import { addYears, formatWithOptions } from 'date-fns/fp'

import { eo } from 'date-fns/locale'

​

const addFiveYears = addYears(5)

​

const dateToString = formatWithOptions({ locale: eo }, 'D MMMM YYYY')

​

const dates = [

  new Date(2017, 0, 1),

  new Date(2017, 1, 11),

  new Date(2017, 6, 2)

]

​

const toUpper = arg => String(arg).toUpperCase()

​

const formattedDates = dates.map(addFiveYears).map(dateToString).map(toUpper)

//=> ['1 JANUARO 2022', '11 FEBRUARO 2022', '2 JULIO 2022']