munkacsitomi

const port = 3000;
const express = require('express');
const app = express();

const getJSONString = (obj) => JSON.stringify(obj, null, 2);

app
  .get('/', (req, res) => {
    console.log(`Method: ${getJSONString(req.method)}`);
    console.log(`URL: ${getJSONString(req.url)}`);

munkacsitomi

const http = require('http');
const httpStatus = require('http-status-codes');
const port = 3000;
const app = http.createServer();

const getJSONString = (obj) => JSON.stringify(obj, null, 2);

app.on('request', (req, res) => {
  var body = [];

munkacsitomi

exports.messages = ['Hello', 'This is a message', 'And another message'];

munkacsitomi

const add = (a) => (b) => a + b;
const addMore = (a) => (b) => (c) => add(a)(b) + c;

console.log(add(2)(4));
console.log(addMore(2)(4)(6));
// 6
// 12

munkacsitomi

class Player {
  play(song) {
    this.currentlyPlayingSong = song;
    this.isPlaying = true;
  }

  pause() {
    this.isPlaying = false;
  }

munkacsitomi

const ninjas = new Set(['Kuma', 'Hattori', 'Yagyu']);
const samurai = new Set(['Hattori', 'Oda', 'Tomoe']);

const pureNinjas = new Set([...ninjas].filter(ninja => !samurai.has(ninja)));
const everyone = new Set([...ninjas, ...samurai]);

console.log(pureNinjas.size === 2, 'There’s only one ninja samurai');
console.log(pureNinjas.has('Kuma'), 'Kuma is a true ninja');
console.log(pureNinjas.has('Yagyu'), 'Yagyu is a true ninja');
console.log(everyone.size === 5, 'Do not count twice Hattori, the ninja samurai');

munkacsitomi

class NinjaCollection {
  constructor() {
    this.ninjas = ['Yoshi', 'Kuma', 'Hattori'];
  }
  get firstNinja() {
    console.log('Getting firstNinja');
    return this.ninjas[0];
  }
  set firstNinja(value) {
    console.log('Setting firstNinja');

munkacsitomi

class Person {
  constructor(name) {
    this.name = name;
  }

  dance() {
    return true;
  }
}

munkacsitomi

function* IdGenerator() {
  let id = 0;
  while (true) {
    yield ++id;
  }
}

const idIterator = IdGenerator();

const ninja1 = { id: idIterator.next().value };

munkacsitomi

const multiMax = (first, ...remainingNumbers) => {
  const max = remainingNumbers.sort((a, b) => b - a).find(a => a);
  return first * max;
}

console.log(multiMax(3, 1, 2, 5, 4)); // 3 * 5 = 15