refactor: primordials for instanceof (#13527)

1 files changed, 3 insertions, 1 deletions

diff --git a/ext/web/01_dom_exception.js b/ext/web/01_dom_exception.js
index 44aa72abe..a3beb3064 100644
--- a/ext/web/01_dom_exception.js
+++ b/ext/web/01_dom_exception.js
@@ -16,6 +16,7 @@
     ErrorPrototype,
     ObjectDefineProperty,
     ObjectEntries,
+    ObjectPrototypeIsPrototypeOf,
     ObjectSetPrototypeOf,
     SymbolFor,
   } = window.__bootstrap.primordials;
@@ -126,7 +127,7 @@
     }
 
     [SymbolFor("Deno.customInspect")](inspect) {
-      if (this instanceof DOMException) {
+      if (ObjectPrototypeIsPrototypeOf(DOMExceptionPrototype, this)) {
         return `DOMException: ${this.#message}`;
       } else {
         return inspect(consoleInternal.createFilteredInspectProxy({
@@ -145,6 +146,7 @@
   ObjectSetPrototypeOf(DOMException.prototype, ErrorPrototype);
 
   webidl.configurePrototype(DOMException);
+  const DOMExceptionPrototype = DOMException.prototype;
 
   for (
     const [key, value] of ObjectEntries({