coffeescript/documentation/sections/why_coffeescript.md

Why CoffeeScript When There’s ES6?

CoffeeScript introduced many new features to the JavaScript world, such as => and destructuring and classes. We are happy that ECMA has seen their utility and adopted them into ECMAScript.

CoffeeScript’s intent, however, was never to be a superset of JavaScript. One of the guiding principles of CoffeeScript has been simplicity: not just removing JavaScript’s “bad parts,” but providing an elegant, concise syntax that eschews unnecessary punctuation whenever possible, to make code easier to read and reason about. This benefit of CoffeeScript remains, even in an ES2015+ world.