Require Light

gistfile1.js

(function(global) {
    var serviceRegistrar = {};

    function resolve(serviceName) {
        if (typeof serviceRegistrar[serviceName] === 'undefined') {
            throw new Error('Service "' + serviceName + '" cannot be instantiated.');
        }
        return serviceRegistrar[serviceName];
    }

    function require(args, cb) {
        var resolvedArgs = [];
        for(var i = 0, len = args.length; i< len; i++) {
            resolvedArgs.push(resolve(args[i]));
        }
        cb.apply(this, resolvedArgs);
    };

    function define(serviceName, service) {
        if (typeof serviceRegistrar[serviceName] !== 'undefined') {
            throw new Error('The Service with the same name "' + serviceName + '" has been already registered.');
        }
        serviceRegistrar[serviceName] = service;
    };

    global.require2 = require;
    global.define2 = define;

})(this);

(function(global) {
    var NAMESPACE_SEPARATOR = global.NAMESPACE_SEPARATOR || '.';

    var deps = {};

    function getNamespaceParts(namespace){
        return namespace.split(NAMESPACE_SEPARATOR);
    }

    function require(namespace) {
        var nsParts = getNamespaceParts(namespace);
        var func = deps;
        for (var i = 0, len = nsParts.length; i < len; i++) {
            var func = func[nsParts[i]];
            if (typeof func === 'undefined') {
                throw new Error('Required namespace has not been defined.');
            }
        }
        return func;
    };

    function define(namespace, cb) {
        var nsParts = getNamespaceParts(namespace);
        var ns = deps;
        for (var i = 0, len = nsParts.length - 1; i < len; i++) {
            ns[nsParts[i]] = ns[nsParts[i]] || {};
            ns = ns[nsParts[i]];
        }
        ns[nsParts[nsParts.length - 1]] = cb;
    };

    global.require = require;
    global.define = define;

})(this);