如何获得两个日期范围数组之间的差异？

// 日期范围数组
const range1 = ['2022-01-01', '2022-01-05'];
const range2 = ['2022-01-03', '2022-01-07'];

// 将日期范围转换为实际的日期
const startDate1 = new Date(range1[0]);
const endDate1 = new Date(range1[1]);
const startDate2 = new Date(range2[0]);
const endDate2 = new Date(range2[1]);

// 确定交集和并集
const intersectionStart = startDate1 > startDate2 ? startDate1 : startDate2;
const intersectionEnd = endDate1 < endDate2 ? endDate1 : endDate2;
const unionStart = startDate1 < startDate2 ? startDate1 : startDate2;
const unionEnd = endDate1 > endDate2 ? endDate1 : endDate2;

// 计算差异
const diff = [];
if (intersectionStart < intersectionEnd) {
  const diffStart = intersectionEnd;
  const diffEnd = unionEnd;
  diff.push([diffStart.toISOString().split('T')[0], diffEnd.toISOString().split('T')[0]]);
}

console.log(diff);