format-dateTime.js

const getLeadingZero = number => (number < 10 ? `0${number}` : number)

export const formatDate = dateString => {
  const dateTime = new Date(dateString)
  const year = dateTime.getFullYear()
  const month = getLeadingZero(dateTime.getMonth() + 1)
  const day = getLeadingZero(dateTime.getDate())
  const hours = getLeadingZero(dateTime.getHours())
  const minutes = getLeadingZero(dateTime.getMinutes())
  return { date: `${year}-${month}-${day}`, time: `${hours}:${minutes}` }
}