Core_objectMaster.js

const pokemon = Object.freeze([
    { "id": 1,   "name": "Bulbasaur",  "types": ["poison", "grass"] },
    { "id": 5,   "name": "Charmeleon", "types": ["fire"] },
    { "id": 9,   "name": "Blastoise",  "types": ["water"] },
    { "id": 12,  "name": "Butterfree", "types": ["bug", "flying"] },
    { "id": 16,  "name": "Pidgey",     "types": ["normal", "flying"] },
    { "id": 23,  "name": "Ekans",      "types": ["poison"] },
    { "id": 24,  "name": "Arbok",      "types": ["poison"] },
    { "id": 25,  "name": "Pikachu",    "types": ["electric"] },
    { "id": 35,  "name": "Clefairy",   "types": ["normal"] },
    { "id": 37,  "name": "Vulpix",     "types": ["fire"] },
    { "id": 52,  "name": "Meowth",     "types": ["normal"] },
    { "id": 63,  "name": "Abra",       "types": ["psychic"] },
    { "id": 67,  "name": "Machamp",    "types": ["fighting"] },
    { "id": 72,  "name": "Tentacool",  "types": ["water", "poison"] },
    { "id": 74,  "name": "Geodude",    "types": ["rock", "ground"] },
    { "id": 87,  "name": "Dewgong",    "types": ["water", "ice"] },
    { "id": 98,  "name": "Krabby",     "types": ["water"] },
    { "id": 115, "name": "Kangaskhan", "types": ["normal"] },
    { "id": 122, "name": "Mr. Mime",   "types": ["psychic"] },
    { "id": 133, "name": "Eevee",      "types": ["normal"] },
    { "id": 144, "name": "Articuno",   "types": ["ice", "flying"] },
    { "id": 145, "name": "Zapdos",     "types": ["electric", "flying"] },
    { "id": 146, "name": "Moltres",    "types": ["fire", "flying"] },
    { "id": 148, "name": "Dragonair",  "types": ["dragon"] }
]);

// an array of pokémon objects where the id is evenly divisible by 3
const pokemonDivisibleByThree = pokemon.filter( p => p.id% 3 === 0)
console.log(pokemonDivisibleByThree);

// an array of pokémon objects that are "fire" type
const pokemonTypeOfFire = pokemon.filter( p => p.types.includes("fire"))
console.log(pokemonTypeOfFire);

// an array of pokémon objects that have more than one type
const pokemonTypesMoreThanOne = pokemon.filter( p => p.types.length >1)
console.log(pokemonTypesMoreThanOne);

// an array with just the names of the pokémon
const pokemonNames = pokemon.map ( p => p.name)
console.log(pokemonNames);

// an array with just the names of pokémon with an id greater than 99
const pokemonNamesWithIdMoreThan99 = pokemon.filter ( p => p.id > 99).map(p => p.name)
console.log(pokemonNamesWithIdMoreThan99);

// an array with just the names of the pokémon whose only type is poison
const pokemonNamesWithTypeOfPoison = pokemon.filter(p => p.types == "poison").map(p => p.name)
console.log(pokemonNamesWithTypeOfPoison);

// an array containing just the first type of all the pokémon whose second type is "flying"
const pokemonSecondOfTypeOfFlying = pokemon.filter(p => p.types[1] == "flying").map(p => p.types[0])
console.log(pokemonSecondOfTypeOfFlying);

// a count of the number of pokémon that are "normal" type
const pokemonCountofTypesOfNormal = pokemon.filter(p => p.types.includes("normal")).length
console.log(pokemonCountofTypesOfNormal);

// an array with all pokemon except the pokemon with the id of 148
const pokemonWithoutIdOf148 = pokemon.filter(p => p.id != 148)
console.log(pokemonWithoutIdOf148);

// an array with all pokemon and for pokemon id: 35 replacing "normal" with "fairy"
const pokemonByIdOf35 = pokemon.map(p => {
    if (p.id === 35){
        return {...p, types: p.types.map(type => type === "normal" ? "fairy": type)}
    }
    return p
})
console.log(pokemonByIdOf35);