Function aNow

src/pkg/utils/utils.ts:19–24

()

 * 用 aNow 取得的现在时间能保证严格递增
 */
export const aNow = () => {
  let now = Date.now();
  if (prevNow >= now) now = prevNow + 0.0009765625; // 2^-10
  prevNow = now;
  return now;
};

export type Deferred<T> = {
  promise: Promise<T>;