How to use the xe-utils.isDate function in xe-utils

list.forEach((item, index) => {
            if (XEUtils.isDate(item.date)) {
              item.date = item.date.getTime()
            }
            // 重新生成排序后的序号
            item.seq = index
          })
          this.loading = true

updateRecords.forEach(item => {
              if (XEUtils.isDate(item.date)) {
                item.date = item.date.getTime()
              }
            })
            this.loading = true

this.$refs.elxEditable.validateRow(row, valid => {
        if (valid) {
          let url = '/api/user/add'
          if (row.id) {
            url = '/api/user/update'
          }
          if (XEUtils.isDate(row.date)) {
            row.date = row.date.getTime()
          }
          this.loading = true
          this.$refs.elxEditable.clearActive()
          XEAjax.doPost(url, row).then(({ data }) => {
            this.findList()
            Message({ message: '保存成功', type: 'success' })
          }).catch(e => {
            this.loading = false
          })
        }
      })
    },

updateRecords.forEach(item => {
              if (XEUtils.isDate(item.date)) {
                item.date = item.date.getTime()
              }
            })
            this.loading = true

updateRecords.forEach(item => {
              if (XEUtils.isDate(item.date)) {
                item.date = item.date.getTime()
              }
            })
            this.loading = true

updateRecords.forEach(item => {
              if (XEUtils.isDate(item.date)) {
                item.date = item.date.getTime()
              }
            })
            this.loading = true

this.$refs.elxEditable.validateRow(row, valid => {
        if (valid) {
          let url = '/api/user/add'
          if (row.id) {
            url = '/api/user/update'
          }
          if (XEUtils.isDate(row.date)) {
            row.date = row.date.getTime()
          }
          this.loading = true
          this.$refs.elxEditable.clearActive()
          XEAjax.doPost(url, row).then(({ data }) => {
            this.findList()
            Message({ message: '保存成功', type: 'success' })
          })
        }
      })
    },

insertRecords.forEach(item => {
          if (XEUtils.isDate(item.date)) {
            item.date = item.date.getTime()
          }
        })
        updateRecords.forEach(item => {

insertRecords.forEach(item => {
              if (XEUtils.isDate(item.date)) {
                item.date = item.date.getTime()
              }
            })
            updateRecords.forEach(item => {

}
              this.columnLoading = true
              this.$refs[name].clearActive()
              XEAjax.doPost(url, row).then(({ data }) => {
                this.findColumnList()
                Message({ message: '保存成功', type: 'success' })
              }).catch(e => {
                this.columnLoading = false
              })
              break
            case 'elxEditable2':
              url = '/api/user/add'
              if (row.id) {
                url = '/api/user/update'
              }
              if (XEUtils.isDate(row.date)) {
                row.date = row.date.getTime()
              }
              this.userLoading = true
              this.$refs[name].clearActive()
              XEAjax.doPost(url, row).then(({ data }) => {
                this.findUserList()
                Message({ message: '保存成功', type: 'success' })
              }).catch(e => {
                this.userLoading = false
              })
              break
          }
        }
      })
    },