modernize Babel config #1721
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modernize Babel config #1721
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lerna failed on canary release. Releasing so many packages is bit flaky, but this PR is a nice change to bundle size regardless. https://github.com/system-ui/theme-ui/pull/1721/checks?check_run_id=2617831975 |
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[breaking] Internet Explorer 11 is no longer supported.
Babel Preset Env configuration was changed to:
```
{
bugfixes: true,
loose: true,
modules: false,
targets: '> 0.25%, not dead, not ie 11',
}
```
If you're targetting old browsers, you can transpile your node_modules
to ensure full control and compatibility.
See Babel Preset Env docs: https://babeljs.io/docs/en/babel-preset-env
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We're dropping almost 10 KB! @lachlanjc I'm almost ready to merge when you give it another look.
To-Do for this PR:
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First commit of this PR hase the same configuration for
@babel/preset-envEmotion uses (if I'm not wrong — emotion/babel-preset-emotion-dev/src/index.js).Enabling
looseresulted with 20% reduction in build size compared to currentdevelop.Release notes
All Theme UI package became on average 34% lighter! 🪶 It's 9.5kB if you sum all of them!
The trade-off is, Babel config has changed and it no longer supports Internet Explorer 11.
If you need to support legacy browsers, you can transpile node_modules (e.g. with next-transpile-modules).
Published prerelease version:
v0.9.0-develop.1Changelog
Release Notes
modernize Babel config (#1721)
All Theme UI package became on average 34% lighter! 🪶 It's 9.5kB if you sum all of them!
The trade-off is, Babel config has changed and it no longer supports Internet Explorer 11.
If you need to support legacy browsers, you can transpile node_modules (e.g. with next-transpile-modules).
🚀 Enhancement
@theme-ui/preset-base,@theme-ui/preset-bootstrap,@theme-ui/sidenav,@theme-ui/typography🐛 Bug Fix
@theme-ui/componentsdevelop@theme-ui/components📝 Documentation
Authors: 2