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/40_testing.js | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

(limited to 'runtime/js/40_testing.js')

diff --git a/runtime/js/40_testing.js b/runtime/js/40_testing.js
index 62eb1e9a9..5979a523e 100644
--- a/runtime/js/40_testing.js
+++ b/runtime/js/40_testing.js
@@ -9,15 +9,14 @@
   const { serializePermissions } = window.__bootstrap.permissions;
   const { assert } = window.__bootstrap.util;
   const {
-    AggregateErrorPrototype,
+    AggregateError,
     ArrayPrototypeFilter,
     ArrayPrototypePush,
     ArrayPrototypeShift,
     ArrayPrototypeSome,
     DateNow,
     Error,
-    FunctionPrototype,
-    ObjectPrototypeIsPrototypeOf,
+    Function,
     Number,
     ObjectKeys,
     Promise,
@@ -531,7 +530,7 @@ finishing test case.`;
   }
 
   function formatError(error) {
-    if (ObjectPrototypeIsPrototypeOf(AggregateErrorPrototype, error)) {
+    if (error instanceof AggregateError) {
       const message = error
         .errors
         .map((error) =>
@@ -985,7 +984,7 @@ finishing test case.`;
         /** @returns {TestStepDefinition} */
         function getDefinition() {
           if (typeof nameOrTestDefinition === "string") {
-            if (!(ObjectPrototypeIsPrototypeOf(FunctionPrototype, fn))) {
+            if (!(fn instanceof Function)) {
               throw new TypeError("Expected function for second argument.");
             }
             return {
-- 
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