Example of vanilla JS to Ramda (Reason in Notion)

ramda.js

const { log, clear } = console
clear()

const logHof = (fn) => (...args) => pipe(
  tap(() => log('-----------------------------')),
  tap((args) => log(`args:  ${args}`)),
  fn, 
  tap((res) => log(`res:   ${res}`)),
)(...args)

///////////////////////////////////////////////////////////////////////
// Ramda
///////////////////////////////////////////////////////////////////////
/*
// offsetStringToNumber :: String -> Number
const offsetStringToNumber = pipe(
  replace('plus', '+'),
  replace('minus', '-'),
  Number,
)

// dayToOffset :: String -> Number
const dayToOffset = cond([
  [isNil, always(0)],
  [equals('tomorrow'), always(1)],
  [equals('today'), always(0)],
  [equals('yesterday'), always(-1)],
  [T, offsetStringToNumber],
])


const dayToOffsetLog = logHof(dayToOffset)
*/
///////////////////////////////////////////////////////////////////////
// Vanilla
///////////////////////////////////////////////////////////////////////

// offsetStringToNumber :: String -> Number
const offsetStringToNumber = (offset) => {
  const offsetReplaced = offset.replace('plus', '+').replace('minus', '-')
  return Number(offsetReplaced)
}

// dayToOffset :: String -> Number
const dayToOffset = (day) => {
  if (day === undefined || day === null) {
    return 0
  } else if (day === 'tomorrow') {
    return 1
  } else if (day === 'today') {
    return 0
  } else if (day === 'yesterday') {
    return -1
  } else {
    return offsetStringToNumber(day)
  }
}

const dayToOffsetLog = logHof(dayToOffset)

dayToOffsetLog(null)
dayToOffsetLog('tomorrow')
dayToOffsetLog('today')
dayToOffsetLog('yesterday')
dayToOffsetLog('plus1')
dayToOffsetLog('plus5')
dayToOffsetLog('minus1')
dayToOffsetLog('minus5')