2021
https://webreflection.medium.com/js-classes-are-not-just-syntactic-sugar-28690fedf078
    https://habr.com/ru/company/ruvds/blog/554288/
https://habr.com/ru/post/538612/
2020
https://dmitripavlutin.com/javascript-classes-complete-guide/
    https://habr.com/ru/post/518386/