promise-handling.mjs

   1 import Benchmark from 'benny'
   2
   3 /**
   4  *
   5  */
   6 async function promise () {
   7   return await new Promise(resolve => {
   8     resolve()
   9   })
  10 }
  11
  12 /**
  13  *
  14  */
  15 async function asyncFunction () {
  16   return await promise()
  17 }
  18
  19 Benchmark.suite(
  20   'Promise handling',
  21   Benchmark.add('await promise', async () => {
  22     try {
  23       return await asyncFunction()
  24     } catch (e) {
  25       console.error(e)
  26     }
  27   }),
  28   Benchmark.add('promise with then().catch()', () => {
  29     asyncFunction()
  30       .then(r => {
  31         return r
  32       })
  33       .catch(e => {
  34         console.error(e)
  35       })
  36   }),
  37   Benchmark.add('voided promise', () => {
  38     // eslint-disable-next-line no-void
  39     void asyncFunction()
  40   }),
  41   Benchmark.add('mishandled promise', () => {
  42     asyncFunction()
  43   }),
  44   Benchmark.cycle(),
  45   Benchmark.complete(),
  46   Benchmark.save({
  47     file: 'promise-handling',
  48     format: 'json',
  49     details: true
  50   }),
  51   Benchmark.save({
  52     file: 'promise-handling',
  53     format: 'chart.html',
  54     details: true
  55   }),
  56   Benchmark.save({
  57     file: 'promise-handling',
  58     format: 'table.html',
  59     details: true
  60   })
  61 ).catch(err => {
  62   console.error(err)
  63 })