I found a minified JavaScript file on the internet and I decided to re-format the whole code to a human-like code, but I got into the following doubt

file.js

// I figured out this function looks like RequireJS's `define` function
// but I couldn't find a source or resource to help me understand this code
// I'll appreciate some help, links to clearly docs 
// NOTE: I'm not interested in how RequireJS works, cause it's source code is huge,
// I just want to understand how the code bellow works. Maybe the source above documented
// 
//
// I think it's a output file from browserify or some tool like that
function define(modules, n, r) {

	// I'm not even 1% sure about these variable names
	// but I chaged to help me understand the minified code
	function define2(moduleName, a) {

		if (!n[moduleName]) {

			if (!modules[moduleName]) {
				var u = "function" == typeof require && require;
				if (!a && u) return u(moduleName, true);
				if (hasRequire) return hasRequire(moduleName, true);
				throw new Error("Cannot find module '" + moduleName + "'")
			}

			// Again I don't have any idea about these variable names
			var dependencies = n[moduleName] = {
				exports: {}
			};

			modules[moduleName][0].call(dependencies.exports, function(propertyName) {
				// This function block is simple, but the `.call` above is not.
				var moduleIndex = modules[moduleName][1][propertyName];
				return define2(moduleIndex ? moduleIndex : propertyName);
			}, dependencies, dependencies.exports, define, modules, n, r)
		}
		return n[moduleName].exports
	}

	// I still trying to figure it out
	var hasRequire = (typeof require === 'function') && require;

	for (hasRequire, moduleName = 0; moduleName < r.length; moduleName++) define2(r[moduleName]);
	return define2
}

// I could understand it a little
var allModulesMixed = {
	'hello': [function (require, module) {
		module.exports = function Hello() {
			console.log('Hi!');
		}
	}],
	6: [function (require, module) {
		var Hello = require('./hello');

		new Hello();
	}, {
		"./hello": 'hello'
	}]
};

define(allModulesMixed, {}, [6]);