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benchmark/vm/source-text-module-leaf.js
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Joyee Cheung
benchmark: add benchmark for leaf source text modules
18 окт 2025, 11:20
18 окт 2025, 11:20
8b52c89
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'use strict'; const vm = require('vm'); const common = require('../common.js'); const assert = require('assert'); const bench = common.createBenchmark(main, { stage: ['all', 'compile', 'link', 'instantiate', 'evaluate'], type: ['sync', 'async'], n: [1000], }, { flags: ['--experimental-vm-modules'], }); function main({ stage, type, n }) { const arr = []; if (stage === 'all' || stage === 'compile') { bench.start(); } for (let i = 0; i < n; i++) { let source = `export const value${i} = 1;`; if (type === 'async') { source += `\nawait Promise.resolve();\n`; } const m = new vm.SourceTextModule(source); arr.push(m); } if (stage === 'compile') { bench.end(n); return; } if (stage === 'link') { bench.start(); } for (let i = 0; i < n; i++) { arr[i].linkRequests([]); } if (stage === 'link') { bench.end(n); return; } if (stage === 'instantiate') { bench.start(); } for (let i = 0; i < n; i++) { arr[i].instantiate(); } if (stage === 'instantiate') { bench.end(n); return; } if (stage === 'evaluate') { bench.start(); } function finalize() { bench.end(n); for (let i = 0; i < n; i++) { assert.strictEqual(arr[i].namespace[`value${i}`], 1); } } if (type === 'sync') { for (let i = 0; i < n; i++) { arr[i].evaluate(); } finalize(); } else { const promises = []; for (let i = 0; i < n; i++) { promises.push(arr[i].evaluate()); } Promise.all(promises).then(finalize); } }