// firefox < 121, safari < 17.4
Promise.withResolvers = <T>() => {
  let resolve!: PromiseWithResolvers<T>["resolve"];
  let reject!: PromiseWithResolvers<T>["reject"];
  const promise = new Promise<T>((resolve_, reject_) => {
    resolve = resolve_;
    reject = reject_;
  });
  return { promise, resolve, reject };
};