如何使用带有coffeescript和requirejs的Node和Express？

问题描述

这里是我想要的。

• 使用快速web服务器的节点应用程序


• 使用coffeescript


• 在客户端（最终在服务器上）使用require.js

我已经能够找到为客户端调用coffeescript的建议方法是使用。这似乎需要使用jade helpers实际编译coffeescript例如

The recommended way I've been able to find of hooking up coffeescript for the client is to use connect-assets. This seems to require using jade helpers to actually compile coffeescript eg.

!=js('monalisa.js')

似乎编译monalisa.coffee并生成正确的< script> 标记。现在我想使用require.js，这里我绊倒。

seems to compile monalisa.coffee and generate the correct <script> tag. Now I want to use require.js and here I stumble. How do I ensure that connect-assets compiles everything correctly without using the jade helpers?

这是我相当简单的app.js：

Here's my fairly simple app.js:

require('coffee-script');

var express = require('express')
  , http = require('http')
  , path = require('path')
  , connectAssets = require('connect-assets');

var publicDir = path.join(__dirname, 'public');

var app = express();

app.configure(function(){
  app.set('port', process.env.PORT || 3000);
  app.set('views', __dirname + '/views');
  app.set('view engine', 'jade');

  app.use(express.favicon());
  app.use(express.logger('dev'));

  app.use(express.bodyParser());
  app.use( connectAssets() );
  app.use('/public', express.static(publicDir));

  app.use(express.logger());
  app.use(express.methodOverride());
  app.use(app.router);
});

app.configure('development', function(){
  app.use(express.errorHandler({
    dumpExceptions: true,
    showStack: true
  }));
});

app.get('/', require('./routes').index);
app.get('/monalisa', require('./routes/monalisa').monalisa);

http.createServer(app).listen(app.get('port'), function(){
  console.log("Express server listening on port " + app.get('port'));
});

推荐答案

我创建了一个包来帮助解决这个问题;它被称为。

I've created a package to help solve this problem; it's called connect-assets-jspaths.

自述：

npm install connect-assets -jspaths

• 注意，对CoffeeScript有一个依赖。






服务器端使用




• Note, there is a dependency on CoffeeScript.

assets = require "connect-assets"
jsPaths = require "connect-assets-jspaths"

# Snip ...

app.use assets()
# Exports the global function exportPaths() and jsUrl(); see below in View Helpers.
jsPaths assets

# Optionally, pass a log function to see progress
# jsPaths assets, console.log





观看更改并重新编译





现在您可以传递一些额外的回调，它将监视您的连接资产

Watch changes and re-compile

Now you can pass some additional callbacks in and it will monitor your connect assets directories for changes.

fileChangedCallback = (err, filePath) ->
    console.log "File Changed: #{filePath}"

jsPaths assets, console.log, fileChangedCallback, (err, watcher) ->
    console.log "Watcher initialized"

注意

此模块导出两个全局函数 exportPaths（）和 jsUrl（）。

This module exports two global functions exportPaths() and jsUrl().

// Using this in your view
!= exportPaths("jsPaths")

// Turns into this when rendered in production
<script type="text/javascript">
    var jsPaths = { "main", "/builtAssets/js/main.13819282742.js" /* snip all the other file paths */ };
</script>


// Using this in your view
- var mainJsPath = jsUrl("/js/main.js")
script(type="text/javascript", data-main="#{mainJsPath}", src="//cdnjs.cloudflare.com/ajax/libs/require.js/2.0.2/require.min.js")

// Turns into this when rendered in production
<script type="text/javascript" data-main="/builtAssets/js/main.13819282742.js" src="//cdnjs.cloudflare.com/ajax/libs/require.js/2.0.2/require.min.js"></script>





动态RequireJS路径





有一个变量与我们的requireJS友好的路径，我们可以在RequireJS配置中设置这些路径

Dynamic RequireJS Paths

Now that we have a variable with our requireJS friendly paths in it, we can set those paths in the RequireJS config

# Example main.coffee file in /assets/js folder

requirePaths =
  paths:
    jquery: "//cdnjs.cloudflare.com/ajax/libs/jquery/1.7.2/jquery.min"
    underscore: "//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.3.3/underscore-min"
    backbone: "//cdnjs.cloudflare.com/ajax/libs/backbone.js/0.9.2/backbone-min"
    text: "/js/lib/text"
    handlebars: "/js/lib/handlebars"

if jsPaths
  for own key, value of jsPaths
    # Fix up the lib references
    key = key.slice 4 if key.slice(0, 4) == "lib/"
    requirePaths.paths[key] = value

require.config
  paths: requirePaths.paths

  shim:
    jquery:
      exports: "$"
    underscore:
      exports: "_"
    backbone:
      deps: ["underscore", "jquery"]
      exports: "Backbone"

require ['app'], (App) ->
    new App().initialize()

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