Index: node_modules/react-redux/src/utils/isPlainObject.ts
===================================================================
--- node_modules/react-redux/src/utils/isPlainObject.ts	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
+++ node_modules/react-redux/src/utils/isPlainObject.ts	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
@@ -0,0 +1,17 @@
+/**
+ * @param {any} obj The object to inspect.
+ * @returns {boolean} True if the argument appears to be a plain object.
+ */
+export default function isPlainObject(obj: unknown) {
+  if (typeof obj !== 'object' || obj === null) return false
+
+  const proto = Object.getPrototypeOf(obj)
+  if (proto === null) return true
+
+  let baseProto = proto
+  while (Object.getPrototypeOf(baseProto) !== null) {
+    baseProto = Object.getPrototypeOf(baseProto)
+  }
+
+  return proto === baseProto
+}