fix: inspecting prototypes of built-ins with custom inspect implementations should not throw (#11308)

1 files changed, 10 insertions, 0 deletions

diff --git a/cli/tests/unit/dom_exception_test.ts b/cli/tests/unit/dom_exception_test.ts
new file mode 100644
index 000000000..ea310fc9a
--- /dev/null
+++ b/cli/tests/unit/dom_exception_test.ts
@@ -0,0 +1,10 @@
+import { assertEquals, assertStringIncludes, unitTest } from "./test_util.ts";
+
+unitTest(function customInspectFunction(): void {
+  const blob = new DOMException("test");
+  assertEquals(
+    Deno.inspect(blob),
+    `DOMException: test`,
+  );
+  assertStringIncludes(Deno.inspect(DOMException.prototype), "DOMException");
+});