From e7a2f5d6d4eaca6adc3b217e444f4ee97027d93d Mon Sep 17 00:00:00 2001
From: Tony Li <tonyli8101@gmail.com>
Date: Fri, 31 Dec 2021 04:42:56 -0500
Subject: [PATCH] added NaN check on pinch event (#476)

---
 packages/tldraw/src/state/tools/BaseTool.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/tldraw/src/state/tools/BaseTool.ts b/packages/tldraw/src/state/tools/BaseTool.ts
index 824153b7f..c3b0ed43e 100644
--- a/packages/tldraw/src/state/tools/BaseTool.ts
+++ b/packages/tldraw/src/state/tools/BaseTool.ts
@@ -77,6 +77,7 @@ export abstract class BaseTool<T extends string = any> extends TDEventHandler {
 
   onPinch: TLPinchEventHandler = (info, e) => {
     if (this.status !== 'pinching') return
+    if (isNaN(info.delta[0]) || isNaN(info.delta[1])) return
     this.app.pinchZoom(info.point, info.delta, info.delta[2])
     this.onPointerMove?.(info, e as unknown as React.PointerEvent)
   }