Simple Javascript stack library

stack.js

/**
 * stack.js
 * (c) 2015 Azamshul Azizy
 * 
 * [description]
 * @param  {[type]} factory [description]
 * @return {[type]}         [description]
 */
(function(stackjs) {
	// if (typeof(define) === "function" && typeof(define.amd) !== "undefined") {
	// 	define(["jquery"], factory);
	// } else if (typeof(jQuery) !== "undefined") {
	// 	factory(jQuery);
	// } else if (typeof(jquery) !== "undefined") {
	// 	factory(jquery);
	// } else if (typeof($) !== "undefined") {
	// 	factory($);
	// }
	// })(function($jquery) {;;
	console.log("1");
	if (typeof(define) === "function" && typeof(define.amd) !== "undefined") {
		console.log("require");
		define([], stackjs);
	} else {
		console.log("others");
		stackjs();
	}
})(function() {;;
	console.log("2");
	var __stacks = [];
	var __occupiedExecuted = false;
	var __occupied = function() {};
	var __cleared = function() {};
	var __increased = function() {};
	var __decreased = function() {};
	var __execOccupied = function() {
		console.log("__execOccupied");
		__occupiedExecuted = true;
		__occupied();
	};
	var __execCleared = function() {
		console.log("__execCleared");
		__cleared();
		__execOccupied = false;
	};
	var __execIncreased = function() {
		console.log("__execIncreased");
		if (!__occupiedExecuted) {
			__execOccupied();
		}
		__increased();
	};
	var __execDecreased = function() {
		console.log("__execDecreased");
		__decreased();
		if (__stacks.length <= 0) {
			__execCleared();
		}
	};
	var o = {};
	o.occupied = function(cb) {
		if (typeof(cb) === "function") {
			__occupied = cb;
		}
		return o;
	};
	o.cleared = function(cb) {
		if (typeof(cb) === "function") {
			__cleared = cb;
		}
		return o;
	};
	o.increased = function(cb) {
		if (typeof(cb) === "function") {
			__increased = cb;
		}
		return o;
	};
	o.decreased = function(cb) {
		if (typeof(cb) === "function") {
			__decreased = cb;
		}
		return o;
	};
	o.push = function(s) {
		if (s !== undefined) {
			__stacks.push(s);
			__execIncreased();
		}
		return o;
	};
	o.pop = function() {
		__stacks.pop();
		if (__stacks.length > 0) {
			__execDecreased();
		}
		return o;
	};
	o.put = function(s) {
		if (s !== undefined) {
			var moved = false;
			for (var i = __stacks.length; i >= 0; i--) {
				if (__stacks[i] === s) {
					__stacks.splice(i, 1);
					moved = true;
				}
			}
			__stacks.push(s);
			if (!moved) {
				__execIncreased();
			}
		}
		return o;
	};
	o.clear = function() {
		var spliced = false;
		for (var i = __stacks.length; i >= 0; i--) {
			__stacks.splice(i, 1);
			spliced = true;
		}
		if (spliced) {
			__execDecreased();
		}
		return o;
	};
	o.remove = function(s) {
		if (s !== undefined) {
			for (var i = __stacks.length; i >= 0; i--) {
				if (__stacks[i] === s) {
					__stacks.splice(i, 1);
					__execDecreased();
				}
			}
		}
		return o;
	};
	o.removeFirst = function(s) {
		if (s !== undefined) {
			var idx = -1;
			for (var i = __stacks.length; i >= 0; i--) {
				if (__stacks[i] === s) {
					idx = i;
				}
			}
			if (idx >= 0) {
				__stacks.splice(i, 1);
				__execDecreased();
			}
		}
		return o;
	};
	o.removeLast = function(s) {
		if (s !== undefined) {
			for (var i = __stacks.length; i >= 0; i--) {
				if (__stacks[i] === s) {
					__stacks.splice(i, 1);
					__execDecreased();
					return o;
				}
			}
		}
		return o;
	};
	console.log(o);
	return o;
});