Override safari compat data from caniuse for ::marker pseudo element

Fixes #508

scripts/build-prefixes.js

@@ -204,18 +204,34 @@ let cssFeatureMappings = {
   'calc': 'CalcFunction'
 };
 
+let cssFeatureOverrides = {
+  // Safari supports the ::marker pseudo element, but only supports styling some properties.
+  // However this does not break using the selector itself, so ignore for our purposes.
+  // https://bugs.webkit.org/show_bug.cgi?id=204163
+  // https://github.com/parcel-bundler/lightningcss/issues/508
+  'css-marker-pseudo': {
+    safari: {
+      'y #1': 'y'
+    }
+  }
+};
+
 let compat = new Map();
 for (let feature of cssFeatures) {
   let data = unpack(features[feature]);
+  let overrides = cssFeatureOverrides[feature];
   let browserMap = {};
   for (let name in data.stats) {
     if (BROWSER_MAPPING[name] === null) {
       continue;
     }
 
     name = BROWSER_MAPPING[name] || name;
+    let browserOverrides = overrides?.[name];
     for (let version in data.stats[name]) {
-      if (data.stats[name][version] === 'y') {
+      let value = data.stats[name][version];
+      value = browserOverrides?.[value] || value;
+      if (value === 'y') {
         let v = parseVersion(version);
         if (v == null) {
           console.log('BAD VERSION', feature, name, version);

src/compat.rs

@@ -941,6 +941,11 @@ impl Feature {
             return false;
           }
         }
+        if let Some(version) = browsers.safari {
+          if version < 721152 {
+            return false;
+          }
+        }
         if let Some(version) = browsers.opera {
           if version < 4718592 {
             return false;
@@ -961,7 +966,7 @@ impl Feature {
             return false;
           }
         }
-        if browsers.ie.is_some() || browsers.safari.is_some() {
+        if browsers.ie.is_some() {
           return false;
         }
       }