From 71cadd1fa549937c1a2e9d8d7577361d0dfde321 Mon Sep 17 00:00:00 2001
From: ehmicky <ehmicky@gmail.com>
Date: Mon, 13 Jun 2022 20:38:28 +0200
Subject: [PATCH 1/2] Make it work across realms

---
 index.js  | 2 +-
 readme.md | 5 +++++
 test.js   | 2 ++
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 418b079..e4deb75 100644
--- a/index.js
+++ b/index.js
@@ -4,5 +4,5 @@ export default function isPlainObject(value) {
 	}
 
 	const prototype = Object.getPrototypeOf(value);
-	return prototype === null || prototype === Object.prototype;
+	return prototype === null || Object.getPrototypeOf(prototype) === null;
 }
diff --git a/readme.md b/readme.md
index d63a165..db3e540 100644
--- a/readme.md
+++ b/readme.md
@@ -14,6 +14,7 @@ $ npm install is-plain-obj
 
 ```js
 import isPlainObject from 'is-plain-obj';
+import {runInNewContext} from 'vm';
 
 isPlainObject({foo: 'bar'});
 //=> true
@@ -24,6 +25,10 @@ isPlainObject(new Object());
 isPlainObject(Object.create(null));
 //=> true
 
+// This works across realms
+isPlainObject(runInNewContext('({})'));
+//=> true
+
 isPlainObject([1, 2, 3]);
 //=> false
 
diff --git a/test.js b/test.js
index 993e9a8..913cebe 100644
--- a/test.js
+++ b/test.js
@@ -1,5 +1,6 @@
 import test from 'ava';
 import isPlainObject from './index.js';
+import {runInNewContext} from 'vm';
 
 function Foo(x) {
 	this.x = x;
@@ -16,6 +17,7 @@ test('main', t => {
 	t.true(isPlainObject({valueOf: 0}));
 	t.true(isPlainObject(Object.create(null)));
 	t.true(isPlainObject(new Object())); // eslint-disable-line no-new-object
+	t.true(isPlainObject(runInNewContext('({})')));
 	t.false(isPlainObject(['foo', 'bar']));
 	t.false(isPlainObject(new Foo(1)));
 	t.false(isPlainObject(Math));

From c564b3b8336834ef89e39f2fb498154fc068b8f5 Mon Sep 17 00:00:00 2001
From: ehmicky <ehmicky@gmail.com>
Date: Tue, 14 Jun 2022 15:24:04 +0200
Subject: [PATCH 2/2] Fix index.d.ts

---
 index.d.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/index.d.ts b/index.d.ts
index 810df73..84c0277 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -6,6 +6,7 @@ An object is plain if it's created by either `{}`, `new Object()`, or `Object.cr
 @example
 ```
 import isPlainObject from 'is-plain-obj';
+import {runInNewContext} from 'vm';
 
 isPlainObject({foo: 'bar'});
 //=> true
@@ -16,6 +17,10 @@ isPlainObject(new Object());
 isPlainObject(Object.create(null));
 //=> true
 
+// This works across realms
+isPlainObject(runInNewContext('({})'));
+//=> true
+
 isPlainObject([1, 2, 3]);
 //=> false