babel/babel

🐠 Babel is a compiler for writing next generation JavaScript.

The compiler for writing next generation JavaScript. Supporting Babel Babel (pronounced ["babble"](https://soundcloud.com/sebmck/how-to-pronounce-babel)) is a community-driven project used by many companies and projects, and is maintained by a group of [volunteers](https://babeljs.io/team). If you'd like to help support the future of the project, please consider: - Giving developer time on the project. (Message us on [Twitter](https://twitter.com/babeljs) or [Slack](https://slack.babeljs.io/) for guidance!) - Giving funds by becoming a sponsor on [Open Collective](https://opencollective.com/babel) or [GitHub](https://github.com/sponsors/babel/) (which goes to our Open Collective account)! ## Sponsors Our top sponsors are shown below! [[Become a sponsor](https://opencollective.com/babel#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** ```js // ES2020 nullish coalescing function greet(input) { return input ?? "Hello world"; } ``` **Out** ```js function greet(input) { return input != null ? input : "Hello world"; } ``` Try it out at our [REPL](https://babel.dev/repl#?browsers=defaults&loose=true&code_lz=GYVwdgxgLglg9mABAcwE4FN1QBQzABxCgEpEBvAKEUQyhFST0KkQH5XEAiACXQBs-cRAHc4qPgBNOAbgoBfIA&shippedProposals=true&sourceType=script&lineWrap=true&presets=env%2Cenv&prettier=true&forceAllTransforms=true). ## FAQ ### Who maintains Babel? Mostly a handful of volunteers, funded by you! Please check out our [team page](https://babeljs.io/team)! ### Is there a Babel song? I'm so glad you asked: [Hallelujah —— In Praise