define('app', ['consts'], function(consts) {
    'use strict';

    class _GameMenu {
        constructor() {
            this.gameMenu = consts.DOC.createElement('div');
            this.gameMenu.id = 'gameMenu';
        }
        getParent() {
            return window.document.getElementById('parentContainer');
        }
        appendMenu(parent) {
            parent.appendChild(this.gameMenu);
        }
    }

    return {
        GameMenu: _GameMenu
    }
});

@@ -16,16 +16,27 @@
 'consts'
+, 'buttons'
 %5D, funct
@@ -45,16 +45,25 @@
 n(consts
+, buttons
 ) %7B%0A    
@@ -440,44 +440,530 @@
     
-return %7B%0A        GameMenu: _GameMenu
+class _StartButtons %7B%0A        constructor() %7B%0A            this.start = buttons.START;%0A            this.load = buttons.LOAD;%0A            this.exit = buttons.EXIT;%0A        %7D%0A        appendStartButton(parent) %7B%0A            parent.appendChild(this.start);%0A        %7D%0A        appendLoadButton(parent) %7B%0A            parent.appendChild(this.load);%0A        %7D%0A        appendExitButton(parent) %7B%0A            parent.appendChild(this.exit);%0A        %7D%0A    %7D%0A%0A    return %7B%0A        GameMenu: _GameMenu,%0A        StartButtons: _StartButtons
 %0A   

Improve app