Merge pull request #86 from posthtml/milestone-1.4.2

Milestone 1.4.2

Author: Scrum

lib/index.js

@@ -192,10 +192,12 @@ function walk (opts, nodes) {
     // if not, we have an object, so we need to run the attributes and contents
     if (node.attrs) {
       for (const key in node.attrs) {
-        node.attrs[key] = placeholders(node.attrs[key], ctx, delimitersSettings)
-        node.attrs[key] = node.attrs[key]
-          .replace(unescapeDelimitersReplace, delimitersSettings[0].text[0])
-          .replace(delimitersReplace, delimitersSettings[1].text[0])
+        if (typeof node.attrs[key] === 'string') {
+          node.attrs[key] = placeholders(node.attrs[key], ctx, delimitersSettings)
+          node.attrs[key] = node.attrs[key]
+            .replace(unescapeDelimitersReplace, delimitersSettings[0].text[0])
+            .replace(delimitersReplace, delimitersSettings[1].text[0])
+        }
       }
     }