ALT if (signal) signal.addEventListener('abort', () => controller.abort()); const timeout = setTimeout(() => controller.abort(), ms); // Avoid creating a closure over `this`, `init`, or `options` to prevent memory leaks. // An arrow function like `() => controller.abort()` captures the surrounding scope, // which includes the request body and other large objects. When the user passes a // long-lived AbortSignal, the listener prevents those objects from being GC'd for // the lifetime of the signal. Using `.bind()` only retains a reference to the // controller itself. const abort = controller.abort.bind(controller); if (signal) signal.addEventListener('abort', abort, { once: true }); const timeout = setTimeout(abort, ms);