npm i dayjs-range
dayjs().getTimeBorder(timestamp, type)
< timestamp > timestamp 时间戳
< type > month | quarter | year
let time = dayjs.getTimeBorder(1635952894007, 'month')
console.log(time.startDate) // 2021-11-01
console.log(time.endDate) // 2021-11-30
let time = dayjs.getTimeBorder(1635952894007, 'quarter')
console.log(time.startDate) // 2021-10-01
console.log(time.endDate) // 2021-12-31
let time = dayjs.getTimeBorder(1635952894007, 'year')
console.log(time.startDate) // 2021-01-01
console.log(time.endDate) // 2021-12-31