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babel

The compiler for writing next generation JavaScript.

Gitpod ready-to-code

v7 npm Downloads v6 npm Downloads

GitHub CI Status Coverage Status Slack Status Follow on Twitter

Supporting Babel

Backers on Open Collective Sponsors on Open Collective Business Strategy Status

Babel (pronounced "babble") is a community-driven project used by many companies and projects, and is maintained by a group of volunteers. If you'd like to help support the future of the project, please consider:

Sponsors

Our top sponsors are shown below! [Become a sponsor]

Intro

Babel is a tool that helps you write code in the latest version of JavaScript. When your supported environments don't support certain features natively, Babel will help you compile those features down to a supported version.

In

// ES2020 nullish coalescing
function greet(input) {
  return input ?? "Hello world";
}

Out

function greet(input) {
  return input != null ? input : "Hello world";
}

Try it out at our REPL.

FAQ

Who maintains Babel?

Mostly a handful of volunteers, funded by you! Please check out our team page!

Is there a Babel song?

I'm so glad you asked: Hallelujah —— In Praise of Babel by @angus-c, audio version by @swyx. Tweet us your recordings!

Looking for support?

For questions and support please join our Slack Community (you can sign up here for an invite), ask a question on Stack Overflow, or ping us on Twitter.

Where are the docs?

Check out our website: babeljs.io, and report issues/features at babel/website.

Want to report a bug or request a feature?

Please read through our CONTRIBUTING.md and fill out the issue template at babel/issues!

Want to contribute to Babel?

Check out:

Some resources:

How is the repo structured?

The Babel repo is managed as a monorepo that is composed of many npm packages.

License

MIT