From 5fa58c92165e23386b8ed3c3079103997fe1bef9 Mon Sep 17 00:00:00 2001
From: David Sherret <dsherret@users.noreply.github.com>
Date: Thu, 8 Jul 2021 09:43:36 -0400
Subject: fix: inspecting prototypes of built-ins with custom inspect
 implementations should not throw (#11308)

---
 extensions/web/01_dom_exception.js | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

(limited to 'extensions/web/01_dom_exception.js')

diff --git a/extensions/web/01_dom_exception.js b/extensions/web/01_dom_exception.js
index 90ddb267b..3e282d969 100644
--- a/extensions/web/01_dom_exception.js
+++ b/extensions/web/01_dom_exception.js
@@ -17,6 +17,7 @@
     ObjectSetPrototypeOf,
   } = window.__bootstrap.primordials;
   const webidl = window.__bootstrap.webidl;
+  const consoleInternal = window.__bootstrap.console;
 
   // Defined in WebIDL 4.3.
   // https://heycam.github.io/webidl/#idl-DOMException
@@ -109,8 +110,20 @@
       return "DOMException";
     }
 
-    [Symbol.for("Deno.customInspect")]() {
-      return `DOMException: ${this.#message}`;
+    [Symbol.for("Deno.customInspect")](inspect) {
+      if (this instanceof DOMException) {
+        return `DOMException: ${this.#message}`;
+      } else {
+        return inspect(consoleInternal.createFilteredInspectProxy({
+          object: this,
+          evaluate: false,
+          keys: [
+            "message",
+            "name",
+            "code",
+          ],
+        }));
+      }
     }
   }
 
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