ramda: compose, bboth, either, gte, prop, equals, __

ramda0.js

import { compose, both, either, gte, prop, equals, __ } from "ramda"

const OUR_COUNTRY = "France"

const wasBornInCountry = compose(
  equals(OUR_COUNTRY),
  prop("birthCountry"),
)
const wasNaturalized = compose(
  Boolean,
  prop("naturalizationDate"),
)
const isOver18 = compose(
  gte(__, 18),
  prop("age"),
)

const isCitizen = either(wasBornInCountry, wasNaturalized)

const isEligibleToVote = both(isOver18, isCitizen)

console.log(isCitizen({ age: 21, birthCountry: "France" }))
console.log(isEligibleToVote({ age: 21, birthCountry: "Wakanda", naturalizationDate: "someDate" }))
console.log(isEligibleToVote({ age: 16, birthCountry: "France" }))