feat(css/lint): useBaseline

.changeset/add-use-baseline-css-rule.md

@@ -0,0 +1,11 @@
+---
+"@biomejs/biome": patch
+---
+
+Added new nursery lint rule `useBaseline` for CSS. The rule reports when CSS properties, property values, at-rules, media conditions, functions, or pseudo-selectors are not part of the configured [Baseline](https://developer.mozilla.org/en-US/docs/Glossary/Baseline/Compatibility) tier.
+
+For example, *at the time of writing*, the rule will trigger for the use of `accent-color` because it has limited availability:
+
+```css
+a { accent-color: bar; }
+```

crates/biome_analyze/src/rule.rs

@@ -186,6 +186,8 @@ pub enum RuleSource<'a> {
     EslintMarkdown(&'a str),
     /// Rules from [Eslint Plugin Yml](https://ota-meshi.github.io/eslint-plugin-yml/)
     EslintYml(&'a str),
+    /// Rules from [Eslint CSS](https://github.com/eslint/css)
+    EslintCss(&'a str),
 }
 
 impl<'a> std::fmt::Display for RuleSource<'a> {
@@ -239,6 +241,7 @@ impl<'a> std::fmt::Display for RuleSource<'a> {
             Self::EslintJson(_) => write!(f, "@eslint/json"),
             Self::EslintMarkdown(_) => write!(f, "@eslint/markdown"),
             Self::EslintYml(_) => write!(f, "eslint-plugin-yml"),
+            Self::EslintCss(_) => write!(f, "@eslint/css"),
         }
     }
 }
@@ -303,6 +306,7 @@ impl<'a> RuleSource<'a> {
             Self::EslintJson(_) => 41,
             Self::EslintMarkdown(_) => 42,
             Self::EslintYml(_) => 43,
+            Self::EslintCss(_) => 44,
         }
     }
 
@@ -362,6 +366,7 @@ impl<'a> RuleSource<'a> {
             | Self::Stylelint(rule_name)
             | Self::EslintTurbo(rule_name)
             | Self::HtmlEslint(rule_name)
+            | Self::EslintCss(rule_name)
             | Self::EslintPlaywright(rule_name)
             | Self::EslintJson(rule_name)
             | Self::EslintMarkdown(rule_name)
@@ -415,6 +420,7 @@ impl<'a> RuleSource<'a> {
             Self::EslintJson(_) => "json",
             Self::EslintMarkdown(_) => "markdown",
             Self::EslintYml(_) => "yml",
+            Self::EslintCss(_) => "css",
         }
     }
 
@@ -472,6 +478,7 @@ impl<'a> RuleSource<'a> {
             Self::EslintJson(rule_name) => format!("https://github.com/eslint/json/blob/main/docs/rules/{rule_name}.md"),
             Self::EslintMarkdown(rule_name) => format!("https://github.com/eslint/markdown/blob/main/docs/rules/{rule_name}.md"),
             Self::EslintYml(rule_name) => format!("https://ota-meshi.github.io/eslint-plugin-yml/rules/{rule_name}.html"),
+            Self::EslintCss(rule_name) => format!("https://github.com/eslint/css/blob/main/docs/rules/{rule_name}.md"),
         }
     }
 

crates/biome_css_analyze/Cargo.toml

@@ -32,6 +32,7 @@ biome_rule_options       = { workspace = true }
 biome_string_case        = { workspace = true }
 biome_suppression        = { workspace = true }
 camino                   = { workspace = true }
+phf                      = { workspace = true }
 regex                    = { workspace = true }
 rustc-hash               = { workspace = true }
 schemars                 = { workspace = true, optional = true }