promise-handling.js

   1 const Benchmark = require('benchmark')
   2 const { LIST_FORMATTER } = require('./benchmark-utils')
   3
   4 const suite = new Benchmark.Suite()
   5
   6 function promise () {
   7   return new Promise()
   8 }
   9
  10 async function asyncFunction () {
  11   await promise()
  12 }
  13
  14 suite
  15   .add('await promise', async function () {
  16     await asyncFunction()
  17   })
  18   .add('promise', function () {
  19     asyncFunction()
  20   })
  21   .on('cycle', function (event) {
  22     console.log(event.target.toString())
  23   })
  24   .on('complete', function () {
  25     console.log(
  26       'Fastest is ' + LIST_FORMATTER.format(this.filter('fastest').map('name'))
  27     )
  28     // eslint-disable-next-line no-process-exit
  29     process.exit()
  30   })
  31   .run()