run-benchmark.js

const chalk = require('chalk');
const log = console.log;

function runBenchmark(description, operations, callback) {
  const start = process.hrtime.bigint();
  for (let i = 0; i < operations; i++) {
    callback();
  }
  const end = process.hrtime.bigint();

  const nanoSeconds = end - start;
  const seconds = parseFloat(nano) / 1000000000;

  log(chalk.green(description));
  log(`Benchmark with ${operations} operations, took ${nanoSeconds} nanoseconds - ${seconds} seconds`);
  log();
}

module.exports = {
  runBenchmark
};

usage.md

benchmark.js

const { runBenchmark } = require('./run-benchmark');

function test() {
  console.log('hello world');
}

runBenchmark('with 1.000.000 operations', 1000000, function() {
  test();
});

package.json

{
  "scripts": {
    "benchmark": "node ./benchmark.js"
  }
}