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Running Benchmark.js tests using Playwright
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Benchmark.js test</title> | |
| <meta charset="utf-8"> | |
| </head> | |
| <body> | |
| <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script> | |
| <script src="https://cdn.jsdelivr.net/npm/benchmark@2.1.4/benchmark.min.js"></script> | |
| <script src="bench.js"></script> | |
| </body> | |
| </html> |
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| const suite = new Benchmark.Suite(); | |
| const values = []; | |
| for (let i = 0; i < 1000000; i++) { | |
| values.push(i); | |
| } | |
| function some(list, predicate) { | |
| if (list == null) { | |
| return false; | |
| } | |
| for (let i = 0; i < list.length; i++) { | |
| if (predicate(list[i], i)) { | |
| return true; | |
| } | |
| } | |
| return false; | |
| } | |
| suite | |
| .add('Array.prototype.some', () => { | |
| const processed = values.some(value => value > 990000); | |
| }) | |
| .add('for loop', () => { | |
| const processed = some(values, value => value > 990000); | |
| }) | |
| .on('cycle', event => { | |
| const benchmark = event.target; | |
| console.log(benchmark.toString()); | |
| }) | |
| .on('complete', () => console.log('Benchmark suite complete.')) | |
| .run(); |
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| const { test } = require('@playwright/test'); | |
| test('Run benchmarks', async ({ page }) => { | |
| let benchmarkPromise = new Promise(resolve => { | |
| page.on('console', async message => { | |
| if (message.text() === 'Benchmark suite complete.') { | |
| // if the suite has finished, we're done | |
| resolve(); | |
| } else { | |
| // pipe through any other console output | |
| console[message.type()](message); | |
| } | |
| }); | |
| }); | |
| await page.goto(`file://${process.cwd()}/bench.html`); | |
| await benchmarkPromise; | |
| }); |
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I forked this and added more benchmarks of various interesting tasks. I also run them in GitHub actions: https://github.com/BurntCaramel/browser-workout Thanks!