From f248e6f1778dc26db91d3322de2ecca5d1aa9866 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartek=20Iwa=C5=84czuk?= <biwanczuk@gmail.com>
Date: Thu, 27 Jan 2022 16:27:22 +0100
Subject: Revert "refactor: update runtime code for primordial checks for
 "instanceof" (#13497)" (#13511)

This reverts commit 884143218fad0e18f7553aaf079d52de703f7601.
---
 runtime/js/99_main.js | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

(limited to 'runtime/js/99_main.js')

diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index 5a4d7e989..ba2b36705 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -16,7 +16,6 @@ delete Object.prototype.__proto__;
     ObjectDefineProperty,
     ObjectDefineProperties,
     ObjectFreeze,
-    ObjectPrototypeIsPrototypeOf,
     ObjectSetPrototypeOf,
     PromiseResolve,
     Symbol,
@@ -143,9 +142,7 @@ delete Object.prototype.__proto__;
       const msgEvent = new MessageEvent("message", {
         cancelable: false,
         data: message,
-        ports: transferables.filter((t) =>
-          ObjectPrototypeIsPrototypeOf(messagePort.MessagePortPrototype, t)
-        ),
+        ports: transferables.filter((t) => t instanceof MessagePort),
       });
 
       try {
@@ -314,7 +311,7 @@ delete Object.prototype.__proto__;
       configurable: true,
       enumerable: true,
       get() {
-        webidl.assertBranded(this, NavigatorPrototype);
+        webidl.assertBranded(this, Navigator);
         return webgpu.gpu;
       },
     },
@@ -322,12 +319,11 @@ delete Object.prototype.__proto__;
       configurable: true,
       enumerable: true,
       get() {
-        webidl.assertBranded(this, NavigatorPrototype);
+        webidl.assertBranded(this, Navigator);
         return numCpus;
       },
     },
   });
-  const NavigatorPrototype = Navigator.prototype;
 
   class WorkerNavigator {
     constructor() {
@@ -346,7 +342,7 @@ delete Object.prototype.__proto__;
       configurable: true,
       enumerable: true,
       get() {
-        webidl.assertBranded(this, WorkerNavigatorPrototype);
+        webidl.assertBranded(this, WorkerNavigator);
         return webgpu.gpu;
       },
     },
@@ -354,12 +350,11 @@ delete Object.prototype.__proto__;
       configurable: true,
       enumerable: true,
       get() {
-        webidl.assertBranded(this, WorkerNavigatorPrototype);
+        webidl.assertBranded(this, WorkerNavigator);
         return numCpus;
       },
     },
   });
-  const WorkerNavigatorPrototype = WorkerNavigator.prototype;
 
   // https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope
   const windowOrWorkerGlobalScope = {
-- 
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