- Node 6.3.1:
- macOS:
I try use proxies for my project and created the
https://github.com/fundon/delegate-proxy.
But results from the benchmarks, proxy is very slowly.
How to improve it?
Source code
module.exports = function delegateProxy (target, origin) {
return new Proxy(target, {
get (target, key, receiver) {
if (Reflect.has(target, key)) return Reflect.get(target, key, receiver)
const value = origin[key]
return 'function' === typeof value ? function method () {
return value.apply(origin, arguments)
} : value
},
set (target, key, value, receiver) {
if (Reflect.has(target, key)) return Reflect.set(target, key, value,
receiver)
origin[key] = value
return true
}
})
}
Benchmarks code, delegate-proxy VS delegates
const Benchmark = require('benchmark')const delegate =
require('delegates')const delegateProxy = require('..')
const obj = {}
const p1 = {}const d1 = delegateProxy(p1, obj)
const d0 = {}d0.obj = objconst d = delegate(d0, 'obj')
for (let i = 0, l = 1000; i < l; i++) {
obj[`a${i}`] = i
obj[`b${i}`] = function () {}
obj[`c${i}`] = i
d.getter(`a${i}`)
d.method(`b${i}`)
d.access(`c${i}`)
}
const suite = new Benchmark.Suite()
suite
.add('delegates#getter', () => {
/* eslint no-unused-expressions: 0 */
d0.a0 === 0 ? 1 : 0
})
.add('delegateProxy#getter', () => {
/* eslint no-unused-expressions: 0 */
d1.a0 === 0 ? 1 : 0
})
.on('cycle', event => {
console.log(String(event.target))
})
.on('complete', function () {
console.log('Fastest is ' + this.filter('fastest').map('name'))
})
.run()
const suite2 = new Benchmark.Suite()
suite2
.add('delegates#method', () => {
d0.b0()
})
.add('delegateProxy#method', () => {
d1.b0()
})
.on('cycle', event => {
console.log(String(event.target))
})
.on('complete', function () {
console.log('Fastest is ' + this.filter('fastest').map('name'))
})
.run()
const suite3 = new Benchmark.Suite()
suite3
.add('delegates#access', () => {
d0.c0 = 1
})
.add('delegateProxy#access', () => {
d1.c0 = 1
})
.on('cycle', event => {
console.log(String(event.target))
})
.on('complete', function () {
console.log('Fastest is ' + this.filter('fastest').map('name'))
})
.run()
const suite4 = new Benchmark.Suite()
suite4
.add('Reflect#get', () => {
Reflect.get(obj, 'a0')
})
.add('obj#key', () => {
/* eslint dot-notation: 0 */
obj['a0']
})
.add('obj.key', () => {
obj.a0
})
.on('cycle', event => {
console.log(String(event.target))
})
.on('complete', function () {
console.log('Fastest is ' + this.filter('fastest').map('name'))
})
.run()
const suite5 = new Benchmark.Suite()
suite5
.add('Reflect#has', () => {
Reflect.has(d0, 'a0')
})
.add('key in d0', () => {
'a0' in d0
})
.on('cycle', event => {
console.log(String(event.target))
})
.on('complete', function () {
console.log('Fastest is ' + this.filter('fastest').map('name'))
})
.run()
const suite6 = new Benchmark.Suite()
suite6
.add('Reflect#set', () => {
Reflect.set(obj, 'a0', 2)
})
.add('obj#key=', () => {
/* eslint dot-notation: 0 */
obj['a0'] = 2
})
.on('cycle', event => {
console.log(String(event.target))
})
.on('complete', function () {
console.log('Fastest is ' + this.filter('fastest').map('name'))
})
.run()
Results
delegates#getter x 2,414,206 ops/sec ±0.81% (83 runs sampled)
delegateProxy#getter x 1,383,270 ops/sec ±0.94% (84 runs sampled)
Fastest is delegates#getter
delegates#method x 4,707,516 ops/sec ±6.25% (53 runs sampled)
delegateProxy#method x 1,339,755 ops/sec ±6.93% (65 runs sampled)
Fastest is delegates#method
delegates#access x 2,427,859 ops/sec ±8.88% (67 runs sampled)
delegateProxy#access x 1,344,403 ops/sec ±10.72% (47 runs sampled)
Fastest is delegates#access
Reflect#get x 7,481,142 ops/sec ±2.35% (82 runs sampled)
obj#key x 35,676,972 ops/sec ±0.73% (83 runs sampled)
obj.key x 35,687,692 ops/sec ±0.65% (82 runs sampled)
Fastest is obj.key,obj#key
Reflect#has x 8,369,451 ops/sec ±4.04% (77 runs sampled)
key in d0 x 10,618,353 ops/sec ±7.39% (51 runs sampled)
Fastest is key in d0
Reflect#set x 6,356,287 ops/sec ±7.22% (56 runs sampled)
obj#key= x 32,970,782 ops/sec ±1.74% (82 runs sampled)
Fastest is obj#key=
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