Javascript simples immutable data structure exercises

exercises.js

// ===================
// Array Exercises
// ===================

// Reference: https://pokeapi.co/api/v2/pokemon?limit=10
const arr = [
  {
    name: 'bulbasaur',
    url: 'https://pokeapi.co/api/v2/pokemon/1/',
    base_experience: 64,
  },
  {
    name: 'ivysaur',
    url: 'https://pokeapi.co/api/v2/pokemon/2/',
    base_experience: 142,
  },
  {
    name: 'venusaur',
    url: 'https://pokeapi.co/api/v2/pokemon/3/',
    base_experience: 236,
  },
];

// You can only use "immutable" array methods.
// "Immutable" methods keeps the original array form as it is, creating an easier
// to manage javascript environment.

// You can use: array.map(), array.find(), array.filter(), array.some(), array.reduce()
// You CANNOT use: array.forEach(), array.push(), array.pop(), array.splice()

// 1. Return only the name of the pokemons
// answer: ['bulbasaur', 'ivysaur', 'venusaur']

// 2. Find "venusaur" object in array (and return it)
// answer: { "name": "venusaur", "url": "https://pokeapi.co/api/v2/pokemon/3/", "base_experience": 236 }

// 3. Return only pokemons that has "base_experience" higher than 100
// answer: [
//     {
//         "name": "ivysaur",
//         "url": "https://pokeapi.co/api/v2/pokemon/2/",
//         "base_experience": 142
//     },
//     {
//         "name": "venusaur",
//         "url": "https://pokeapi.co/api/v2/pokemon/3/",
//         "base_experience": 236
//     }
// ]

// 4. Return "true" if "ivysaur" is in array
// answer: true

// 5. Return the sum of "base_experience" from all pokemons
// answer: 442


// ===================
// Object Exercises
// ===================

// Reference: https://pokeapi.co/api/v2/pokemon/1
const object = {
  id: 1,
  name: 'bulbasaur',
  base_experience: 64,
  height: 7,
  weight: 69.5123123,
  abilities: [
    {
      name: 'overgrow',
      url: 'https://pokeapi.co/api/v2/ability/65/'
    },
    {
      name: 'chlorophyll',
      url: 'https://pokeapi.co/api/v2/ability/34/'
    },
  ],
};

// You can only use "immutable" object methods.

// You can use: Object.assign(), Spread Operador, Object Destructuring
// You CANNOT use: Object.seal(), "delete"

// 1. Return only "base_experience" of the object
// answer: 64

// 2. Overwrite "abilities" attribute with an array of strings with the "name" of the each ability and return the whole new object
// answer: { ..., abilities: ['overgrow', 'chlorophyll'] }

// 3. Create a string describing the object
// answer: 'The pokémon "bulbasaur" weighs 69,51 kilograms and he is 7 meters tall. His abilites are: overgrow, chlorophyll'