Function composition (also with ramda )

compose.js

// custom 
const compose = (...functions) => data =>
  functions.reduceRight((value, func) => func(value), data)

const pipe = (...functions) => data =>
  functions.reduce((value, func) => func(value), data)

// with ramda 
import r from 'ramda';

const addFive = a => a + 5;
const addTen = a => a + 10;

// r.compose or r.pipe 
const doCompose = r.compose(
  addFive,
  addTen
);

const result = doCompose(5);

// or 
const doComposeFully = r.compose(
  addFive,
  addTen
)(5);