Upload Kmake

benchmark/esm/cjs-parse.js

@@ -0,0 +1,39 @@
+'use strict';
+const fs = require('fs');
+const path = require('path');
+const common = require('../common.js');
+const { strictEqual } = require('assert');
+
+const tmpdir = require('../../test/common/tmpdir');
+const benchmarkDirectory = tmpdir.resolve('benchmark-esm-parse');
+
+const bench = common.createBenchmark(main, {
+  n: [1e2],
+});
+
+async function main({ n }) {
+  tmpdir.refresh();
+
+  fs.mkdirSync(benchmarkDirectory);
+
+  let sampleSource = 'try {\n';
+  for (let i = 0; i < 1000; i++) {
+    sampleSource += 'sample.js(() => file = /test/);\n';
+  }
+  sampleSource += '} catch {}\nexports.p = 5;\n';
+
+  for (let i = 0; i < n; i++) {
+    const sampleFile = path.join(benchmarkDirectory, `sample${i}.js`);
+    fs.writeFileSync(sampleFile, sampleSource);
+  }
+
+  bench.start();
+  for (let i = 0; i < n; i++) {
+    const sampleFile = path.join(benchmarkDirectory, `sample${i}.js`);
+    const m = await import('file:' + sampleFile);
+    strictEqual(m.p, 5);
+  }
+  bench.end(n);
+
+  tmpdir.refresh();
+}

benchmark/esm/detect-esm-syntax.js

@@ -0,0 +1,36 @@
+'use strict';
+
+// This benchmarks the cost of running `containsModuleSyntax` on a CommonJS module being imported.
+// 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 fs = require('node:fs');
+
+const bench = common.createBenchmark(main, {
+  type: ['with-package-json', 'without-package-json'],
+  n: [1e4],
+});
+
+async function main({ n, type }) {
+  tmpdir.refresh();
+  fs.mkdirSync(tmpdir.resolve('bench'));
+
+  let loader = '';
+  const modules = [];
+  for (let i = 0; i < n; i++) {
+    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);
+}

benchmark/esm/esm-legacyMainResolve.js

@@ -0,0 +1,52 @@
+// Tests the impact on eager operations required for policies affecting
+// general startup, does not test lazy operations
+'use strict';
+const fs = require('node:fs');
+const path = require('node:path');
+const common = require('../common.js');
+
+const tmpdir = require('../../test/common/tmpdir.js');
+const { pathToFileURL } = require('node:url');
+
+const benchmarkDirectory = tmpdir.resolve('benchmark-import-meta-resolve');
+
+const configs = {
+  n: [1e4],
+  packageJsonUrl: [
+    'node_modules/test/package.json',
+  ],
+  packageConfigMain: ['', './index.js'],
+  resolvedFile: [
+    'node_modules/test/index.js',
+    'node_modules/test/index.json',
+    'node_modules/test/index.node',
+    'node_modules/non-exist',
+  ],
+};
+
+const options = {
+  flags: ['--expose-internals'],
+};
+
+const bench = common.createBenchmark(main, configs, options);
+
+function main(conf) {
+  const { legacyMainResolve } = require('internal/modules/esm/resolve');
+  tmpdir.refresh();
+
+  fs.mkdirSync(path.join(benchmarkDirectory, 'node_modules', 'test'), { recursive: true });
+  fs.writeFileSync(path.join(benchmarkDirectory, conf.resolvedFile), '\n');
+
+  const packageJsonUrl = pathToFileURL(conf.packageJsonUrl);
+  const packageConfigMain = { main: conf.packageConfigMain };
+
+  bench.start();
+
+  for (let i = 0; i < conf.n; i++) {
+    try {
+      legacyMainResolve(packageJsonUrl, packageConfigMain, undefined);
+    } catch { /* empty */ }
+  }
+
+  bench.end(conf.n);
+}

benchmark/esm/esm-loader-defaultResolve.js

@@ -0,0 +1,50 @@
+// Tests the impact on eager operations required for policies affecting
+// general startup, does not test lazy operations
+'use strict';
+const fs = require('node:fs');
+const path = require('node:path');
+const common = require('../common.js');
+
+const tmpdir = require('../../test/common/tmpdir.js');
+const { pathToFileURL } = require('node:url');
+
+const benchmarkDirectory = tmpdir.resolve('benchmark-import-meta-resolve');
+
+const parentURL = pathToFileURL(path.join(benchmarkDirectory, 'entry-point.js'));
+
+const configs = {
+  n: [1e3],
+  specifier: [
+    './relative-existing.js',
+    './relative-nonexistent.js',
+    'unprefixed-existing',
+    'unprefixed-nonexistent',
+    'node:prefixed-nonexistent',
+    'node:os',
+  ],
+};
+
+const options = {
+  flags: ['--expose-internals'],
+};
+
+const bench = common.createBenchmark(main, configs, options);
+
+function main(conf) {
+  const { defaultResolve } = require('internal/modules/esm/resolve');
+  tmpdir.refresh();
+
+  fs.mkdirSync(path.join(benchmarkDirectory, 'node_modules', 'unprefixed-existing'), { recursive: true });
+  fs.writeFileSync(path.join(benchmarkDirectory, 'node_modules', 'unprefixed-existing', 'index.js'), '\n');
+  fs.writeFileSync(path.join(benchmarkDirectory, 'relative-existing.js'), '\n');
+
+  bench.start();
+
+  for (let i = 0; i < conf.n; i++) {
+    try {
+      defaultResolve(conf.specifier, { parentURL });
+    } catch { /* empty */ }
+  }
+
+  bench.end(conf.n);
+}

benchmark/esm/esm-loader-import.js

@@ -0,0 +1,43 @@
+// Tests the impact on eager operations required for policies affecting
+// general startup, does not test lazy operations
+'use strict';
+const fs = require('node:fs');
+const common = require('../common.js');
+
+const tmpdir = require('../../test/common/tmpdir.js');
+
+const benchmarkDirectory = tmpdir.fileURL('benchmark-import');
+
+const configs = {
+  n: [1e3],
+  specifier: [
+    'data:text/javascript,{i}',
+    './relative-existing.js',
+    './relative-nonexistent.js',
+    'node:prefixed-nonexistent',
+    'node:os',
+  ],
+};
+
+const options = {
+  flags: ['--expose-internals'],
+};
+
+const bench = common.createBenchmark(main, configs, options);
+
+async function main(conf) {
+  tmpdir.refresh();
+
+  fs.mkdirSync(benchmarkDirectory, { recursive: true });
+  fs.writeFileSync(new URL('./relative-existing.js', benchmarkDirectory), '\n');
+
+  bench.start();
+
+  for (let i = 0; i < conf.n; i++) {
+    try {
+      await import(new URL(conf.specifier.replace('{i}', i), benchmarkDirectory));
+    } catch { /* empty */ }
+  }
+
+  bench.end(conf.n);
+}

benchmark/esm/import-meta.js

@@ -0,0 +1,37 @@
+'use strict';
+
+const path = require('path');
+const { pathToFileURL } = require('url');
+const common = require('../common');
+const assert = require('assert');
+const bench = common.createBenchmark(main, {
+  n: [1000],
+  valuesToRead: [
+    'dirname-and-filename',
+    'dirname',
+    'filename',
+  ],
+});
+
+const fixtureDir = path.resolve(__filename, '../../fixtures');
+const fixtureDirURL = pathToFileURL(fixtureDir);
+async function load(array, n, valuesToRead) {
+  for (let i = 0; i < n; i++) {
+    array[i] = await import(`${fixtureDirURL}/import-meta-${valuesToRead}.mjs?i=${i}`);
+  }
+  return array;
+}
+
+function main({ n, valuesToRead }) {
+  const array = [];
+  for (let i = 0; i < n; ++i) {
+    array.push({ dirname: '', filename: '', i: 0 });
+  }
+
+  bench.start();
+  load(array, n, valuesToRead).then((arr) => {
+    bench.end(n);
+    if (valuesToRead.includes('dirname')) assert.strictEqual(arr[n - 1].dirname, fixtureDir);
+    if (valuesToRead.includes('filename')) assert.strictEqual(arr[n - 1].filename, path.join(fixtureDir, `import-meta-${valuesToRead}.mjs`));
+  });
+}

benchmark/esm/require-esm.js

@@ -0,0 +1,79 @@
+'use strict';
+
+const common = require('../common');
+const fs = require('fs');
+const tmpdir = require('../../test/common/tmpdir');
+const path = require('path');
+const assert = require('assert');
+
+const bench = common.createBenchmark(main, {
+  type: ['all', 'access', 'load'],
+  exports: ['default', 'named'],
+  n: [1000],
+}, {
+  flags: ['--experimental-require-module', '--no-warnings'],
+});
+
+function prepare(count, useDefault) {
+  tmpdir.refresh();
+  const dir = tmpdir.resolve('modules');
+  fs.mkdirSync(dir, { recursive: true });
+  let mainSource = '';
+  let useSource = 'exports.access = function() { return 0';
+  for (let i = 0; i < count; ++i) {
+    let modSource = `const value${i} = 1;\n`;
+    if (useDefault) {
+      modSource += `export default { value${i} }\n`;
+    } else {
+      modSource += `export { value${i} };\n`;
+    }
+    const filename = `mod${i}.mjs`;
+    fs.writeFileSync(
+      path.resolve(dir, filename),
+      modSource,
+      'utf8',
+    );
+    mainSource += `const mod${i} = require('./modules/${filename}');\n`;
+    if (useDefault) {
+      useSource += ` + mod${i}.default.value${i}`;
+    } else {
+      useSource += ` + mod${i}.value${i}`;
+    }
+  }
+  useSource += '; };\n';
+  const script = tmpdir.resolve('main.js');
+  fs.writeFileSync(script, mainSource + useSource, 'utf8');
+  return script;
+}
+
+function main({ n, exports, type }) {
+  const script = prepare(n, exports === 'default');
+  switch (type) {
+    case 'all': {
+      bench.start();
+      const result = require(script).access();
+      bench.end(n);
+      assert.strictEqual(result, n);
+      break;
+    }
+    case 'access': {
+      const { access } = require(script);
+      bench.start();
+      let result = access();
+      for (let i = 0; i < 99; ++i) {
+        result = access();
+      }
+      bench.end(n * 100);
+      assert.strictEqual(result, n);
+      break;
+    }
+    case 'load': {
+      bench.start();
+      const { access } = require(script);
+      bench.end(n);
+      const result = access();
+      assert.strictEqual(result, n);
+      break;
+    }
+  }
+}