testing, Node.js - rextester

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'use strict'

/*const EventEmitter = require('events').EventEmitter;

class Dog extends EventEmitter {};
class Food {};

let myDog = new Dog();

myDog.on('chew', (item) => {
    if(item instanceof Food) {
        console.log('Good dog');
    } else {
         console.log(`Time to buy another ${item}`);
          }
});

myDog.emit('chew', 'shoe');
const bacon = new Food();
myDog.emit('chew', bacon); */

/*
const EventEmitter = require('events')
const emitter = new EventEmitter();

emitter.on('EventOne', () => console.log('Message from EventOne'));
emitter.emit('EventOne');

emitter
.on("data", (data)=>{ 
console.log(data);
});

//console.log(emitter.eventNames());
console.log('\nListener count for EventOne :: ' + emitter.listenerCount('EventOne'));
console.log('\nListener count for data :: ' + emitter.listenerCount('data'));
    
//emitter.removeListener('data', 'Message from data');

console.log('\nListener count after removing some listener\n');
    
console.log('\nListener count for EventOne :: ' + emitter.listenerCount('EventOne'));
console.log('\nListener count for data :: ' + emitter.listenerCount('data'));

//emitter.removeAllListeners('data');
emitter.removeAllListeners();

console.log('\nListener count after removing all listener\n');    
    
console.log('\nListener count for EventOne :: ' + emitter.listenerCount('EventOne'));
console.log('\nListener count for data :: ' + emitter.listenerCount('data'));    
*/    
    
process.stdin.resume()
console.log('Enter the data to be displayed ');
process.stdin.on('data', function(data) { process.stdout.write(data) })

[ + ] Show input
Absolute running time: 10.1 sec, cpu time: 0 sec, memory peak: 0 Mb, absolute service time: 10,11 sec