node/benchmark/vm/compile-script-in-isolate-cache.js at main · fetchapi/node · GitHub

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'use strict';

// This benchmarks compiling scripts that hit the in-isolate compilation

// cache (by having the same source).

const common = require('../common.js');

const fs = require('fs');

const vm = require('vm');

const fixtures = require('../../test/common/fixtures.js');

const scriptPath = fixtures.path('snapshot', 'typescript.js');

const bench = common.createBenchmark(main, {

type: ['with-dynamic-import-callback', 'without-dynamic-import-callback'],

n: [100],

});

const scriptSource = fs.readFileSync(scriptPath, 'utf8');

function main({ n, type }) {

let script;

bench.start();

const options = {};

switch (type) {

case 'with-dynamic-import-callback':

// Use a dummy callback for now until we really need to benchmark it.

options.importModuleDynamically = async () => {};

break;

case 'without-dynamic-import-callback':

break;

}

for (let i = 0; i < n; i++) {

script = new vm.Script(scriptSource, options);

}

bench.end(n);

script.runInThisContext();

}

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