@ant-design/cssinjs

Component level cssinjs solution used in ant.design. It's a subset of Emotion with design token logic wrapper. Please feel free to use emotion directly if you want to find a web cssinjs solution. cssinjs related dep packages:

stylis
@emotion/hash
@emotion/unitless

Live Demo

https://ant-design.github.io/cssinjs/

Install

npm install @ant-design/cssinjs

yarn add @ant-design/cssinjs

pnpm add @ant-design/cssinjs

Development

npm install
npm start

License

@ant-design/cssinjs is released under the MIT license.

API

StyleProvider

Prop	Desc	Type	Default
autoClear	Clear inject style element when component remove.	boolean	false
cache	Config cssinjs cache entity. Only set when you need ssr to extract style on you own.	CacheEntity	-
hashPriority	Use `:where` selector to reduce hashId css selector priority	`'low' \\| 'high'`	`'low'`
container	Tell cssinjs where to inject style in.	Element \| ShadowRoot	`document.head`
ssrInline	Component wil render inline `<style />` for fallback in SSR. Not recommend.	boolean	false
transformers	Transform css before inject in document. Please note that `transformers` do not support dynamic update	Transformer[]	-

createCache

return CacheEntity for StyleProvider.

createTheme

Create theme object. When same algorithm provided, it will return same object.

Design Token related API

Since @ant-design/cssinjs use strong constraints for cache hit performance, we recommend to view demo basic.tsx for usage and animation.tsx for animation usage.

extractStyle

Extracts the styles from the cache and returns them as a string.

Parameters

cache (Cache): The cache instance containing the styles.
options (object | boolean, optional): Options for extracting the styles.
- plain (boolean, optional): If true, the styles will be returned in plain format. Default is false.
- types (string | string[], optional): The types of styles to extract. Default is ['style', 'token', 'cssVar'].

Returns

(string): The extracted styles as a string.

Example

import { extractStyle, createCache } from '@ant-design/cssinjs';

// 创建并填充缓存
const cache = createCache();
// 注意：在实际使用中，缓存通常会在渲染组件时自动填充

// 提取样式
const styles = extractStyle(cache, { plain: true, types: ['style', 'token'] });

// 使用提取的样式
const styleElement = document.createElement('style');
styleElement.innerHTML = styles;
document.head.appendChild(styleElement);

Transform

When you need transform CSSObject before inject style. You can use transformers to handle this:

import {
  legacyLogicalPropertiesTransformer,
  StyleProvider,
} from '@ant-design/cssinjs';

export default () => (
  <StyleProvider transformers={[legacyLogicalPropertiesTransformer]}>
    <MyApp />
  </StyleProvider>
);

Follow are the transform we provide:

legacyLogicalPropertiesTransformer

Convert logical properties to legacy properties. e.g. marginBlockStart to marginTop:

inset
margin
padding
border

px2remTransformer

Convert pixel units to rem units. px2remTransformer.options