dead-simple benchmarking tool

benchmark.node.js

'use strict';

/**
 * Benchmark the sh#t out of stuff
 * Use this in NodeJS environments.
 * Shamelessly borrowed from: https://www.stefanjudis.com/today-i-learned/measuring-execution-time-more-precisely-in-the-browser-and-node-js/
 *
 * USAGE:
 * `const benchmark = Benchmark(); // starts the 'clock'`
 * `benchmark(); // logs current elapsed ns since start or last benchmark`
 */
module.exports = function Benchmark() {
  const NS_PER_SEC = 1e9;
  let time = process.hrtime();
  return () => {
    const diff = process.hrtime(time);
    console.log(`${(diff[0] * NS_PER_SEC + diff[1]) / NS_PER_SEC}s`);
    time = process.hrtime();
  };
}

benchmark.web.js

'use strict';

/**
 * Benchmark the sh#t out of stuff
 * Use this in web browsers.
 *
 * USAGE:
 * `const benchmark = new Benchmark(); // starts the 'clock'`
 * `benchmark(); // logs current elapsed ms since start`
 */
module.exports = function Benchmark() {
  let time = new Date().getTime();
  return () => {
    console.log(new Date().getTime() - time);
    time = new Date().getTime();
  };
}