node/benchmark/vm/compile-script-in-isolate-c...

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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();
}