Check if a Rule has a selectors property before accessing it

Author: elchininet

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## [5.6.1] - 2025-04-07
+
+- Check that a rule has a `selectors` property before accessing it and in this way avoid an issue with Tailwind.
+
 ## [5.6.0] - 2024-12-13
 
 - Add new directives to freeze rules and declarations `/*rtl:freeze*/`, `/*rtl:begin:freeze*/` and `/*rtl:end:freeze*/`

src/utilities/selectors.ts

@@ -28,23 +28,26 @@ const addPrefix = (prefix: string, selector: string): string => {
 };
 
 export const addSelectorPrefixes = (rule: Rule, prefixes: strings): void => {
-    rule.selectors = isString(prefixes)
-        ? rule.selectors.map((selector: string): string => {
-            if (store.rulesPrefixRegExp.test(selector)) {
-                return selector;
-            }
-            return addPrefix(prefixes, selector);
-        })
-        : rule.selectors.reduce((selectors: string[], selector: string): string[] => {
-            if (store.rulesPrefixRegExp.test(selector)) {
-                selectors = [...selectors, selector];
-            } else {
-                selectors = selectors.concat(
-                    prefixes.map((prefix: string): string => addPrefix(prefix, selector))
-                );
-            }
-            return selectors;
-        }, []);
+    
+    if (rule.selectors) {
+        rule.selectors = isString(prefixes)
+            ? rule.selectors.map((selector: string): string => {
+                if (store.rulesPrefixRegExp.test(selector)) {
+                    return selector;
+                }
+                return addPrefix(prefixes, selector);
+            })
+            : rule.selectors.reduce((selectors: string[], selector: string): string[] => {
+                if (store.rulesPrefixRegExp.test(selector)) {
+                    selectors = [...selectors, selector];
+                } else {
+                    selectors = selectors.concat(
+                        prefixes.map((prefix: string): string => addPrefix(prefix, selector))
+                    );
+                }
+                return selectors;
+            }, []);
+    }
 };
 
 export const hasSelectorsPrefixed = (rule: Rule): boolean => {