after <code>.babelrc</code> file, and it should contain something like this: 

<pre><code>{
 "presets": ["es2015-node5", "stage-3"],
 "plugins": []
}
</code></pre>

blocks|key|4397173|text|我将在最初的问题中解决其他人没有的另一个问题。最近在我自己的NodeJS项目中从CommonJS转换到ESM之后，我很少看到关于这样一个事实的讨论，即您不能像使用require那样将导入放在您想放的任何地方。我的项目现在可以很好地处理导入，但是当我使用问题中的代码时，我首先得到一个错误，因为没有命名函数。在命名函数后，我收到以下内容...|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4397174|import+express+from+'express'
+++++++%5E%5E%5E%5E%5E%5E%5E

SyntaxError:+Unexpected+identifier
++++at+Loader.moduleStrategy+(internal/modules/esm/translators.js:88:18)|code-block|syntax|javascript|4397175|您不能像您所要求的那样将导入放在函数中。它们必须放在文件的顶部，在代码块之外。我自己在这个问题上浪费了相当多的时间。|4397176|因此，尽管上述所有答案都能帮助您让导入在项目中工作，但没有一个解决了原始问题中的代码无法按编写的方式工作的事实。|4397177|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I'm going to address another problem within the original question that no one else has. After recently converting from CommonJS to ESM in my own NodeJS project, I've seen very little discussion about the fact that you cannot place imports wherever you want, like you could with require. My project is working great with imports now, but when I use the code in the question, I first get an error for not having a named function. After naming the function, I receive the following...
<pre><code>import express from 'express'
 ^^^^^^^

SyntaxError: Unexpected identifier
 at Loader.moduleStrategy (internal/modules/esm/translators.js:88:18)
</code></pre>
You cannot place imports inside functions like you could require. They have to be placed at the top of the file, outside code blocks. I wasted quite a bit of time on this issue myself.
So while all of the above answers are great at helping you get imports to work in your project, none address the fact that the code in the original question cannot work as written.

blocks|key|4397021|text|我的项目使用node+v10.21.0，它仍然不支持ES6+import关键字。有多种方法可以让node识别import，其中之一是以node++--experimental-modules++index.mjs开头的node+(+mjs扩展已经在这里的一个答案中介绍过了)。但是，通过这种方式，您将无法在代码中使用特定于节点的关键字，如require。如果需要同时使用nodejs的require关键字和es6的import，那么解决办法就是使用esm+npm包。将esm包作为依赖项添加后，需要通过特殊配置启动节点，如：node+-r+esm+index.js|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4397022|entityMap^0|U|6|1I|6|1V|13|38|3|4P|7|5C|7|5R|6|68|3|6I|3|7A|K|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]|$9|U|A|V|B|C]|$9|W|A|X|B|C]|$9|Y|A|Z|B|C]|$9|10|A|11|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|G|$]]

My project uses node v10.21.0, which still does not support ES6 <code>import</code> keyword. There are multiple ways to make node recognize <code>import</code>, one of them is to start node with <code>node --experimental-modules index.mjs</code> (The <code>mjs</code> extension is already covered in one of the answers here). But, this way, you will not be able to use node specific keyword like <code>require</code> in your code. If there is need to use both nodejs's <code>require</code> keyword along with ES6's <code>import</code>, then the way out is to use the <code>esm</code> npm package. After adding <code>esm</code> package as a dependency, node needs to be started with a special configuration like: <code>node -r esm index.js</code>

blocks|key|4396940|text|只需安装更高版本的Node即可。不支持As到节点v10+es6。您需要禁用一些标志或使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4396941|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Simply install a higher version of Node. As till Node v10 es6 is not supported. You need to disable a few flags or use

I don't understand what is wrong.
Node v5.6.0
NPM v3.10.6

The code:


<pre><code>function (exports, require, module, __filename, __dirname) {
 import express from 'express'
};
</code></pre>

The error:

<pre><code>SyntaxError: Unexpected token import
 at exports.runInThisContext (vm.js:53:16)
 at Module._compile (module.js:387:25)
 at Object.Module._extensions..js (module.js:422:10)
 at Module.load (module.js:357:32)
 at Function.Module._load (module.js:314:12)
 at Function.Module.runMain (module.js:447:10)
 at startup (node.js:140:18)
 at node.js:1001:3
</code></pre>

Node.js - SyntaxError: Unexpected token import

我不明白哪里出了问题。节点v5.6.0 NPM v3.10.6代码：function (exports, require, module, __filename, __dirname) {    import express from 'express'};错误：SyntaxError: Unexpected token import    at exports.runInThisContext 

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