ECMAScript 2024: A New Era of JavaScript

Let’s talk about ECMAScript 2024, or ES15 — the latest and greatest in JavaScript! It’s packed with cool new features aimed at boosting productivity, making your code cleaner, and improving performance. Ready to dive into the highlights?

1. Top-Level Await

Top-level await, a significant addition to ECMAScript 2024, revolutionizes asynchronous programming in JavaScript. It allows you to use the await keyword directly at the top level of a module, eliminating the need for complex asynchronous patterns like IIAFEs or promise chaining.

Before Top-Level Await:

Prior to this feature, asynchronous operations were typically handled within asynchronous functions. To execute asynchronous code at the module’s top level, you’d often resort to IIAFEs:

(async () => {
  const data = await fetch('https://api.example.com/data').then(response => response.json());
  console.log(data);
})();

This approach, while functional, can introduce unnecessary boilerplate and make code less readable.

With Top-Level Await:

The introduction of top-level await simplifies this process:

const data = await fetch('https://api.example.com/data').then(response => response.json());
console.log(data);