| 1 | 'use strict'
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| 2 | const Benchmark = require('benchmark')
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| 3 | const suite = new Benchmark.Suite
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| 4 |
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| 5 | let obj = process.env
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| 6 |
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| 7 | suite
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| 8 | .add('for in', function() {
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| 9 | for(let i in obj) {
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| 10 | let o = obj[i]
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| 11 | }
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| 12 | })
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| 13 | .add('while --', function() {
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| 14 | let keys = Object.keys(obj)
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| 15 | let l = keys.length
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| 16 | while(l--) {
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| 17 | let o = obj[keys[l]]
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| 18 | }
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| 19 | })
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| 20 | .add('while shift', function() {
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| 21 | let keys = Object.keys(obj)
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| 22 | let k
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| 23 |
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| 24 | while(k = keys.shift()) {
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| 25 | let o = obj[k]
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| 26 | }
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| 27 | })
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| 28 | .on('cycle', function(event) {
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| 29 | console.log(String(event.target))
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| 30 | })
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| 31 | .on('complete', function() {
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| 32 | console.log('Fastest is ' + this.filter('fastest').map('name'))
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| 33 | })
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| 34 | .run({ 'async': true })
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