Prefer ES6 classes over ES5 functions

☑️ Topic: Classes

☑️ Idea: ES6 is better than ES5 for readable class inheritance, construction and methods.

☑️ Benefits: Readability, Maintainability.

☑️ Guideline: Use small functions when you need something simple and use ES6 classes when you need larger and more complex objects.


// BAD
const Animal = function(age) {
  if (!(this instanceof Animal)) {
    throw new Error("Instantiate Animal with `new`");
  }
  this.age = age;
};
Animal.prototype.move = function move() {};


// GOOD
class Animal {
  constructor(age) {
    this.age = age;
  }
  move() {/* ... */}
}