timeSpan

timeSpan.ts

import convertHrtime from 'convert-hrtime';

export const timeSpan = () => {
  const start = process.hrtime();
  const end = (type) => convertHrtime(process.hrtime(start))[type];

  const returnValue = () => end('milliseconds');
  returnValue.rounded = () => Math.round(end('milliseconds'));
  returnValue.seconds = () => end('seconds');
  returnValue.nanoseconds = () => end('nanoseconds');

  return returnValue;
};

timeSpanUsage.ts

const end = timeSpan();

await fn();

console.log(end());