javascript composition with ramda

composition.js

var R = require('ramda');

var people = [
  {
    name: 'Adam',
    age: 30,
    gender: 'm',
    party: 'd'
  },
  {
    name: 'Brittany',
    age: 25,
    gender: 'f',
    party: 'r'
  },
  {
    name: 'Russell',
    age: 24,
    gender: 'm',
    party: 'r'
  },
  {
    name: 'Joe',
    age: 30,
    gender: 'm',
    party: 'r'
  }
];

var target = R.compose(
              R.reduce(addAge, 0),
              R.filter(republicans),
              R.filter(males)
            );

console.log(target(people));

function addAge(prev, current) {
  return prev + current.age;  
}

function republicans(person) {
  return person.party === 'r';
}

function add(prev, current, idx, array) {
  return prev + current.age;
}

function males(person) {
  return person.gender === 'm';
}