[javascript] Dynamic require in RequireJS, getting "Module name has not been loaded yet for context" error?

Is there a way to define a module that "dynamically" load other modules in RequireJS? If yes, how the optimizer (r.js) understands how/when a module has to be included?

For example, let dynModules a module which defines name/path pairs:

define([], function () {
    return ['moduleA', 'moduleB']; // Array of module names
});

Another module is going to load modules dynamically, based on the array. This will not work:

define(['dyn_modules'], function (dynModules) {
    for(name in dynModules) {   
        var module = require(path); // Call RequireJS require
    }

    // ...
});

... gives me:

Uncaught Error: Module name "moduleA" has not been loaded yet for context: _. Use require([]) http://requirejs.org/docs/errors.html#notloaded

I can solve the error, but it's not "dynamic" anymore:

define(['dyn_modules', 'moduleA', 'moduleB'], function (dynModules) {
    for(name in dynModules) {   
        var module = require(path); // Call RequireJS require
    }

    // ...
});

Answering to myself. From the RequireJS website:

//THIS WILL FAIL
define(['require'], function (require) {
    var namedModule = require('name');
});

This fails because requirejs needs to be sure to load and execute all dependencies before calling the factory function above. [...] So, either do not pass in the dependency array, or if using the dependency array, list all the dependencies in it.

My solution:

// Modules configuration (modules that will be used as Jade helpers)
define(function () {
    return {
        'moment':   'path/to/moment',
        'filesize': 'path/to/filesize',
        '_':        'path/to/lodash',
        '_s':       'path/to/underscore.string'
    };
});

The loader:

define(['jade', 'lodash', 'config'], function (Jade, _, Config) {
    var deps;

    // Dynamic require
    require(_.values(Config), function () {
        deps = _.object(_.keys(Config), arguments);

        // Use deps...
    });
});