Avoid failure if existing target has no background color

2022-01-07 14:58:46 -07:00
parent e0aa161302
commit a963ab7d1d
3 changed files with 46 additions and 4 deletions
@@ -114,10 +114,11 @@ class CanvasLayerRenderer extends LayerRenderer {
      target.style.opacity === '' &&
      opacity === 1 &&
      (!opt_backgroundColor ||
-        equals(
-          asArray(target.style.backgroundColor),
-          asArray(opt_backgroundColor)
-        ))
+        (target.style.backgroundColor &&
+          equals(
+            asArray(target.style.backgroundColor),
+            asArray(opt_backgroundColor)
+          )))
    ) {
      const canvas = target.firstElementChild;
      if (canvas instanceof HTMLCanvasElement) {