Created
April 29, 2020 20:56
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| const Benchmark = require("benchmark"); | |
| displayIntro() | |
| const N = 1000; | |
| const A = 'a' | |
| const B = 'b' | |
| const C = 'c' | |
| new Benchmark.Suite("array-join-vs-string", createConf()) | |
| .add("array join", () => { | |
| let i = -1; | |
| while (++i < N) [A, B, C].join(' '); | |
| }) | |
| .add("str concat", () => { | |
| let i = -1; | |
| while (++i < N) A + ' ' + B + ' ' + C | |
| }) | |
| .add("template literal", () => { | |
| let i = -1; | |
| while (++i < N) `${A} ${B} ${C}` | |
| }) | |
| .run(); | |
| function createConf() { | |
| return { | |
| onComplete(e) { | |
| this.map((bench) => | |
| console.log( | |
| JSON.stringify( | |
| { | |
| name: bench.name, | |
| hz: bench.hz.toFixed(2), | |
| relativeMarginOfError: `${bench.stats.rme.toFixed(2)}%`, | |
| runs: bench.stats.sample.length, | |
| } | |
| ) | |
| ) | |
| ); | |
| }, | |
| onError(e) { | |
| console.error(e.target.error); | |
| } | |
| } | |
| } | |
| function displayIntro() { | |
| console.log(JSON.stringify({ nodeVersion: process.version })) | |
| } |
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| {"nodeVersion":"v12.16.2"} | |
| {"name":"array join","hz":"5093.61","relativeMarginOfError":"0.82%","runs":90} | |
| {"name":"str concat","hz":"1123945.33","relativeMarginOfError":"0.63%","runs":90} | |
| {"name":"template literal","hz":"1117304.79","relativeMarginOfError":"1.68%","runs":92} |
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| { | |
| "name": "bench-array-join-vs-string-concat", | |
| "version": "1.0.0", | |
| "description": "", | |
| "main": "_bench-array-join-vs-string-concat.js", | |
| "scripts": { | |
| "test": "echo \"Error: no test specified\" && exit 1", | |
| "bench": "node _bench-array-join-vs-string-concat.js | tee _results.ldjson" | |
| }, | |
| "keywords": [], | |
| "author": "", | |
| "license": "ISC", | |
| "dependencies": { | |
| "benchmark": "^2.1.4" | |
| } | |
| } |
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| # THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY. | |
| # yarn lockfile v1 | |
| benchmark@^2.1.4: | |
| version "2.1.4" | |
| resolved "https://registry.yarnpkg.com/benchmark/-/benchmark-2.1.4.tgz#09f3de31c916425d498cc2ee565a0ebf3c2a5629" | |
| integrity sha1-CfPeMckWQl1JjMLuVloOvzwqVik= | |
| dependencies: | |
| lodash "^4.17.4" | |
| platform "^1.3.3" | |
| lodash@^4.17.4: | |
| version "4.17.15" | |
| resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548" | |
| integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A== | |
| platform@^1.3.3: | |
| version "1.3.5" | |
| resolved "https://registry.yarnpkg.com/platform/-/platform-1.3.5.tgz#fb6958c696e07e2918d2eeda0f0bc9448d733444" | |
| integrity sha512-TuvHS8AOIZNAlE77WUDiR4rySV/VMptyMfcfeoMgs4P8apaZM3JrnbzBiixKUv+XR6i+BXrQh8WAnjaSPFO65Q== |
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