fix(noUnknownMediaFeatureName): fix typo in prefers-reduced-transparency (#8444)

tt-a1i · web-flow · commit 8caa7a075479 · 2025-12-14T09:59:27.000-05:00
diff --git a/.changeset/fix-prefers-reduced-transparency-typo.md b/.changeset/fix-prefers-reduced-transparency-typo.md
@@ -0,0 +1,5 @@
+---
+"@biomejs/biome": patch
+---
+
+Fix [`noUnknownMediaFeatureName`](https://biomejs.dev/linter/rules/no-unknown-media-feature-name/) false positive for `prefers-reduced-transparency` media feature. The feature name was misspelled as `prefers-reduded-transparency` in the keywords list.
diff --git a/crates/biome_css_analyze/src/keywords.rs b/crates/biome_css_analyze/src/keywords.rs
@@ -5150,7 +5150,7 @@ pub const MEDIA_FEATURE_NAMES: [&str; 60] = [
     "prefers-contrast",
     "prefers-reduced-data",
     "prefers-reduced-motion",
-    "prefers-reduded-transparency",
+    "prefers-reduced-transparency",
     "resolution",
     "scan",
     "screen-spanning",
diff --git a/crates/biome_css_analyze/tests/specs/correctness/noUnknownMediaFeatureName/valid.css b/crates/biome_css_analyze/tests/specs/correctness/noUnknownMediaFeatureName/valid.css
@@ -19,3 +19,6 @@
 
 @media (400px <= width <= 700px) {
 }
+
+@media (prefers-reduced-transparency: reduce) {
+}
diff --git a/crates/biome_css_analyze/tests/specs/correctness/noUnknownMediaFeatureName/valid.css.snap b/crates/biome_css_analyze/tests/specs/correctness/noUnknownMediaFeatureName/valid.css.snap
@@ -26,4 +26,7 @@ expression: valid.css
 @media (400px <= width <= 700px) {
 }
 
+@media (prefers-reduced-transparency: reduce) {
+}
+
 ```

-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +---
 +"@biomejs/biome": patch
 +---
++
 +Fix [`noUnknownMediaFeatureName`](https://biomejs.dev/linter/rules/no-unknown-media-feature-name/) false positive for `prefers-reduced-transparency` media feature. The feature name was misspelled as `prefers-reduded-transparency` in the keywords list.
Original file line number	Diff line number	Diff line change
`@@ -19,3 +19,6 @@`
`19`	`19`
`20`	`20`	`@media (400px <= width <= 700px) {`
`21`	`21`	`}`
	`22`	`+`
	`23`	`+@media (prefers-reduced-transparency: reduce) {`
	`24`	`+}`
Original file line number	Diff line number	Diff line change
`@@ -26,4 +26,7 @@ expression: valid.css`
`26`	`26`	`@media (400px <= width <= 700px) {`
`27`	`27`	`}`
`28`	`28`
	`29`	`+@media (prefers-reduced-transparency: reduce) {`
	`30`	`+}`
	`31`	`+`
`29`	`32`	```