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unplugin-attributify-to-class

v0.2.5

Published

css attributify mode to class, support use in vite, rollup, webpack

Downloads

562

Readme

Version Downloads

将原子化css attributify mode 收集并添加到 class 中, 以支持在小程序中使用 attributify mode

为了贴合功能语义,unplugin-unocss-attributify-wechat 改名为 unplugin-attributify-to-class


为什么使用

使用 @unocss/preset-attributify

<button
  bg="blue-400">
  button
</button>

生成后的css

[bg~="blue-400"] {
  --un-bg-opacity: 1;
  background-color: rgba(96,165,250,var(--un-bg-opacity));
}

小程序不支持属性选择器 [bg~="blue-400"] ,微信文档


使用该插件

<button
  bg="blue-400">
  button
</button>

转换后

<button
  bg="blue-400"
  class="bg-blue-400">
  button
</button>

安装

npm i -D unplugin-attributify-to-class
import { defineConfig } from 'vite'
import { attributifyToClass, defaultAttributes, defaultIgnoreNonValuedAttributes } from 'unplugin-attributify-to-class/vite'

export default defineConfig({
  plugins: [
    // https://github.com/MellowCo/unplugin-attributify-to-class
    attributifyToClass(),
  ],
})

const { defaultAttributes, defaultIgnoreNonValuedAttributes, attributifyToClass } = require('unplugin-attributify-to-class/webpack')

module.exports = {
  configureWebpack: {
    plugins: [
      // https://github.com/MellowCo/unplugin-attributify-to-class
      attributifyToClass(),
    ],
  },
}

如何使用

options

export interface Options {

  /**
   * @default 'un-'
   */
  prefix?: string

  /**
   * 仅匹配前缀属性
   * @default false
   */
  prefixedOnly?: boolean

  /**
   * 需要转换的属性列表
   * @default ['bg', 'flex', 'grid', 'border', 'text', 'font', 'class', 'className', 'p', 'm', 'animate']
   */
  attributes?: string[]

  /**
   * 忽略的非值属性列表
   * @default ['class']
   */
  ignoreNonValuedAttributes?: string[]

  /**
   * 支持匹配非值属性
   *
   * For example
   * ```html
   * <div mt-2 />
   * ```
   *
   * @default true
   */
  nonValuedAttribute?: boolean

  /**
   * 转换转义字符 [ # $
   * @default true
   */
  transformEscape?: boolean

  /**
   * 自定义转义字符转换规则
   * @default https://github.com/MellowCo/unplugin-transform-class#options
   */
  transformRules?: Record<string, string>

  /**
   * 排除转换目标
   * @default [/[\\/]node_modules[\\/]/, /[\\/]\.git[\\/]/]
   */
  exclude?: FilterPattern

  /**
    * 需要转换的目标
    * @default [/\.vue$/,  /\.vue\?vue/]
    */
  include?: FilterPattern

  /**
    * 为生成的class选择器添加前缀
    * @default ''
    */
  classPrefix?: string
}

Attributify Mode

相关介绍见 attributify-mode

<button class="text-sm text-white font-mono font-light p-y-2 p-x-4">
  Button
</button>

默认转换的属性列表为 ['bg', 'flex', 'grid', 'border', 'text', 'font', 'class', 'className', 'p', 'm', 'animate']

<button 
  text="sm white"
  font="mono light"
  p="y-2 x-4"
  my-attr="y-1 x-2 sm"
>
  Button
</button>
<button 
  text="sm white"
  font="mono light"
  p="y-2 x-4"
  my-attr="y-1 x-2 sm"
  class="text-sm text-white font-mono font-light p-y-2 p-x-4" 
>
  Button
</button>

使用 attributes , 添加新的属性

import { attributifyToClass, defaultAttributes } from 'unplugin-attributify-to-class/vite'
// import { attributifyToClass, defaultAttributes } from 'unplugin-attributify-to-class/webpack'

attributifyToClass({
  attributes: [...defaultAttributes, 'my-attr']
})
<button 
  text="sm white"
  font="mono light"
  p="y-2 x-4"
  my-attr="y-1 x-2 sm"
  class="text-sm text-white font-mono font-light p-y-2 p-x-4 my-attr-y-1 my-attr-x-2 my-attr-sm ">
  Button
</button>

前缀自参照

对于 flexgridborder 等具有与前缀相同的实用程序,将提供一个特殊的 ~

<button class="border border-red">
  Button
</button>

可以写成

<button border="~ red">
  Button
</button>

Valueless Attributify

<button m-2 rounded text-teal-400 />

转换后

<button 
  m-2 rounded text-teal-400 
  class="m-2 rounded text-teal-400" 
/>

注意事项

  • Valueless Attributify 默认是 开启 的,设置 nonValuedAttributefalse 关闭
  • 默认提取所有 valueless 属性,可以设置 ignoreNonValuedAttributes,排除掉不需要的属性,避免生成多余的 class
  • ignoreNonValuedAttributes 默认值 ['class']
<button m-2 rounded text-teal-400 my-prop is-top/>

转换后,会将 my-prop is-top 提取到 class

<button 
  m-2 rounded text-teal-400 my-prop is-top
  class="m-2 rounded text-teal-400 my-prop is-top" 
/>

配置 ignoreNonValuedAttributes 忽略 my-prop is-top

import { attributifyToClass, defaultIgnoreNonValuedAttributes } from 'unplugin-attributify-to-class/vite'
// import { attributifyToClass, defaultIgnoreNonValuedAttributes } from 'unplugin-attributify-to-class/webpack'

attributifyToClass({
  // 开启 valueless attributify
  nonValuedAttribute: true,
  // 忽略的非值属性列表
  ignoreNonValuedAttributes: [...defaultIgnoreNonValuedAttributes, 'my-prop', 'is-top']
})
<button 
  m-2 rounded text-teal-400 my-prop is-top
  class="m-2 rounded text-teal-400" 
/>

Properties Conflicts

如果属性模式的名称与元素或组件的属性冲突,可以针对属性模式添加 prefix

<a 
  text="red" 
  bg-red
  un-text="blue"
  un-bg-blue
>
  This conflicts with links' `text` prop
</a>

设置 前缀匹配

attributifyToClass({
  // 前缀属性默认值`un-`
  prefix: 'un-',
  // 仅匹配前缀属性
  prefixedOnly: true,
})

转换后

<a 
  text="red" 
  bg-red
  un-text="blue"
  un-bg-blue
  class="text-blue bg-blue"
>
  This conflicts with links' text prop
</a>

transformEscape

针对 uniappp vue2 taro webpack插件bg="[#333]" 编译后变成 bg- 333,导致样式无法正常显示 将 bg="[#333]" 提前转义 bg="[#333]" => bg--fl--w-333-fr

  • 默认开启,设置 transformEscape
  • 通过 transformRules 设置自定义转换规则,默认转换规则

自定义转换规则

const myRules = {
  '.': '-d-',
  '/': '-s-',
  ':': '-c-',
  '%': '-p-',
  '!': '-e-',
  '#': '-w-',
  '(': '-bl-',
  ')': '-br-',
  '[': '-fl-',
  ']': '-fr-',
  '$': '-r-',
}

attributifyToClass({
  transformEscape: true,
  transformRules: myRules
})

include exclude

自定义转换的目标

attributifyToClass({
  exclude: [/[\\/]node_modules[\\/]/, /[\\/]\.git[\\/]/, /[\\/]my-folder[\\/]/],
  include: [/\.vue$/, /\.vue\?vue/]
})

classPrefix

为生成的class选择器添加前缀

<button bg-green bg-red text="center left"></button>

<button 
  bg-green bg-red 
  text="center left" 
  class="bg-green bg-red text-center text-left"
></button>
  • 设置 classPrefix,生成的class选择器会加上前缀
const classPrefixExtract = extractorAttributify({
  nonValuedAttribute: true,
  classPrefix: 'li-',
})

转换后,会在生成的 class 中,添加前缀,bg-green => class="li-bg-green"

<button 
  bg-green bg-red 
  text="center left" 
  class="li-bg-green li-bg-red li-text-center li-text-left"
></button>

utils 导出

import { extractorAttributify } from 'unplugin-attributify-to-class/utils'
const options = {
  // ...
}

const extractor = extractorAttributify(options)

const code = 'xxxxx'
const newCode = extractor(code)

相关链接