Fix attr lowercasing

In some case, attrValue isn't a string.
posthtml · Sep 19, 2021 · 2dbf413 · 2dbf413
1 parent 5603e01
commit 2dbf413
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/modules/normalizeAttributeValues.es6 b/lib/modules/normalizeAttributeValues.es6
@@ -50,7 +50,7 @@ export default function normalizeAttributeValues(tree) {
                     || caseInsensitiveAttributes[attrNameLower].includes(node.tag)
                 )
             ) {
-                node.attrs[attrName] = attrValue.toLowerCase();
+                node.attrs[attrName] = attrValue.toLowerCase ? attrValue.toLowerCase() : attrValue;
             }
         });