From 26c6538531d7a0958457320ba00e0c0e1f7cd600 Mon Sep 17 00:00:00 2001
From: giserpan <pan.xiaoming@datasw.com>
Date: Fri, 29 Oct 2021 16:17:08 +0800
Subject: [PATCH] fix bug when select interaction crashes with empty vector
 layer when declutter: true

---
 src/ol/renderer/canvas/VectorLayer.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ol/renderer/canvas/VectorLayer.js b/src/ol/renderer/canvas/VectorLayer.js
index ecfcc8c695..aae89b642f 100644
--- a/src/ol/renderer/canvas/VectorLayer.js
+++ b/src/ol/renderer/canvas/VectorLayer.js
@@ -485,7 +485,7 @@ class CanvasVectorLayerRenderer extends CanvasLayerRenderer {
         hitTolerance,
         featureCallback,
         executorGroup === this.declutterExecutorGroup
-          ? frameState.declutterTree.all().map((item) => item.value)
+          ? frameState.declutterTree&&frameState.declutterTree.all().map((item) => item.value)
           : null
       ));
     });