From b843117fc4a302bf3f0a23fb98e7bda0dc63dac9 Mon Sep 17 00:00:00 2001
From: kangwei <bingbing.yb@alibaba-inc.com>
Date: Thu, 18 Jun 2020 10:48:20 +0800
Subject: [PATCH] add comments

---
 packages/designer/src/designer/dragon.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/designer/src/designer/dragon.ts b/packages/designer/src/designer/dragon.ts
index 13ecf4d16..60ecef509 100644
--- a/packages/designer/src/designer/dragon.ts
+++ b/packages/designer/src/designer/dragon.ts
@@ -152,6 +152,9 @@ function getSourceSensor(dragObject: DragObject): ISimulatorHost | null {
   return dragObject.nodes[0]?.document.simulator || null;
 }
 
+/**
+ * make a handler that listen all sensors:document, avoid frame lost
+ */
 function makeEventsHandler(
   boostEvent: MouseEvent | DragEvent,
   sensors: ISimulatorHost[],