4521204ea0
* master: (222 commits) Set correct methods name Use toPropertyKey in the "decorate" helper Allow function types in type params within arrow return types (#8954) Fix message when plugin of a wrong type is passed (#8950) rename colliding let bindings with for loop init (#8937) edge incomplete support for arrow destructuring (babel #8349) (#8926) fix single-arg async arrows when retainLines=true (#8868) [flow] Explicit inexact objects with `...` (#8884) Update preset-env data (#8898) Treat break inside block inside loop (#8914) fixed "source map" formatting in comment (#8878) [skip ci] fix typo in contributing guidelines (#8901) [skip ci] fix: Expression x === 'y' && '' should not evaluate to undefined. (#8880) fixed an extra word Fixes #8865 (#8866) v7.1.4 v7.1.3 Bump Babel deps (#8770) flow-bin@0.82.0 (#8832) Insertafter jsx fix (#8833) ... # Conflicts: # packages/babel-parser/src/tokenizer/index.js # packages/babel-parser/test/fixtures/experimental/class-private-properties/failure-numeric-literal/options.json # packages/babel-parser/test/fixtures/experimental/pipeline-operator/invalid-proposal/options.json
The compiler for writing next generation JavaScript.
Supporting Babel
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:
- Giving developer time on the project. (Message us on Twitter or Slack for guidance!)
- Giving funds by becoming a sponsor (see below)!
Open Collective Sponsors
Become a sponsor and get your logo on our README on Github with a link to your site. [Become a sponsor]
Patreon Sponsors
Become a sponsor and get your logo on our README on Github with a link to your site. [Become a sponsor]
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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
// ES2015 arrow function
[1, 2, 3].map((n) => n + 1);
Out
[1, 2, 3].map(function(n) {
return n + 1;
});
Try it out at our REPL.
FAQ
Who maintains Babel?
Mostly a handful of volunteers! Please check out our team page!
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.
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!
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 our CONTRIBUTING.md to get started with setting up the repo.
- If you have already joined Slack, join our #development channel and say hi!
- Check out the issues with the good first issue and help wanted label. We suggest also looking at the closed ones to get a sense of the kinds of issues you can tackle.
- Our discussions/notes/roadmap: babel/notes
- Our progress on TC39 proposals: babel/proposals
How is the repo structured?
The Babel repo is managed as a monorepo that is composed of many npm packages.