librarySystem with dependencies

librarySystem.js

(function(){
    const libraryStorage = {}

    function librarySystem(libraryName, array, callback) {
        if (arguments.length > 1) {
            if (array.length > 0) {
                let libraryDepedencies = array.map(function(arg) {
                    return libraryStorage[arg];
                })
                libraryStorage[libraryName] = callback.apply(null, libraryDepedencies);
            } else {
                libraryStorage[libraryName] = callback();
            }
        } else {
            return libraryStorage[libraryName];
        }

    }
    window.librarySystem = librarySystem;

})()