From 5efa908c35224b38b19aa296b529d31354f92028 Mon Sep 17 00:00:00 2001
From: Andy Hardin <ahardin@remarquesystems.com>
Date: Wed, 17 Jul 2019 13:19:02 -0400
Subject: [PATCH] Added check to use baseVal for svg elements

---
 src/dom/document-cloner.ts | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/dom/document-cloner.ts b/src/dom/document-cloner.ts
index 360084aee..6cd060c32 100644
--- a/src/dom/document-cloner.ts
+++ b/src/dom/document-cloner.ts
@@ -404,10 +404,15 @@ export class DocumentCloner {
         });
 
         anonymousReplacedElement.className = `${PSEUDO_HIDE_ELEMENT_CLASS_BEFORE} ${PSEUDO_HIDE_ELEMENT_CLASS_AFTER}`;
-        clone.className +=
-            pseudoElt === PseudoElementType.BEFORE
-                ? ` ${PSEUDO_HIDE_ELEMENT_CLASS_BEFORE}`
-                : ` ${PSEUDO_HIDE_ELEMENT_CLASS_AFTER}`;
+        const addClass = pseudoElt === PseudoElementType.BEFORE
+            ? ` ${PSEUDO_HIDE_ELEMENT_CLASS_BEFORE}`
+            : ` ${PSEUDO_HIDE_ELEMENT_CLASS_AFTER}`;
+        if ((<any>(clone.className)).baseVal) {
+            // Use baseVal for svg elements
+            (<any>(clone.className)).baseVal += addClass;
+        } else {
+            clone.className += addClass;
+        }
         return anonymousReplacedElement;
     }
 }