perf: use .abort.bind() instead of arrow closures to prevent memory leaks (#7174)

src/agents/model-scan.ts

@@ -185,7 +185,7 @@ async function withTimeout<T>(
   fn: (signal: AbortSignal) => Promise<T>,
 ): Promise<T> {
   const controller = new AbortController();
-  const timer = setTimeout(() => controller.abort(), timeoutMs);
+  const timer = setTimeout(controller.abort.bind(controller), timeoutMs);
   try {
     return await fn(controller.signal);
   } finally {

src/agents/pi-tools.abort.ts

@@ -36,7 +36,7 @@ function combineAbortSignals(a?: AbortSignal, b?: AbortSignal): AbortSignal | un
   }
 
   const controller = new AbortController();
-  const onAbort = () => controller.abort();
+  const onAbort = controller.abort.bind(controller);
   a?.addEventListener("abort", onAbort, { once: true });
   b?.addEventListener("abort", onAbort, { once: true });
   return controller.signal;

src/agents/sandbox/browser.ts

@@ -24,7 +24,7 @@ async function waitForSandboxCdp(params: { cdpPort: number; timeoutMs: number })
   while (Date.now() < deadline) {
     try {
       const ctrl = new AbortController();
-      const t = setTimeout(() => ctrl.abort(), 1000);
+      const t = setTimeout(ctrl.abort.bind(ctrl), 1000);
       try {
         const res = await fetch(url, { signal: ctrl.signal });
         if (res.ok) {

src/agents/tools/web-shared.ts

@@ -65,7 +65,7 @@ export function withTimeout(signal: AbortSignal | undefined, timeoutMs: number):
     return signal ?? new AbortController().signal;
   }
   const controller = new AbortController();
-  const timer = setTimeout(() => controller.abort(), timeoutMs);
+  const timer = setTimeout(controller.abort.bind(controller), timeoutMs);
   if (signal) {
     signal.addEventListener(
       "abort",