JS Encontre todas as propriedades da janela personalizadas
Object.keys(window).filter(x => typeof(window[x]) !== 'function' &&
Object.entries(
Object.getOwnPropertyDescriptor(window, x)).filter(e =>
['value', 'writable', 'enumerable', 'configurable'].includes(e[0]) && e[1]
).length === 4)
Thankful Tuatara