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babel

The compiler for writing next generation JavaScript.

Travis StatusCircleCI StatusCoverage StatusSlack Statusnpm Downloads

Supporting Babel

Backers on Open CollectiveSponsors on Open CollectiveBusiness 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:

  • 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]

Silver

Bronze

Mike Sherov

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){returnn+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 visit 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.

License

MIT

About

🐠 Babel is a compiler for writing next generation JavaScript.

babeljs.io/

Resources

Readme
MIT license

Code of conduct

Code of conduct

Contributing

Contributing
Activity
Custom properties

Stars

0 stars

Watchers

0 watching

Forks

0 forks
Report repository

Releases

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Used by

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
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(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
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// Re-run on dynamic content
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observer.observe(document.body, { childList: true, subtree: true });
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} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
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Repository files navigation
babel

The compiler for writing next generation JavaScript.

Travis StatusCircleCI StatusCoverage StatusSlack Statusnpm Downloads
Supporting Babel
Backers on Open CollectiveSponsors on Open CollectiveBusiness 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:
  • 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]
Silver
Bronze
Mike Sherov
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){returnn+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 visit 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.
License
MIT
About
🐠 Babel is a compiler for writing next generation JavaScript.
babeljs.io/
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
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';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
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Repository files navigation
babel

The compiler for writing next generation JavaScript.

Travis StatusCircleCI StatusCoverage StatusSlack Statusnpm Downloads
Supporting Babel
Backers on Open CollectiveSponsors on Open CollectiveBusiness 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:
  • 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]
Silver
Bronze
Mike Sherov
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){returnn+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 visit 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.
License
MIT
About
🐠 Babel is a compiler for writing next generation JavaScript.
babeljs.io/
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
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Makefile
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Repository files navigation
babel

The compiler for writing next generation JavaScript.

Travis StatusCircleCI StatusCoverage StatusSlack Statusnpm Downloads
Supporting Babel
Backers on Open CollectiveSponsors on Open CollectiveBusiness 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:
  • 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]
Silver
Bronze
Mike Sherov
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){returnn+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 visit 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.
License
MIT
About
🐠 Babel is a compiler for writing next generation JavaScript.
babeljs.io/
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
GitHub - zambezi/babel: :tropical_fish: Babel is a compiler for writing next generation JavaScript. · GitHub
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.eslintignore
.eslintignore
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.eslintrc.json
.flowconfig
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.gitattributes
.gitattributes
.gitignore
.gitignore
.prettierignore
.prettierignore
.prettierrc
.prettierrc
.travis.yml
.travis.yml
CHANGELOG.md
CHANGELOG.md
CODE_OF_CONDUCT.md
CODE_OF_CONDUCT.md
CONTRIBUTING.md
CONTRIBUTING.md
Gulpfile.js
Gulpfile.js
LICENSE
LICENSE
Makefile
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README.md
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babel.config.js
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babel.sublime-project
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codecov.yml
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eslint-local-rules.js
eslint-local-rules.js
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lerna.json
package.json
package.json
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Repository files navigation
babel

The compiler for writing next generation JavaScript.

Travis StatusCircleCI StatusCoverage StatusSlack Statusnpm Downloads
Supporting Babel
Backers on Open CollectiveSponsors on Open CollectiveBusiness 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:
  • 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]
Silver
Bronze
Mike Sherov
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){returnn+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 visit 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.
License
MIT
About
🐠 Babel is a compiler for writing next generation JavaScript.
babeljs.io/
Resources
Readme
MIT license
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Contributing
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
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babel

The compiler for writing next generation JavaScript.

Travis StatusCircleCI StatusCoverage StatusSlack Statusnpm Downloads
Supporting Babel
Backers on Open CollectiveSponsors on Open CollectiveBusiness 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:
  • 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]
Silver
Bronze
Mike Sherov
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){returnn+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 visit 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.
License
MIT
About
🐠 Babel is a compiler for writing next generation JavaScript.
babeljs.io/
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Used by
Contributors
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
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Repository files navigation
babel

The compiler for writing next generation JavaScript.

Travis StatusCircleCI StatusCoverage StatusSlack Statusnpm Downloads
Supporting Babel
Backers on Open CollectiveSponsors on Open CollectiveBusiness 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:
  • 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]
Silver
Bronze
Mike Sherov
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){returnn+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 visit 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.
License
MIT
About
🐠 Babel is a compiler for writing next generation JavaScript.
babeljs.io/
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
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Used by
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
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Repository files navigation
babel

The compiler for writing next generation JavaScript.

Travis StatusCircleCI StatusCoverage StatusSlack Statusnpm Downloads
Supporting Babel
Backers on Open CollectiveSponsors on Open CollectiveBusiness 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:
  • 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]
Silver
Bronze
Mike Sherov
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){returnn+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 visit 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.
License
MIT
About
🐠 Babel is a compiler for writing next generation JavaScript.
babeljs.io/
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Used by
Contributors
Languages