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PostCSS 插件 ​

🌐 PostCSS Plugin

UnoCSS 的 PostCSS 插件。支持 @apply、@screen 和 theme() 指令。

🌐 PostCSS plugin for UnoCSS. Supports @apply, @screen and theme() directives.

源代码

WARNING

这个包目前处于实验状态。它不遵循语义化版本控制，并且可能在补丁版本中引入破坏性更改。

安装 ​

🌐 Install

bash
pnpm add -D unocss @unocss/postcss
bash
yarn add -D unocss @unocss/postcss
bash
npm install -D unocss @unocss/postcss
bash
bun add -D unocss @unocss/postcss
postcss.config.mjs
ts
import UnoCSS from '@unocss/postcss'

export default {
  plugins: [
    UnoCSS(),
  ],
}
uno.config.ts
ts
import { defineConfig, presetWind3 } from 'unocss'

export default defineConfig({
  content: {
    filesystem: [
      '**/*.{html,js,ts,jsx,tsx,vue,svelte,astro,marko}',
    ],
  },
  presets: [
    presetWind3(),
  ],
})
style.css
css
@unocss;

用法 ​

🌐 Usage

@unocss ​

@unocss 规则是一个占位符。它将被生成的 CSS 替换。

你还可以单独注入每一层：

🌐 You can also inject each layer individually:

style.css
css
@unocss preflights;
@unocss default;

/*
  Fallback layer. It's always recommended to include.
  Only unused layers will be injected here.
*/
@unocss;

如果你想包含所有层，无论它们之前是否已被包含，你都可以使用 @unocss all。如果你想在多个文件中包含生成的 CSS，这很有用。

🌐 If you want to include all layers no matter whether they are previously included or not, you can use @unocss all. This is useful if you want to include generated CSS in multiple files.

css
@unocss all;

或者如果你想排除特定的层，可以使用 @unocss !<layer> 指令：

🌐 Or if you want to exclude a specific layer, you can use the @unocss !<layer> directive:

css
@unocss !preflights, !<other-layer>;

@apply ​

css
.custom-div {
  @apply text-center my-0 font-medium;
}

将转变为：

🌐 Will be transformed to:

css
.custom-div {
  margin-top: 0rem;
  margin-bottom: 0rem;
  text-align: center;
  font-weight: 500;
}

@screen ​

@screen 指令允许你创建通过名称引用断点的媒体查询，该功能来自 theme.breakpoints。

🌐 The @screen directive allows you to create media queries that reference your breakpoints by name comes from theme.breakpoints.

css
.grid {
  @apply grid grid-cols-2;
}
@screen xs {
  .grid {
    @apply grid-cols-1;
  }
}
@screen sm {
  .grid {
    @apply grid-cols-3;
  }
}
/* ... */

将转变为：

🌐 Will be transformed to:

css
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (min-width: 320px) {
  .grid {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }
}
@media (min-width: 640px) {
  .grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
/* ... */

断点变体支持 ​

🌐 Breakpoint Variant Support

@screen 也支持 lt、at 变体

@screen lt ​
css
.grid {
  @apply grid grid-cols-2;
}
@screen lt-xs {
  .grid {
    @apply grid-cols-1;
  }
}
@screen lt-sm {
  .grid {
    @apply grid-cols-3;
  }
}
/* ... */

将转变为：

🌐 Will be transformed to:

css
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (max-width: 319.9px) {
  .grid {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }
}
@media (max-width: 639.9px) {
  .grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
/* ... */
@screen at ​
css
.grid {
  @apply grid grid-cols-2;
}
@screen at-xs {
  .grid {
    @apply grid-cols-1;
  }
}
@screen at-xl {
  .grid {
    @apply grid-cols-3;
  }
}
@screen at-xxl {
  .grid {
    @apply grid-cols-4;
  }
}
/* ... */

将转变为：

🌐 Will be transformed to:

css
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (min-width: 320px) and (max-width: 639.9px) {
  .grid {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }
}
@media (min-width: 1280px) and (max-width: 1535.9px) {
  .grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (min-width: 1536px) {
  .grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
/* ... */

theme() ​

使用 theme() 函数通过点符号访问你的主题配置值。

🌐 Use the theme() function to access your theme config values using dot notation.

css
.btn-blue {
  background-color: theme('colors.blue.500');
}

将被编译为：

🌐 Will be compiled to:

css
.btn-blue {
  background-color: #3b82f6;
}