Babel vs Scala.js: What are the differences?

Babel: Use next generation JavaScript, today. Babel will turn your ES6+ code into ES5 friendly code, so you can start using it right now without waiting for browser support; Scala.js: *The Scala to JavaScript compiler *. It is a safer way to build robust front-end web applications. With it, typos and type-errors are immediately caught and shown to you in your editor, without even needing to compile your code. Refactor any field or method with ease, with the confidence that if you mess it up the editor will tell you immediately.

Babel and Scala.js can be primarily classified as "JavaScript Compilers" tools.

Some of the features offered by Babel are:

• Array comprehensions
• Arrow functions
• Async functions

On the other hand, Scala.js provides the following key features:

• Strong typing
• optimizes your Scala code into highly efficient JavaScript
• use any JavaScript library right from your Scala.js code

Babel and Scala.js are both open source tools. It seems that Babel with 34.1K GitHub stars and 3.69K forks on GitHub has more adoption than Scala.js with 3.71K GitHub stars and 325 GitHub forks.

Instagram, 9GAG, and Intuit are some of the popular companies that use Babel, whereas Scala.js is used by MentorMyself, Seventh Sense, and TheDocking.Space. Babel has a broader approval, being mentioned in 1234 company stacks & 3698 developers stacks; compared to Scala.js, which is listed in 6 company stacks and 4 developer stacks.