From 32b6d0f2dc8fcd71e6b2518b9bbe0c41c64a80b3 Mon Sep 17 00:00:00 2001
From: "baohua.kang" <baohua.kang@gientech.com>
Date: Wed, 29 Nov 2023 09:46:11 +0800
Subject: [PATCH] fix: fix sandbox/with/document.ts, MicroDocument.hasInstance
 throw error when target is null

---
 src/sandbox/with/document.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/sandbox/with/document.ts b/src/sandbox/with/document.ts
index 919a634ed..218db3aec 100644
--- a/src/sandbox/with/document.ts
+++ b/src/sandbox/with/document.ts
@@ -256,7 +256,8 @@ function createMicroDocument (appName: string, proxyDocument: Document): Functio
   class MicroDocument {
     static [Symbol.hasInstance] (target: unknown) {
       let proto = target
-      while (proto = Object.getPrototypeOf(proto)) {
+      while (proto) {
+        proto = Object.getPrototypeOf(proto)
         if (proto === MicroDocument.prototype) {
           return true
         }