events: remove eventtarget custom inspect branding

efekrskl · aduh95 · commit 42e1f7256163 · 2026-01-19T19:19:27.000+01:00
PR-URL: #61128 Reviewed-By: Aviv Keller <me@aviv.sh> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
diff --git a/lib/internal/event_target.js b/lib/internal/event_target.js
@@ -867,8 +867,6 @@ class EventTarget {
     return new CustomEvent(type, { detail: nodeValue });
   }
   [customInspectSymbol](depth, options) {
-    if (!isEventTarget(this))
-      throw new ERR_INVALID_THIS('EventTarget');
     const name = this.constructor.name;
     if (depth < 0)
       return name;
diff --git a/test/parallel/test-eventtarget-custom-inspect-does-not-throw.js b/test/parallel/test-eventtarget-custom-inspect-does-not-throw.js
@@ -0,0 +1,19 @@
+'use strict';
+
+require('../common');
+const assert = require('assert');
+const util = require('util');
+
+const symbol = util.inspect.custom;
+
+const eventTargetInspect = EventTarget.prototype[symbol];
+
+const fakeEventTarget = {
+  [symbol]: eventTargetInspect,
+  someOtherField: 42
+};
+
+// Should not throw when calling the custom inspect method
+const output = util.inspect(fakeEventTarget);
+
+assert.strictEqual(typeof output, 'string');

Original file line number	Diff line number	Diff line change
`@@ -867,8 +867,6 @@ class EventTarget {`
`867`	`867`	`return new CustomEvent(type, { detail: nodeValue });`
`868`	`868`	`}`
`869`	`869`	`[customInspectSymbol](depth, options) {`
`870`		`- if (!isEventTarget(this))`
`871`		`- throw new ERR_INVALID_THIS('EventTarget');`
`872`	`870`	`const name = this.constructor.name;`
`873`	`871`	`if (depth < 0)`
`874`	`872`	`return name;`