$ npm install @emotion/babel-preset-css-prop
A babel preset to automatically enable emotion's css prop
yarn add @emotion/babel-preset-css-prop
.babelrc
{
"presets": ["@emotion/babel-preset-css-prop"]
}
@emotion/babel-preset-css-prop
includes the emotion plugin. The babel-plugin-emotion
entry should be be removed from your config and any options moved to the preset. If you use @babel/preset-react
or @babel/preset-typescript
ensure that @emotion/babel-preset-css-prop
is inserted after them in your babel config.
{
+ "presets": [
+ [
+ "@emotion/babel-preset-css-prop",
+ {
+ "autoLabel": true,
+ "labelFormat": "[local]"
+ }
+ ]
+ ],
- "plugins": [
- [
- "emotion",
- {
- "autoLabel": true,
- "labelFormat": "[local]"
- }
- ]
- ]
}
See the options documentation for more information.
babel --presets @emotion/babel-preset-css-prop script.js
require('@babel/core').transform(code, {
presets: ['@emotion/babel-preset-css-prop']
})
This preset enables the css
prop for an entire project via a single entry to the babel configuration. After adding the preset, compiled jsx code will use emotion's jsx
function instead of React.createElement
.
Input | Output | |
---|---|---|
Before | <img src="avatar.png" /> |
React.createElement('img', { src: 'avatar.png' }) |
After | <img src="avatar.png" /> |
jsx('img', { src: 'avatar.png' }) |
import { jsx } from '@emotion/core'
is automatically added to the top of files where required.
In
const Link = props => (
<a
css={{
color: 'hotpink',
'&:hover': {
color: 'darkorchid'
}
}}
{...props}
/>
)
Out
import { jsx as ___EmotionJSX } from '@emotion/core'
function _extends() {
/* babel Object.assign polyfill */
}
var _ref =
process.env.NODE_ENV === 'production'
? {
name: '1fpk7dx-Link',
styles: 'color:hotpink;&:hover{color:darkorchid;}label:Link;'
}
: {
name: '1fpk7dx-Link',
styles: 'color:hotpink;&:hover{color:darkorchid;}label:Link;',
map:
'/*# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbImF1dG9tYXRpYy1pbXBvcnQuanMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6IkFBRUkiLCJmaWxlIjoiYXV0b21hdGljLWltcG9ydC5qcyIsInNvdXJjZXNDb250ZW50IjpbImNvbnN0IExpbmsgPSBwcm9wcyA9PiAoXG4gIDxhXG4gICAgY3NzPXt7XG4gICAgICBjb2xvcjogJ2hvdHBpbmsnLFxuICAgICAgJyY6aG92ZXInOiB7XG4gICAgICAgIGNvbG9yOiAnZGFya29yY2hpZCdcbiAgICAgIH1cbiAgICB9fVxuICAgIHsuLi5wcm9wc31cbiAgLz5cbilcbiJdfQ== */'
}
const Link = props =>
___EmotionJSX(
'a',
_extends(
{
css: _ref
},
props
)
)
In addition to the custom pragma, this example includes babel-plugin-emotion
transforms that are enabled by default.
Options for both babel-plugin-emotion
and @babel/plugin-transform-react-jsx
are supported and will be forwarded to their respective plugin.
Refer to the plugin's documentation for full option documentation.
{
"presets": [
"@emotion/babel-preset-css-prop",
{
"autoLabel": true,
"labelFormat": "[local]",
"useBuiltIns": false,
"throwIfNamespace": true
}
]
}
Options set to default values for demonstration purposes.
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