Make a function as async one

make-promise.ts

// see: https://www.bbss.dev/posts/eventloop/

/**
 * @example
 * ```ts
 * const fn = makePromise(() => {
 *   return heavyFunc();
 * });
 * // or you can write:
 * // const fn = makePromise(heavyFunc);
 * const result = await fn();
 * ```
 */
export function makePromise<T>(fn: () => T): Promise<T> {
  return new Promise((resolve) => {
    setTimeout(() => {
      resolve(fn());
    }, 0);
  });
}