Immutable.js vs Immer

immutablejs-vs-immer.js

import { produce, enableMapSet } from "immer";
import immutable from 'immutable';
import _perf from 'execution-time';

enableMapSet();

const perf = _perf();

const counts = [100, 1000, 10_000, 100_000, 1_000_000, 10_000_000];

for (const count of counts) {
  console.log(count, 'counter');

  immutableJsTest();
  //immerTest();
  plainTest();

  function immutableJsTest() {
    perf.start();
    let map = immutable.Map();
    for (let i = 0; i < count; i++)
      map = map.set(i, i);

    const results = perf.stop();
    console.log('immutable.js', results.time);
  }

  function immerTest() {
    perf.start();
    let map = new Map();
    for (let i = 0; i < count; i++)
      map = produce(map, m => m.set(i, i));

    const results = perf.stop();
    console.log('immer', results.time);
  }

  function plainTest() {
    perf.start();
    let map = new Map();
    for (let i = 0; i < count; i++)
      map.set(i, i);

    const results = perf.stop();
    console.log('plain', results.time);
  }


}