Fix: Fixed Mapper crashing in scenario where attribute element boun…

…d with marker is broken.
ckeditor · Aug 13, 2019 · 4eb6210 · 4eb6210
1 parent 509c254
commit 4eb6210
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/src/conversion/mapper.js b/src/conversion/mapper.js
@@ -222,10 +222,12 @@ export default class Mapper {
 
 		const names = this._elementToMarkerNames.get( element );
 
-		names.delete( name );
+		if ( names ) {
+			names.delete( name );
 
-		if ( names.size == 0 ) {
-			this._elementToMarkerNames.delete( element );
+			if ( names.size == 0 ) {
+				this._elementToMarkerNames.delete( element );
+			}
 		}
 	}