ng-example-module.js

define(function(require){
	'use strict';

	var angular = require('angular');

	angular.module('example', [])
		.service('example-service', require('./ng-example-service'))
        // invoking service straight away so that it initialises
		.run(['example-service', function(/*popoutService*/){
		}]);
});

ng-example-service.js

define(function(require){
    'use strict';
    
    function foo($compile, $rootScope){
    }
    
    return ['$compile', '$rootScope', foo]
});