Add prefers-reduced-transparency variants

Author: lukewarlow

src/corePlugins.js

@@ -460,6 +460,11 @@ export let variantPlugins = {
     addVariant('contrast-more', '@media (prefers-contrast: more)')
     addVariant('contrast-less', '@media (prefers-contrast: less)')
   },
+
+  reducedTransparencyVariants: ({ addVariant }) => {
+    addVariant('transparency-safe', '@media (prefers-reduced-transparency: no-preference)')
+    addVariant('transparency-reduce', '@media (prefers-reduced-transparency: reduce)')
+  },
 }
 
 let cssTransformValue = [

src/lib/setupContextUtils.js

@@ -759,6 +759,7 @@ function resolvePlugins(context, root) {
     variantPlugins['printVariant'],
     variantPlugins['screenVariants'],
     variantPlugins['orientationVariants'],
+    variantPlugins['reducedTransparencyVariants'],
   ]
 
   return [...corePluginList, ...beforeVariants, ...userPlugins, ...afterVariants, ...layerPlugins]

tests/plugins/variants/reducedTransparencyVariants.test.js

@@ -0,0 +1,14 @@
+import { css, quickVariantPluginTest } from '../../util/run'
+
+quickVariantPluginTest('reducedTransparencyVariants').toMatchFormattedCss(css`
+  @media (prefers-reduced-transparency: no-preference) {
+    .transparency-safe\:flex {
+      display: flex;
+    }
+  }
+  @media (prefers-reduced-transparency: reduce) {
+    .transparency-reduce\:flex {
+      display: flex;
+    }
+  }
+`)