> Just look at the many open source JS libraries out in the wild–how many of them use prototype objects well? If they use OOP, it’s usually class-based, and it’

> Just look at the many open source JS libraries out in the wild–how many of them use prototype objects well? If they use OOP, it’s usually class-based, and it’s pretty ugly, too. Worth mentioning some that do use prototype objects, such as Closure Library https://github.com/google/closure-library https://github.com/google/closure-library