Fix typeError exception in time-graph-viewport-layer.ts

Fixes #214 Signed-off-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
eclipse-cdt-cloud · Nov 11, 2022 · dbc96fd · dbc96fd
1 parent 16e8148
commit dbc96fd
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/timeline-chart/src/layer/time-graph-viewport-layer.ts b/timeline-chart/src/layer/time-graph-viewport-layer.ts
@@ -34,6 +34,9 @@ export abstract class TimeGraphViewportLayer extends TimeGraphLayer {
     }
 
     protected shiftStage = () => {
+        if (this.layer.position === undefined || this.layer.position === null) {
+            return;
+        }
         this.layer.position.x = this.stateController.positionOffset.x;
     }