Javascript Closures

closures.js

const logger = (function(message) {
  const log = [];
  const show = 123;
  
  const logging = (message) => {
    const error = {
      date: new Date(),
      message
    };
    
    return log.push(error);
  };
  
  logging.show = () => log;
  
  return logging;
}());

console.log(logger('Catastrophic error!'));
console.log(logger('Nope, nope, nope!'));
console.log(logger.show());