functional-programming-1.js

var R = require("ramda");

var sales = [ {id: 1, price: 500}, {id: 2, price: 1500}, {id: 3, price: 750}, {id: 4, price: 1750}, {id: 5, price: 150}, {id: 3, price: 750}, ];

var resultWithoutRamda = sales.filter(sale => sale.price < 1000)
                  .map(sale => sale.price)
                  .sort((a, b) => a-b);

console.log(resultWithoutRamda);

var resultWithRamda = R.pipe(
    R.filter(sale => sale.price < 1000),
    R.map(sale => sale.price),
    R.sort((a,b) => a-b)
)(sales);

console.log(resultWithRamda);