bench.array.vs.map.js

var Benchmark = require('benchmark')
var suite = new Benchmark.Suite('Couting numbers')
const chalk = require('chalk')

console.log('------ prepare data')


let total = 100000// 10000000 // 10 million

const arrs = []
let strings = ''
for (let x = 0; x <= total; x++) {
  arrs.push([x, x])
  strings = strings + `${x},`
}
const store = new Map(arrs)
// add tests
suite
    .add('using Map as Store', function () {
      function someFunction1() {
        
          
          
          for (let x = 0; x <= total; x++) {
            const val = store.get(x)
          }
      }
      someFunction1()
    })
    .add('using Array as Store', function () {
        function someFunction2() {
          for (let x = 0; x <= total; x++) {
            const val = arrs[x]
          }
        }
        someFunction2()

    })
    .add('using String as Store', function () {
      function someFunction2() {
        for (let x = 0; x <= total; x++) {
          const val = strings[x]
        }
      }
      someFunction2()

  })
    // add listeners
    .on('cycle', function (event) {
        console.log(chalk.magenta(String(event.target)))
    })
    .on('complete', function () {
        // console.log(this.filter('fastest'))
        const fastest = this.filter('fastest')
        console.log(chalk.green('Fastest is ' + fastest.map('name')))

        function compare(a, b) {
            if (a > b)
                return (a / b * 100).toFixed() + '% faster';
            if (a == b)
                return "the same";
            return (b / a * 100).toFixed() + '% slower';
        }
        console.log(chalk.blue(`${fastest.map('name')} is ${compare(fastest.map('hz'), this[1].hz)} than ${this[0].name}`));
    })
    // run async
    .run({
        async: true
    })