Directives transformer

UnoCSS transformer for @apply, @screen and theme() directives: @unocss/transformer-directives.

Installation

pnpm

pnpm add -D @unocss/transformer-directives

yarn

yarn add -D @unocss/transformer-directives

npm

npm install -D @unocss/transformer-directives

// uno.config.ts
import { defineConfig } from 'unocss'
import transformerDirectives from '@unocss/transformer-directives'

export default defineConfig({
  // ...
  transformers: [
    transformerDirectives(),
  ],
})

Usage

@apply

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

Will be transformed to:

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

--at-apply

To be compatible with vanilla CSS, you can use CSS custom properties to replace the @apply directive:

.custom-div {
  --at-apply: text-center my-0 font-medium;
}

This feature is enabled by default with a few aliases, that you can configure or disable via:

transformerDirectives({
  // the defaults
  applyVariable: ['--at-apply', '--uno-apply', '--uno'],
  // or disable with:
  // applyVariable: false
})

Adding quotes

To use rules with :, you will have to quote the whole value:

.custom-div {
  --at-apply: "hover:text-red hover:font-bold";
  /* or */
  @apply 'hover:text-red hover:font-bold';
}

Using quotes after @apply is optional, to meet the behavior of some formatters.

@screen

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

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

Will be transformed to:

.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));
  }
}
/* ... */

Breakpoint variant support

@screen also supports lt、at variants:

@screen lt-

.grid {
  --uno: grid grid-cols-2;
}
@screen lt-xs {
  .grid {
    --uno: grid-cols-1;
  }
}
@screen lt-sm {
  .grid {
    --uno: grid-cols-3;
  }
}
/* ... */

Will be transformed to:

.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-

.grid {
  --uno: grid grid-cols-2;
}
@screen at-xs {
  .grid {
    --uno: grid-cols-1;
  }
}
@screen at-xl {
  .grid {
    --uno: grid-cols-3;
  }
}
@screen at-xxl {
  .grid {
    --uno: grid-cols-4;
  }
}
/* ... */

Will be transformed to:

.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()

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

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

Will be compiled to:

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

License

• MIT License © 2022-PRESENT hannoeru