es6 vs commonjs

'use strict'

export function showMe() {
  alert("es6");
};

class logging {
  constructor() {
    alert("es6 class");
  }
  ha() {
   console.log("fff");
  }
}

export const log = new logging();

#......
import { showMe, log }  from './es6.js';
showMe();
log.ha();

'use strict'

function showMeC() {
  alert("commonjs");
}

module.exports = {
  showMeC: showMeC,
};

# ......
const { showMeC } = require('./commonjs.js'); 

showMeC();

commonjs