ramda: objects (compose, inc, prop, assoc, evolve, always, add)

ramda6.js

import { compose, inc, prop, assoc, evolve, always, add } from "ramda"

const nextAge = compose(
  inc,
  prop("age"),
)
console.log("nextAge", nextAge({ age: 21 }))
const celebrateBirthday = person => assoc("age", nextAge(person), person)
const person = { age: 24 }
console.log("celebrateBirthday", celebrateBirthday(person))
console.log("person", person)

const celebrateBirthday2 = evolve({ age: inc })
console.log("celebrateBirthday2", celebrateBirthday2(person))

const me = {
  firstName: "Sébastien",
  lastName: "Nicolaïdis",
  birthDate: new Date("1979-09-13T15:00Z"),
  age: 38,
  hobbies: ["Rock climbing", "Horse riding", "Chess"],
}

const change = evolve({
  firstName: always("Bob"),
  lastName: always("Bob"),
  userName: always("Bob"),
  age: add(20),
})

console.log("(change(me)", change(me))