AMD-factory-with-require.js

// Typical AMD factory that returns a value, but uses an r-value (sync) require(),
// rather than a long, awkward dependency list.
// You cannot use module.exports or exports to declare the module:
(function (define){
define(function (require) {
"use strict";

	var mod = require('pkb/modA');

	return {
		delegate: function () {}
	};

});
}(
	typeof define == 'function' && define.amd 
		? define 
		: function (factory) { module.exports = factory(require); }
));

AMD-wrapped-CJS.js

// More CJS-like factory that uses module.exports to declare a value.
// You cannot declare the module by returning a value:
(function (define){
define(function (require, exports, module) {
"use strict";

	var mod = require('pkb/modA');

	module.exports = {
		delegate: function () {}
	};

});
}(
	typeof define == 'function' && define.amd 
		? define 
		: function (factory) { factory(require, exports, module); }
));

dual-purpose.js

// As long as modules are never declared as falsey values, this 
// flavor will support typical AMD factories and CJS-like factories:
// HT to @bryanforbes
(function (define){
define(function (require, exports, module) {
"use strict";

	var mod = require('pkb/modA');

	module.exports = {
		delegate: function () {}
	};
	// could also return here instead of using module.exports

});
}(
	typeof define == 'function' && define.amd 
		? define 
		: function (factory) { module.exports = factory(require, exports, module) || exports; }
));