Add isColorIdentifier() function

Author: asamuzaK

lib/parsers.js

@@ -2,7 +2,7 @@
 
 const {
   resolve: resolveColor,
-  utils: { cssCalc, resolveGradient, splitValue }
+  utils: { cssCalc, isColor, resolveGradient, splitValue }
 } = require("@asamuzakjp/css-color");
 const { next: syntaxes } = require("@csstools/css-syntax-patches-for-csstree");
 const csstree = require("css-tree");
@@ -119,6 +119,17 @@ function isGlobalKeyword(val) {
   return GLOBAL_KEYS.has(asciiLowercase(val));
 }
 
+/**
+ * Checks if the value is a color identifier.
+ *
+ * @param {string} val - The value to check.
+ * @returns {boolean} True if the value is a color identifier, false otherwise.
+ */
+function isColorIdentifier(val) {
+  const value = asciiLowercase(val);
+  return SYS_COLORS.has(value) || isColor(value);
+}
+
 /**
  * Checks if the value starts with or contains a CSS var() function.
  *
@@ -826,6 +837,7 @@ module.exports = {
   AST_TYPES,
   hasCalcFunc,
   hasVarFunc,
+  isColorIdentifier,
   isGlobalKeyword,
   isValidPropertyValue,
   parseCSS,

lib/utils/propertyDescriptors.js

@@ -1,8 +1,5 @@
 "use strict";
 
-const {
-  utils: { isColor }
-} = require("@asamuzakjp/css-color");
 const parsers = require("../parsers");
 
 // Constants
@@ -88,7 +85,7 @@ function createGenericPropertyDescriptor(property, { caseSensitive, dimensionTyp
                 break;
               }
               case AST_TYPES.IDENTIFIER: {
-                if ((colorType || paintType) && isColor(value)) {
+                if ((colorType || paintType) && parsers.isColorIdentifier(value)) {
                   this._setProperty(property, parsers.serializeColor(parsedValue), priority);
                 } else {
                   this._setProperty(property, name, priority);