Introduction

Metaprogramming is a way to extend a program at runtime; it’s the ability to write code that writes code.

Although it’s one of the newest and most complex features of JavaScript, it is also one of its most powerful features. You may use metaprogramming to dynamically extend code where you feel fit.

Extending classes

JavaScript classes are open, meaning you can extend them without using inheritance. Therefore, you’re not limited to using the facilities provided ...