fix(isPlainObject): support check Object.create(null) (#4633)

Co-authored-by: Tim Dorr <timdorr@users.noreply.github.com>
reduxjs · Dec 6, 2023 · cfc3145 · cfc3145
1 parent 0e8a7b0
commit cfc3145
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diff --git a/src/utils/isPlainObject.ts b/src/utils/isPlainObject.ts
@@ -10,5 +10,5 @@ export default function isPlainObject(obj: any): obj is object {
     proto = Object.getPrototypeOf(proto)
   }
 
-  return Object.getPrototypeOf(obj) === proto
+  return Object.getPrototypeOf(obj) === proto || Object.getPrototypeOf(obj) === null
 }
diff --git a/test/utils/isPlainObject.spec.ts b/test/utils/isPlainObject.spec.ts
@@ -12,5 +12,6 @@ describe('isPlainObject', () => {
     expect(isPlainObject(null)).toBe(false)
     expect(isPlainObject(undefined)).toBe(false)
     expect(isPlainObject({ x: 1, y: 2 })).toBe(true)
+    expect(isPlainObject(Object.create(null))).toBe(true)
   })
 })