From 2699a6e2a8a520ade7a35a031c1ccdcbc179be11 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=86=E4=B8=96=E5=BC=BA?= <lsqup0702@hotmail.com>
Date: Mon, 24 Apr 2023 00:23:24 +0800
Subject: [PATCH] fix: isPlainObject incorrectly identifies objects wrapped in
 a Proxy object in Safari 10 (#1378)

---
 packages/shared/src/utils.ts | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/packages/shared/src/utils.ts b/packages/shared/src/utils.ts
index 9aff9aa7e..3772c69de 100644
--- a/packages/shared/src/utils.ts
+++ b/packages/shared/src/utils.ts
@@ -151,8 +151,11 @@ export const objectToString = Object.prototype.toString
 export const toTypeString = (value: unknown): string =>
   objectToString.call(value)
 
-export const isPlainObject = (val: unknown): val is object =>
-  toTypeString(val) === '[object Object]'
+export const isPlainObject = (val: unknown): val is object => {
+  if (!isObject(val)) return false
+  const proto = Object.getPrototypeOf(val)
+  return proto === null || proto.constructor === Object
+}
 
 // for converting list and named values to displayed strings.
 export const toDisplayString = (val: unknown): string => {