WebStorm will not hit break points inside of an IIFE with parameters. The following example shows an example that won't work followed by an example that will work.

inner-iife-breakpoints-webstorm-fail

////////////////////////////////////////////////////////////////////////////////
// NOTE: This specific use case had leverages AngularJS and RequireJS so it's 
// possible these had something to do with it as well, but it seems that there's 
// an issue with breakpoints and V8: 
//
// * http://mariuszprzydatek.com/2013/07/21/angularjs-karma-and-debugging-unit-tests-in-webstorm-or-intellij-idea/
// * http://www.andrejkoelewijn.com/blog/2013/05/07/debugging-with-webstorm-and-karma/
// * http://tommytcchan.com/blog/2013/03/18/example-how-to-set-up-debugging-with-karma-formerly-testacular-and-webstorm/
////////////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////////////
// FAIL
// Note the use of the params `define` & `angular`
///////////////////////////////////////////////////////////////////////////////

// breakpoint not hit if put inside login(). breakpoint ends up being hit on last line of IIFE wrapper
(function(define, angular)
{
	"use strict";

	var dependencies = [
	];

	/**
	 * Register the LoginController class with RequireJS.
	 */
	define( dependencies, function()
	{
		var

			LoginController = function($scope)
			{
				var

					login = function()
					{
						console.log("login");
					};

			};

		return [ "$scope", LoginController ];

	});

}(define, angular));

////////////////////////////////////////////////////////////////////////////////
// SUCCESS
// Note the removal of the params `define` & `angular`
///////////////////////////////////////////////////////////////////////////////

// breakpoint not hit if put inside login(). breakpoint ends up being hit on last line of IIFE wrapper
(function()
{
	"use strict";

	var dependencies = [
	];

	/**
	 * Register the LoginController class with RequireJS.
	 */
	define( dependencies, function()
	{
		var

			LoginController = function($scope)
			{
				var

					login = function()
					{
						console.log("login");
					};

			};

		return [ "$scope", LoginController ];

	});

}());