test.js

const { Suite } = require("benchmark");
const Random = require("random-js");
const { map, into, compose, filter, take, pluck } = require("ramda");

const suite = new Suite();
const random = new Random();

function present({ name, hz, count }) {
  console.log(
    `
    Name: ${name}
    HZ: ${hz}
    Count: ${count}
  `
  );
}

function makeScore(gameID) {
  const my = random.integer(0, 5);
  const others = random.integer(0, 5);

  return { gameID, my, others };
}

function makeScores(length) {
  return Array.from({ length }, (_, gameID) => makeScore(gameID));
}

const scores = makeScores(1000);

suite
  .add("Array methods", () => {
    scores
      .filter(({ my, others }) => my > others)
      .map(({ gameID }) => gameID)
      .slice(0, 2);
  })
  .add("Transducers", () => {
    const result = into(
      [],
      compose(
        filter(({ my, others }) => my > others),
        pluck("gameID"),
        take(2)
      ),
      scores
    );
  })
  .add("For", () => {
    const result = [];
    for(const { my, others, gameID } of scores)
      if(my > others)
      {
        result.push(gameID);
        if(result.length >= 2)
          break;
      }
  })
  .on("complete", ({ currentTarget: { 0: array, 1: transducers, 2: foreach } }) => {
    present(array);
    present(transducers);
    present(foreach);
  })
  .run();