Decorator function example

gistfile1.txt

/**
         * Observer function / decorator
         */
        function observer(arg1, arg2) {
            if (typeof arg1 === "string")
                throw new Error("Store names should be provided as array");
            if (Array.isArray(arg1)) {
                // component needs stores
                if (!arg2) {
                    // invoked as decorator
                    return function(componentClass) {
                        return observer(arg1, componentClass);
                    }
                } else {
                    return createStoreInjector(arg1, observer(arg2));
                }   
            }
    }