[JavaScript] Maps : Fundamentals

const weekdays = ['mon', 'tue', 'wed', 'thu', 'fri', 'sat', 'sun'];
const openingHours = {
  [weekdays[3]]: {
    open: 12,
    close: 22,
  },
  [weekdays[4]]: {
    open: 11,
    close: 23,
  },
  [weekdays[5]]: {
    open: 0, // Open 24 hours
    close: 24,
  },
};

const restaurant = {
  name: 'Classico Italiano',
  location: 'Via Angelo Tavanti 23, Firenze, Italy',
  categories: ['Italian', 'Pizzeria', 'Vegetarian', 'Organic'],
  starterMenu: ['Focaccia', 'Bruschetta', 'Garlic Bread', 'Caprese Salad'],
  mainMenu: ['Pizza', 'Pasta', 'Risotto'],

  // ES6 enhanced object literals
  openingHours,

  order(starterIndex, mainIndex) {
    return [this.starterMenu[starterIndex], this.mainMenu[mainIndex]];
  },

  orderDelivery({ starterIndex = 1, mainIndex = 0, time = '20:00', address }) {
    console.log(
      `Order received! ${this.starterMenu[starterIndex]} and ${this.mainMenu[mainIndex]} will be delivered to ${address} at ${time}.`
    );
  },

  orderPasta(ing1, ing2, ing3) {
    console.log(`Here is your delicious pasta with ${ing1}, ${ing2}, ${ing3}.`);
  },

  orderPizza(mainIngredient, ...otherIngredients) {
    console.log(mainIngredient);
    console.log(otherIngredients);
  },
};

///////////////////////////////
// Maps: Fundamental

const rest = new Map();
rest.set('name', 'Classico Italiano');
rest.set(1, 'Firenze, Italy');
rest.set(2, 'Lisbon, Portugal');

rest
  .set('Categories', ['Italian', 'Pizzeria', 'Vegetarian', 'Organic'])
  .set('open', 11)
  .set('close', 23)
  .set(true, 'We are open :D')
  .set(false, 'We are closed :(');

console.log(rest);

console.log(rest.get('name'));
console.log(rest.get(true));
console.log(rest.get(1));

const time = 21;
console.log(rest.get(time > rest.get('open') && time < rest.get('close')));

console.log(rest.has('Categories'));
rest.delete(2);
console.log(rest);
console.log(rest.size);
// rest.clear();
// console.log(rest);

rest.set([1, 2], 'Test');
console.log(rest.get([1, 2])); // it is different between two [1, 2]

const arr = [1, 2];
rest.set(arr, 'Test');
rest.set(document.querySelector('h1'), 'Heading');
console.log(rest.get(arr)); // it is working for get [1, 2] above example
console.log(rest);