Modern JavaScript (ES2020-ES2024)

Latest ECMAScript features for cleaner, more expressive code.

ES2024 Features

Object.groupBy / Map.groupBy

const products = [
  { name: 'Apple', category: 'fruit', price: 1.5 },
  { name: 'Banana', category: 'fruit', price: 0.75 },
  { name: 'Carrot', category: 'vegetable', price: 0.5 },
  { name: 'Broccoli', category: 'vegetable', price: 2.0 },
];