Function withTimeout

src/pkg/utils/with_timeout.ts:7–15

(promise: Promise<T>, ms: number, onTimeoutError?: () => Error)

 * @param onTimeoutError 可选：自定义超时错误构造器；默认抛 Error("operation timed out")
 */
export function withTimeout<T>(promise: Promise<T>, ms: number, onTimeoutError?: () => Error): Promise<T> {
  let timer: ReturnType<typeof setTimeout>;
  const timeoutPromise = new Promise<never>((_, reject) => {
    timer = setTimeout(() => {
      reject(onTimeoutError ? onTimeoutError() : new Error("operation timed out"));
    }, ms);
  });
  return Promise.race([promise, timeoutPromise]).finally(() => clearTimeout(timer));
}