Ensure viewerConfig exists in OpenSeadragonViewer condition

Fixes #4079
ProjectMirador · Jan 16, 2025 · 660081e · 660081e
1 parent 37ae1e3
commit 660081e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/components/OpenSeadragonViewer.js b/src/components/OpenSeadragonViewer.js
@@ -104,7 +104,7 @@ export class OpenSeadragonViewer extends Component {
       }
     } else if (!isEqual(canvasWorld.layers, prevProps.canvasWorld.layers)) {
       this.refreshTileProperties();
-    } else if (viewerConfig !== prevProps.viewerConfig) {
+    } else if (viewerConfig && viewerConfig !== prevProps.viewerConfig) {
       const { viewport } = viewer;
 
       if (viewerConfig.x !== viewport.centerSpringX.target.value