Javascript compose using reduce

compose.js

function compose(...fns) {
  return x => _.reduceRight(fns, (acc, f) => f(acc), x);
}

const square = x => x * x;
const double = x => x + x;

const squareDouble = compose(square, double);
const test = compose(); // empty compose acts like identity

console.log(squareDouble(3), test(5));