Alternate requirejs define & require: define(function(require) { … })

The usual define "syntax":

define(['module/first'], function (firstModule) {
   //Module code with a dependency on module/first goes here.
});

The alternate define "syntax":

<script data-main="app/config" src="assets/js/libs/require.js"></script>

file: config.js:

require.config({
   paths: {
      jquery:      '../assets/js/libs/jquery'
   }
});
require(['app']);

file: app.js:

define(function(require) {
     var FirstModule = require('modules/first');
     //Module code with a dependency on module/first goes here.

@reference_1_stackoverflow
Why use alternate requirejs define: define(function(require) { … }

@reference_2_stackoverflow
RequireJS: require a module return a function instead of a object

@reference_3_requirejs.org
Define a Module as a Function