Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

benchmark: rewrite detect-esm-syntax benchmark #55238

Merged
merged 1 commit into from
Oct 9, 2024
Merged

benchmark: rewrite detect-esm-syntax benchmark #55238

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
33 changes: 16 additions & 17 deletions benchmark/esm/detect-esm-syntax.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4,34 +4,33 @@
// We use the TypeScript fixture because it's a very large CommonJS file with no ESM syntax: the worst case.
const common = require('../common.js');
const tmpdir = require('../../test/common/tmpdir.js');
const fixtures = require('../../test/common/fixtures.js');
const scriptPath = fixtures.path('snapshot', 'typescript.js');
const fs = require('node:fs');

const bench = common.createBenchmark(main, {
type: ['with-module-syntax-detection', 'without-module-syntax-detection'],
type: ['with-package-json', 'without-package-json'],
n: [1e4],
}, {
flags: ['--experimental-detect-module'],
});

const benchmarkDirectory = tmpdir.fileURL('benchmark-detect-esm-syntax');
const ambiguousURL = new URL('./typescript.js', benchmarkDirectory);
const explicitURL = new URL('./typescript.cjs', benchmarkDirectory);

async function main({ n, type }) {
tmpdir.refresh();
fs.mkdirSync(tmpdir.resolve('bench'));

fs.mkdirSync(benchmarkDirectory, { recursive: true });
fs.cpSync(scriptPath, ambiguousURL);
fs.cpSync(scriptPath, explicitURL);

bench.start();

let loader = '';
const modules = [];
for (let i = 0; i < n; i++) {
const url = type === 'with-module-syntax-detection' ? ambiguousURL : explicitURL;
await import(url);
const url = tmpdir.fileURL('bench', `mod${i}.js`);
fs.writeFileSync(url, `const foo${i} = ${i};\nexport { foo${i} };\n`);
loader += `import { foo${i} } from './mod${i}.js';\n`;
modules.push(url);
}
const loaderURL = tmpdir.fileURL('bench', 'load.js');
fs.writeFileSync(loaderURL, loader);

if (type === 'with-package-json') {
fs.writeFileSync(tmpdir.resolve('bench', 'package.json'), '{ "type": "module" }');
}

bench.start();
await import(loaderURL);
bench.end(n);
}
Loading