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'use strict';
const common = require('../common');
const fs = require('fs');
const path = require('path');
const bench = common.createBenchmark(main, {
n: [100],
dir: [ 'lib', 'test/parallel'],
mode: [ 'async', 'sync', 'callback' ],
bufferSize: [ 4, 32, 1024 ]
});
async function main({ n, dir, mode, bufferSize }) {
const fullPath = path.resolve(__dirname, '../../', dir);
bench.start();
let counter = 0;
for (let i = 0; i < n; i++) {
if (mode === 'async') {
const dir = await fs.promises.opendir(fullPath, { bufferSize });
// eslint-disable-next-line no-unused-vars
for await (const entry of dir)
counter++;
} else if (mode === 'callback') {
const dir = await fs.promises.opendir(fullPath, { bufferSize });
await new Promise((resolve, reject) => {
function read() {
dir.read((err, entry) => {
if (err) {
reject(err);
} else if (entry === null) {
resolve(dir.close());
} else {
counter++;
read();
}
});
}
read();
});
} else {
const dir = fs.opendirSync(fullPath, { bufferSize });
while (dir.readSync() !== null)
counter++;
dir.closeSync();
}
}
bench.end(counter);
}
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