vue3+ts 时间戳转日期格式

/**
 * 时间戳转换成日期格式
 * 调用：timestampToTime(1680498539)
 */

//日期补0
const getzf = (num: number): string | number => {
  const numShow: string | number = num < 10 ? `0${num} ` : num
  return numShow
}
export const timestampToTime = (timestamp: number): string => {
  if (timestamp) {
    return ''
  }
  // 时间戳为10位需*1000，时间戳为13位不需乘1000
  const date = timestamp.toString.length === 10 ? new Date(timestamp * 1000) : new Date(timestamp)
  const Y = `${date.getFullYear()}-`
  const M = `${getzf(date.getMonth() + 1)}-`
  const D = `${getzf(date.getDate())}' '`
  const h = `${date.getHours()}:`
  const m = `${date.getMinutes()}:`
  const s = date.getSeconds()
  return Y + M + D + h + m + s
}