如何按星期几提前获得最近的日期？

我是新来的，我需要通过一周中的天数来获得最近的日期。

根据当前日期，我需要获取，例如：

const currentWeekDay = '4'; (14.04)
const preparedAlternativeDates = [
  { DAY: 1, VALUE: '18.04' },
  { DAY: 2, VALUE: '19.04'},
  { DAY: 3, VALUE: '20.04'},
  { DAY: 4, VALUE: '21.04'},
  { DAY: 5, VALUE: '15.04'},
  { DAY: 6, VALUE: '16.04'},
  { DAY: 7, VALUE: '17.04'},
];

我正在尝试使用下面的脚本，但它不起作用。也许有更简单的方法可以做到这一点？

const ALTERNATIVE_DATES = Object.freeze([
  { DAY: 1, VALUE: null },
  { DAY: 2, VALUE: null },
  { DAY: 3, VALUE: null },
  { DAY: 4, VALUE: null },
  { DAY: 5, VALUE: null },
  { DAY: 6, VALUE: null },
  { DAY: 7, VALUE: null },
]);

const preparedAlternativeDates = ALTERNATIVE_DATES.map((alternativeDate: any) => {
  if (!alternativeDate.VALUE) {
    const alternativeDateDay = Number(alternativeDate.DAY);
    const currentWeekDay = Number(moment().isoWeekday());

    if (alternativeDateDay <= currentWeekDay) {
      alternativeDate.VALUE = moment().add(alternativeDateDay + currentWeekDay - 1, 'd').startOf('day');
    } else {
      alternativeDate.VALUE = moment().add(alternativeDateDay - currentWeekDay, 'd').startOf('day');
    }
  }

  return {
    day: alternativeDate.DAY,
    value: alternativeDate.VALUE
  };
});

我将不胜感激任何帮助。