fix abortsignal event names

core/runtime/src/abort/mod.rs

@@ -159,7 +159,7 @@ impl JsAbortSignal {
         context: &mut Context,
     ) -> JsResult<()> {
         if event_type.to_std_string_escaped() != "abort" {
-            return Err(js_error!(TypeError: "AbortSignal only supports the 'abort' event type"));
+            return Ok(());
         }
         if self.aborted.get() {
             callback.call(&JsValue::undefined(), &[], context)?;

core/runtime/src/abort/tests.rs

@@ -117,6 +117,51 @@ fn add_event_listener_fires_on_abort() {
     ]);
 }
 
+#[test]
+fn add_event_listener_ignores_unknown_event_names() {
+    run_test_actions([
+        TestAction::run(
+            r"
+            let ctrl = new AbortController();
+            let called = false;
+            ctrl.signal.addEventListener('nope', function() {
+                called = true;
+            });
+            ctrl.abort();
+            ",
+        ),
+        TestAction::inspect_context(|ctx| {
+            ctx.run_jobs().unwrap();
+        }),
+        TestAction::run(
+            r"
+            if (called) {
+                throw new Error('unknown event listener should not fire');
+            }
+            ",
+        ),
+    ]);
+}
+
+#[test]
+fn add_event_listener_ignores_unknown_event_names_after_abort() {
+    run_test_actions([TestAction::run(
+        r"
+        let ctrl = new AbortController();
+        ctrl.abort();
+
+        let called = false;
+        ctrl.signal.addEventListener('nope', function() {
+            called = true;
+        });
+
+        if (called) {
+            throw new Error('unknown event listener should not fire after abort');
+        }
+        ",
+    )]);
+}
+
 #[test]
 fn multiple_listeners() {
     run_test_actions([