启动node.js repl的脚本

Is there a way configure node.js's repl? I want to require jquery and underscore automatically whenever the repl starts. Is there a file (noderc?) that node.js loads when it starts the repl?

有没有办法配置node.js的repl？我想在repl启动时自动要求jquery和下划线。是否有一个文件（noderc？）node.js在启动repl时加载？

The equivalent in Python is to edit ~/.ipython/ipy_user_conf.py with:

Python中的等价物是使用以下命令编辑〜/ .ipython / ipy_user_conf.py：

import_mod('sys os datetime re itertools functools')

5 个解决方案

#1

I don't know of any such configuration file, but if you want to have modules foo and bar be available in a REPL, you can create a file myrepl.js containing:

我不知道任何这样的配置文件，但是如果你想在REPL中使用模块foo和bar，你可以创建一个包含以下内容的文件myrepl.js：

var myrepl = require("repl").start();
["foo", "bar"].forEach(function(modName){
    myrepl.context[modName] = require(modName); 
});

and you when you execute it with node myrepl.js you get a REPL with those modules available.

当你使用节点myrepl.js执行它时，你得到一个带有这些模块的REPL。

Armed with this knowledge you can put #!/path/to/node at the top and make it executable directly, or you could modify your version of the repl.js module (source available at https://github.com/joyent/node/blob/master/lib/repl.js for inspection) or whatever :)

有了这些知识，您可以将＃！/ path / to / node放在顶部并使其直接执行，或者您可以修改您的repl.js模块版本（可从https://github.com/joyent/获取源代码） node / blob / master / lib / repl.js用于检查）或者其他:)

#2

I tried this today but .start required an argument. Also I think the useGlobal:true was important. I wound up using:

我今天尝试了这个但是.start需要一个参数。另外我认为useGlobal：true很重要。我结束了：

var myrepl=require('repl').start({useGlobal:true});
myrepl.context['myObj']=require('./myObject');

Saving this code in test.js I could do a node test.js then access myObj in REPL.

在test.js中保存此代码我可以执行节点test.js然后在REPL中访问myObj。

#3

Might be a newer feature of Node.js (since this question is four years old), but you can load and save repl history like ipython.

可能是Node.js的一个新功能（因为这个问题已经有四年了），但您可以像ipython一样加载和保存repl历史记录。

.break - While inputting a multi-line expression, sometimes you get lost or just don't care about completing it. .break will start over.
.clear - Resets the context object to an empty object and clears any multi-line expression.
.exit - Close the I/O stream, which will cause the REPL to exit.
.help - Show this list of special commands.
.save - Save the current REPL session to a file
    .save ./file/to/save.js
.load - Load a file into the current REPL session.
    .load ./file/to/load.js

I can't figure out how to execute this automatically when starting the shell, but .load something is convenient enough for me at the moment.

我无法弄清楚如何在启动shell时自动执行此操作，但是。对于我来说，.load足够方便。

#4

Feb 2017 - whilst I agree with the accepted answer, wished to add a little more commentary here.

2017年2月 - 虽然我同意接受的答案，但希望在此添加更多评论。

Like to setup as follows (from home directory on my Mac)

喜欢设置如下（从我Mac上的主目录）

.node ├── node_modules │ ├── lodash │ └── ramda ├── package.json └── repl.js

.node├──node_modules│├──lodash│└──ramda├──package.json└──repl.js

Then repl.js may look like as follows:

然后repl.js可能如下所示：

const repl = require('repl');

let r = repl.start({
  ignoreUndefined: true,
  replMode: repl.REPL_MODE_STRICT
});

r.context.lodash = require('lodash');
r.context.R = require('ramda');
// add your dependencies here as you wish..

And finally, put an alias into your .bashrc or .zshrc file etc (depending on your shell prefs) - something like:

最后，在你的.bashrc或.zshrc文件等中添加一个别名（取决于你的shell prefs） - 类似于：

alias noder='node ~/.node/repl.js'

别名noder ='node~ / .node / repl.js'

Now, to use this configuration, you just have to type noder from the command line. Above, I also specified that I'd always like to be in strict mode, and do not want undefined printed to the console for declarations etc.

现在，要使用此配置，您只需从命令行键入noder即可。上面，我还指出我总是喜欢处于严格模式，并且不希望未定义打印到控制台以进行声明等。

For up-to-date information on repl and in particular repl.start options see here

有关repl的最新信息，特别是repl.start选项，请参见此处

#5

Keeping things simple here's what I clabbered up.

保持简单，这就是我的抨击。

repl.js:

repl.js：

// things i want in repl
global.reload = require('require-nocache')(module) // so I can reload modules as I edit them
global.r = require('ramda') // <3 http://ramdajs.com/
// launch, also capture ref to the repl, in case i want it later
global.repl = require('repl').start()

I can invoke this with node repl which feels right, and I don't care about globals, because I am just messin' around in the repl.

我可以使用感觉正确的节点repl调用它，我不关心全局变量，因为我只是在repl中乱码。

#1