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The compiler for writing next generation JavaScript.

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

• Giving developer time on the project. (Message us onTwitter orSlack for guidance!)
• Giving funds by becoming a sponsor onOpen Collective orGitHub (which goes to our Open Collective account)!

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

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 coalescingfunctiongreet(input){returninput??"Hello world";}

Out

functiongreet(input){returninput!=null ?input :"Hello world";}

Try it out at ourREPL.

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

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

For questions and support pleasejoin or open a GitHub Discussion, join ourSlack Community (you cansign up here for an invite), ask a question onStack Overflow, or ping us onBluesky.

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

Please read through ourCONTRIBUTING.md and fill out the issue template atbabel/issues!

Check out:

• Our#development Slack channel and say hi! (sign-up)
• Issues with thegood first issue andhelp wanted label. We suggest also looking at theclosed ones to get a sense of the kinds of issues you can tackle.

Some resources:

• OurCONTRIBUTING.md to get started with setting up the repo.
• Our discussions/notes/roadmap:babel/notes
• Our progress on TC39 proposals:babel/proposals
• Our blog which contains release posts and explanations:/blog
• Our videos page with talks about open source and Babel:/videos
• Ourpodcast

The Babel repo is managed as amonorepo that is composed of manynpm packages.

MIT