Bublé

Bublé is a fast ES2015+ to ES5 compiler that requires zero configuration. Version 0.20.0 is current but in maintenance mode. It was designed before modern browsers supported ES2015, and now only recommended for IE11 compatibility. Unlike Babel, Bublé does not require plugins or presets, making it simpler but less extensible. It supports ES2015 features like arrow functions, template literals, destructuring, and let/const, plus some ES2016/ES2017 features (exponentiation, async/await). No new features will be added; only bugfixes.