blocks|key|710524|text|我总是使用这个命令|type|unstyled|depth|inlineStyleRanges|entityRanges|data|710525|node+-i+-e+"$(<+yourScript.js)"|code-block|syntax|javascript|710526|它的工作原理与Python中的完全一样，不需要任何包。|710527|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

i always use this command

<pre><code>node -i -e "$(&lt; yourScript.js)"
</code></pre>

works exactly as in Python without any packages.

blocks|key|710375|text|我制作了Vorpal.js，它通过将你的节点添加成一个交互式的命令行界面来处理这个问题。它支持REPL扩展，使您在运行的应用程序的上下文中进入REPL。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|710376|var+vorpal+=+require('vorpal')();
var+repl+=+require('vorpal-repl');

vorpal
++.delimiter('myapp>')
++.use(repl)
++.show()
++.parse(process.argv);+|code-block|syntax|javascript|710377|然后你可以运行这个应用程序，它会进入一个REPL。|710378|$+node+myapp.js+repl
myapp>+repl:+|710379|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/dthree/vorpal^0|4|9|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|C|$]]|$1|K|3|L|5|F|7|10|8|@]|9|@]|C|$G|H]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

I made <a href="https://github.com/dthree/vorpal" rel="noreferrer">Vorpal.js</a>, which handles this problem by turning your node add into an interactive CLI. It supports a REPL extension, which drops you into a REPL within the context of your running app.

<pre><code>var vorpal = require('vorpal')();
var repl = require('vorpal-repl');

vorpal
 .delimiter('myapp&gt;')
 .use(repl)
 .show()
 .parse(process.argv); 
</code></pre>

Then you can run the app and it will drop into a REPL.

<pre><code>$ node myapp.js repl
myapp&gt; repl: 
</code></pre>

blocks|key|710566|text|另一种方法是将这些函数定义为全局函数。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|710567|global.helloWorld+=+function()+{+console.log("Hello+World");+}|code-block|syntax|javascript|710568|然后在REPL中预加载文件，如下所示：|710569|node+-r+./file.js|710570|然后，可以在REPL中直接访问函数helloWorld。|offset|length|style|CODE|710571|entityMap^0|0|0|0|0|H|A|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@$M|X|N|Y|O|P]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

Another way is to define those functions as global.

<pre><code>global.helloWorld = function() { console.log("Hello World"); }
</code></pre>

Then preload the file in the REPL as:

<pre><code>node -r ./file.js
</code></pre>

Then the function <code>helloWorld</code> can be accessed directly in the REPL.

blocks|key|710618|text|下面是George's+answer的bash函数版本|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|710619|noderepl()+{
++++FILE_CONTENTS="$(<+$1+)"
++++node+-i+-e+"$FILE_CONTENTS"
}|code-block|syntax|javascript|710620|如果您将其放入您的~/.bash_profile中，则可以将其用作别名，即：|style|CODE|710621|noderepl+foo.js|710622|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/45781299/350761^0|3|F|0|0|0|9|F|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|11|8|@$A|12|B|13|K|L]]|9|@]|C|$]]|$1|M|3|N|5|F|7|14|8|@]|9|@]|C|$G|H]]|$1|O|3|-4|5|6|7|15|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

Here's a bash function version of 
<a href="https://stackoverflow.com/a/45781299/350761">George's answer</a>:

<pre class="lang-bash prettyprint-override"><code>noderepl() {
 FILE_CONTENTS="$(&lt; $1 )"
 node -i -e "$FILE_CONTENTS"
}
</code></pre>

If you put this in your <code>~/.bash_profile</code> you can use it like an alias, i.e.:

<pre><code>noderepl foo.js
</code></pre>

blocks|key|710477|text|为什么不把文件加载到交互式节点repl中呢？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|710478|node+-h
-e,+--eval+script++++++++++evaluate+script
-i,+--interactive++++++++++always+enter+the+REPL+even+if+stdin

node+-e+'var+client+=+require("./build/main/index.js");+console.log("Use+`client`+in+repl")'+-i|code-block|syntax|javascript|710479|然后，您可以添加到package.json脚本|710480|"repl":+"node+-e+'var+client+=+require(\"./build/main/index.js\");+console.log(\"Use+`client`+in+repl\")'+-i",|710481|使用node+v8.1.2测试|710482|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Why not load the file into an interactive node repl?

<pre><code>node -h
-e, --eval script evaluate script
-i, --interactive always enter the REPL even if stdin

node -e 'var client = require("./build/main/index.js"); console.log("Use `client` in repl")' -i
</code></pre>

Then you can add to package.json scripts

<pre><code>"repl": "node -e 'var client = require(\"./build/main/index.js\"); console.log(\"Use `client` in repl\")' -i",
</code></pre>

tested using node v8.1.2

blocks|key|710266|text|目前你不能直接这样做，但是你可以在REPL中使用mylib+=+require('./foo.js')。请记住，方法是导出的，而不是声明为全局变量的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|710267|entityMap^0|O|R|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

Currently you can't do that directly, but you can <code>mylib = require('./foo.js')</code> in the REPL. Remember methods are exported, not declared as globals.

blocks|key|710325|text|replpad很酷，但是为了快速简便地将文件加载到节点，导入其变量并启动.js，您可以将以下代码添加到您的repl文件的末尾|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|710326|if+(require.main+===+module){
++++(function()+{
++++++++var+_context+=+require('repl').start({prompt:+'$>+'}).context;
++++++++var+scope+=+require('lexical-scope')(require('fs').readFileSync(__filename));
++++++++for+(var+name+in+scope.locals['']+)
++++++++++++_context[scope.locals[''][name]]+=+eval(scope.locals[''][name]);
++++++++for+(name+in+scope.globals.exported)
++++++++++++_context[scope.globals.exported[name]]+=+eval(scope.globals.exported[name]);
++++})();
}|code-block|syntax|javascript|710327|现在，如果您的文件是src.js，运行node+src.js将启动节点，加载文件，启动REPL，并复制在顶层声明为var的所有对象以及任何导出的全局变量。if+(require.main+===+module)确保如果通过require语句包含src.js，则不会执行此代码。实际上，您可以在if语句中添加您希望在独立运行src.js时执行的任何代码，以实现调试目的。|710328|entityMap^0|0|7|0|0|A|6|J|B|1L|3|25|S|33|7|3E|6|42|2|4H|6|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]|$9|11|A|12|B|C]|$9|13|A|14|B|C]|$9|15|A|16|B|C]|$9|17|A|18|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|N|$]]

<code>replpad</code> is cool, but for a quick and easy way to load a file into node, import its variables and start a repl, you can add the following code to the end of your .js file

<pre><code>if (require.main === module){
 (function() {
 var _context = require('repl').start({prompt: '$&gt; '}).context;
 var scope = require('lexical-scope')(require('fs').readFileSync(__filename));
 for (var name in scope.locals[''] )
 _context[scope.locals[''][name]] = eval(scope.locals[''][name]);
 for (name in scope.globals.exported)
 _context[scope.globals.exported[name]] = eval(scope.globals.exported[name]);
 })();
}
</code></pre>

Now if your file is <code>src.js</code>, running <code>node src.js</code> will start node, load the file, start a REPL, and copy all the objects declared as <code>var</code> at the top level as well as any exported globals.
The <code>if (require.main === module)</code> ensures that this code will not be executed if <code>src.js</code> is included through a <code>require</code> statement. I fact, you can add any code you want to be excuted when you are running <code>src.js</code> standalone for debugging purposes inside the <code>if</code> statement.

blocks|key|494829|text|我在这里看不到的另一个建议是:尝试这一小段代码|type|unstyled|depth|inlineStyleRanges|entityRanges|data|494830|#!/usr/bin/env+node
'use+strict';

const+repl+=+require('repl');
const+cli+=+repl.start({+replMode:+repl.REPL_MODE_STRICT+});
cli.context.foo+=+require('./foo');+//+injects+it+into+the+repl|code-block|syntax|javascript|494831|然后，您可以简单地运行此脚本，它将包含foo作为变量|offset|length|style|CODE|494832|entityMap^0|0|0|J|3|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Another suggestion that I do not see here: try this little bit of code

<pre><code>#!/usr/bin/env node
'use strict';

const repl = require('repl');
const cli = repl.start({ replMode: repl.REPL_MODE_STRICT });
cli.context.foo = require('./foo'); // injects it into the repl
</code></pre>

Then you can simply run this script and it will include <code>foo</code> as a variable

blocks|key|495106|text|老答案|type|unstyled|depth|inlineStyleRanges|entityRanges|data|495107|type+test.js%7Cnode+-i|code-block|syntax|javascript|495108|将打开节点REPL，并将test.js中的所有行输入到REPL中，但由于某种原因，节点将在文件结束后退出|495109|另一个问题是，函数不会被提升。|495110|更好的答案|495111|node+-e+require('repl').start({useGlobal:true});+-r+./test2.js|495112|然后，在test2.js中声明的所有不带var的全局变量将在REPL中可用|495113|不确定为什么全局范围内的var+a不可用|495114|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|11|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

Old answer
<pre><code>type test.js|node -i
</code></pre>
Will open the node REPL and type in all lines from test.js into REPL, but for some reason node will quit after file ends
Another problem is, that functions will not be hoisted.
<h1>Better answer</h1>
<pre><code>node -e require('repl').start({useGlobal:true}); -r ./test2.js
</code></pre>
Then all globals declared without var within test2.js will be available in the REPL
not sure why var a in global scope will not be available

blocks|key|710729|text|还有一个官方的Node.js+REPL，也支持异步方法|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|710730|console.js|style|CODE|710731|const+repl+=+require('repl')
const+mongoose+=+require('mongoose')

const+run+=+async+()+=>+{
++++await+mongoose.connect(process.env.DB_URL,+{
++++++++useNewUrlParser:+true,
++++++++useUnifiedTopology:+true
++++})

++++const+r+=+repl.start(`(${process.env.NODE_EN})+⚡️+`)
++++r.context.User+=+require('./src/models/user.model')
++++r.context.mongoose+=+mongoose
++++console.log(`Ready+`);
}

run()|code-block|syntax|javascript|710732|启动控制台：|710733|NODE_OPTIONS=--experimental-repl-await+node+console.js|710734|User模型向控制台公开|710735|await+User.find({})|710736|source|710737|entityMap|0|LINK|mutability|MUTABLE|url|https://nodejs.org/api/repl.html|1|https://softwarebrothers.co/blog/node-js-repl-run-js-code-within-your-app-environment/^0|F|4|0|0|0|A|0|0|0|0|0|4|0|0|0|6|1|0^^$0|@$1|2|3|4|5|6|7|16|8|@]|9|@$A|17|B|18|1|19]]|C|$]]|$1|D|3|E|5|6|7|1A|8|@$A|1B|B|1C|F|G]]|9|@]|C|$]]|$1|H|3|I|5|J|7|1D|8|@]|9|@]|C|$K|L]]|$1|M|3|N|5|6|7|1E|8|@]|9|@]|C|$]]|$1|O|3|P|5|J|7|1F|8|@]|9|@]|C|$K|L]]|$1|Q|3|R|5|6|7|1G|8|@$A|1H|B|1I|F|G]]|9|@]|C|$]]|$1|S|3|T|5|J|7|1J|8|@]|9|@]|C|$K|L]]|$1|U|3|V|5|6|7|1K|8|@]|9|@$A|1L|B|1M|1|1N]]|C|$]]|$1|W|3|-4|5|6|7|1O|8|@]|9|@]|C|$]]]|X|$Y|$5|Z|10|11|C|$12|13]]|14|$5|Z|10|11|C|$12|15]]]]

There is an Official Node.js <a href="https://nodejs.org/api/repl.html" rel="nofollow noreferrer">REPL</a> that supports also async methods
<code>console.js</code>
<pre><code>const repl = require('repl')
const mongoose = require('mongoose')

const run = async () =&gt; {
 await mongoose.connect(process.env.DB_URL, {
 useNewUrlParser: true,
 useUnifiedTopology: true
 })

 const r = repl.start(`(${process.env.NODE_EN}) ⚡️ `)
 r.context.User = require('./src/models/user.model')
 r.context.mongoose = mongoose
 console.log(`Ready `);
}

run()
</code></pre>
Start the console:
<pre><code>NODE_OPTIONS=--experimental-repl-await node console.js
</code></pre>
<code>User</code> model its exposed to console
<pre><code>await User.find({})
</code></pre>
<a href="https://softwarebrothers.co/blog/node-js-repl-run-js-code-within-your-app-environment/" rel="nofollow noreferrer">source</a>

I have a script <code>foo.js</code> that contains some functions I want to play with in the REPL.

Is there a way to have node execute my script and then jump into a REPL with all the declared globals, like I can with <code>python -i foo.py</code> or <code>ghci foo.hs</code>?

How do I load my script into the node.js REPL?

Python

我有一个脚本foo.js，其中包含一些我想在REPL中使用的函数。有没有一种方法可以让node执行我的脚本，然后使用所有声明的全局变量跳到REPL中，就像我使用python -i foo.py或ghci foo.hs那样

问如何将我的脚本加载到node.js REPL中？
EN

回答 10

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问如何将我的脚本加载到node.js REPL中？EN

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问如何将我的脚本加载到node.js REPL中？
EN