fix(AbortSignal.any) fire dependents signals (#11789)

src/bun.js/bindings/webcore/AbortSignal.cpp

@@ -156,6 +156,11 @@ void AbortSignal::signalAbort(JSC::JSValue reason)
 
     // 5. Fire an event named abort at signal.
     dispatchEvent(Event::create(eventNames().abortEvent, Event::CanBubble::No, Event::IsCancelable::No));
+
+    // 6. For each dependent signal of signal, call signal's signalAbort method with reason.
+    auto dependentSignals = std::exchange(m_dependentSignals, {});
+    for (auto& signal : dependentSignals)
+        signal.signalAbort(reason);
 }
 
 void AbortSignal::cleanNativeBindings(void* ref)

test/js/web/abort/abort.test.ts

@@ -39,4 +39,35 @@ describe("AbortSignal", () => {
 
     expect(exitCode).toBe(0);
   });
+
+  test("AbortSignal.any() should fire abort event", async () => {
+    async function testAny(signalToAbort: number) {
+      const { promise, resolve } = Promise.withResolvers();
+
+      const a = new AbortController();
+      const b = new AbortController();
+      // @ts-ignore
+      const signal = AbortSignal.any([a.signal, b.signal]);
+      const timeout = setTimeout(() => {
+        resolve(false);
+      }, 100);
+
+      signal.addEventListener("abort", () => {
+        clearTimeout(timeout);
+        resolve(true);
+      });
+
+      if (signalToAbort) {
+        b.abort();
+      } else {
+        a.abort();
+      }
+
+      expect(await promise).toBe(true);
+      expect(signal.aborted).toBe(true);
+    }
+
+    await testAny(0);
+    await testAny(1);
+  });
 });