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https://github.com/LeetCode-OpenSource/emotion-ts-plugin

TypeScript Emotion Plugin . https://emotion.sh/
https://github.com/LeetCode-OpenSource/emotion-ts-plugin

emotion typescript

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TypeScript Emotion Plugin . https://emotion.sh/

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README

        

# Emotion TypeScript Plugin

[![CircleCI](https://circleci.com/gh/LeetCode-OpenSource/emotion-ts-plugin.svg?style=svg)](https://circleci.com/gh/LeetCode-OpenSource/emotion-ts-plugin)
[![codecov](https://codecov.io/gh/LeetCode-OpenSource/emotion-ts-plugin/branch/master/graph/badge.svg)](https://codecov.io/gh/LeetCode-OpenSource/emotion-ts-plugin)
[![Downloads](https://img.shields.io/npm/dm/emotion-ts-plugin.svg?sanitize=true)](https://npmcharts.com/compare/emotion-ts-plugin?minimal=true)

## Features



Feature/Syntax
Native
Babel Plugin
TypeScript Plugin
Notes




css``






css(...)



Generally used for object styles.


styled('div')`` syntax



Both string and object styles work without this plugin.


styled.div`` syntax



Supporting the shortcut syntax without the Babel plugin requires a large list of valid elements to be included in the bundle.


components as selectors



Allows an emotion component to be used as a CSS selector.


Minification


⛔️
Any leading/trailing space between properties in your css and styled blocks is removed. This can reduce the size of your final bundle.


Dead Code Elimination



Uglifyjs will use the injected /*#__PURE__*/ flag comments to mark your css and styled blocks as candidates for dead code elimination.


Source Maps



When enabled, navigate directly to the style declaration in your javascript file.


Contextual Class Names



Generated class names include the name of the variable or component they were defined in.

## Usage

```ts
const { join } = require('path')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')

const { createEmotionPlugin } = require('emotion-ts-plugin')

module.exports = {
entry: './tests/fixtures/simple.tsx',

output: {
filename: '[name].[hash].js',
path: join(process.cwd(), 'dist'),
},

resolve: {
extensions: ['.tsx', '.ts', '.js', '.jsx'],
},

mode: 'development',

devtool: 'cheap-module-source-map',

module: {
rules: [
{
test: /\.(j|t)sx?$/,
loader: 'ts-loader',
options: {
transpileOnly: true,
getCustomTransformers: () => ({
before: [
createEmotionPlugin({
// <------------------- here
sourcemap: true,
autoLabel: true,
labelFormat: '[local]',
// if the jsxFactory is set, should we auto insert the import statement
autoInject: true,
// set for react@17 new jsx runtime
// only effect if `autoInject` is true
// set it in createEmotionPlugin options rather than in `tsconfig.json` will generate more optimized codes:
// import { jsx } from 'react/jsx-runtime' for files not using emotion
// import { jsx } from '@emotion/react/jsx-runtime' for files using emotion
jsxImportSource: '@emotion/react',
}),
],
}),
compilerOptions: {
// set jsx pragma to jsx or alias which is from the @emotion/react package to enable css property in jsx component
jsxFactory: 'jsx',
},
},
exclude: /node_modules/,
},
{
test: /\.css$/,
use: [MiniCssExtractPlugin.loader, 'css-loader?minimize'],
},
],
},

plugins: [
new HtmlWebpackPlugin({
template: join(process.cwd(), 'tests', 'fixtures', 'index.html'),
}),
],
}
```

for customized exported(re-exported) styled

```ts
interface CustomModule {
// module name used in import statement
moduleName: string
// `true` if you may import libs from 'my-emotion/subpath'
includesSubPath?: boolean
// all available names exported from custom module
exportedNames: string[]
// we may do some additional work on styled function, so if styled is reexport, you should specify it here
styledName?: string
// has default export
hasDefaultExport?: boolean
}

createEmotionPlugin({
...otherConfig,
customModules: [
{
moduleName: 'my-emotion',
includesSubPath: true,
exportedNames: ['myStyled', 'myCss']
styledName: 'myStyled',
}
]
})
```