# qooxdoo

Home » Manual (v2.0.2) » qx.Server » RequireJS Support

# RequireJS Support

Note

experimental

It is possible to use the generator to build a RequireJS compatible library using qooxdoo. Here is the description of RequireJS taken from the project's website:

> "RequireJS is a JavaScript file and module loader. It is optimized for in-browser use, but it can be used in other JavaScript environments, like Rhino and Node. Using a modular script loader like RequireJS will improve the speed and quality of your code."

> —http://requirejs.org/

A couple of steps are necessary to accomplish this:

> - You need a class which represents the common interface you want to offer as a require.js module
> - and a customized generator config file to build your library.

## Representable interface

Let's assume you've implemented a class like the following:

    qx.Bootstrap.define("my.super.Dog", {
      extend : Object,
      members : {
        bark : function() {
          alert("BARK!");
        }
      }
    });

You want to export this class as a module usable with RequireJS. Usage could look something like this:

    require("dog.js", function(dog) {
      dog.bark();
    });

That's all you need to take care of on the JavaScript side.

## Config file

There is some more work to be done on the config side (this might change at some point). Here is a sample config:

    {
      "let" :
      {
        "APPLICATION"  : "library",
        "QOOXDOO_PATH" : "../..",
      },

        "build" :
        {
          "library" : [{
            "manifest" : "${QOOXDOO_PATH}/framework/Manifest.json"
          }],

          "include" : [
            "my.super.Dog"
          ],

          "environment" : {
            "qx.export" : {"dog" : "my.super.Dog"}
          },

          "compile-options" :
          {
            "paths" :
            {
              "file" : "dog.js",
              "app-root" : ".",
              "loader-template" : "${QOOXDOO_PATH}/tool/data/generator/require.loader.tmpl.js"
            },
            "uris" :
            {
              "script"   : ".",
              "resource" : "."
            },
            "code" :
            {
              "format"   : true,
              "optimize" : [ "variants", "base", "string", "privates", "variables" ],
              "except"   : []
            }
          },

          "compile" : { "type" : "build" }
        }
      }
    }

We won't go much into detail here because most of this is covered by the Generator Config Keys page and others. But there are two things you should be aware of. First, a new loader template is set for the compile step. There's a special loader template for RequireJS which uses the other important thing: The `qx.export` environment key. It holds a map specifying which class should be exported as a module. Running the `build` job will then generate a RequireJS-compatible file named `dog.js` which exposes the `dog` class as a module.